From 439d473b4777de510e1322168ac6f2f377ecd5bc Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 2 Oct 2009 03:29:58 -0300
Subject: perf tools: Rewrite and improve support for kernel modules
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Representing modules as struct map entries, backed by a DSO, etc,
using /proc/modules to find where the module is loaded.
DSOs now can have a short and long name, so that in verbose mode we
can show exactly which .ko or vmlinux image was used.
As kernel modules now are a DSO separate from the kernel, we can
ask for just the hits for a particular set of kernel modules, just
like we can do with shared libraries:
[root@doppio linux-2.6-tip]# perf report -n --vmlinux
/home/acme/git/build/tip-recvmmsg/vmlinux --modules --dsos \[drm\] | head -15
84.58% 13266 Xorg [k] drm_clflush_pages
4.02% 630 Xorg [k] trace_kmalloc.clone.0
3.95% 619 Xorg [k] drm_ioctl
2.07% 324 Xorg [k] drm_addbufs
1.68% 263 Xorg [k] drm_gem_close_ioctl
0.77% 120 Xorg [k] drm_setmaster_ioctl
0.70% 110 Xorg [k] drm_lastclose
0.68% 106 Xorg [k] drm_open
0.54% 85 Xorg [k] drm_mm_search_free
[root@doppio linux-2.6-tip]#
Specifying --dsos /lib/modules/2.6.31-tip/kernel/drivers/gpu/drm/drm.ko
would have the same effect. Allowing specifying just 'drm.ko' is left
for another patch.
Processing kallsyms so that per kernel module struct map are
instantiated was also left for another patch. That will allow
removing the module name from each of its symbols.
struct symbol was reduced by removing the ->module backpointer and
moving it (well now the map) to struct symbol_entry in perf top,
that is its only user right now.
The total linecount went down by ~500 lines.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Avi Kivity <avi@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 447 +++++++++++++++++++++++++++++++----------------
1 file changed, 301 insertions(+), 146 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 559fb06210f..e8829689947 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2,12 +2,14 @@
#include "../perf.h"
#include "string.h"
#include "symbol.h"
+#include "thread.h"
#include "debug.h"
#include <libelf.h>
#include <gelf.h>
#include <elf.h>
+#include <sys/utsname.h>
const char *sym_hist_filter;
@@ -18,12 +20,15 @@ enum dso_origin {
DSO__ORIG_UBUNTU,
DSO__ORIG_BUILDID,
DSO__ORIG_DSO,
+ DSO__ORIG_KMODULE,
DSO__ORIG_NOT_FOUND,
};
-static struct symbol *symbol__new(u64 start, u64 len,
- const char *name, unsigned int priv_size,
- u64 obj_start, int v)
+static void dsos__add(struct dso *dso);
+static struct dso *dsos__find(const char *name);
+
+static struct symbol *symbol__new(u64 start, u64 len, const char *name,
+ unsigned int priv_size, int v)
{
size_t namelen = strlen(name) + 1;
struct symbol *self = calloc(1, priv_size + sizeof(*self) + namelen);
@@ -32,10 +37,9 @@ static struct symbol *symbol__new(u64 start, u64 len,
return NULL;
if (v >= 2)
- printf("new symbol: %016Lx [%08lx]: %s, hist: %p, obj_start: %p\n",
- (u64)start, (unsigned long)len, name, self->hist, (void *)(unsigned long)obj_start);
+ printf("new symbol: %016Lx [%08lx]: %s, hist: %p\n",
+ start, (unsigned long)len, name, self->hist);
- self->obj_start= obj_start;
self->hist = NULL;
self->hist_sum = 0;
@@ -60,12 +64,8 @@ static void symbol__delete(struct symbol *self, unsigned int priv_size)
static size_t symbol__fprintf(struct symbol *self, FILE *fp)
{
- if (!self->module)
- return fprintf(fp, " %llx-%llx %s\n",
+ return fprintf(fp, " %llx-%llx %s\n",
self->start, self->end, self->name);
- else
- return fprintf(fp, " %llx-%llx %s \t[%s]\n",
- self->start, self->end, self->name, self->module->name);
}
struct dso *dso__new(const char *name, unsigned int sym_priv_size)
@@ -74,6 +74,8 @@ struct dso *dso__new(const char *name, unsigned int sym_priv_size)
if (self != NULL) {
strcpy(self->name, name);
+ self->long_name = self->name;
+ self->short_name = self->name;
self->syms = RB_ROOT;
self->sym_priv_size = sym_priv_size;
self->find_symbol = dso__find_symbol;
@@ -100,6 +102,8 @@ static void dso__delete_symbols(struct dso *self)
void dso__delete(struct dso *self)
{
dso__delete_symbols(self);
+ if (self->long_name != self->name)
+ free(self->long_name);
free(self);
}
@@ -147,7 +151,7 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip)
size_t dso__fprintf(struct dso *self, FILE *fp)
{
- size_t ret = fprintf(fp, "dso: %s\n", self->name);
+ size_t ret = fprintf(fp, "dso: %s\n", self->long_name);
struct rb_node *nd;
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
@@ -158,7 +162,8 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
return ret;
}
-static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int v)
+static int dso__load_kallsyms(struct dso *self, struct map *map,
+ symbol_filter_t filter, int v)
{
struct rb_node *nd, *prevnd;
char *line = NULL;
@@ -200,12 +205,12 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int v)
* Well fix up the end later, when we have all sorted.
*/
sym = symbol__new(start, 0xdead, line + len + 2,
- self->sym_priv_size, 0, v);
+ self->sym_priv_size, v);
if (sym == NULL)
goto out_delete_line;
- if (filter && filter(self, sym))
+ if (filter && filter(map, sym))
symbol__delete(sym, self->sym_priv_size);
else {
dso__insert_symbol(self, sym);
@@ -241,14 +246,15 @@ out_failure:
return -1;
}
-static int dso__load_perf_map(struct dso *self, symbol_filter_t filter, int v)
+static int dso__load_perf_map(struct dso *self, struct map *map,
+ symbol_filter_t filter, int v)
{
char *line = NULL;
size_t n;
FILE *file;
int nr_syms = 0;
- file = fopen(self->name, "r");
+ file = fopen(self->long_name, "r");
if (file == NULL)
goto out_failure;
@@ -279,12 +285,12 @@ static int dso__load_perf_map(struct dso *self, symbol_filter_t filter, int v)
continue;
sym = symbol__new(start, size, line + len,
- self->sym_priv_size, start, v);
+ self->sym_priv_size, v);
if (sym == NULL)
goto out_delete_line;
- if (filter && filter(self, sym))
+ if (filter && filter(map, sym))
symbol__delete(sym, self->sym_priv_size);
else {
dso__insert_symbol(self, sym);
@@ -410,7 +416,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, int v)
Elf *elf;
int nr = 0, symidx, fd, err = 0;
- fd = open(self->name, O_RDONLY);
+ fd = open(self->long_name, O_RDONLY);
if (fd < 0)
goto out;
@@ -478,7 +484,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, int v)
"%s@plt", elf_sym__name(&sym, symstrs));
f = symbol__new(plt_offset, shdr_plt.sh_entsize,
- sympltname, self->sym_priv_size, 0, v);
+ sympltname, self->sym_priv_size, v);
if (!f)
goto out_elf_end;
@@ -496,7 +502,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, int v)
"%s@plt", elf_sym__name(&sym, symstrs));
f = symbol__new(plt_offset, shdr_plt.sh_entsize,
- sympltname, self->sym_priv_size, 0, v);
+ sympltname, self->sym_priv_size, v);
if (!f)
goto out_elf_end;
@@ -515,12 +521,13 @@ out_close:
return nr;
out:
fprintf(stderr, "%s: problems reading %s PLT info.\n",
- __func__, self->name);
+ __func__, self->long_name);
return 0;
}
-static int dso__load_sym(struct dso *self, int fd, const char *name,
- symbol_filter_t filter, int v, struct module *mod)
+static int dso__load_sym(struct dso *self, struct map *map, const char *name,
+ int fd, symbol_filter_t filter, int kernel,
+ int kmodule, int v)
{
Elf_Data *symstrs, *secstrs;
uint32_t nr_syms;
@@ -532,7 +539,7 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
GElf_Sym sym;
Elf_Scn *sec, *sec_strndx;
Elf *elf;
- int nr = 0, kernel = !strcmp("[kernel]", self->name);
+ int nr = 0;
elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
@@ -589,8 +596,6 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
struct symbol *f;
const char *elf_name;
char *demangled;
- u64 obj_start;
- struct section *section = NULL;
int is_label = elf_sym__is_label(&sym);
const char *section_name;
@@ -607,7 +612,6 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
continue;
section_name = elf_sec__name(&shdr, secstrs);
- obj_start = sym.st_value;
if (self->adjust_symbols) {
if (v >= 2)
@@ -615,18 +619,8 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
(u64)sym.st_value, (u64)shdr.sh_addr, (u64)shdr.sh_offset);
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
- }
-
- if (mod) {
- section = mod->sections->find_section(mod->sections, section_name);
- if (section)
- sym.st_value += section->vma;
- else {
- fprintf(stderr, "dso__load_sym() module %s lookup of %s failed\n",
- mod->name, section_name);
- goto out_elf_end;
- }
- }
+ } else if (kmodule)
+ sym.st_value += shdr.sh_offset;
/*
* We need to figure out if the object was created from C++ sources
* DWARF DW_compile_unit has this, but we don't always have access
@@ -638,15 +632,14 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
elf_name = demangled;
f = symbol__new(sym.st_value, sym.st_size, elf_name,
- self->sym_priv_size, obj_start, v);
+ self->sym_priv_size, v);
free(demangled);
if (!f)
goto out_elf_end;
- if (filter && filter(self, f))
+ if (filter && filter(map, f))
symbol__delete(f, self->sym_priv_size);
else {
- f->module = mod;
dso__insert_symbol(self, f);
nr++;
}
@@ -671,7 +664,7 @@ static char *dso__read_build_id(struct dso *self, int v)
char *build_id = NULL, *bid;
unsigned char *raw;
Elf *elf;
- int fd = open(self->name, O_RDONLY);
+ int fd = open(self->long_name, O_RDONLY);
if (fd < 0)
goto out;
@@ -680,7 +673,7 @@ static char *dso__read_build_id(struct dso *self, int v)
if (elf == NULL) {
if (v)
fprintf(stderr, "%s: cannot read %s ELF file.\n",
- __func__, self->name);
+ __func__, self->long_name);
goto out_close;
}
@@ -709,7 +702,7 @@ static char *dso__read_build_id(struct dso *self, int v)
bid += 2;
}
if (v >= 2)
- printf("%s(%s): %s\n", __func__, self->name, build_id);
+ printf("%s(%s): %s\n", __func__, self->long_name, build_id);
out_elf_end:
elf_end(elf);
out_close:
@@ -727,6 +720,7 @@ char dso__symtab_origin(const struct dso *self)
[DSO__ORIG_UBUNTU] = 'u',
[DSO__ORIG_BUILDID] = 'b',
[DSO__ORIG_DSO] = 'd',
+ [DSO__ORIG_KMODULE] = 'K',
};
if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND)
@@ -734,7 +728,7 @@ char dso__symtab_origin(const struct dso *self)
return origin[self->origin];
}
-int dso__load(struct dso *self, symbol_filter_t filter, int v)
+int dso__load(struct dso *self, struct map *map, symbol_filter_t filter, int v)
{
int size = PATH_MAX;
char *name = malloc(size), *build_id = NULL;
@@ -747,7 +741,7 @@ int dso__load(struct dso *self, symbol_filter_t filter, int v)
self->adjust_symbols = 0;
if (strncmp(self->name, "/tmp/perf-", 10) == 0) {
- ret = dso__load_perf_map(self, filter, v);
+ ret = dso__load_perf_map(self, map, filter, v);
self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT :
DSO__ORIG_NOT_FOUND;
return ret;
@@ -760,10 +754,12 @@ more:
self->origin++;
switch (self->origin) {
case DSO__ORIG_FEDORA:
- snprintf(name, size, "/usr/lib/debug%s.debug", self->name);
+ snprintf(name, size, "/usr/lib/debug%s.debug",
+ self->long_name);
break;
case DSO__ORIG_UBUNTU:
- snprintf(name, size, "/usr/lib/debug%s", self->name);
+ snprintf(name, size, "/usr/lib/debug%s",
+ self->long_name);
break;
case DSO__ORIG_BUILDID:
build_id = dso__read_build_id(self, v);
@@ -777,7 +773,7 @@ more:
self->origin++;
/* Fall thru */
case DSO__ORIG_DSO:
- snprintf(name, size, "%s", self->name);
+ snprintf(name, size, "%s", self->long_name);
break;
default:
@@ -787,7 +783,7 @@ more:
fd = open(name, O_RDONLY);
} while (fd < 0);
- ret = dso__load_sym(self, fd, name, filter, v, NULL);
+ ret = dso__load_sym(self, map, name, fd, filter, 0, 0, v);
close(fd);
/*
@@ -808,89 +804,247 @@ out:
return ret;
}
-static int dso__load_module(struct dso *self, struct mod_dso *mods, const char *name,
- symbol_filter_t filter, int v)
+static struct rb_root kernel_maps;
+struct map *kernel_map;
+
+static void kernel_maps__insert(struct map *map)
{
- struct module *mod = mod_dso__find_module(mods, name);
- int err = 0, fd;
+ maps__insert(&kernel_maps, map);
+}
- if (mod == NULL || !mod->active)
- return err;
+struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp)
+{
+ /*
+ * We can't have kernel_map in kernel_maps because it spans an address
+ * space that includes the modules. The right way to fix this is to
+ * create several maps, so that we don't have overlapping ranges with
+ * modules. For now lets look first on the kernel dso.
+ */
+ struct map *map = maps__find(&kernel_maps, ip);
+ struct symbol *sym;
+
+ if (map) {
+ ip = map->map_ip(map, ip);
+ sym = map->dso->find_symbol(map->dso, ip);
+ } else {
+ map = kernel_map;
+ sym = map->dso->find_symbol(map->dso, ip);
+ }
- fd = open(mod->path, O_RDONLY);
+ if (mapp)
+ *mapp = map;
- if (fd < 0)
+ return sym;
+}
+
+struct map *kernel_maps__find_by_dso_name(const char *name)
+{
+ struct rb_node *nd;
+
+ for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
+ struct map *map = rb_entry(nd, struct map, rb_node);
+
+ if (map->dso && strcmp(map->dso->name, name) == 0)
+ return map;
+ }
+
+ return NULL;
+}
+
+static int dso__load_module_sym(struct dso *self, struct map *map,
+ symbol_filter_t filter, int v)
+{
+ int err = 0, fd = open(self->long_name, O_RDONLY);
+
+ if (fd < 0) {
+ if (v)
+ fprintf(stderr, "%s: cannot open %s\n",
+ __func__, self->long_name);
return err;
+ }
- err = dso__load_sym(self, fd, name, filter, v, mod);
+ err = dso__load_sym(self, map, self->long_name, fd, filter, 0, 1, v);
close(fd);
return err;
}
-int dso__load_modules(struct dso *self, symbol_filter_t filter, int v)
+static int dsos__load_modules_sym_dir(char *dirname,
+ symbol_filter_t filter, int v)
{
- struct mod_dso *mods = mod_dso__new_dso("modules");
- struct module *pos;
- struct rb_node *next;
- int err, count = 0;
+ struct dirent *dent;
+ int nr_symbols = 0, err;
+ DIR *dir = opendir(dirname);
- err = mod_dso__load_modules(mods);
+ if (!dir) {
+ if (v)
+ fprintf(stderr, "%s: cannot open %s dir\n", __func__,
+ dirname);
+ return -1;
+ }
- if (err <= 0)
- return err;
+ while ((dent = readdir(dir)) != NULL) {
+ char path[PATH_MAX];
+
+ if (dent->d_type == DT_DIR) {
+ if (!strcmp(dent->d_name, ".") ||
+ !strcmp(dent->d_name, ".."))
+ continue;
+
+ snprintf(path, sizeof(path), "%s/%s",
+ dirname, dent->d_name);
+ err = dsos__load_modules_sym_dir(path, filter, v);
+ if (err < 0)
+ goto failure;
+ } else {
+ char *dot = strrchr(dent->d_name, '.'),
+ dso_name[PATH_MAX];
+ struct map *map;
+ struct rb_node *last;
+
+ if (dot == NULL || strcmp(dot, ".ko"))
+ continue;
+ snprintf(dso_name, sizeof(dso_name), "[%.*s]",
+ (int)(dot - dent->d_name), dent->d_name);
+
+ map = kernel_maps__find_by_dso_name(dso_name);
+ if (map == NULL)
+ continue;
+
+ snprintf(path, sizeof(path), "%s/%s",
+ dirname, dent->d_name);
+
+ map->dso->long_name = strdup(path);
+ if (map->dso->long_name == NULL)
+ goto failure;
+
+ err = dso__load_module_sym(map->dso, map, filter, v);
+ if (err < 0)
+ goto failure;
+ last = rb_last(&map->dso->syms);
+ if (last) {
+ struct symbol *sym;
+ sym = rb_entry(last, struct symbol, rb_node);
+ map->end = map->start + sym->end;
+ }
+ }
+ nr_symbols += err;
+ }
- /*
- * Iterate over modules, and load active symbols.
- */
- next = rb_first(&mods->mods);
- while (next) {
- pos = rb_entry(next, struct module, rb_node);
- err = dso__load_module(self, mods, pos->name, filter, v);
+ return nr_symbols;
+failure:
+ closedir(dir);
+ return -1;
+}
- if (err < 0)
- break;
+static int dsos__load_modules_sym(symbol_filter_t filter, int v)
+{
+ struct utsname uts;
+ char modules_path[PATH_MAX];
- next = rb_next(&pos->rb_node);
- count += err;
- }
+ if (uname(&uts) < 0)
+ return -1;
- if (err < 0) {
- mod_dso__delete_modules(mods);
- mod_dso__delete_self(mods);
- return err;
- }
+ snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel",
+ uts.release);
- return count;
+ return dsos__load_modules_sym_dir(modules_path, filter, v);
}
-static inline void dso__fill_symbol_holes(struct dso *self)
+/*
+ * Constructor variant for modules (where we know from /proc/modules where
+ * they are loaded) and for vmlinux, where only after we load all the
+ * symbols we'll know where it starts and ends.
+ */
+static struct map *map__new2(u64 start, struct dso *dso)
{
- struct symbol *prev = NULL;
- struct rb_node *nd;
+ struct map *self = malloc(sizeof(*self));
- for (nd = rb_last(&self->syms); nd; nd = rb_prev(nd)) {
- struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
+ if (self != NULL) {
+ self->start = start;
+ /*
+ * Will be filled after we load all the symbols
+ */
+ self->end = 0;
+
+ self->pgoff = 0;
+ self->dso = dso;
+ self->map_ip = map__map_ip;
+ RB_CLEAR_NODE(&self->rb_node);
+ }
+ return self;
+}
+
+int dsos__load_modules(unsigned int sym_priv_size,
+ symbol_filter_t filter, int v)
+{
+ char *line = NULL;
+ size_t n;
+ FILE *file = fopen("/proc/modules", "r");
+ struct map *map;
- if (prev) {
- u64 hole = 0;
- int alias = pos->start == prev->start;
+ if (file == NULL)
+ return -1;
- if (!alias)
- hole = prev->start - pos->end - 1;
+ while (!feof(file)) {
+ char name[PATH_MAX];
+ u64 start;
+ struct dso *dso;
+ char *sep;
+ int line_len;
- if (hole || alias) {
- if (alias)
- pos->end = prev->end;
- else if (hole)
- pos->end = prev->start - 1;
- }
+ line_len = getline(&line, &n, file);
+ if (line_len < 0)
+ break;
+
+ if (!line)
+ goto out_failure;
+
+ line[--line_len] = '\0'; /* \n */
+
+ sep = strrchr(line, 'x');
+ if (sep == NULL)
+ continue;
+
+ hex2u64(sep + 1, &start);
+
+ sep = strchr(line, ' ');
+ if (sep == NULL)
+ continue;
+
+ *sep = '\0';
+
+ snprintf(name, sizeof(name), "[%s]", line);
+ dso = dso__new(name, sym_priv_size);
+
+ if (dso == NULL)
+ goto out_delete_line;
+
+ map = map__new2(start, dso);
+ if (map == NULL) {
+ dso__delete(dso);
+ goto out_delete_line;
}
- prev = pos;
+
+ dso->origin = DSO__ORIG_KMODULE;
+ kernel_maps__insert(map);
+ dsos__add(dso);
}
+
+ free(line);
+ fclose(file);
+
+ v = 1;
+ return dsos__load_modules_sym(filter, v);
+
+out_delete_line:
+ free(line);
+out_failure:
+ return -1;
}
-static int dso__load_vmlinux(struct dso *self, const char *vmlinux,
+static int dso__load_vmlinux(struct dso *self, struct map *map,
+ const char *vmlinux,
symbol_filter_t filter, int v)
{
int err, fd = open(vmlinux, O_RDONLY);
@@ -898,28 +1052,36 @@ static int dso__load_vmlinux(struct dso *self, const char *vmlinux,
if (fd < 0)
return -1;
- err = dso__load_sym(self, fd, vmlinux, filter, v, NULL);
-
- if (err > 0)
- dso__fill_symbol_holes(self);
+ err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0, v);
close(fd);
return err;
}
-int dso__load_kernel(struct dso *self, const char *vmlinux,
- symbol_filter_t filter, int v, int use_modules)
+int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
+ symbol_filter_t filter, int v, int use_modules)
{
int err = -1;
+ struct dso *dso = dso__new(vmlinux, sym_priv_size);
+
+ if (dso == NULL)
+ return -1;
+
+ dso->short_name = "[kernel]";
+ kernel_map = map__new2(0, dso);
+ if (kernel_map == NULL)
+ goto out_delete_dso;
+
+ kernel_map->map_ip = vdso__map_ip;
if (vmlinux) {
- err = dso__load_vmlinux(self, vmlinux, filter, v);
+ err = dso__load_vmlinux(dso, kernel_map, vmlinux, filter, v);
if (err > 0 && use_modules) {
- int syms = dso__load_modules(self, filter, v);
+ int syms = dsos__load_modules(sym_priv_size, filter, v);
if (syms < 0) {
- fprintf(stderr, "dso__load_modules failed!\n");
+ fprintf(stderr, "dsos__load_modules failed!\n");
return syms;
}
err += syms;
@@ -927,18 +1089,34 @@ int dso__load_kernel(struct dso *self, const char *vmlinux,
}
if (err <= 0)
- err = dso__load_kallsyms(self, filter, v);
+ err = dso__load_kallsyms(dso, kernel_map, filter, v);
+
+ if (err > 0) {
+ struct rb_node *node = rb_first(&dso->syms);
+ struct symbol *sym = rb_entry(node, struct symbol, rb_node);
- if (err > 0)
- self->origin = DSO__ORIG_KERNEL;
+ kernel_map->start = sym->start;
+ node = rb_last(&dso->syms);
+ sym = rb_entry(node, struct symbol, rb_node);
+ kernel_map->end = sym->end;
+
+ dso->origin = DSO__ORIG_KERNEL;
+ /*
+ * XXX See kernel_maps__find_symbol comment
+ * kernel_maps__insert(kernel_map)
+ */
+ dsos__add(dso);
+ }
return err;
+
+out_delete_dso:
+ dso__delete(dso);
+ return -1;
}
LIST_HEAD(dsos);
-struct dso *kernel_dso;
struct dso *vdso;
-struct dso *hypervisor_dso;
const char *vmlinux_name = "vmlinux";
int modules;
@@ -970,7 +1148,7 @@ struct dso *dsos__findnew(const char *name)
if (!dso)
goto out_delete_dso;
- nr = dso__load(dso, NULL, verbose);
+ nr = dso__load(dso, NULL, NULL, verbose);
if (nr < 0) {
eprintf("Failed to open: %s\n", name);
goto out_delete_dso;
@@ -995,43 +1173,20 @@ void dsos__fprintf(FILE *fp)
dso__fprintf(pos, fp);
}
-static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
-{
- return dso__find_symbol(dso, ip);
-}
-
int load_kernel(void)
{
- int err;
-
- kernel_dso = dso__new("[kernel]", 0);
- if (!kernel_dso)
+ if (dsos__load_kernel(vmlinux_name, 0, NULL, verbose, modules) <= 0)
return -1;
- err = dso__load_kernel(kernel_dso, vmlinux_name, NULL, verbose, modules);
- if (err <= 0) {
- dso__delete(kernel_dso);
- kernel_dso = NULL;
- } else
- dsos__add(kernel_dso);
-
vdso = dso__new("[vdso]", 0);
if (!vdso)
return -1;
- vdso->find_symbol = vdso__find_symbol;
-
dsos__add(vdso);
- hypervisor_dso = dso__new("[hypervisor]", 0);
- if (!hypervisor_dso)
- return -1;
- dsos__add(hypervisor_dso);
-
- return err;
+ return 0;
}
-
void symbol__init(void)
{
elf_version(EV_CURRENT);
--
cgit v1.2.3-70-g09d2
From af427bf529c5991be8d1a36f43e2d0141f532f63 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 5 Oct 2009 14:26:17 -0300
Subject: perf tools: Create maps for modules when processing kallsyms
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
So that we get kallsyms processing closer to vmlinux + modules
symtabs processing.
One change in behaviour is that since when one specifies --vmlinux
-m should be used to ask for modules, so it is now for kallsyms as
well.
Also continue if one manages to load the vmlinux data but module
processing fails, so that at least some analisys can be done with
part of the needed symbols.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 161 +++++++++++++++++++++++++++++++++++------------
tools/perf/util/symbol.h | 2 -
2 files changed, 122 insertions(+), 41 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index e8829689947..4dfdefd5ec7 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -27,6 +27,44 @@ enum dso_origin {
static void dsos__add(struct dso *dso);
static struct dso *dsos__find(const char *name);
+static struct rb_root kernel_maps;
+
+static void dso__set_symbols_end(struct dso *self)
+{
+ struct rb_node *nd, *prevnd = rb_first(&self->syms);
+
+ if (prevnd == NULL)
+ return;
+
+ for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
+ struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node),
+ *curr = rb_entry(nd, struct symbol, rb_node);
+
+ if (prev->end == prev->start)
+ prev->end = curr->start - 1;
+ prevnd = nd;
+ }
+}
+
+static void kernel_maps__fixup_sym_end(void)
+{
+ struct map *prev, *curr;
+ struct rb_node *nd, *prevnd = rb_first(&kernel_maps);
+
+ if (prevnd == NULL)
+ return;
+
+ curr = rb_entry(prevnd, struct map, rb_node);
+ dso__set_symbols_end(curr->dso);
+
+ for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
+ prev = curr;
+ curr = rb_entry(nd, struct map, rb_node);
+ prev->end = curr->start - 1;
+ dso__set_symbols_end(curr->dso);
+ }
+}
+
static struct symbol *symbol__new(u64 start, u64 len, const char *name,
unsigned int priv_size, int v)
{
@@ -162,10 +200,9 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
return ret;
}
-static int dso__load_kallsyms(struct dso *self, struct map *map,
- symbol_filter_t filter, int v)
+static int maps__load_kallsyms(symbol_filter_t filter, int use_modules, int v)
{
- struct rb_node *nd, *prevnd;
+ struct map *map = kernel_map;
char *line = NULL;
size_t n;
FILE *file = fopen("/proc/kallsyms", "r");
@@ -179,6 +216,7 @@ static int dso__load_kallsyms(struct dso *self, struct map *map,
struct symbol *sym;
int line_len, len;
char symbol_type;
+ char *module, *symbol_name;
line_len = getline(&line, &n, file);
if (line_len < 0)
@@ -201,40 +239,50 @@ static int dso__load_kallsyms(struct dso *self, struct map *map,
*/
if (symbol_type != 'T' && symbol_type != 'W')
continue;
+
+ symbol_name = line + len + 2;
+ module = strchr(symbol_name, '\t');
+ if (module) {
+ char *module_name_end;
+
+ if (!use_modules)
+ continue;
+ *module = '\0';
+ module = strchr(module + 1, '[');
+ if (!module)
+ continue;
+ module_name_end = strchr(module + 1, ']');
+ if (!module_name_end)
+ continue;
+ *(module_name_end + 1) = '\0';
+ if (strcmp(map->dso->name, module)) {
+ map = kernel_maps__find_by_dso_name(module);
+ if (!map) {
+ fputs("/proc/{kallsyms,modules} "
+ "inconsistency!\n", stderr);
+ return -1;
+ }
+ }
+ start = map->map_ip(map, start);
+ } else
+ map = kernel_map;
/*
* Well fix up the end later, when we have all sorted.
*/
- sym = symbol__new(start, 0xdead, line + len + 2,
- self->sym_priv_size, v);
+ sym = symbol__new(start, 0, symbol_name,
+ map->dso->sym_priv_size, v);
if (sym == NULL)
goto out_delete_line;
if (filter && filter(map, sym))
- symbol__delete(sym, self->sym_priv_size);
+ symbol__delete(sym, map->dso->sym_priv_size);
else {
- dso__insert_symbol(self, sym);
+ dso__insert_symbol(map->dso, sym);
count++;
}
}
- /*
- * Now that we have all sorted out, just set the ->end of all
- * symbols
- */
- prevnd = rb_first(&self->syms);
-
- if (prevnd == NULL)
- goto out_delete_line;
-
- for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
- struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node),
- *curr = rb_entry(nd, struct symbol, rb_node);
-
- prev->end = curr->start - 1;
- prevnd = nd;
- }
-
free(line);
fclose(file);
@@ -246,6 +294,24 @@ out_failure:
return -1;
}
+static size_t kernel_maps__fprintf(FILE *fp)
+{
+ size_t printed = fprintf(stderr, "Kernel maps:\n");
+ struct rb_node *nd;
+
+ printed += map__fprintf(kernel_map, fp);
+ printed += dso__fprintf(kernel_map->dso, fp);
+
+ for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
+ struct map *pos = rb_entry(nd, struct map, rb_node);
+
+ printed += map__fprintf(pos, fp);
+ printed += dso__fprintf(pos->dso, fp);
+ }
+
+ return printed + fprintf(stderr, "END kernel maps\n");
+}
+
static int dso__load_perf_map(struct dso *self, struct map *map,
symbol_filter_t filter, int v)
{
@@ -598,6 +664,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
char *demangled;
int is_label = elf_sym__is_label(&sym);
const char *section_name;
+ u64 sh_offset = 0;
if (!is_label && !elf_sym__is_function(&sym))
continue;
@@ -613,14 +680,18 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
section_name = elf_sec__name(&shdr, secstrs);
+ if ((kernel || kmodule)) {
+ if (strstr(section_name, ".init"))
+ sh_offset = shdr.sh_offset;
+ }
+
if (self->adjust_symbols) {
if (v >= 2)
printf("adjusting symbol: st_value: %Lx sh_addr: %Lx sh_offset: %Lx\n",
(u64)sym.st_value, (u64)shdr.sh_addr, (u64)shdr.sh_offset);
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
- } else if (kmodule)
- sym.st_value += shdr.sh_offset;
+ }
/*
* We need to figure out if the object was created from C++ sources
* DWARF DW_compile_unit has this, but we don't always have access
@@ -631,7 +702,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
if (demangled != NULL)
elf_name = demangled;
- f = symbol__new(sym.st_value, sym.st_size, elf_name,
+ f = symbol__new(sym.st_value + sh_offset, sym.st_size, elf_name,
self->sym_priv_size, v);
free(demangled);
if (!f)
@@ -804,7 +875,6 @@ out:
return ret;
}
-static struct rb_root kernel_maps;
struct map *kernel_map;
static void kernel_maps__insert(struct map *map)
@@ -975,8 +1045,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
return self;
}
-int dsos__load_modules(unsigned int sym_priv_size,
- symbol_filter_t filter, int v)
+static int dsos__load_modules(unsigned int sym_priv_size)
{
char *line = NULL;
size_t n;
@@ -1034,8 +1103,7 @@ int dsos__load_modules(unsigned int sym_priv_size,
free(line);
fclose(file);
- v = 1;
- return dsos__load_modules_sym(filter, v);
+ return 0;
out_delete_line:
free(line);
@@ -1075,25 +1143,37 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
kernel_map->map_ip = vdso__map_ip;
+ if (use_modules && dsos__load_modules(sym_priv_size) < 0) {
+ fprintf(stderr, "Failed to load list of modules in use! "
+ "Continuing...\n");
+ use_modules = 0;
+ }
+
if (vmlinux) {
err = dso__load_vmlinux(dso, kernel_map, vmlinux, filter, v);
if (err > 0 && use_modules) {
- int syms = dsos__load_modules(sym_priv_size, filter, v);
+ int syms = dsos__load_modules_sym(filter, v);
- if (syms < 0) {
- fprintf(stderr, "dsos__load_modules failed!\n");
- return syms;
- }
- err += syms;
+ if (syms < 0)
+ fprintf(stderr, "Failed to read module symbols!"
+ " Continuing...\n");
+ else
+ err += syms;
}
}
if (err <= 0)
- err = dso__load_kallsyms(dso, kernel_map, filter, v);
+ err = maps__load_kallsyms(filter, use_modules, v);
if (err > 0) {
struct rb_node *node = rb_first(&dso->syms);
struct symbol *sym = rb_entry(node, struct symbol, rb_node);
+ /*
+ * Now that we have all sorted out, just set the ->end of all
+ * symbols that still don't have it.
+ */
+ dso__set_symbols_end(dso);
+ kernel_maps__fixup_sym_end();
kernel_map->start = sym->start;
node = rb_last(&dso->syms);
@@ -1106,6 +1186,9 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
* kernel_maps__insert(kernel_map)
*/
dsos__add(dso);
+
+ if (v > 0)
+ kernel_maps__fprintf(stderr);
}
return err;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 5339fd82ec9..2e4522edeb0 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -70,8 +70,6 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
symbol_filter_t filter, int verbose, int modules);
-int dsos__load_modules(unsigned int sym_priv_size, symbol_filter_t filter,
- int verbose);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter,
int verbose);
struct dso *dsos__findnew(const char *name);
--
cgit v1.2.3-70-g09d2
From a2a99e8e12798706ec1026e5d8fc36f7c86122ce Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 5 Oct 2009 14:26:18 -0300
Subject: perf tools: /proc/modules names don't always match its name
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
$ cut -d' ' -f1 /proc/modules|grep _|wc -l
29
$ cut -d' ' -f1 /proc/modules|grep _|sed 's/$/.ko'/g|while read n;do find /lib/modules/`uname -r` -name $n;done|wc -l
12
For instance:
$ grep ^aes_x86 /proc/modules
aes_x86_64 9056 2 - Live 0xffffffffa0091000
$ l /lib/modules/2.6.31-tip/kernel/arch/x86/crypto/aes-x86_64.ko
-rw-r--r-- 1 root root 136438 2009-09-22 19:05 /lib/modules/2.6.31-tip/kernel/arch/x86/crypto/aes-x86_64.ko
Handle that by introducing a strxfrchar routine that replaces
dashes with underscores when matching file names to loaded modules.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/string.c | 11 +++++++++++
tools/perf/util/string.h | 1 +
tools/perf/util/symbol.c | 3 ++-
3 files changed, 14 insertions(+), 1 deletion(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index c93eca9a7be..04743d3e903 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -1,3 +1,4 @@
+#include <string.h>
#include "string.h"
static int hex(char ch)
@@ -32,3 +33,13 @@ int hex2u64(const char *ptr, u64 *long_val)
return p - ptr;
}
+
+char *strxfrchar(char *s, char from, char to)
+{
+ char *p = s;
+
+ while ((p = strchr(p, from)) != NULL)
+ *p++ = to;
+
+ return s;
+}
diff --git a/tools/perf/util/string.h b/tools/perf/util/string.h
index 15c827475e7..2c84bf65ba0 100644
--- a/tools/perf/util/string.h
+++ b/tools/perf/util/string.h
@@ -4,6 +4,7 @@
#include "types.h"
int hex2u64(const char *ptr, u64 *val);
+char *strxfrchar(char *s, char from, char to);
#define _STR(x) #x
#define STR(x) _STR(x)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 4dfdefd5ec7..e3eebdd682d 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -189,7 +189,7 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip)
size_t dso__fprintf(struct dso *self, FILE *fp)
{
- size_t ret = fprintf(fp, "dso: %s\n", self->long_name);
+ size_t ret = fprintf(fp, "dso: %s\n", self->short_name);
struct rb_node *nd;
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
@@ -977,6 +977,7 @@ static int dsos__load_modules_sym_dir(char *dirname,
snprintf(dso_name, sizeof(dso_name), "[%.*s]",
(int)(dot - dent->d_name), dent->d_name);
+ strxfrchar(dso_name, '-', '_');
map = kernel_maps__find_by_dso_name(dso_name);
if (map == NULL)
continue;
--
cgit v1.2.3-70-g09d2
From da21d1b547cbaa2c026cf645753651c25d340923 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 7 Oct 2009 10:49:00 -0300
Subject: perf tools: Up the verbose level for some really verbose stuff
Like printing every symbol created.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1254923340-4870-1-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 4 ++--
tools/perf/builtin-report.c | 4 ++--
tools/perf/util/symbol.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 35ed97bd0c6..8c84320ecb0 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -658,10 +658,10 @@ more:
if (dump_trace)
return 0;
- if (verbose >= 3)
+ if (verbose > 3)
threads__fprintf(stdout, &threads);
- if (verbose >= 2)
+ if (verbose > 2)
dsos__fprintf(stdout);
collapse__resort();
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 87c4582303b..f57a23b19f3 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -880,10 +880,10 @@ static int __cmd_report(void)
if (dump_trace)
return 0;
- if (verbose >= 3)
+ if (verbose > 3)
threads__fprintf(stdout, &threads);
- if (verbose >= 2)
+ if (verbose > 2)
dsos__fprintf(stdout);
collapse__resort();
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 582ce72ca4d..a6887f94dfe 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -74,7 +74,7 @@ static struct symbol *symbol__new(u64 start, u64 len, const char *name,
if (!self)
return NULL;
- if (v >= 2)
+ if (v > 2)
printf("new symbol: %016Lx [%08lx]: %s, hist: %p\n",
start, (unsigned long)len, name, self->hist);
@@ -685,7 +685,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
}
if (self->adjust_symbols) {
- if (v >= 2)
+ if (v > 2)
printf("adjusting symbol: st_value: %Lx sh_addr: %Lx sh_offset: %Lx\n",
(u64)sym.st_value, (u64)shdr.sh_addr, (u64)shdr.sh_offset);
--
cgit v1.2.3-70-g09d2
From 2e538c4a1847291cf01218d4fe7bb4dc60fef7cf Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 7 Oct 2009 13:48:56 -0300
Subject: perf tools: Improve kernel/modules symbol lookup
This removes the ovelapping of vmlinux addresses with modules,
using the ELF section name when using --vmlinux and creating a
unique DSO name when using /proc/kallsyms ([kernel].N).
This is done by creating multiple 'struct map' instances for
address ranges backed by DSOs that have just the symbols for that
range and a name that is derived from the ELF section name.o
Now it is possible to ask for just the symbols in some particular
kernel section:
$ perf report -m --vmlinux ../build/tip-recvmmsg/vmlinux \
--dsos [kernel].vsyscall_fn | head -15
52.73% Xorg [.] vread_hpet
18.61% firefox [.] vread_hpet
14.50% npviewer.bin [.] vread_hpet
6.83% compiz [.] vread_hpet
5.73% glxgears [.] vread_hpet
0.63% java [.] vread_hpet
0.30% gnome-terminal [.] vread_hpet
0.23% perf [.] vread_hpet
0.18% xchat [.] vread_hpet
$
Now we don't have to first lookup the list of modules and then, if
it fails, vmlinux symbols, its just a simple lookup for the map
then the symbols, just like for threads.
Reports generated using /proc/kallsyms and --vmlinux should provide
the same results, modulo the DSO name for sections other than
".text".
But they don't right now because things like:
ffffffff81011c20-ffffffff81012068 system_call
ffffffff81011c30-ffffffff81011c9b system_call_after_swapgs
ffffffff81011c9c-ffffffff81011cb6 system_call_fastpath
ffffffff81011cb7-ffffffff81011cbb ret_from_sys_call
I.e. overlapping symbols, again some ASM special case that we have
to fixup.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1254934136-8503-1-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 288 +++++++++++++++++++++++++++++++++--------------
1 file changed, 201 insertions(+), 87 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a6887f94dfe..faa84f5d4f5 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -26,27 +26,35 @@ enum dso_origin {
static void dsos__add(struct dso *dso);
static struct dso *dsos__find(const char *name);
+static struct map *map__new2(u64 start, struct dso *dso);
+static void kernel_maps__insert(struct map *map);
static struct rb_root kernel_maps;
-static void dso__set_symbols_end(struct dso *self)
+static void dso__fixup_sym_end(struct dso *self)
{
struct rb_node *nd, *prevnd = rb_first(&self->syms);
+ struct symbol *curr, *prev;
if (prevnd == NULL)
return;
+ curr = rb_entry(prevnd, struct symbol, rb_node);
+
for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
- struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node),
- *curr = rb_entry(nd, struct symbol, rb_node);
+ prev = curr;
+ curr = rb_entry(nd, struct symbol, rb_node);
if (prev->end == prev->start)
prev->end = curr->start - 1;
- prevnd = nd;
}
+
+ /* Last entry */
+ if (curr->end == curr->start)
+ curr->end = roundup(curr->start, 4096);
}
-static void kernel_maps__fixup_sym_end(void)
+static void kernel_maps__fixup_end(void)
{
struct map *prev, *curr;
struct rb_node *nd, *prevnd = rb_first(&kernel_maps);
@@ -55,13 +63,17 @@ static void kernel_maps__fixup_sym_end(void)
return;
curr = rb_entry(prevnd, struct map, rb_node);
- dso__set_symbols_end(curr->dso);
for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
prev = curr;
curr = rb_entry(nd, struct map, rb_node);
prev->end = curr->start - 1;
- dso__set_symbols_end(curr->dso);
+ }
+
+ nd = rb_last(&curr->dso->syms);
+ if (nd) {
+ struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
+ curr->end = sym->end;
}
}
@@ -200,13 +212,16 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
return ret;
}
-static int maps__load_kallsyms(symbol_filter_t filter, int use_modules, int v)
+/*
+ * Loads the function entries in /proc/kallsyms into kernel_map->dso,
+ * so that we can in the next step set the symbol ->end address and then
+ * call kernel_maps__split_kallsyms.
+ */
+static int kernel_maps__load_all_kallsyms(int v)
{
- struct map *map = kernel_map;
char *line = NULL;
size_t n;
FILE *file = fopen("/proc/kallsyms", "r");
- int count = 0;
if (file == NULL)
goto out_failure;
@@ -216,7 +231,7 @@ static int maps__load_kallsyms(symbol_filter_t filter, int use_modules, int v)
struct symbol *sym;
int line_len, len;
char symbol_type;
- char *module, *symbol_name;
+ char *symbol_name;
line_len = getline(&line, &n, file);
if (line_len < 0)
@@ -241,20 +256,55 @@ static int maps__load_kallsyms(symbol_filter_t filter, int use_modules, int v)
continue;
symbol_name = line + len + 2;
- module = strchr(symbol_name, '\t');
- if (module) {
- char *module_name_end;
+ /*
+ * Will fix up the end later, when we have all symbols sorted.
+ */
+ sym = symbol__new(start, 0, symbol_name,
+ kernel_map->dso->sym_priv_size, v);
+ if (sym == NULL)
+ goto out_delete_line;
+
+ dso__insert_symbol(kernel_map->dso, sym);
+ }
+
+ free(line);
+ fclose(file);
+
+ return 0;
+
+out_delete_line:
+ free(line);
+out_failure:
+ return -1;
+}
+
+/*
+ * Split the symbols into maps, making sure there are no overlaps, i.e. the
+ * kernel range is broken in several maps, named [kernel].N, as we don't have
+ * the original ELF section names vmlinux have.
+ */
+static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
+{
+ struct map *map = kernel_map;
+ struct symbol *pos;
+ int count = 0;
+ struct rb_node *next = rb_first(&kernel_map->dso->syms);
+ int kernel_range = 0;
+
+ while (next) {
+ char *module;
+
+ pos = rb_entry(next, struct symbol, rb_node);
+ next = rb_next(&pos->rb_node);
+
+ module = strchr(pos->name, '\t');
+ if (module) {
if (!use_modules)
- continue;
- *module = '\0';
- module = strchr(module + 1, '[');
- if (!module)
- continue;
- module_name_end = strchr(module + 1, ']');
- if (!module_name_end)
- continue;
- *(module_name_end + 1) = '\0';
+ goto delete_symbol;
+
+ *module++ = '\0';
+
if (strcmp(map->dso->name, module)) {
map = kernel_maps__find_by_dso_name(module);
if (!map) {
@@ -263,50 +313,77 @@ static int maps__load_kallsyms(symbol_filter_t filter, int use_modules, int v)
return -1;
}
}
- start = map->map_ip(map, start);
- } else
- map = kernel_map;
- /*
- * Well fix up the end later, when we have all sorted.
- */
- sym = symbol__new(start, 0, symbol_name,
- map->dso->sym_priv_size, v);
+ /*
+ * So that we look just like we get from .ko files,
+ * i.e. not prelinked, relative to map->start.
+ */
+ pos->start = map->map_ip(map, pos->start);
+ pos->end = map->map_ip(map, pos->end);
+ } else if (map != kernel_map) {
+ char dso_name[PATH_MAX];
+ struct dso *dso;
+
+ snprintf(dso_name, sizeof(dso_name), "[kernel].%d",
+ kernel_range++);
+
+ dso = dso__new(dso_name,
+ kernel_map->dso->sym_priv_size);
+ if (dso == NULL)
+ return -1;
+
+ map = map__new2(pos->start, dso);
+ if (map == NULL) {
+ dso__delete(dso);
+ return -1;
+ }
- if (sym == NULL)
- goto out_delete_line;
+ map->map_ip = vdso__map_ip;
+ kernel_maps__insert(map);
+ ++kernel_range;
+ }
- if (filter && filter(map, sym))
- symbol__delete(sym, map->dso->sym_priv_size);
- else {
- dso__insert_symbol(map->dso, sym);
+ if (filter && filter(map, pos)) {
+delete_symbol:
+ rb_erase(&pos->rb_node, &kernel_map->dso->syms);
+ symbol__delete(pos, kernel_map->dso->sym_priv_size);
+ } else {
+ if (map != kernel_map) {
+ rb_erase(&pos->rb_node, &kernel_map->dso->syms);
+ dso__insert_symbol(map->dso, pos);
+ }
count++;
}
}
- free(line);
- fclose(file);
-
return count;
+}
-out_delete_line:
- free(line);
-out_failure:
- return -1;
+
+static int kernel_maps__load_kallsyms(symbol_filter_t filter,
+ int use_modules, int v)
+{
+ if (kernel_maps__load_all_kallsyms(v))
+ return -1;
+
+ dso__fixup_sym_end(kernel_map->dso);
+
+ return kernel_maps__split_kallsyms(filter, use_modules);
}
-static size_t kernel_maps__fprintf(FILE *fp)
+static size_t kernel_maps__fprintf(FILE *fp, int v)
{
size_t printed = fprintf(stderr, "Kernel maps:\n");
struct rb_node *nd;
- printed += map__fprintf(kernel_map, fp);
- printed += dso__fprintf(kernel_map->dso, fp);
-
for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
struct map *pos = rb_entry(nd, struct map, rb_node);
+ printed += fprintf(fp, "Map:");
printed += map__fprintf(pos, fp);
- printed += dso__fprintf(pos->dso, fp);
+ if (v > 1) {
+ printed += dso__fprintf(pos->dso, fp);
+ printed += fprintf(fp, "--\n");
+ }
}
return printed + fprintf(stderr, "END kernel maps\n");
@@ -594,6 +671,9 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
int fd, symbol_filter_t filter, int kernel,
int kmodule, int v)
{
+ struct map *curr_map = map;
+ struct dso *curr_dso = self;
+ size_t dso_name_len = strlen(self->short_name);
Elf_Data *symstrs, *secstrs;
uint32_t nr_syms;
int err = -1;
@@ -660,10 +740,9 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) {
struct symbol *f;
const char *elf_name;
- char *demangled;
+ char *demangled = NULL;
int is_label = elf_sym__is_label(&sym);
const char *section_name;
- u64 sh_offset = 0;
if (!is_label && !elf_sym__is_function(&sym))
continue;
@@ -677,14 +756,51 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
if (is_label && !elf_sec__is_text(&shdr, secstrs))
continue;
+ elf_name = elf_sym__name(&sym, symstrs);
section_name = elf_sec__name(&shdr, secstrs);
- if ((kernel || kmodule)) {
- if (strstr(section_name, ".init"))
- sh_offset = shdr.sh_offset;
+ if (kernel || kmodule) {
+ char dso_name[PATH_MAX];
+
+ if (strcmp(section_name,
+ curr_dso->short_name + dso_name_len) == 0)
+ goto new_symbol;
+
+ if (strcmp(section_name, ".text") == 0) {
+ curr_map = map;
+ curr_dso = self;
+ goto new_symbol;
+ }
+
+ snprintf(dso_name, sizeof(dso_name),
+ "%s%s", self->short_name, section_name);
+
+ curr_map = kernel_maps__find_by_dso_name(dso_name);
+ if (curr_map == NULL) {
+ u64 start = sym.st_value;
+
+ if (kmodule)
+ start += map->start + shdr.sh_offset;
+
+ curr_dso = dso__new(dso_name, self->sym_priv_size);
+ if (curr_dso == NULL)
+ goto out_elf_end;
+ curr_map = map__new2(start, curr_dso);
+ if (curr_map == NULL) {
+ dso__delete(curr_dso);
+ goto out_elf_end;
+ }
+ curr_map->map_ip = vdso__map_ip;
+ curr_dso->origin = DSO__ORIG_KERNEL;
+ kernel_maps__insert(curr_map);
+ dsos__add(curr_dso);
+ } else
+ curr_dso = curr_map->dso;
+
+ goto new_symbol;
}
- if (self->adjust_symbols) {
+ if (curr_dso->adjust_symbols) {
if (v > 2)
printf("adjusting symbol: st_value: %Lx sh_addr: %Lx sh_offset: %Lx\n",
(u64)sym.st_value, (u64)shdr.sh_addr, (u64)shdr.sh_offset);
@@ -696,25 +812,29 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
* DWARF DW_compile_unit has this, but we don't always have access
* to it...
*/
- elf_name = elf_sym__name(&sym, symstrs);
demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI);
if (demangled != NULL)
elf_name = demangled;
-
- f = symbol__new(sym.st_value + sh_offset, sym.st_size, elf_name,
- self->sym_priv_size, v);
+new_symbol:
+ f = symbol__new(sym.st_value, sym.st_size, elf_name,
+ curr_dso->sym_priv_size, v);
free(demangled);
if (!f)
goto out_elf_end;
- if (filter && filter(map, f))
- symbol__delete(f, self->sym_priv_size);
+ if (filter && filter(curr_map, f))
+ symbol__delete(f, curr_dso->sym_priv_size);
else {
- dso__insert_symbol(self, f);
+ dso__insert_symbol(curr_dso, f);
nr++;
}
}
+ /*
+ * For misannotated, zeroed, ASM function sizes.
+ */
+ if (nr > 0)
+ dso__fixup_sym_end(self);
err = nr;
out_elf_end:
elf_end(elf);
@@ -883,27 +1003,17 @@ static void kernel_maps__insert(struct map *map)
struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp)
{
- /*
- * We can't have kernel_map in kernel_maps because it spans an address
- * space that includes the modules. The right way to fix this is to
- * create several maps, so that we don't have overlapping ranges with
- * modules. For now lets look first on the kernel dso.
- */
struct map *map = maps__find(&kernel_maps, ip);
- struct symbol *sym;
+
+ if (mapp)
+ *mapp = map;
if (map) {
ip = map->map_ip(map, ip);
- sym = map->dso->find_symbol(map->dso, ip);
- } else {
- map = kernel_map;
- sym = map->dso->find_symbol(map->dso, ip);
+ return map->dso->find_symbol(map->dso, ip);
}
- if (mapp)
- *mapp = map;
-
- return sym;
+ return NULL;
}
struct map *kernel_maps__find_by_dso_name(const char *name)
@@ -994,6 +1104,14 @@ static int dsos__load_modules_sym_dir(char *dirname,
last = rb_last(&map->dso->syms);
if (last) {
struct symbol *sym;
+ /*
+ * We do this here as well, even having the
+ * symbol size found in the symtab because
+ * misannotated ASM symbols may have the size
+ * set to zero.
+ */
+ dso__fixup_sym_end(map->dso);
+
sym = rb_entry(last, struct symbol, rb_node);
map->end = map->start + sym->end;
}
@@ -1163,17 +1281,11 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
}
if (err <= 0)
- err = maps__load_kallsyms(filter, use_modules, v);
+ err = kernel_maps__load_kallsyms(filter, use_modules, v);
if (err > 0) {
struct rb_node *node = rb_first(&dso->syms);
struct symbol *sym = rb_entry(node, struct symbol, rb_node);
- /*
- * Now that we have all sorted out, just set the ->end of all
- * symbols that still don't have it.
- */
- dso__set_symbols_end(dso);
- kernel_maps__fixup_sym_end();
kernel_map->start = sym->start;
node = rb_last(&dso->syms);
@@ -1181,14 +1293,16 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
kernel_map->end = sym->end;
dso->origin = DSO__ORIG_KERNEL;
+ kernel_maps__insert(kernel_map);
/*
- * XXX See kernel_maps__find_symbol comment
- * kernel_maps__insert(kernel_map)
+ * Now that we have all sorted out, just set the ->end of all
+ * maps:
*/
+ kernel_maps__fixup_end();
dsos__add(dso);
if (v > 0)
- kernel_maps__fprintf(stderr);
+ kernel_maps__fprintf(stderr, v);
}
return err;
--
cgit v1.2.3-70-g09d2
From ed52ce2e3c33dc7626a40fa2da766d1a6460e543 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 19 Oct 2009 17:17:57 -0200
Subject: perf tools: Add ->unmap_ip operation to struct map
We need this because we get section relative addresses when
reading the symtabs, but when a tool like 'perf annotate' needs
to match these address to what 'objdump -dS' produces we need
the address + section back again.
So in annotate now we look at the 'struct hist_entry' instances
(that weren't really being used) so that we iterate only over
the symbols that had some hit and get the map where that
particular hit happened so that we can get the right address to
match with annotate.
Verified that at least:
perf annotate mmap_read_counter # Uses the ~/bin/perf binary
perf annotate --vmlinux /home/acme/git/build/perf/vmlinux intel_pmu_enable_all
on a 'perf record perf top' session seems to work.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1255979877-12533-1-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 62 +++++++++++++++++++++++++++++--------------
tools/perf/util/event.h | 8 +++++-
tools/perf/util/map.c | 6 +++--
tools/perf/util/symbol.c | 8 +++---
4 files changed, 58 insertions(+), 26 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 56ba71658d7..06f10278b28 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -58,9 +58,12 @@ static void hist_hit(struct hist_entry *he, u64 ip)
return;
sym_size = sym->end - sym->start;
- ip = he->map->map_ip(he->map, ip);
offset = ip - sym->start;
+ if (verbose)
+ fprintf(stderr, "%s: ip=%Lx\n", __func__,
+ he->map->unmap_ip(he->map, ip));
+
if (offset >= sym_size)
return;
@@ -83,8 +86,7 @@ static int hist_entry__add(struct thread *thread, struct map *map,
count, level, &hit);
if (he == NULL)
return -ENOMEM;
- if (hit)
- hist_hit(he, ip);
+ hist_hit(he, ip);
return 0;
}
@@ -260,14 +262,15 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
-static int
-parse_line(FILE *file, struct symbol *sym, u64 len)
+static int parse_line(FILE *file, struct hist_entry *he, u64 len)
{
+ struct symbol *sym = he->sym;
char *line = NULL, *tmp, *tmp2;
static const char *prev_line;
static const char *prev_color;
unsigned int offset;
size_t line_len;
+ u64 start;
s64 line_ip;
int ret;
char *c;
@@ -304,6 +307,8 @@ parse_line(FILE *file, struct symbol *sym, u64 len)
line_ip = -1;
}
+ start = he->map->unmap_ip(he->map, sym->start);
+
if (line_ip != -1) {
const char *path = NULL;
unsigned int hits = 0;
@@ -311,7 +316,7 @@ parse_line(FILE *file, struct symbol *sym, u64 len)
const char *color;
struct sym_ext *sym_ext = sym->priv;
- offset = line_ip - sym->start;
+ offset = line_ip - start;
if (offset < len)
hits = sym->hist[offset];
@@ -390,8 +395,10 @@ static void free_source_line(struct symbol *sym, int len)
/* Get the filename:line for the colored entries */
static void
-get_source_line(struct symbol *sym, int len, const char *filename)
+get_source_line(struct hist_entry *he, int len, const char *filename)
{
+ struct symbol *sym = he->sym;
+ u64 start;
int i;
char cmd[PATH_MAX * 2];
struct sym_ext *sym_ext;
@@ -404,6 +411,7 @@ get_source_line(struct symbol *sym, int len, const char *filename)
return;
sym_ext = sym->priv;
+ start = he->map->unmap_ip(he->map, sym->start);
for (i = 0; i < len; i++) {
char *path = NULL;
@@ -415,7 +423,7 @@ get_source_line(struct symbol *sym, int len, const char *filename)
if (sym_ext[i].percent <= 0.5)
continue;
- offset = sym->start + i;
+ offset = start + i;
sprintf(cmd, "addr2line -e %s %016llx", filename, offset);
fp = popen(cmd, "r");
if (!fp)
@@ -465,8 +473,11 @@ static void print_summary(const char *filename)
}
}
-static void annotate_sym(struct dso *dso, struct symbol *sym)
+static void annotate_sym(struct hist_entry *he)
{
+ struct map *map = he->map;
+ struct dso *dso = map->dso;
+ struct symbol *sym = he->sym;
const char *filename = dso->long_name, *d_filename;
u64 len;
char command[PATH_MAX*2];
@@ -475,6 +486,12 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
if (!filename)
return;
+ if (verbose)
+ fprintf(stderr, "%s: filename=%s, sym=%s, start=%Lx, end=%Lx\n",
+ __func__, filename, sym->name,
+ map->unmap_ip(map, sym->start),
+ map->unmap_ip(map, sym->end));
+
if (full_paths)
d_filename = filename;
else
@@ -483,7 +500,7 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
len = sym->end - sym->start;
if (print_line) {
- get_source_line(sym, len, filename);
+ get_source_line(he, len, filename);
print_summary(filename);
}
@@ -496,7 +513,8 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
dso, dso->long_name, sym, sym->name);
sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s",
- sym->start, sym->end, filename, filename);
+ map->unmap_ip(map, sym->start), map->unmap_ip(map, sym->end),
+ filename, filename);
if (verbose >= 3)
printf("doing: %s\n", command);
@@ -506,7 +524,7 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
return;
while (!feof(file)) {
- if (parse_line(file, sym, len) < 0)
+ if (parse_line(file, he, len) < 0)
break;
}
@@ -518,18 +536,22 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
static void find_annotations(void)
{
struct rb_node *nd;
- struct dso *dso;
int count = 0;
- list_for_each_entry(dso, &dsos, node) {
+ for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
+ struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
- for (nd = rb_first(&dso->syms); nd; nd = rb_next(nd)) {
- struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
+ if (he->sym && he->sym->hist) {
+ annotate_sym(he);
+ count++;
+ /*
+ * Since we have a hist_entry per IP for the same
+ * symbol, free he->sym->hist to signal we already
+ * processed this symbol.
+ */
+ free(he->sym->hist);
+ he->sym->hist = NULL;
- if (sym->hist) {
- annotate_sym(dso, sym);
- count++;
- }
}
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index c2e62be6279..6b5be56a827 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -82,6 +82,7 @@ struct map {
u64 end;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
+ u64 (*unmap_ip)(struct map *, u64);
struct dso *dso;
};
@@ -90,7 +91,12 @@ static inline u64 map__map_ip(struct map *map, u64 ip)
return ip - map->start + map->pgoff;
}
-static inline u64 vdso__map_ip(struct map *map __used, u64 ip)
+static inline u64 map__unmap_ip(struct map *map, u64 ip)
+{
+ return ip + map->start - map->pgoff;
+}
+
+static inline u64 identity__map_ip(struct map *map __used, u64 ip)
{
return ip;
}
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 804e0238273..4e203d144f9 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -54,9 +54,11 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
goto out_delete;
if (self->dso == vdso || anon)
- self->map_ip = vdso__map_ip;
- else
+ self->map_ip = self->unmap_ip = identity__map_ip;
+ else {
self->map_ip = map__map_ip;
+ self->unmap_ip = map__unmap_ip;
+ }
}
return self;
out_delete:
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index faa84f5d4f5..3350119f690 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -337,7 +337,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
return -1;
}
- map->map_ip = vdso__map_ip;
+ map->map_ip = map->unmap_ip = identity__map_ip;
kernel_maps__insert(map);
++kernel_range;
}
@@ -790,7 +790,8 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
dso__delete(curr_dso);
goto out_elf_end;
}
- curr_map->map_ip = vdso__map_ip;
+ curr_map->map_ip = identity__map_ip;
+ curr_map->unmap_ip = identity__map_ip;
curr_dso->origin = DSO__ORIG_KERNEL;
kernel_maps__insert(curr_map);
dsos__add(curr_dso);
@@ -1158,6 +1159,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
self->pgoff = 0;
self->dso = dso;
self->map_ip = map__map_ip;
+ self->unmap_ip = map__unmap_ip;
RB_CLEAR_NODE(&self->rb_node);
}
return self;
@@ -1259,7 +1261,7 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
if (kernel_map == NULL)
goto out_delete_dso;
- kernel_map->map_ip = vdso__map_ip;
+ kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
if (use_modules && dsos__load_modules(sym_priv_size) < 0) {
fprintf(stderr, "Failed to load list of modules in use! "
--
cgit v1.2.3-70-g09d2
From e42049926ebdcae24fdfdc8f0e3ff8f05f24a60b Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 20 Oct 2009 14:25:40 -0200
Subject: perf annotate: Use the sym_priv_size area for the histogram
We have this sym_priv_size mechanism for attaching private areas
to struct symbol entries but annotate wasn't using it, adding
private areas to struct symbol in addition to a ->priv pointer.
Scrap all that and use the sym_priv_size mechanism.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256055940-19511-1-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 109 ++++++++++++++++++++++++++++++------------
tools/perf/builtin-report.c | 2 +-
tools/perf/util/data_map.c | 2 +-
tools/perf/util/event.h | 8 +++-
tools/perf/util/map.c | 21 +++++++-
tools/perf/util/symbol.c | 56 ++++++++--------------
tools/perf/util/symbol.h | 17 +++----
7 files changed, 132 insertions(+), 83 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 06f10278b28..245692530de 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -37,12 +37,44 @@ static int print_line;
static unsigned long page_size;
static unsigned long mmap_window = 32;
+struct sym_hist {
+ u64 sum;
+ u64 ip[0];
+};
+
struct sym_ext {
struct rb_node node;
double percent;
char *path;
};
+struct sym_priv {
+ struct sym_hist *hist;
+ struct sym_ext *ext;
+};
+
+static const char *sym_hist_filter;
+
+static int symbol_filter(struct map *map, struct symbol *sym)
+{
+ if (strcmp(sym->name, sym_hist_filter) == 0) {
+ struct sym_priv *priv = dso__sym_priv(map->dso, sym);
+ const int size = (sizeof(*priv->hist) +
+ (sym->end - sym->start) * sizeof(u64));
+
+ priv->hist = malloc(size);
+ if (priv->hist)
+ memset(priv->hist, 0, size);
+ return 0;
+ }
+ /*
+ * FIXME: We should really filter it out, as we don't want to go thru symbols
+ * we're not interested, and if a DSO ends up with no symbols, delete it too,
+ * but right now the kernel loading routines in symbol.c bail out if no symbols
+ * are found, fix it later.
+ */
+ return 0;
+}
/*
* collect histogram counts
@@ -51,10 +83,16 @@ static void hist_hit(struct hist_entry *he, u64 ip)
{
unsigned int sym_size, offset;
struct symbol *sym = he->sym;
+ struct sym_priv *priv;
+ struct sym_hist *h;
he->count++;
- if (!sym || !sym->hist)
+ if (!sym || !he->map)
+ return;
+
+ priv = dso__sym_priv(he->map->dso, sym);
+ if (!priv->hist)
return;
sym_size = sym->end - sym->start;
@@ -67,15 +105,16 @@ static void hist_hit(struct hist_entry *he, u64 ip)
if (offset >= sym_size)
return;
- sym->hist_sum++;
- sym->hist[offset]++;
+ h = priv->hist;
+ h->sum++;
+ h->ip[offset]++;
if (verbose >= 3)
printf("%p %s: count++ [ip: %p, %08Lx] => %Ld\n",
(void *)(unsigned long)he->sym->start,
he->sym->name,
(void *)(unsigned long)ip, ip - he->sym->start,
- sym->hist[offset]);
+ h->ip[offset]);
}
static int hist_entry__add(struct thread *thread, struct map *map,
@@ -162,7 +201,9 @@ got_map:
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, NULL, 0);
+ struct map *map = map__new(&event->mmap, NULL, 0,
+ sizeof(struct sym_priv), symbol_filter,
+ verbose);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d: [%p(%p) @ %p]: %s\n",
@@ -314,17 +355,19 @@ static int parse_line(FILE *file, struct hist_entry *he, u64 len)
unsigned int hits = 0;
double percent = 0.0;
const char *color;
- struct sym_ext *sym_ext = sym->priv;
+ struct sym_priv *priv = dso__sym_priv(he->map->dso, sym);
+ struct sym_ext *sym_ext = priv->ext;
+ struct sym_hist *h = priv->hist;
offset = line_ip - start;
if (offset < len)
- hits = sym->hist[offset];
+ hits = h->ip[offset];
if (offset < len && sym_ext) {
path = sym_ext[offset].path;
percent = sym_ext[offset].percent;
- } else if (sym->hist_sum)
- percent = 100.0 * hits / sym->hist_sum;
+ } else if (h->sum)
+ percent = 100.0 * hits / h->sum;
color = get_percent_color(percent);
@@ -377,9 +420,10 @@ static void insert_source_line(struct sym_ext *sym_ext)
rb_insert_color(&sym_ext->node, &root_sym_ext);
}
-static void free_source_line(struct symbol *sym, int len)
+static void free_source_line(struct hist_entry *he, int len)
{
- struct sym_ext *sym_ext = sym->priv;
+ struct sym_priv *priv = dso__sym_priv(he->map->dso, he->sym);
+ struct sym_ext *sym_ext = priv->ext;
int i;
if (!sym_ext)
@@ -389,7 +433,7 @@ static void free_source_line(struct symbol *sym, int len)
free(sym_ext[i].path);
free(sym_ext);
- sym->priv = NULL;
+ priv->ext = NULL;
root_sym_ext = RB_ROOT;
}
@@ -402,15 +446,16 @@ get_source_line(struct hist_entry *he, int len, const char *filename)
int i;
char cmd[PATH_MAX * 2];
struct sym_ext *sym_ext;
+ struct sym_priv *priv = dso__sym_priv(he->map->dso, sym);
+ struct sym_hist *h = priv->hist;
- if (!sym->hist_sum)
+ if (!h->sum)
return;
- sym->priv = calloc(len, sizeof(struct sym_ext));
- if (!sym->priv)
+ sym_ext = priv->ext = calloc(len, sizeof(struct sym_ext));
+ if (!priv->ext)
return;
- sym_ext = sym->priv;
start = he->map->unmap_ip(he->map, sym->start);
for (i = 0; i < len; i++) {
@@ -419,7 +464,7 @@ get_source_line(struct hist_entry *he, int len, const char *filename)
u64 offset;
FILE *fp;
- sym_ext[i].percent = 100.0 * sym->hist[i] / sym->hist_sum;
+ sym_ext[i].percent = 100.0 * h->ip[i] / h->sum;
if (sym_ext[i].percent <= 0.5)
continue;
@@ -530,7 +575,7 @@ static void annotate_sym(struct hist_entry *he)
pclose(file);
if (print_line)
- free_source_line(sym, len);
+ free_source_line(he, len);
}
static void find_annotations(void)
@@ -540,19 +585,23 @@ static void find_annotations(void)
for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
+ struct sym_priv *priv;
- if (he->sym && he->sym->hist) {
- annotate_sym(he);
- count++;
- /*
- * Since we have a hist_entry per IP for the same
- * symbol, free he->sym->hist to signal we already
- * processed this symbol.
- */
- free(he->sym->hist);
- he->sym->hist = NULL;
+ if (he->sym == NULL)
+ continue;
- }
+ priv = dso__sym_priv(he->map->dso, he->sym);
+ if (priv->hist == NULL)
+ continue;
+
+ annotate_sym(he);
+ count++;
+ /*
+ * Since we have a hist_entry per IP for the same symbol, free
+ * he->sym->hist to signal we already processed this symbol.
+ */
+ free(priv->hist);
+ priv->hist = NULL;
}
if (!count)
@@ -593,7 +642,7 @@ static int __cmd_annotate(void)
exit(0);
}
- if (load_kernel() < 0) {
+ if (load_kernel(sizeof(struct sym_priv), symbol_filter) < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
}
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index a4f8cc20915..bee207ce589 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -680,7 +680,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, cwd, cwdlen);
+ struct map *map = map__new(&event->mmap, cwd, cwdlen, 0, NULL, verbose);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index 242b0555ab9..18accb8fee4 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -130,7 +130,7 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
if (curr_handler->sample_type_check(sample_type) < 0)
exit(-1);
- if (load_kernel() < 0) {
+ if (load_kernel(0, NULL) < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 6b5be56a827..db59c8bbe49 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -101,7 +101,13 @@ static inline u64 identity__map_ip(struct map *map __used, u64 ip)
return ip;
}
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
+struct symbol;
+
+typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
+
+struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
+ unsigned int sym_priv_size, symbol_filter_t filter,
+ int v);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 4e203d144f9..55079c0200e 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -3,6 +3,7 @@
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
+#include "debug.h"
static inline int is_anon_memory(const char *filename)
{
@@ -19,7 +20,9 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
return n;
}
- struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
+struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
+ unsigned int sym_priv_size, symbol_filter_t filter,
+ int v)
{
struct map *self = malloc(sizeof(*self));
@@ -27,6 +30,7 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
const char *filename = event->filename;
char newfilename[PATH_MAX];
int anon;
+ bool new_dso;
if (cwd) {
int n = strcommon(filename, cwd, cwdlen);
@@ -49,10 +53,23 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
self->end = event->start + event->len;
self->pgoff = event->pgoff;
- self->dso = dsos__findnew(filename);
+ self->dso = dsos__findnew(filename, sym_priv_size, &new_dso);
if (self->dso == NULL)
goto out_delete;
+ if (new_dso) {
+ int nr = dso__load(self->dso, self, filter, v);
+
+ if (nr < 0)
+ eprintf("Failed to open %s, continuing "
+ "without symbols\n",
+ self->dso->long_name);
+ else if (nr == 0)
+ eprintf("No symbols found in %s, maybe "
+ "install a debug package?\n",
+ self->dso->long_name);
+ }
+
if (self->dso == vdso || anon)
self->map_ip = self->unmap_ip = identity__map_ip;
else {
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 3350119f690..0a4898480d6 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -11,8 +11,6 @@
#include <elf.h>
#include <sys/utsname.h>
-const char *sym_hist_filter;
-
enum dso_origin {
DSO__ORIG_KERNEL = 0,
DSO__ORIG_JAVA_JIT,
@@ -86,22 +84,16 @@ static struct symbol *symbol__new(u64 start, u64 len, const char *name,
if (!self)
return NULL;
- if (v > 2)
- printf("new symbol: %016Lx [%08lx]: %s, hist: %p\n",
- start, (unsigned long)len, name, self->hist);
-
- self->hist = NULL;
- self->hist_sum = 0;
-
- if (sym_hist_filter && !strcmp(name, sym_hist_filter))
- self->hist = calloc(sizeof(u64), len);
-
if (priv_size) {
memset(self, 0, priv_size);
self = ((void *)self) + priv_size;
}
self->start = start;
self->end = len ? start + len - 1 : start;
+
+ if (v > 2)
+ printf("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end);
+
memcpy(self->name, name, namelen);
return self;
@@ -919,7 +911,8 @@ char dso__symtab_origin(const struct dso *self)
return origin[self->origin];
}
-int dso__load(struct dso *self, struct map *map, symbol_filter_t filter, int v)
+int dso__load(struct dso *self, struct map *map,
+ symbol_filter_t filter, int v)
{
int size = PATH_MAX;
char *name = malloc(size), *build_id = NULL;
@@ -1335,33 +1328,21 @@ static struct dso *dsos__find(const char *name)
return NULL;
}
-struct dso *dsos__findnew(const char *name)
+struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
+ bool *is_new)
{
struct dso *dso = dsos__find(name);
- int nr;
-
- if (dso)
- return dso;
-
- dso = dso__new(name, 0);
- if (!dso)
- goto out_delete_dso;
- nr = dso__load(dso, NULL, NULL, verbose);
- if (nr < 0) {
- eprintf("Failed to open: %s\n", name);
- goto out_delete_dso;
- }
- if (!nr)
- eprintf("No symbols found in: %s, maybe install a debug package?\n", name);
-
- dsos__add(dso);
+ if (!dso) {
+ dso = dso__new(name, sym_priv_size);
+ if (dso) {
+ dsos__add(dso);
+ *is_new = true;
+ }
+ } else
+ *is_new = false;
return dso;
-
-out_delete_dso:
- dso__delete(dso);
- return NULL;
}
void dsos__fprintf(FILE *fp)
@@ -1372,9 +1353,10 @@ void dsos__fprintf(FILE *fp)
dso__fprintf(pos, fp);
}
-int load_kernel(void)
+int load_kernel(unsigned int sym_priv_size, symbol_filter_t filter)
{
- if (dsos__load_kernel(vmlinux_name, 0, NULL, verbose, modules) <= 0)
+ if (dsos__load_kernel(vmlinux_name, sym_priv_size,
+ filter, verbose, modules) <= 0)
return -1;
vdso = dso__new("[vdso]", 0);
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 2e4522edeb0..c2a777de9b7 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -2,6 +2,7 @@
#define __PERF_SYMBOL 1
#include <linux/types.h>
+#include <stdbool.h>
#include "types.h"
#include <linux/list.h>
#include <linux/rbtree.h>
@@ -35,9 +36,6 @@ struct symbol {
struct rb_node rb_node;
u64 start;
u64 end;
- u64 hist_sum;
- u64 *hist;
- void *priv;
char name[0];
};
@@ -54,10 +52,6 @@ struct dso {
char name[0];
};
-extern const char *sym_hist_filter;
-
-typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
-
struct dso *dso__new(const char *name, unsigned int sym_priv_size);
void dso__delete(struct dso *self);
@@ -70,15 +64,16 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
symbol_filter_t filter, int verbose, int modules);
-int dso__load(struct dso *self, struct map *map, symbol_filter_t filter,
- int verbose);
-struct dso *dsos__findnew(const char *name);
+struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
+ bool *is_new);
+int dso__load(struct dso *self, struct map *map,
+ symbol_filter_t filter, int v);
void dsos__fprintf(FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
char dso__symtab_origin(const struct dso *self);
-int load_kernel(void);
+int load_kernel(unsigned int sym_priv_size, symbol_filter_t filter);
void symbol__init(void);
--
cgit v1.2.3-70-g09d2
From 6beba7adbe092e63dfe8d09fbd1e3ec140474a13 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 21 Oct 2009 17:34:06 -0200
Subject: perf tools: Unify debug messages mechanisms
We were using eprintf in some places, that looks at a global
'verbose' level, and at other places passing a 'v' parameter to
specify the verbosity level, unify it by introducing
pr_{err,warning,debug,etc}, just like in the kernel.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256153646-10097-1-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 3 +-
tools/perf/builtin-record.c | 2 +-
tools/perf/builtin-report.c | 9 ++-
tools/perf/builtin-sched.c | 4 +-
tools/perf/builtin-timechart.c | 13 ++--
tools/perf/builtin-top.c | 2 +-
tools/perf/builtin-trace.c | 4 +-
tools/perf/util/callchain.c | 2 +-
tools/perf/util/debug.c | 4 +-
tools/perf/util/debug.h | 3 +-
tools/perf/util/event.h | 3 +-
tools/perf/util/header.c | 2 +-
tools/perf/util/include/linux/kernel.h | 17 +++++
tools/perf/util/map.c | 17 ++---
tools/perf/util/symbol.c | 134 +++++++++++++++------------------
tools/perf/util/symbol.h | 5 +-
tools/perf/util/thread.c | 6 +-
17 files changed, 114 insertions(+), 116 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 99bac6aa72c..6d63c2eea2c 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -203,8 +203,7 @@ static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
struct map *map = map__new(&event->mmap, NULL, 0,
- sizeof(struct sym_priv), symbol_filter,
- verbose);
+ sizeof(struct sym_priv), symbol_filter);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index f0467ff0d8a..ac5ddfff445 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -630,7 +630,7 @@ static int __cmd_record(int argc, const char **argv)
param.sched_priority = realtime_prio;
if (sched_setscheduler(0, SCHED_FIFO, ¶m)) {
- printf("Could not set realtime priority.\n");
+ pr_err("Could not set realtime priority.\n");
exit(-1);
}
}
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 72d58421223..b3d814b5455 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -689,7 +689,8 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
dump_printf("... chain: nr:%Lu\n", chain->nr);
if (validate_chain(chain, event) < 0) {
- eprintf("call-chain problem with event, skipping it.\n");
+ pr_debug("call-chain problem with event, "
+ "skipping it.\n");
return 0;
}
@@ -700,7 +701,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
}
if (thread == NULL) {
- eprintf("problem processing %d event, skipping it.\n",
+ pr_debug("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
@@ -738,7 +739,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (hist_entry__add(thread, map, sym, ip,
chain, level, period)) {
- eprintf("problem incrementing symbol count, skipping event\n");
+ pr_debug("problem incrementing symbol count, skipping event\n");
return -1;
}
@@ -750,7 +751,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, cwd, cwdlen, 0, NULL, verbose);
+ struct map *map = map__new(&event->mmap, cwd, cwdlen, 0, NULL);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 807ca66e7a8..9a48d9626be 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1666,8 +1666,8 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
(long long)period);
if (thread == NULL) {
- eprintf("problem processing %d event, skipping it.\n",
- event->header.type);
+ pr_debug("problem processing %d event, skipping it.\n",
+ event->header.type);
return -1;
}
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 34fad57087f..0a2f22261c3 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -1162,12 +1162,10 @@ more:
size = event->header.size;
if (!size || process_event(event) < 0) {
-
- printf("%p [%p]: skipping unknown header type: %d\n",
- (void *)(offset + head),
- (void *)(long)(event->header.size),
- event->header.type);
-
+ pr_warning("%p [%p]: skipping unknown header type: %d\n",
+ (void *)(offset + head),
+ (void *)(long)(event->header.size),
+ event->header.type);
/*
* assume we lost track of the stream, check alignment, and
* increment a single u64 in the hope to catch on again 'soon'.
@@ -1200,7 +1198,8 @@ done:
write_svg_file(output_name);
- printf("Written %2.1f seconds of trace to %s.\n", (last_time - first_time) / 1000000000.0, output_name);
+ pr_info("Written %2.1f seconds of trace to %s.\n",
+ (last_time - first_time) / 1000000000.0, output_name);
return rc;
}
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index fa20345a0ab..4a9fe228be2 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -809,7 +809,7 @@ static int symbol_filter(struct map *map, struct symbol *sym)
static int parse_symbols(void)
{
if (dsos__load_kernel(vmlinux_name, sizeof(struct sym_entry),
- symbol_filter, verbose, 1) <= 0)
+ symbol_filter, 1) <= 0)
return -1;
if (dump_symtab)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 4c129ff0bb1..e566bbe3f22 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -81,8 +81,8 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
(long long)period);
if (thread == NULL) {
- eprintf("problem processing %d event, skipping it.\n",
- event->header.type);
+ pr_debug("problem processing %d event, skipping it.\n",
+ event->header.type);
return -1;
}
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 3b8380f1b47..b3b71258272 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -206,7 +206,7 @@ fill_node(struct callchain_node *node, struct ip_callchain *chain,
}
node->val_nr = chain->nr - start;
if (!node->val_nr)
- printf("Warning: empty node in callchain tree\n");
+ pr_warning("Warning: empty node in callchain tree\n");
}
static void
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index e8ca98fe0bd..28d520d5a1f 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -13,12 +13,12 @@
int verbose = 0;
int dump_trace = 0;
-int eprintf(const char *fmt, ...)
+int eprintf(int level, const char *fmt, ...)
{
va_list args;
int ret = 0;
- if (verbose) {
+ if (verbose >= level) {
va_start(args, fmt);
ret = vfprintf(stderr, fmt, args);
va_end(args);
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index 02d1fa1c246..e8b18a1f87a 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -5,7 +5,8 @@
extern int verbose;
extern int dump_trace;
-int eprintf(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
+int eprintf(int level,
+ const char *fmt, ...) __attribute__((format(printf, 2, 3)));
int dump_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
void trace_event(event_t *event);
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index db59c8bbe49..d972b4b0d38 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -106,8 +106,7 @@ struct symbol;
typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
- unsigned int sym_priv_size, symbol_filter_t filter,
- int v);
+ unsigned int sym_priv_size, symbol_filter_t filter);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 622c60e4525..7d26659b806 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -93,7 +93,7 @@ static struct perf_trace_event_type *events;
void perf_header__push_event(u64 id, const char *name)
{
if (strlen(name) > MAX_EVENT_NAME)
- printf("Event %s will be truncated\n", name);
+ pr_warning("Event %s will be truncated\n", name);
if (!events) {
events = malloc(sizeof(struct perf_trace_event_type));
diff --git a/tools/perf/util/include/linux/kernel.h b/tools/perf/util/include/linux/kernel.h
index 4b9204d9b26..21c0274c02f 100644
--- a/tools/perf/util/include/linux/kernel.h
+++ b/tools/perf/util/include/linux/kernel.h
@@ -85,4 +85,21 @@ simple_strtoul(const char *nptr, char **endptr, int base)
return strtoul(nptr, endptr, base);
}
+#ifndef pr_fmt
+#define pr_fmt(fmt) fmt
+#endif
+
+#define pr_err(fmt, ...) \
+ do { fprintf(stderr, pr_fmt(fmt), ##__VA_ARGS__); } while (0)
+#define pr_warning(fmt, ...) \
+ do { fprintf(stderr, pr_fmt(fmt), ##__VA_ARGS__); } while (0)
+#define pr_info(fmt, ...) \
+ do { fprintf(stderr, pr_fmt(fmt), ##__VA_ARGS__); } while (0)
+#define pr_debug(fmt, ...) \
+ eprintf(1, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_debugN(n, fmt, ...) \
+ eprintf(n, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_debug2(fmt, ...) pr_debugN(2, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_debug3(fmt, ...) pr_debugN(3, pr_fmt(fmt), ##__VA_ARGS__)
+
#endif
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 55079c0200e..c1c55682534 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -21,8 +21,7 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
}
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
- unsigned int sym_priv_size, symbol_filter_t filter,
- int v)
+ unsigned int sym_priv_size, symbol_filter_t filter)
{
struct map *self = malloc(sizeof(*self));
@@ -58,16 +57,16 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
goto out_delete;
if (new_dso) {
- int nr = dso__load(self->dso, self, filter, v);
+ int nr = dso__load(self->dso, self, filter);
if (nr < 0)
- eprintf("Failed to open %s, continuing "
- "without symbols\n",
- self->dso->long_name);
+ pr_warning("Failed to open %s, continuing "
+ "without symbols\n",
+ self->dso->long_name);
else if (nr == 0)
- eprintf("No symbols found in %s, maybe "
- "install a debug package?\n",
- self->dso->long_name);
+ pr_warning("No symbols found in %s, maybe "
+ "install a debug package?\n",
+ self->dso->long_name);
}
if (self->dso == vdso || anon)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0a4898480d6..8f0208ce237 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -76,7 +76,7 @@ static void kernel_maps__fixup_end(void)
}
static struct symbol *symbol__new(u64 start, u64 len, const char *name,
- unsigned int priv_size, int v)
+ unsigned int priv_size)
{
size_t namelen = strlen(name) + 1;
struct symbol *self = calloc(1, priv_size + sizeof(*self) + namelen);
@@ -91,8 +91,7 @@ static struct symbol *symbol__new(u64 start, u64 len, const char *name,
self->start = start;
self->end = len ? start + len - 1 : start;
- if (v > 2)
- printf("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end);
+ pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end);
memcpy(self->name, name, namelen);
@@ -209,7 +208,7 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
* so that we can in the next step set the symbol ->end address and then
* call kernel_maps__split_kallsyms.
*/
-static int kernel_maps__load_all_kallsyms(int v)
+static int kernel_maps__load_all_kallsyms(void)
{
char *line = NULL;
size_t n;
@@ -252,7 +251,7 @@ static int kernel_maps__load_all_kallsyms(int v)
* Will fix up the end later, when we have all symbols sorted.
*/
sym = symbol__new(start, 0, symbol_name,
- kernel_map->dso->sym_priv_size, v);
+ kernel_map->dso->sym_priv_size);
if (sym == NULL)
goto out_delete_line;
@@ -300,8 +299,8 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
if (strcmp(map->dso->name, module)) {
map = kernel_maps__find_by_dso_name(module);
if (!map) {
- fputs("/proc/{kallsyms,modules} "
- "inconsistency!\n", stderr);
+ pr_err("/proc/{kallsyms,modules} "
+ "inconsistency!\n");
return -1;
}
}
@@ -351,10 +350,9 @@ delete_symbol:
}
-static int kernel_maps__load_kallsyms(symbol_filter_t filter,
- int use_modules, int v)
+static int kernel_maps__load_kallsyms(symbol_filter_t filter, int use_modules)
{
- if (kernel_maps__load_all_kallsyms(v))
+ if (kernel_maps__load_all_kallsyms())
return -1;
dso__fixup_sym_end(kernel_map->dso);
@@ -362,9 +360,9 @@ static int kernel_maps__load_kallsyms(symbol_filter_t filter,
return kernel_maps__split_kallsyms(filter, use_modules);
}
-static size_t kernel_maps__fprintf(FILE *fp, int v)
+static size_t kernel_maps__fprintf(FILE *fp)
{
- size_t printed = fprintf(stderr, "Kernel maps:\n");
+ size_t printed = fprintf(fp, "Kernel maps:\n");
struct rb_node *nd;
for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
@@ -372,17 +370,17 @@ static size_t kernel_maps__fprintf(FILE *fp, int v)
printed += fprintf(fp, "Map:");
printed += map__fprintf(pos, fp);
- if (v > 1) {
+ if (verbose > 1) {
printed += dso__fprintf(pos->dso, fp);
printed += fprintf(fp, "--\n");
}
}
- return printed + fprintf(stderr, "END kernel maps\n");
+ return printed + fprintf(fp, "END kernel maps\n");
}
static int dso__load_perf_map(struct dso *self, struct map *map,
- symbol_filter_t filter, int v)
+ symbol_filter_t filter)
{
char *line = NULL;
size_t n;
@@ -420,7 +418,7 @@ static int dso__load_perf_map(struct dso *self, struct map *map,
continue;
sym = symbol__new(start, size, line + len,
- self->sym_priv_size, v);
+ self->sym_priv_size);
if (sym == NULL)
goto out_delete_line;
@@ -534,7 +532,7 @@ static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
* And always look at the original dso, not at debuginfo packages, that
* have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS).
*/
-static int dso__synthesize_plt_symbols(struct dso *self, int v)
+static int dso__synthesize_plt_symbols(struct dso *self)
{
uint32_t nr_rel_entries, idx;
GElf_Sym sym;
@@ -618,7 +616,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, int v)
"%s@plt", elf_sym__name(&sym, symstrs));
f = symbol__new(plt_offset, shdr_plt.sh_entsize,
- sympltname, self->sym_priv_size, v);
+ sympltname, self->sym_priv_size);
if (!f)
goto out_elf_end;
@@ -636,7 +634,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, int v)
"%s@plt", elf_sym__name(&sym, symstrs));
f = symbol__new(plt_offset, shdr_plt.sh_entsize,
- sympltname, self->sym_priv_size, v);
+ sympltname, self->sym_priv_size);
if (!f)
goto out_elf_end;
@@ -654,14 +652,14 @@ out_close:
if (err == 0)
return nr;
out:
- fprintf(stderr, "%s: problems reading %s PLT info.\n",
- __func__, self->long_name);
+ pr_warning("%s: problems reading %s PLT info.\n",
+ __func__, self->long_name);
return 0;
}
static int dso__load_sym(struct dso *self, struct map *map, const char *name,
int fd, symbol_filter_t filter, int kernel,
- int kmodule, int v)
+ int kmodule)
{
struct map *curr_map = map;
struct dso *curr_dso = self;
@@ -680,15 +678,12 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
- if (v)
- fprintf(stderr, "%s: cannot read %s ELF file.\n",
- __func__, name);
+ pr_err("%s: cannot read %s ELF file.\n", __func__, name);
goto out_close;
}
if (gelf_getehdr(elf, &ehdr) == NULL) {
- if (v)
- fprintf(stderr, "%s: cannot get elf header.\n", __func__);
+ pr_err("%s: cannot get elf header.\n", __func__);
goto out_elf_end;
}
@@ -794,10 +789,9 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
}
if (curr_dso->adjust_symbols) {
- if (v > 2)
- printf("adjusting symbol: st_value: %Lx sh_addr: %Lx sh_offset: %Lx\n",
- (u64)sym.st_value, (u64)shdr.sh_addr, (u64)shdr.sh_offset);
-
+ pr_debug2("adjusting symbol: st_value: %Lx sh_addr: "
+ "%Lx sh_offset: %Lx\n", (u64)sym.st_value,
+ (u64)shdr.sh_addr, (u64)shdr.sh_offset);
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
}
/*
@@ -810,7 +804,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
elf_name = demangled;
new_symbol:
f = symbol__new(sym.st_value, sym.st_size, elf_name,
- curr_dso->sym_priv_size, v);
+ curr_dso->sym_priv_size);
free(demangled);
if (!f)
goto out_elf_end;
@@ -837,7 +831,7 @@ out_close:
#define BUILD_ID_SIZE 128
-static char *dso__read_build_id(struct dso *self, int v)
+static char *dso__read_build_id(struct dso *self)
{
int i;
GElf_Ehdr ehdr;
@@ -854,15 +848,13 @@ static char *dso__read_build_id(struct dso *self, int v)
elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
- if (v)
- fprintf(stderr, "%s: cannot read %s ELF file.\n",
- __func__, self->long_name);
+ pr_err("%s: cannot read %s ELF file.\n", __func__,
+ self->long_name);
goto out_close;
}
if (gelf_getehdr(elf, &ehdr) == NULL) {
- if (v)
- fprintf(stderr, "%s: cannot get elf header.\n", __func__);
+ pr_err("%s: cannot get elf header.\n", __func__);
goto out_elf_end;
}
@@ -884,8 +876,7 @@ static char *dso__read_build_id(struct dso *self, int v)
++raw;
bid += 2;
}
- if (v >= 2)
- printf("%s(%s): %s\n", __func__, self->long_name, build_id);
+ pr_debug2("%s(%s): %s\n", __func__, self->long_name, build_id);
out_elf_end:
elf_end(elf);
out_close:
@@ -911,8 +902,7 @@ char dso__symtab_origin(const struct dso *self)
return origin[self->origin];
}
-int dso__load(struct dso *self, struct map *map,
- symbol_filter_t filter, int v)
+int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
{
int size = PATH_MAX;
char *name = malloc(size), *build_id = NULL;
@@ -925,7 +915,7 @@ int dso__load(struct dso *self, struct map *map,
self->adjust_symbols = 0;
if (strncmp(self->name, "/tmp/perf-", 10) == 0) {
- ret = dso__load_perf_map(self, map, filter, v);
+ ret = dso__load_perf_map(self, map, filter);
self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT :
DSO__ORIG_NOT_FOUND;
return ret;
@@ -946,7 +936,7 @@ more:
self->long_name);
break;
case DSO__ORIG_BUILDID:
- build_id = dso__read_build_id(self, v);
+ build_id = dso__read_build_id(self);
if (build_id != NULL) {
snprintf(name, size,
"/usr/lib/debug/.build-id/%.2s/%s.debug",
@@ -967,7 +957,7 @@ more:
fd = open(name, O_RDONLY);
} while (fd < 0);
- ret = dso__load_sym(self, map, name, fd, filter, 0, 0, v);
+ ret = dso__load_sym(self, map, name, fd, filter, 0, 0);
close(fd);
/*
@@ -977,7 +967,7 @@ more:
goto more;
if (ret > 0) {
- int nr_plt = dso__synthesize_plt_symbols(self, v);
+ int nr_plt = dso__synthesize_plt_symbols(self);
if (nr_plt > 0)
ret += nr_plt;
}
@@ -1025,34 +1015,29 @@ struct map *kernel_maps__find_by_dso_name(const char *name)
}
static int dso__load_module_sym(struct dso *self, struct map *map,
- symbol_filter_t filter, int v)
+ symbol_filter_t filter)
{
int err = 0, fd = open(self->long_name, O_RDONLY);
if (fd < 0) {
- if (v)
- fprintf(stderr, "%s: cannot open %s\n",
- __func__, self->long_name);
+ pr_err("%s: cannot open %s\n", __func__, self->long_name);
return err;
}
- err = dso__load_sym(self, map, self->long_name, fd, filter, 0, 1, v);
+ err = dso__load_sym(self, map, self->long_name, fd, filter, 0, 1);
close(fd);
return err;
}
-static int dsos__load_modules_sym_dir(char *dirname,
- symbol_filter_t filter, int v)
+static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
{
struct dirent *dent;
int nr_symbols = 0, err;
DIR *dir = opendir(dirname);
if (!dir) {
- if (v)
- fprintf(stderr, "%s: cannot open %s dir\n", __func__,
- dirname);
+ pr_err("%s: cannot open %s dir\n", __func__, dirname);
return -1;
}
@@ -1066,7 +1051,7 @@ static int dsos__load_modules_sym_dir(char *dirname,
snprintf(path, sizeof(path), "%s/%s",
dirname, dent->d_name);
- err = dsos__load_modules_sym_dir(path, filter, v);
+ err = dsos__load_modules_sym_dir(path, filter);
if (err < 0)
goto failure;
} else {
@@ -1092,7 +1077,7 @@ static int dsos__load_modules_sym_dir(char *dirname,
if (map->dso->long_name == NULL)
goto failure;
- err = dso__load_module_sym(map->dso, map, filter, v);
+ err = dso__load_module_sym(map->dso, map, filter);
if (err < 0)
goto failure;
last = rb_last(&map->dso->syms);
@@ -1119,7 +1104,7 @@ failure:
return -1;
}
-static int dsos__load_modules_sym(symbol_filter_t filter, int v)
+static int dsos__load_modules_sym(symbol_filter_t filter)
{
struct utsname uts;
char modules_path[PATH_MAX];
@@ -1130,7 +1115,7 @@ static int dsos__load_modules_sym(symbol_filter_t filter, int v)
snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel",
uts.release);
- return dsos__load_modules_sym_dir(modules_path, filter, v);
+ return dsos__load_modules_sym_dir(modules_path, filter);
}
/*
@@ -1225,15 +1210,14 @@ out_failure:
}
static int dso__load_vmlinux(struct dso *self, struct map *map,
- const char *vmlinux,
- symbol_filter_t filter, int v)
+ const char *vmlinux, symbol_filter_t filter)
{
int err, fd = open(vmlinux, O_RDONLY);
if (fd < 0)
return -1;
- err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0, v);
+ err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0);
close(fd);
@@ -1241,7 +1225,7 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
}
int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
- symbol_filter_t filter, int v, int use_modules)
+ symbol_filter_t filter, int use_modules)
{
int err = -1;
struct dso *dso = dso__new(vmlinux, sym_priv_size);
@@ -1257,26 +1241,26 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
if (use_modules && dsos__load_modules(sym_priv_size) < 0) {
- fprintf(stderr, "Failed to load list of modules in use! "
- "Continuing...\n");
+ pr_warning("Failed to load list of modules in use! "
+ "Continuing...\n");
use_modules = 0;
}
if (vmlinux) {
- err = dso__load_vmlinux(dso, kernel_map, vmlinux, filter, v);
+ err = dso__load_vmlinux(dso, kernel_map, vmlinux, filter);
if (err > 0 && use_modules) {
- int syms = dsos__load_modules_sym(filter, v);
+ int syms = dsos__load_modules_sym(filter);
if (syms < 0)
- fprintf(stderr, "Failed to read module symbols!"
- " Continuing...\n");
+ pr_warning("Failed to read module symbols!"
+ " Continuing...\n");
else
err += syms;
}
}
if (err <= 0)
- err = kernel_maps__load_kallsyms(filter, use_modules, v);
+ err = kernel_maps__load_kallsyms(filter, use_modules);
if (err > 0) {
struct rb_node *node = rb_first(&dso->syms);
@@ -1296,8 +1280,8 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
kernel_maps__fixup_end();
dsos__add(dso);
- if (v > 0)
- kernel_maps__fprintf(stderr, v);
+ if (verbose)
+ kernel_maps__fprintf(stderr);
}
return err;
@@ -1355,8 +1339,8 @@ void dsos__fprintf(FILE *fp)
int load_kernel(unsigned int sym_priv_size, symbol_filter_t filter)
{
- if (dsos__load_kernel(vmlinux_name, sym_priv_size,
- filter, verbose, modules) <= 0)
+ if (dsos__load_kernel(vmlinux_name, sym_priv_size, filter,
+ modules) <= 0)
return -1;
vdso = dso__new("[vdso]", 0);
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index c2a777de9b7..77b7b3e4241 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -63,11 +63,10 @@ static inline void *dso__sym_priv(struct dso *self, struct symbol *sym)
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
- symbol_filter_t filter, int verbose, int modules);
+ symbol_filter_t filter, int modules);
struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
bool *is_new);
-int dso__load(struct dso *self, struct map *map,
- symbol_filter_t filter, int v);
+int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 8cb47f1d8a7..0f6d78c9863 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -127,9 +127,9 @@ static void thread__remove_overlappings(struct thread *self, struct map *map)
continue;
if (verbose >= 2) {
- printf("overlapping maps:\n");
- map__fprintf(map, stdout);
- map__fprintf(pos, stdout);
+ fputs("overlapping maps:\n", stderr);
+ map__fprintf(map, stderr);
+ map__fprintf(pos, stderr);
}
rb_erase(&pos->rb_node, &self->maps);
--
cgit v1.2.3-70-g09d2
From 66bd8424cc05e800db384053bf7ab967e4658468 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 28 Oct 2009 21:51:21 -0200
Subject: perf tools: Delay loading symtabs till we hit a map with it
So that we can have a quicker start on perf top and even
speedups in the other tools, as we can have maps with no hits,
so no need to load its symtabs.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256773881-4191-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 4 ++--
tools/perf/builtin-report.c | 4 ++--
tools/perf/builtin-top.c | 5 ++---
tools/perf/util/event.h | 3 ++-
tools/perf/util/map.c | 38 ++++++++++++++++++++++----------------
tools/perf/util/symbol.c | 16 +++++++++-------
tools/perf/util/symbol.h | 4 ++--
7 files changed, 41 insertions(+), 33 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 6d63c2eea2c..8688bfee42a 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -165,7 +165,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (map != NULL) {
got_map:
ip = map->map_ip(map, ip);
- sym = map->dso->find_symbol(map->dso, ip);
+ sym = map__find_symbol(map, ip, symbol_filter);
} else {
/*
* If this is outside of all known maps,
@@ -203,7 +203,7 @@ static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
struct map *map = map__new(&event->mmap, NULL, 0,
- sizeof(struct sym_priv), symbol_filter);
+ sizeof(struct sym_priv));
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index b3d814b5455..f1bcd35bd22 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -455,7 +455,7 @@ got_map:
dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
*ipp = ip;
- return map ? map->dso->find_symbol(map->dso, ip) : NULL;
+ return map ? map__find_symbol(map, ip, NULL) : NULL;
}
static int call__match(struct symbol *sym)
@@ -751,7 +751,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, cwd, cwdlen, 0, NULL);
+ struct map *map = map__new(&event->mmap, cwd, cwdlen, 0);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a02fc414601..ee87640b335 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -834,7 +834,7 @@ static void event__process_sample(const event_t *self, int counter)
map = thread__find_map(thread, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
- sym = map->dso->find_symbol(map->dso, ip);
+ sym = map__find_symbol(map, ip, symbol_filter);
if (sym == NULL)
return;
userspace_samples++;
@@ -879,8 +879,7 @@ static void event__process_mmap(event_t *self)
if (thread != NULL) {
struct map *map = map__new(&self->mmap, NULL, 0,
- sizeof(struct sym_entry),
- symbol_filter);
+ sizeof(struct sym_entry));
if (map != NULL)
thread__insert_map(thread, map);
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 2ae1177be40..3064a05f0f5 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -106,10 +106,11 @@ struct symbol;
typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
- unsigned int sym_priv_size, symbol_filter_t filter);
+ unsigned int sym_priv_size);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
+struct symbol *map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter);
int event__synthesize_thread(pid_t pid, int (*process)(event_t *event));
void event__synthesize_threads(int (*process)(event_t *event));
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index c1c55682534..d302e513e06 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -21,7 +21,7 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
}
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
- unsigned int sym_priv_size, symbol_filter_t filter)
+ unsigned int sym_priv_size)
{
struct map *self = malloc(sizeof(*self));
@@ -29,7 +29,6 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
const char *filename = event->filename;
char newfilename[PATH_MAX];
int anon;
- bool new_dso;
if (cwd) {
int n = strcommon(filename, cwd, cwdlen);
@@ -52,23 +51,10 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
self->end = event->start + event->len;
self->pgoff = event->pgoff;
- self->dso = dsos__findnew(filename, sym_priv_size, &new_dso);
+ self->dso = dsos__findnew(filename, sym_priv_size);
if (self->dso == NULL)
goto out_delete;
- if (new_dso) {
- int nr = dso__load(self->dso, self, filter);
-
- if (nr < 0)
- pr_warning("Failed to open %s, continuing "
- "without symbols\n",
- self->dso->long_name);
- else if (nr == 0)
- pr_warning("No symbols found in %s, maybe "
- "install a debug package?\n",
- self->dso->long_name);
- }
-
if (self->dso == vdso || anon)
self->map_ip = self->unmap_ip = identity__map_ip;
else {
@@ -82,6 +68,26 @@ out_delete:
return NULL;
}
+struct symbol *
+map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter)
+{
+ if (!self->dso->loaded) {
+ int nr = dso__load(self->dso, self, filter);
+
+ if (nr < 0) {
+ pr_warning("Failed to open %s, continuing without symbols\n",
+ self->dso->long_name);
+ return NULL;
+ } else if (nr == 0) {
+ pr_warning("No symbols found in %s, maybe install a debug package?\n",
+ self->dso->long_name);
+ return NULL;
+ }
+ }
+
+ return self->dso->find_symbol(self->dso, ip);
+}
+
struct map *map__clone(struct map *self)
{
struct map *map = malloc(sizeof(*self));
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 8f0208ce237..0273d83f728 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -909,6 +909,8 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
int ret = -1;
int fd;
+ self->loaded = true;
+
if (!name)
return -1;
@@ -1019,6 +1021,8 @@ static int dso__load_module_sym(struct dso *self, struct map *map,
{
int err = 0, fd = open(self->long_name, O_RDONLY);
+ self->loaded = true;
+
if (fd < 0) {
pr_err("%s: cannot open %s\n", __func__, self->long_name);
return err;
@@ -1214,6 +1218,8 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
{
int err, fd = open(vmlinux, O_RDONLY);
+ self->loaded = true;
+
if (fd < 0)
return -1;
@@ -1312,19 +1318,15 @@ static struct dso *dsos__find(const char *name)
return NULL;
}
-struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
- bool *is_new)
+struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size)
{
struct dso *dso = dsos__find(name);
if (!dso) {
dso = dso__new(name, sym_priv_size);
- if (dso) {
+ if (dso != NULL)
dsos__add(dso);
- *is_new = true;
- }
- } else
- *is_new = false;
+ }
return dso;
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 77b7b3e4241..432edbca780 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -46,6 +46,7 @@ struct dso {
unsigned int sym_priv_size;
unsigned char adjust_symbols;
unsigned char slen_calculated;
+ bool loaded;
unsigned char origin;
const char *short_name;
char *long_name;
@@ -64,8 +65,7 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
symbol_filter_t filter, int modules);
-struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size,
- bool *is_new);
+struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
--
cgit v1.2.3-70-g09d2
From afb7b4f08e274cecd8337f9444affa288a9cd4c1 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 30 Oct 2009 16:28:23 -0200
Subject: perf tools: Factor out the map initialization
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256927305-4628-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/event.h | 2 ++
tools/perf/util/map.c | 28 ++++++++++++++++++----------
tools/perf/util/symbol.c | 12 +++---------
3 files changed, 23 insertions(+), 19 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 3064a05f0f5..4a158a01bb9 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -105,6 +105,8 @@ struct symbol;
typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
+void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
+ struct dso *dso);
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
unsigned int sym_priv_size);
struct map *map__clone(struct map *self);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index d302e513e06..3b7ce1bf9f8 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -20,6 +20,18 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
return n;
}
+void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
+ struct dso *dso)
+{
+ self->start = start;
+ self->end = end;
+ self->pgoff = pgoff;
+ self->dso = dso;
+ self->map_ip = map__map_ip;
+ self->unmap_ip = map__unmap_ip;
+ RB_CLEAR_NODE(&self->rb_node);
+}
+
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
unsigned int sym_priv_size)
{
@@ -28,6 +40,7 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
if (self != NULL) {
const char *filename = event->filename;
char newfilename[PATH_MAX];
+ struct dso *dso;
int anon;
if (cwd) {
@@ -47,20 +60,15 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
filename = newfilename;
}
- self->start = event->start;
- self->end = event->start + event->len;
- self->pgoff = event->pgoff;
-
- self->dso = dsos__findnew(filename, sym_priv_size);
- if (self->dso == NULL)
+ dso = dsos__findnew(filename, sym_priv_size);
+ if (dso == NULL)
goto out_delete;
+ map__init(self, event->start, event->start + event->len,
+ event->pgoff, dso);
+
if (self->dso == vdso || anon)
self->map_ip = self->unmap_ip = identity__map_ip;
- else {
- self->map_ip = map__map_ip;
- self->unmap_ip = map__unmap_ip;
- }
}
return self;
out_delete:
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0273d83f728..13677b5dbe5 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1132,18 +1132,12 @@ static struct map *map__new2(u64 start, struct dso *dso)
struct map *self = malloc(sizeof(*self));
if (self != NULL) {
- self->start = start;
/*
- * Will be filled after we load all the symbols
+ * ->end will be filled after we load all the symbols
*/
- self->end = 0;
-
- self->pgoff = 0;
- self->dso = dso;
- self->map_ip = map__map_ip;
- self->unmap_ip = map__unmap_ip;
- RB_CLEAR_NODE(&self->rb_node);
+ map__init(self, start, 0, 0, dso);
}
+
return self;
}
--
cgit v1.2.3-70-g09d2
From 00a192b395b0606ad0265243844b3cd68e73420a Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 30 Oct 2009 16:28:24 -0200
Subject: perf tools: Simplify the symbol priv area mechanism
Before we were storing this in the DSO, but in fact this is a
property of the 'symbol' class, not something that will vary
among DSOs, so move it to a global variable and initialize it
using the existing symbol__init routine.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1256927305-4628-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 21 ++++++------
tools/perf/builtin-report.c | 4 +--
tools/perf/builtin-sched.c | 2 +-
tools/perf/builtin-timechart.c | 2 +-
tools/perf/builtin-top.c | 12 +++----
tools/perf/builtin-trace.c | 2 +-
tools/perf/util/data_map.c | 2 +-
tools/perf/util/event.h | 3 +-
tools/perf/util/map.c | 5 ++-
tools/perf/util/symbol.c | 73 ++++++++++++++++++++----------------------
tools/perf/util/symbol.h | 24 +++++++-------
11 files changed, 70 insertions(+), 80 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 8688bfee42a..77d50a6d680 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -55,11 +55,11 @@ struct sym_priv {
static const char *sym_hist_filter;
-static int symbol_filter(struct map *map, struct symbol *sym)
+static int symbol_filter(struct map *map __used, struct symbol *sym)
{
if (sym_hist_filter == NULL ||
strcmp(sym->name, sym_hist_filter) == 0) {
- struct sym_priv *priv = dso__sym_priv(map->dso, sym);
+ struct sym_priv *priv = symbol__priv(sym);
const int size = (sizeof(*priv->hist) +
(sym->end - sym->start) * sizeof(u64));
@@ -92,7 +92,7 @@ static void hist_hit(struct hist_entry *he, u64 ip)
if (!sym || !he->map)
return;
- priv = dso__sym_priv(he->map->dso, sym);
+ priv = symbol__priv(sym);
if (!priv->hist)
return;
@@ -202,8 +202,7 @@ got_map:
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, NULL, 0,
- sizeof(struct sym_priv));
+ struct map *map = map__new(&event->mmap, NULL, 0);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d: [%p(%p) @ %p]: %s\n",
@@ -355,7 +354,7 @@ static int parse_line(FILE *file, struct hist_entry *he, u64 len)
unsigned int hits = 0;
double percent = 0.0;
const char *color;
- struct sym_priv *priv = dso__sym_priv(he->map->dso, sym);
+ struct sym_priv *priv = symbol__priv(sym);
struct sym_ext *sym_ext = priv->ext;
struct sym_hist *h = priv->hist;
@@ -422,7 +421,7 @@ static void insert_source_line(struct sym_ext *sym_ext)
static void free_source_line(struct hist_entry *he, int len)
{
- struct sym_priv *priv = dso__sym_priv(he->map->dso, he->sym);
+ struct sym_priv *priv = symbol__priv(he->sym);
struct sym_ext *sym_ext = priv->ext;
int i;
@@ -446,7 +445,7 @@ get_source_line(struct hist_entry *he, int len, const char *filename)
int i;
char cmd[PATH_MAX * 2];
struct sym_ext *sym_ext;
- struct sym_priv *priv = dso__sym_priv(he->map->dso, sym);
+ struct sym_priv *priv = symbol__priv(sym);
struct sym_hist *h = priv->hist;
if (!h->sum)
@@ -589,7 +588,7 @@ static void find_annotations(void)
if (he->sym == NULL)
continue;
- priv = dso__sym_priv(he->map->dso, he->sym);
+ priv = symbol__priv(he->sym);
if (priv->hist == NULL)
continue;
@@ -637,7 +636,7 @@ static int __cmd_annotate(void)
exit(0);
}
- if (load_kernel(sizeof(struct sym_priv), symbol_filter) < 0) {
+ if (load_kernel(symbol_filter) < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
}
@@ -769,7 +768,7 @@ static void setup_sorting(void)
int cmd_annotate(int argc, const char **argv, const char *prefix __used)
{
- symbol__init();
+ symbol__init(sizeof(struct sym_priv));
page_size = getpagesize();
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index f1bcd35bd22..1a806d5f05c 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -751,7 +751,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
static int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, cwd, cwdlen, 0);
+ struct map *map = map__new(&event->mmap, cwd, cwdlen);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
@@ -1093,7 +1093,7 @@ static void setup_list(struct strlist **list, const char *list_str,
int cmd_report(int argc, const char **argv, const char *prefix __used)
{
- symbol__init();
+ symbol__init(0);
argc = parse_options(argc, argv, options, report_usage, 0);
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 9a48d9626be..df44b756cec 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1937,7 +1937,7 @@ static int __cmd_record(int argc, const char **argv)
int cmd_sched(int argc, const char **argv, const char *prefix __used)
{
- symbol__init();
+ symbol__init(0);
argc = parse_options(argc, argv, sched_options, sched_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 0a2f22261c3..665877e4a94 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -1266,7 +1266,7 @@ static const struct option options[] = {
int cmd_timechart(int argc, const char **argv, const char *prefix __used)
{
- symbol__init();
+ symbol__init(0);
page_size = getpagesize();
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ee87640b335..2aea913f7eb 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -789,7 +789,7 @@ static int symbol_filter(struct map *map, struct symbol *sym)
strstr(name, "_text_end"))
return 1;
- syme = dso__sym_priv(map->dso, sym);
+ syme = symbol__priv(sym);
syme->map = map;
pthread_mutex_init(&syme->source_lock, NULL);
if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter))
@@ -807,8 +807,7 @@ static int symbol_filter(struct map *map, struct symbol *sym)
static int parse_symbols(void)
{
- if (dsos__load_kernel(vmlinux_name, sizeof(struct sym_entry),
- symbol_filter, 1) <= 0)
+ if (dsos__load_kernel(vmlinux_name, symbol_filter, 1) <= 0)
return -1;
if (dump_symtab)
@@ -859,7 +858,7 @@ static void event__process_sample(const event_t *self, int counter)
return;
}
- syme = dso__sym_priv(map->dso, sym);
+ syme = symbol__priv(sym);
if (!syme->skip) {
syme->count[counter]++;
@@ -878,8 +877,7 @@ static void event__process_mmap(event_t *self)
struct thread *thread = threads__findnew(self->mmap.pid);
if (thread != NULL) {
- struct map *map = map__new(&self->mmap, NULL, 0,
- sizeof(struct sym_entry));
+ struct map *map = map__new(&self->mmap, NULL, 0);
if (map != NULL)
thread__insert_map(thread, map);
}
@@ -1176,7 +1174,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
{
int counter;
- symbol__init();
+ symbol__init(sizeof(struct sym_entry));
page_size = sysconf(_SC_PAGE_SIZE);
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index e566bbe3f22..d042d656c56 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -151,7 +151,7 @@ static const struct option options[] = {
int cmd_trace(int argc, const char **argv, const char *prefix __used)
{
- symbol__init();
+ symbol__init(0);
argc = parse_options(argc, argv, options, annotate_usage, 0);
if (argc) {
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index 18accb8fee4..c458db9ede6 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -130,7 +130,7 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
if (curr_handler->sample_type_check(sample_type) < 0)
exit(-1);
- if (load_kernel(0, NULL) < 0) {
+ if (load_kernel(NULL) < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 4a158a01bb9..0a443bea68d 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -107,8 +107,7 @@ typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
struct dso *dso);
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
- unsigned int sym_priv_size);
+struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 3b7ce1bf9f8..679011c1b6d 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -32,8 +32,7 @@ void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
RB_CLEAR_NODE(&self->rb_node);
}
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
- unsigned int sym_priv_size)
+struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
{
struct map *self = malloc(sizeof(*self));
@@ -60,7 +59,7 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen,
filename = newfilename;
}
- dso = dsos__findnew(filename, sym_priv_size);
+ dso = dsos__findnew(filename);
if (dso == NULL)
goto out_delete;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 13677b5dbe5..cf2c7f77886 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -26,6 +26,7 @@ static void dsos__add(struct dso *dso);
static struct dso *dsos__find(const char *name);
static struct map *map__new2(u64 start, struct dso *dso);
static void kernel_maps__insert(struct map *map);
+unsigned int symbol__priv_size;
static struct rb_root kernel_maps;
@@ -75,18 +76,17 @@ static void kernel_maps__fixup_end(void)
}
}
-static struct symbol *symbol__new(u64 start, u64 len, const char *name,
- unsigned int priv_size)
+static struct symbol *symbol__new(u64 start, u64 len, const char *name)
{
size_t namelen = strlen(name) + 1;
- struct symbol *self = calloc(1, priv_size + sizeof(*self) + namelen);
-
+ struct symbol *self = calloc(1, (symbol__priv_size +
+ sizeof(*self) + namelen));
if (!self)
return NULL;
- if (priv_size) {
- memset(self, 0, priv_size);
- self = ((void *)self) + priv_size;
+ if (symbol__priv_size) {
+ memset(self, 0, symbol__priv_size);
+ self = ((void *)self) + symbol__priv_size;
}
self->start = start;
self->end = len ? start + len - 1 : start;
@@ -98,9 +98,9 @@ static struct symbol *symbol__new(u64 start, u64 len, const char *name,
return self;
}
-static void symbol__delete(struct symbol *self, unsigned int priv_size)
+static void symbol__delete(struct symbol *self)
{
- free(((void *)self) - priv_size);
+ free(((void *)self) - symbol__priv_size);
}
static size_t symbol__fprintf(struct symbol *self, FILE *fp)
@@ -109,7 +109,7 @@ static size_t symbol__fprintf(struct symbol *self, FILE *fp)
self->start, self->end, self->name);
}
-struct dso *dso__new(const char *name, unsigned int sym_priv_size)
+struct dso *dso__new(const char *name)
{
struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
@@ -118,7 +118,6 @@ struct dso *dso__new(const char *name, unsigned int sym_priv_size)
self->long_name = self->name;
self->short_name = self->name;
self->syms = RB_ROOT;
- self->sym_priv_size = sym_priv_size;
self->find_symbol = dso__find_symbol;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
@@ -136,7 +135,7 @@ static void dso__delete_symbols(struct dso *self)
pos = rb_entry(next, struct symbol, rb_node);
next = rb_next(&pos->rb_node);
rb_erase(&pos->rb_node, &self->syms);
- symbol__delete(pos, self->sym_priv_size);
+ symbol__delete(pos);
}
}
@@ -250,8 +249,7 @@ static int kernel_maps__load_all_kallsyms(void)
/*
* Will fix up the end later, when we have all symbols sorted.
*/
- sym = symbol__new(start, 0, symbol_name,
- kernel_map->dso->sym_priv_size);
+ sym = symbol__new(start, 0, symbol_name);
if (sym == NULL)
goto out_delete_line;
@@ -317,8 +315,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
snprintf(dso_name, sizeof(dso_name), "[kernel].%d",
kernel_range++);
- dso = dso__new(dso_name,
- kernel_map->dso->sym_priv_size);
+ dso = dso__new(dso_name);
if (dso == NULL)
return -1;
@@ -336,7 +333,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
if (filter && filter(map, pos)) {
delete_symbol:
rb_erase(&pos->rb_node, &kernel_map->dso->syms);
- symbol__delete(pos, kernel_map->dso->sym_priv_size);
+ symbol__delete(pos);
} else {
if (map != kernel_map) {
rb_erase(&pos->rb_node, &kernel_map->dso->syms);
@@ -417,14 +414,13 @@ static int dso__load_perf_map(struct dso *self, struct map *map,
if (len + 2 >= line_len)
continue;
- sym = symbol__new(start, size, line + len,
- self->sym_priv_size);
+ sym = symbol__new(start, size, line + len);
if (sym == NULL)
goto out_delete_line;
if (filter && filter(map, sym))
- symbol__delete(sym, self->sym_priv_size);
+ symbol__delete(sym);
else {
dso__insert_symbol(self, sym);
nr_syms++;
@@ -616,7 +612,7 @@ static int dso__synthesize_plt_symbols(struct dso *self)
"%s@plt", elf_sym__name(&sym, symstrs));
f = symbol__new(plt_offset, shdr_plt.sh_entsize,
- sympltname, self->sym_priv_size);
+ sympltname);
if (!f)
goto out_elf_end;
@@ -634,7 +630,7 @@ static int dso__synthesize_plt_symbols(struct dso *self)
"%s@plt", elf_sym__name(&sym, symstrs));
f = symbol__new(plt_offset, shdr_plt.sh_entsize,
- sympltname, self->sym_priv_size);
+ sympltname);
if (!f)
goto out_elf_end;
@@ -769,7 +765,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
if (kmodule)
start += map->start + shdr.sh_offset;
- curr_dso = dso__new(dso_name, self->sym_priv_size);
+ curr_dso = dso__new(dso_name);
if (curr_dso == NULL)
goto out_elf_end;
curr_map = map__new2(start, curr_dso);
@@ -803,14 +799,13 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
if (demangled != NULL)
elf_name = demangled;
new_symbol:
- f = symbol__new(sym.st_value, sym.st_size, elf_name,
- curr_dso->sym_priv_size);
+ f = symbol__new(sym.st_value, sym.st_size, elf_name);
free(demangled);
if (!f)
goto out_elf_end;
if (filter && filter(curr_map, f))
- symbol__delete(f, curr_dso->sym_priv_size);
+ symbol__delete(f);
else {
dso__insert_symbol(curr_dso, f);
nr++;
@@ -1141,7 +1136,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
return self;
}
-static int dsos__load_modules(unsigned int sym_priv_size)
+static int dsos__load_modules(void)
{
char *line = NULL;
size_t n;
@@ -1180,7 +1175,7 @@ static int dsos__load_modules(unsigned int sym_priv_size)
*sep = '\0';
snprintf(name, sizeof(name), "[%s]", line);
- dso = dso__new(name, sym_priv_size);
+ dso = dso__new(name);
if (dso == NULL)
goto out_delete_line;
@@ -1224,11 +1219,11 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
return err;
}
-int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
- symbol_filter_t filter, int use_modules)
+int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter,
+ int use_modules)
{
int err = -1;
- struct dso *dso = dso__new(vmlinux, sym_priv_size);
+ struct dso *dso = dso__new(vmlinux);
if (dso == NULL)
return -1;
@@ -1240,7 +1235,7 @@ int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
- if (use_modules && dsos__load_modules(sym_priv_size) < 0) {
+ if (use_modules && dsos__load_modules() < 0) {
pr_warning("Failed to load list of modules in use! "
"Continuing...\n");
use_modules = 0;
@@ -1312,12 +1307,12 @@ static struct dso *dsos__find(const char *name)
return NULL;
}
-struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size)
+struct dso *dsos__findnew(const char *name)
{
struct dso *dso = dsos__find(name);
if (!dso) {
- dso = dso__new(name, sym_priv_size);
+ dso = dso__new(name);
if (dso != NULL)
dsos__add(dso);
}
@@ -1333,13 +1328,12 @@ void dsos__fprintf(FILE *fp)
dso__fprintf(pos, fp);
}
-int load_kernel(unsigned int sym_priv_size, symbol_filter_t filter)
+int load_kernel(symbol_filter_t filter)
{
- if (dsos__load_kernel(vmlinux_name, sym_priv_size, filter,
- modules) <= 0)
+ if (dsos__load_kernel(vmlinux_name, filter, modules) <= 0)
return -1;
- vdso = dso__new("[vdso]", 0);
+ vdso = dso__new("[vdso]");
if (!vdso)
return -1;
@@ -1348,7 +1342,8 @@ int load_kernel(unsigned int sym_priv_size, symbol_filter_t filter)
return 0;
}
-void symbol__init(void)
+void symbol__init(unsigned int priv_size)
{
elf_version(EV_CURRENT);
+ symbol__priv_size = priv_size;
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 432edbca780..a471a384073 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -39,11 +39,17 @@ struct symbol {
char name[0];
};
+extern unsigned int symbol__priv_size;
+
+static inline void *symbol__priv(struct symbol *self)
+{
+ return ((void *)self) - symbol__priv_size;
+}
+
struct dso {
struct list_head node;
struct rb_root syms;
struct symbol *(*find_symbol)(struct dso *, u64 ip);
- unsigned int sym_priv_size;
unsigned char adjust_symbols;
unsigned char slen_calculated;
bool loaded;
@@ -53,28 +59,22 @@ struct dso {
char name[0];
};
-struct dso *dso__new(const char *name, unsigned int sym_priv_size);
+struct dso *dso__new(const char *name);
void dso__delete(struct dso *self);
-static inline void *dso__sym_priv(struct dso *self, struct symbol *sym)
-{
- return ((void *)sym) - self->sym_priv_size;
-}
-
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
-int dsos__load_kernel(const char *vmlinux, unsigned int sym_priv_size,
- symbol_filter_t filter, int modules);
-struct dso *dsos__findnew(const char *name, unsigned int sym_priv_size);
+int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter, int modules);
+struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
char dso__symtab_origin(const struct dso *self);
-int load_kernel(unsigned int sym_priv_size, symbol_filter_t filter);
+int load_kernel(symbol_filter_t filter);
-void symbol__init(void);
+void symbol__init(unsigned int priv_size);
extern struct list_head dsos;
extern struct map *kernel_map;
--
cgit v1.2.3-70-g09d2
From 6d7aa9d721c8c640066142fd9534afcdf68d7f9d Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 3 Nov 2009 15:52:18 -0200
Subject: perf symbols: Initialize dso->loaded
Brown paper bag bug introduced in:
66bd8424cc05e800db384053bf7ab967e4658468 ("perf tools: Delay
loading symtabs till we hit a map with it")
Without this we were not loading any symtabs that happened to be
on a DSO for which the allocated memory for ->loaded was !0.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1257270738-5669-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index cf2c7f77886..93c49f4685f 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -121,6 +121,7 @@ struct dso *dso__new(const char *name)
self->find_symbol = dso__find_symbol;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
+ self->loaded = false;
}
return self;
--
cgit v1.2.3-70-g09d2
From 2643ce11457a99a85c5bed8dd631e35968e6ca5a Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 3 Nov 2009 21:46:10 -0200
Subject: perf symbols: Factor out buildid reading routine
So that we can run it without having a DSO instance.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1257291970-8208-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 51 ++++++++++++++++++++++++++++++++----------------
tools/perf/util/symbol.h | 2 ++
2 files changed, 36 insertions(+), 17 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index ac94d7b94f6..e7c7cdb851c 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -825,27 +825,27 @@ out_close:
return err;
}
-#define BUILD_ID_SIZE 128
+#define BUILD_ID_SIZE 20
-static char *dso__read_build_id(struct dso *self)
+int filename__read_build_id(const char *filename, void *bf, size_t size)
{
- int i;
+ int fd, err = -1;
GElf_Ehdr ehdr;
GElf_Shdr shdr;
Elf_Data *build_id_data;
Elf_Scn *sec;
- char *build_id = NULL, *bid;
- unsigned char *raw;
Elf *elf;
- int fd = open(self->long_name, O_RDONLY);
+ if (size < BUILD_ID_SIZE)
+ goto out;
+
+ fd = open(filename, O_RDONLY);
if (fd < 0)
goto out;
elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
- pr_err("%s: cannot read %s ELF file.\n", __func__,
- self->long_name);
+ pr_err("%s: cannot read %s ELF file.\n", __func__, filename);
goto out_close;
}
@@ -854,29 +854,46 @@ static char *dso__read_build_id(struct dso *self)
goto out_elf_end;
}
- sec = elf_section_by_name(elf, &ehdr, &shdr, ".note.gnu.build-id", NULL);
+ sec = elf_section_by_name(elf, &ehdr, &shdr,
+ ".note.gnu.build-id", NULL);
if (sec == NULL)
goto out_elf_end;
build_id_data = elf_getdata(sec, NULL);
if (build_id_data == NULL)
goto out_elf_end;
- build_id = malloc(BUILD_ID_SIZE);
+ memcpy(bf, build_id_data->d_buf + 16, BUILD_ID_SIZE);
+ err = BUILD_ID_SIZE;
+out_elf_end:
+ elf_end(elf);
+out_close:
+ close(fd);
+out:
+ return err;
+}
+
+static char *dso__read_build_id(struct dso *self)
+{
+ int i, len;
+ char *build_id = NULL, *bid;
+ unsigned char rawbf[BUILD_ID_SIZE], *raw;
+
+ len = filename__read_build_id(self->long_name, rawbf, sizeof(rawbf));
+ if (len < 0)
+ goto out;
+
+ build_id = malloc(len * 2 + 1);
if (build_id == NULL)
- goto out_elf_end;
- raw = build_id_data->d_buf + 16;
+ goto out;
bid = build_id;
- for (i = 0; i < 20; ++i) {
+ raw = rawbf;
+ for (i = 0; i < len; ++i) {
sprintf(bid, "%02x", *raw);
++raw;
bid += 2;
}
pr_debug2("%s(%s): %s\n", __func__, self->long_name, build_id);
-out_elf_end:
- elf_end(elf);
-out_close:
- close(fd);
out:
return build_id;
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 088433062dd..e0d4a583f8d 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -82,6 +82,8 @@ void dsos__fprintf(FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
char dso__symtab_origin(const struct dso *self);
+int filename__read_build_id(const char *filename, void *bf, size_t size);
+
int load_kernel(symbol_filter_t filter);
void symbol__init(unsigned int priv_size);
--
cgit v1.2.3-70-g09d2
From 8d06367fa79c053a4a56a2ce0bb9e840f5da1236 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 4 Nov 2009 18:50:43 -0200
Subject: perf symbols: Use the buildids if present
With this change 'perf record' will intercept PERF_RECORD_MMAP
calls, creating a linked list of DSOs, then when the session
finishes, it will traverse this list and read the buildids,
stashing them at the end of the file and will set up a new
feature bit in the header bitmask.
'perf report' will then notice this feature and populate the
'dsos' list and set the build ids.
When reading the symtabs it will refuse to load from a file that
doesn't have the same build id. This improves the
reliability of the profiler output, as symbols and profiling
data is more guaranteed to match.
Example:
[root@doppio ~]# perf report | head
/home/acme/bin/perf with build id b1ea544ac3746e7538972548a09aadecc5753868 not found, continuing without symbols
# Samples: 2621434559
#
# Overhead Command Shared Object Symbol
# ........ ............... ............................. ......
#
7.91% init [kernel] [k] read_hpet
7.64% init [kernel] [k] mwait_idle_with_hints
7.60% swapper [kernel] [k] read_hpet
7.60% swapper [kernel] [k] mwait_idle_with_hints
3.65% init [kernel] [k] 0xffffffffa02339d9
[root@doppio ~]#
In this case the 'perf' binary was an older one, vanished,
so its symbols probably wouldn't match or would cause subtly
different (and misleading) output.
Next patches will support the kernel as well, reading the build
id notes for it and the modules from /sys.
Another patch should also introduce a new plumbing command:
'perf list-buildids'
that will then be used in porcelain that is distro specific to
fetch -debuginfo packages where such buildids are present. This
will in turn allow for one to run 'perf record' in one machine
and 'perf report' in another.
Future work on having the buildid sent directly from the kernel
in the PERF_RECORD_MMAP event is needed to close races, as the
DSO can be changed during a 'perf record' session, but this
patch at least helps with non-corner cases and current/older
kernels.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: K. Prasad <prasad@linux.vnet.ibm.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Roland McGrath <roland@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <1257367843-26224-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-record.c | 49 ++++++++++++++++++++++++++--
tools/perf/util/data_map.c | 37 +++++++++++++++++++++
tools/perf/util/event.h | 7 ++++
tools/perf/util/header.c | 10 ++++++
tools/perf/util/header.h | 4 +++
tools/perf/util/map.c | 14 ++++++--
tools/perf/util/symbol.c | 78 ++++++++++++++++++++++++++++++++-------------
tools/perf/util/symbol.h | 10 ++++--
8 files changed, 179 insertions(+), 30 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4a73d89ce5d..ab333812ace 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -17,6 +17,7 @@
#include "util/header.h"
#include "util/event.h"
#include "util/debug.h"
+#include "util/symbol.h"
#include <unistd.h>
#include <sched.h>
@@ -109,9 +110,21 @@ static void write_output(void *buf, size_t size)
}
}
+static void write_event(event_t *buf, size_t size)
+{
+ /*
+ * Add it to the list of DSOs, so that when we finish this
+ * record session we can pick the available build-ids.
+ */
+ if (buf->header.type == PERF_RECORD_MMAP)
+ dsos__findnew(buf->mmap.filename);
+
+ write_output(buf, size);
+}
+
static int process_synthesized_event(event_t *event)
{
- write_output(event, event->header.size);
+ write_event(event, event->header.size);
return 0;
}
@@ -163,14 +176,14 @@ static void mmap_read(struct mmap_data *md)
size = md->mask + 1 - (old & md->mask);
old += size;
- write_output(buf, size);
+ write_event(buf, size);
}
buf = &data[old & md->mask];
size = head - old;
old += size;
- write_output(buf, size);
+ write_event(buf, size);
md->prev = old;
mmap_write_tail(md, old);
@@ -365,10 +378,38 @@ static void open_counters(int cpu, pid_t pid)
nr_cpu++;
}
+static bool write_buildid_table(void)
+{
+ struct dso *pos;
+ bool have_buildid = false;
+
+ list_for_each_entry(pos, &dsos, node) {
+ struct build_id_event b;
+ size_t len;
+
+ if (filename__read_build_id(pos->long_name,
+ &b.build_id,
+ sizeof(b.build_id)) < 0)
+ continue;
+ have_buildid = true;
+ memset(&b.header, 0, sizeof(b.header));
+ len = strlen(pos->long_name) + 1;
+ len = ALIGN(len, 64);
+ b.header.size = sizeof(b) + len;
+ write_output(&b, sizeof(b));
+ write_output(pos->long_name, len);
+ }
+
+ return have_buildid;
+}
+
static void atexit_header(void)
{
header->data_size += bytes_written;
+ if (write_buildid_table())
+ perf_header__set_feat(header, HEADER_BUILD_ID);
+
perf_header__write(header, output);
}
@@ -572,6 +613,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
{
int counter;
+ symbol__init(0);
+
argc = parse_options(argc, argv, options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target_pid == -1 && !system_wide)
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index c458db9ede6..00a9c114c8d 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -70,6 +70,39 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
}
}
+static int perf_header__read_build_ids(const struct perf_header *self,
+ int input, off_t file_size)
+{
+ off_t offset = self->data_offset + self->data_size;
+ struct build_id_event bev;
+ char filename[PATH_MAX];
+ int err = -1;
+
+ if (lseek(input, offset, SEEK_SET) < 0)
+ return -1;
+
+ while (offset < file_size) {
+ struct dso *dso;
+ ssize_t len;
+
+ if (read(input, &bev, sizeof(bev)) != sizeof(bev))
+ goto out;
+
+ len = bev.header.size - sizeof(bev);
+ if (read(input, filename, len) != len)
+ goto out;
+
+ dso = dsos__findnew(filename);
+ if (dso != NULL)
+ dso__set_build_id(dso, &bev.build_id);
+
+ offset += bev.header.size;
+ }
+ err = 0;
+out:
+ return err;
+}
+
int mmap_dispatch_perf_file(struct perf_header **pheader,
const char *input_name,
int force,
@@ -130,6 +163,10 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
if (curr_handler->sample_type_check(sample_type) < 0)
exit(-1);
+ if (perf_header__has_feat(header, HEADER_BUILD_ID) &&
+ perf_header__read_build_ids(header, input, input_stat.st_size))
+ pr_debug("failed to read buildids, continuing...\n");
+
if (load_kernel(NULL) < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 0a443bea68d..34c6fcb82d9 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -61,6 +61,13 @@ struct sample_event{
u64 array[];
};
+#define BUILD_ID_SIZE 20
+
+struct build_id_event {
+ struct perf_event_header header;
+ u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))];
+ char filename[];
+};
typedef union event_union {
struct perf_event_header header;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 7d26659b806..050f543fd96 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -149,6 +149,16 @@ void perf_header__feat_trace_info(struct perf_header *header)
set_bit(HEADER_TRACE_INFO, header->adds_features);
}
+void perf_header__set_feat(struct perf_header *self, int feat)
+{
+ set_bit(feat, self->adds_features);
+}
+
+bool perf_header__has_feat(const struct perf_header *self, int feat)
+{
+ return test_bit(feat, self->adds_features);
+}
+
static void do_write(int fd, void *buf, size_t size)
{
while (size) {
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 2ea9dfb1236..2f233c5db7e 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -3,6 +3,7 @@
#include "../../../include/linux/perf_event.h"
#include <sys/types.h>
+#include <stdbool.h>
#include "types.h"
#include <linux/bitmap.h>
@@ -15,6 +16,7 @@ struct perf_header_attr {
};
#define HEADER_TRACE_INFO 1
+#define HEADER_BUILD_ID 2
#define HEADER_FEAT_BITS 256
@@ -48,6 +50,8 @@ u64 perf_header__sample_type(struct perf_header *header);
struct perf_event_attr *
perf_header__find_attr(u64 id, struct perf_header *header);
void perf_header__feat_trace_info(struct perf_header *header);
+void perf_header__set_feat(struct perf_header *self, int feat);
+bool perf_header__has_feat(const struct perf_header *self, int feat);
struct perf_header *perf_header__new(void);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 33f868420d7..94ca95073c4 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -84,8 +84,18 @@ map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter)
int nr = dso__load(self->dso, self, filter);
if (nr < 0) {
- pr_warning("Failed to open %s, continuing without symbols\n",
- self->dso->long_name);
+ if (self->dso->has_build_id) {
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+ build_id__sprintf(self->dso->build_id,
+ sizeof(self->dso->build_id),
+ sbuild_id);
+ pr_warning("%s with build id %s not found",
+ self->dso->long_name, sbuild_id);
+ } else
+ pr_warning("Failed to open %s",
+ self->dso->long_name);
+ pr_warning(", continuing without symbols\n");
return NULL;
} else if (nr == 0) {
const char *name = self->dso->long_name;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index e7c7cdb851c..a2e95ce1f22 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -121,7 +121,8 @@ struct dso *dso__new(const char *name)
self->find_symbol = dso__find_symbol;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
- self->loaded = false;
+ self->loaded = 0;
+ self->has_build_id = 0;
}
return self;
@@ -148,6 +149,12 @@ void dso__delete(struct dso *self)
free(self);
}
+void dso__set_build_id(struct dso *self, void *build_id)
+{
+ memcpy(self->build_id, build_id, sizeof(self->build_id));
+ self->has_build_id = 1;
+}
+
static void dso__insert_symbol(struct dso *self, struct symbol *sym)
{
struct rb_node **p = &self->syms.rb_node;
@@ -190,11 +197,30 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip)
return NULL;
}
-size_t dso__fprintf(struct dso *self, FILE *fp)
+int build_id__sprintf(u8 *self, int len, char *bf)
{
- size_t ret = fprintf(fp, "dso: %s\n", self->short_name);
+ char *bid = bf;
+ u8 *raw = self;
+ int i;
+ for (i = 0; i < len; ++i) {
+ sprintf(bid, "%02x", *raw);
+ ++raw;
+ bid += 2;
+ }
+
+ return raw - self;
+}
+
+size_t dso__fprintf(struct dso *self, FILE *fp)
+{
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
struct rb_node *nd;
+ size_t ret;
+
+ build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id);
+ ret = fprintf(fp, "dso: %s (%s)\n", self->short_name, sbuild_id);
+
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
ret += symbol__fprintf(pos, fp);
@@ -825,8 +851,6 @@ out_close:
return err;
}
-#define BUILD_ID_SIZE 20
-
int filename__read_build_id(const char *filename, void *bf, size_t size)
{
int fd, err = -1;
@@ -845,7 +869,7 @@ int filename__read_build_id(const char *filename, void *bf, size_t size)
elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
- pr_err("%s: cannot read %s ELF file.\n", __func__, filename);
+ pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename);
goto out_close;
}
@@ -874,9 +898,9 @@ out:
static char *dso__read_build_id(struct dso *self)
{
- int i, len;
- char *build_id = NULL, *bid;
- unsigned char rawbf[BUILD_ID_SIZE], *raw;
+ int len;
+ char *build_id = NULL;
+ unsigned char rawbf[BUILD_ID_SIZE];
len = filename__read_build_id(self->long_name, rawbf, sizeof(rawbf));
if (len < 0)
@@ -885,15 +909,8 @@ static char *dso__read_build_id(struct dso *self)
build_id = malloc(len * 2 + 1);
if (build_id == NULL)
goto out;
- bid = build_id;
- raw = rawbf;
- for (i = 0; i < len; ++i) {
- sprintf(bid, "%02x", *raw);
- ++raw;
- bid += 2;
- }
- pr_debug2("%s(%s): %s\n", __func__, self->long_name, build_id);
+ build_id__sprintf(rawbf, len, build_id);
out:
return build_id;
}
@@ -922,7 +939,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
int ret = -1;
int fd;
- self->loaded = true;
+ self->loaded = 1;
if (!name)
return -1;
@@ -940,6 +957,8 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
more:
do {
+ int berr = 0;
+
self->origin++;
switch (self->origin) {
case DSO__ORIG_FEDORA:
@@ -956,8 +975,7 @@ more:
snprintf(name, size,
"/usr/lib/debug/.build-id/%.2s/%s.debug",
build_id, build_id + 2);
- free(build_id);
- break;
+ goto compare_build_id;
}
self->origin++;
/* Fall thru */
@@ -969,6 +987,22 @@ more:
goto out;
}
+ if (self->has_build_id) {
+ bool match;
+ build_id = malloc(BUILD_ID_SIZE);
+ if (build_id == NULL)
+ goto more;
+ berr = filename__read_build_id(name, build_id,
+ BUILD_ID_SIZE);
+compare_build_id:
+ match = berr > 0 && memcmp(build_id, self->build_id,
+ sizeof(self->build_id)) == 0;
+ free(build_id);
+ build_id = NULL;
+ if (!match)
+ goto more;
+ }
+
fd = open(name, O_RDONLY);
} while (fd < 0);
@@ -1034,7 +1068,7 @@ static int dso__load_module_sym(struct dso *self, struct map *map,
{
int err = 0, fd = open(self->long_name, O_RDONLY);
- self->loaded = true;
+ self->loaded = 1;
if (fd < 0) {
pr_err("%s: cannot open %s\n", __func__, self->long_name);
@@ -1225,7 +1259,7 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
{
int err, fd = open(vmlinux, O_RDONLY);
- self->loaded = true;
+ self->loaded = 1;
if (fd < 0)
return -1;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index e0d4a583f8d..f8c1899af48 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -60,10 +60,12 @@ struct dso {
struct list_head node;
struct rb_root syms;
struct symbol *(*find_symbol)(struct dso *, u64 ip);
- unsigned char adjust_symbols;
- unsigned char slen_calculated;
- bool loaded;
+ u8 adjust_symbols:1;
+ u8 slen_calculated:1;
+ u8 loaded:1;
+ u8 has_build_id:1;
unsigned char origin;
+ u8 build_id[BUILD_ID_SIZE];
const char *short_name;
char *long_name;
char name[0];
@@ -81,8 +83,10 @@ void dsos__fprintf(FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
char dso__symtab_origin(const struct dso *self);
+void dso__set_build_id(struct dso *self, void *build_id);
int filename__read_build_id(const char *filename, void *bf, size_t size);
+int build_id__sprintf(u8 *self, int len, char *bf);
int load_kernel(symbol_filter_t filter);
--
cgit v1.2.3-70-g09d2
From 57f395a7eabb913d3605d7392be5bdb0837c9f3d Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Wed, 11 Nov 2009 04:51:04 +0100
Subject: perf tools: Split up build id saving into fetch and write
We are saving the build id once we stop the profiling. And only
after doing that we know if we need to set that feature in the
header through the feature bitmap.
But if we want a proper feature support in the headers, using a
rule of offset/size pairs in sections, we need to know in
advance how many features we need to set in the headers, so that
we can reserve rooms for their section headers.
The current state doesn't allow that, as it forces us to first
save the build-ids to the file right after the datas instead of
planning any structured layout.
That's why this splits up the build-ids processing in two parts:
one that fetches the build-ids from the Dso objects, and one
that saves them into the file.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
LKML-Reference: <1257911467-28276-3-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/event.h | 7 +++++++
tools/perf/util/header.c | 41 +++++++++++++++++------------------------
tools/perf/util/symbol.c | 34 ++++++++++++++++++++++++++++++++++
tools/perf/util/symbol.h | 1 +
4 files changed, 59 insertions(+), 24 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 34c6fcb82d9..1f771ce3a95 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -69,6 +69,13 @@ struct build_id_event {
char filename[];
};
+struct build_id_list {
+ struct build_id_event event;
+ struct list_head list;
+ const char *dso_name;
+ int len;
+};
+
typedef union event_union {
struct perf_event_header header;
struct ip_event ip;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index a4d0bbef9a4..2f702c23f71 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -174,29 +174,18 @@ static void do_write(int fd, void *buf, size_t size)
}
}
-static bool write_buildid_table(int fd)
+static void write_buildid_table(int fd, struct list_head *id_head)
{
- struct dso *pos;
- bool have_buildid = false;
-
- list_for_each_entry(pos, &dsos, node) {
- struct build_id_event b;
- size_t len;
-
- if (filename__read_build_id(pos->long_name,
- &b.build_id,
- sizeof(b.build_id)) < 0)
- continue;
- have_buildid = true;
- memset(&b.header, 0, sizeof(b.header));
- len = strlen(pos->long_name) + 1;
- len = ALIGN(len, 64);
- b.header.size = sizeof(b) + len;
- do_write(fd, &b, sizeof(b));
- do_write(fd, pos->long_name, len);
- }
+ struct build_id_list *iter, *next;
+
+ list_for_each_entry_safe(iter, next, id_head, list) {
+ struct build_id_event *b = &iter->event;
- return have_buildid;
+ do_write(fd, b, sizeof(*b));
+ do_write(fd, (void *)iter->dso_name, iter->len);
+ list_del(&iter->list);
+ free(iter);
+ }
}
static void
@@ -226,10 +215,14 @@ perf_header__adds_write(struct perf_header *self, int fd, bool at_exit)
}
if (at_exit) {
- lseek(fd, self->data_offset + self->data_size, SEEK_SET);
- if (write_buildid_table(fd))
+ LIST_HEAD(id_list);
+
+ if (fetch_build_id_table(&id_list)) {
+ lseek(fd, self->data_offset + self->data_size, SEEK_SET);
perf_header__set_feat(self, HEADER_BUILD_ID);
- lseek(fd, cur_offset, SEEK_SET);
+ write_buildid_table(fd, &id_list);
+ lseek(fd, cur_offset, SEEK_SET);
+ }
}
};
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a2e95ce1f22..9c286db6200 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -851,6 +851,40 @@ out_close:
return err;
}
+bool fetch_build_id_table(struct list_head *head)
+{
+ bool have_buildid = false;
+ struct dso *pos;
+
+ list_for_each_entry(pos, &dsos, node) {
+ struct build_id_list *new;
+ struct build_id_event b;
+ size_t len;
+
+ if (filename__read_build_id(pos->long_name,
+ &b.build_id,
+ sizeof(b.build_id)) < 0)
+ continue;
+ have_buildid = true;
+ memset(&b.header, 0, sizeof(b.header));
+ len = strlen(pos->long_name) + 1;
+ len = ALIGN(len, 64);
+ b.header.size = sizeof(b) + len;
+
+ new = malloc(sizeof(*new));
+ if (!new)
+ die("No memory\n");
+
+ memcpy(&new->event, &b, sizeof(b));
+ new->dso_name = pos->long_name;
+ new->len = len;
+
+ list_add_tail(&new->list, head);
+ }
+
+ return have_buildid;
+}
+
int filename__read_build_id(const char *filename, void *bf, size_t size)
{
int fd, err = -1;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index f8c1899af48..0a34a5493f1 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -86,6 +86,7 @@ char dso__symtab_origin(const struct dso *self);
void dso__set_build_id(struct dso *self, void *build_id);
int filename__read_build_id(const char *filename, void *bf, size_t size);
+bool fetch_build_id_table(struct list_head *head);
int build_id__sprintf(u8 *self, int len, char *bf);
int load_kernel(symbol_filter_t filter);
--
cgit v1.2.3-70-g09d2
From 82164161679c448f33092945ea97cb547a13683a Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 16 Nov 2009 13:48:11 -0200
Subject: perf symbols: Call the symbol filter in dso__synthesize_plt_symbols()
We need to pass the symbol to the filter so that, for instance,
'perf top' can do filtering and also set the private area it
manages, setting the ->map pointer, etc.
I found this while running 'perf top' on a machine where hits
happened on PLT symbols, where ->map wasn't being set up and
segfaults thus happened.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1258386491-20278-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 9c286db6200..93e4b52ccfe 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -281,6 +281,11 @@ static int kernel_maps__load_all_kallsyms(void)
if (sym == NULL)
goto out_delete_line;
+ /*
+ * We will pass the symbols to the filter later, in
+ * kernel_maps__split_kallsyms, when we have split the
+ * maps per module
+ */
dso__insert_symbol(kernel_map->dso, sym);
}
@@ -555,7 +560,8 @@ static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
* And always look at the original dso, not at debuginfo packages, that
* have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS).
*/
-static int dso__synthesize_plt_symbols(struct dso *self)
+static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
+ symbol_filter_t filter)
{
uint32_t nr_rel_entries, idx;
GElf_Sym sym;
@@ -643,8 +649,12 @@ static int dso__synthesize_plt_symbols(struct dso *self)
if (!f)
goto out_elf_end;
- dso__insert_symbol(self, f);
- ++nr;
+ if (filter && filter(map, f))
+ symbol__delete(f);
+ else {
+ dso__insert_symbol(self, f);
+ ++nr;
+ }
}
} else if (shdr_rel_plt.sh_type == SHT_REL) {
GElf_Rel pos_mem, *pos;
@@ -661,8 +671,12 @@ static int dso__synthesize_plt_symbols(struct dso *self)
if (!f)
goto out_elf_end;
- dso__insert_symbol(self, f);
- ++nr;
+ if (filter && filter(map, f))
+ symbol__delete(f);
+ else {
+ dso__insert_symbol(self, f);
+ ++nr;
+ }
}
}
@@ -1050,7 +1064,7 @@ compare_build_id:
goto more;
if (ret > 0) {
- int nr_plt = dso__synthesize_plt_symbols(self);
+ int nr_plt = dso__synthesize_plt_symbols(self, map, filter);
if (nr_plt > 0)
ret += nr_plt;
}
--
cgit v1.2.3-70-g09d2
From 9e03eb2d512e7f3a1e562d4b922aa8b1891750b6 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 16 Nov 2009 16:32:44 -0200
Subject: perf tools: Introduce dsos__fprintf_buildid
To print the buildids in the list of dsos. Will be used by 'perf
buildid-list'
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1258396365-29217-4-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 30 ++++++++++++++++++++++++++----
tools/perf/util/symbol.h | 2 ++
2 files changed, 28 insertions(+), 4 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 93e4b52ccfe..53de9c4488d 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -212,14 +212,21 @@ int build_id__sprintf(u8 *self, int len, char *bf)
return raw - self;
}
-size_t dso__fprintf(struct dso *self, FILE *fp)
+size_t dso__fprintf_buildid(struct dso *self, FILE *fp)
{
char sbuild_id[BUILD_ID_SIZE * 2 + 1];
- struct rb_node *nd;
- size_t ret;
build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id);
- ret = fprintf(fp, "dso: %s (%s)\n", self->short_name, sbuild_id);
+ return fprintf(fp, "%s", sbuild_id);
+}
+
+size_t dso__fprintf(struct dso *self, FILE *fp)
+{
+ struct rb_node *nd;
+ size_t ret = fprintf(fp, "dso: %s (", self->short_name);
+
+ ret += dso__fprintf_buildid(self, fp);
+ ret += fprintf(fp, ")\n");
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
@@ -1428,6 +1435,21 @@ void dsos__fprintf(FILE *fp)
dso__fprintf(pos, fp);
}
+size_t dsos__fprintf_buildid(FILE *fp)
+{
+ struct dso *pos;
+ size_t ret = 0;
+
+ list_for_each_entry(pos, &dsos, node) {
+ ret += dso__fprintf_buildid(pos, fp);
+ if (verbose)
+ ret += fprintf(fp, " %s\n", pos->long_name);
+ else
+ ret += fprintf(fp, "\n");
+ }
+ return ret;
+}
+
int load_kernel(symbol_filter_t filter)
{
if (dsos__load_kernel(vmlinux_name, filter, modules) <= 0)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 0a34a5493f1..51c5a4a0813 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -80,7 +80,9 @@ int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter, int modules);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
+size_t dsos__fprintf_buildid(FILE *fp);
+size_t dso__fprintf_buildid(struct dso *self, FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
char dso__symtab_origin(const struct dso *self);
void dso__set_build_id(struct dso *self, void *build_id);
--
cgit v1.2.3-70-g09d2
From 1124ba73be6a758965340bd997593b2996649d60 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 16 Nov 2009 21:45:25 -0200
Subject: perf buildid-list: Always show the DSO name
Porcelain can ignore it, humans can make more sense of it.
Suggested-by: Frederic Weisbecker <fweisbec@gmail.com>
Suggested-by: Ingo Molnar <mingo@elte.hu>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1258415125-15019-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/Documentation/perf-buildid-list.txt | 2 +-
tools/perf/builtin-buildid-list.c | 2 +-
tools/perf/util/symbol.c | 5 +----
3 files changed, 3 insertions(+), 6 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/Documentation/perf-buildid-list.txt b/tools/perf/Documentation/perf-buildid-list.txt
index abab34e0557..01b642c0bf8 100644
--- a/tools/perf/Documentation/perf-buildid-list.txt
+++ b/tools/perf/Documentation/perf-buildid-list.txt
@@ -26,7 +26,7 @@ OPTIONS
Don't do ownership validation.
-v::
--verbose::
- Be more verbose, showing the name of the DSOs after the buildids.
+ Be more verbose.
SEE ALSO
--------
diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index 2e377e1be43..7dee9d19ab7 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -28,7 +28,7 @@ static const struct option options[] = {
"input file name"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
OPT_BOOLEAN('v', "verbose", &verbose,
- "be more verbose (show counter open errors, etc)"),
+ "be more verbose"),
OPT_END()
};
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 53de9c4488d..1b77e81b38d 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1442,10 +1442,7 @@ size_t dsos__fprintf_buildid(FILE *fp)
list_for_each_entry(pos, &dsos, node) {
ret += dso__fprintf_buildid(pos, fp);
- if (verbose)
- ret += fprintf(fp, " %s\n", pos->long_name);
- else
- ret += fprintf(fp, "\n");
+ ret += fprintf(fp, " %s\n", pos->long_name);
}
return ret;
}
--
cgit v1.2.3-70-g09d2
From cfc10d3bcc50d70f72c0f43d03eee965c726ccc0 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 17 Nov 2009 15:40:53 -0200
Subject: perf symbols: Add a long_name_len member to struct dso
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Using a two bytes hole we already had and since we also need to
calculate this strlen for fetching the buildids. We'll use it in
'perf top' to auto-adjust the output based on the terminal
width.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258479655-28662-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 26 +++++++++++++++++++++-----
tools/perf/util/symbol.h | 1 +
2 files changed, 22 insertions(+), 5 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 1b77e81b38d..5cc96c86861 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -109,13 +109,24 @@ static size_t symbol__fprintf(struct symbol *self, FILE *fp)
self->start, self->end, self->name);
}
+static void dso__set_long_name(struct dso *self, char *name)
+{
+ self->long_name = name;
+ self->long_name_len = strlen(name);
+}
+
+static void dso__set_basename(struct dso *self)
+{
+ self->short_name = basename(self->long_name);
+}
+
struct dso *dso__new(const char *name)
{
struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
if (self != NULL) {
strcpy(self->name, name);
- self->long_name = self->name;
+ dso__set_long_name(self, self->name);
self->short_name = self->name;
self->syms = RB_ROOT;
self->find_symbol = dso__find_symbol;
@@ -888,7 +899,7 @@ bool fetch_build_id_table(struct list_head *head)
continue;
have_buildid = true;
memset(&b.header, 0, sizeof(b.header));
- len = strlen(pos->long_name) + 1;
+ len = pos->long_name_len + 1;
len = ALIGN(len, 64);
b.header.size = sizeof(b) + len;
@@ -1165,6 +1176,7 @@ static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
dso_name[PATH_MAX];
struct map *map;
struct rb_node *last;
+ char *long_name;
if (dot == NULL || strcmp(dot, ".ko"))
continue;
@@ -1179,9 +1191,11 @@ static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
snprintf(path, sizeof(path), "%s/%s",
dirname, dent->d_name);
- map->dso->long_name = strdup(path);
- if (map->dso->long_name == NULL)
+ long_name = strdup(path);
+ if (long_name == NULL)
goto failure;
+ dso__set_long_name(map->dso, long_name);
+ dso__set_basename(map->dso);
err = dso__load_module_sym(map->dso, map, filter);
if (err < 0)
@@ -1420,8 +1434,10 @@ struct dso *dsos__findnew(const char *name)
if (!dso) {
dso = dso__new(name);
- if (dso != NULL)
+ if (dso != NULL) {
dsos__add(dso);
+ dso__set_basename(dso);
+ }
}
return dso;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 51c5a4a0813..5ad1019607d 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -66,6 +66,7 @@ struct dso {
u8 has_build_id:1;
unsigned char origin;
u8 build_id[BUILD_ID_SIZE];
+ u16 long_name_len;
const char *short_name;
char *long_name;
char name[0];
--
cgit v1.2.3-70-g09d2
From d3379ab9050e5522da2aac53d413651fc06be562 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 18 Nov 2009 20:20:50 -0200
Subject: perf symbols: Fix comparision of build_ids
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When we read the build_id from the DSO name to then index into
/usr/lib/debug/.buildid/DSO_BUILD_ID[0:2]/DSO_BUILD_ID[2:], we
were jumping directly to the comparision with the buildid we
already have in dso->build_id (that came from the perf.data
build_id section, collected at perf record time)
unconditionally, even if we didn't had recorded it, and
furthermore, comparing a formatted buildid with a rawbuildid, yikes.
Fix it by deleting the dso__read_build_id() function, that was
really misdesigned anyway, and do the necessary checks and
correct comparison of raw buildids.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258582853-8579-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 52 +++++++++++++++---------------------------------
1 file changed, 16 insertions(+), 36 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 5cc96c86861..594f36a1da8 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -962,25 +962,6 @@ out:
return err;
}
-static char *dso__read_build_id(struct dso *self)
-{
- int len;
- char *build_id = NULL;
- unsigned char rawbf[BUILD_ID_SIZE];
-
- len = filename__read_build_id(self->long_name, rawbf, sizeof(rawbf));
- if (len < 0)
- goto out;
-
- build_id = malloc(len * 2 + 1);
- if (build_id == NULL)
- goto out;
-
- build_id__sprintf(rawbf, len, build_id);
-out:
- return build_id;
-}
-
char dso__symtab_origin(const struct dso *self)
{
static const char origin[] = {
@@ -1001,7 +982,8 @@ char dso__symtab_origin(const struct dso *self)
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
{
int size = PATH_MAX;
- char *name = malloc(size), *build_id = NULL;
+ char *name = malloc(size);
+ u8 build_id[BUILD_ID_SIZE];
int ret = -1;
int fd;
@@ -1023,8 +1005,6 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
more:
do {
- int berr = 0;
-
self->origin++;
switch (self->origin) {
case DSO__ORIG_FEDORA:
@@ -1036,12 +1016,18 @@ more:
self->long_name);
break;
case DSO__ORIG_BUILDID:
- build_id = dso__read_build_id(self);
- if (build_id != NULL) {
+ if (filename__read_build_id(self->long_name, build_id,
+ sizeof(build_id))) {
+ char build_id_hex[BUILD_ID_SIZE * 2 + 1];
+
+ build_id__sprintf(build_id, sizeof(build_id),
+ build_id_hex);
snprintf(name, size,
"/usr/lib/debug/.build-id/%.2s/%s.debug",
- build_id, build_id + 2);
- goto compare_build_id;
+ build_id_hex, build_id_hex + 2);
+ if (self->has_build_id)
+ goto compare_build_id;
+ break;
}
self->origin++;
/* Fall thru */
@@ -1054,18 +1040,12 @@ more:
}
if (self->has_build_id) {
- bool match;
- build_id = malloc(BUILD_ID_SIZE);
- if (build_id == NULL)
+ if (filename__read_build_id(name, build_id,
+ sizeof(build_id)) < 0)
goto more;
- berr = filename__read_build_id(name, build_id,
- BUILD_ID_SIZE);
compare_build_id:
- match = berr > 0 && memcmp(build_id, self->build_id,
- sizeof(self->build_id)) == 0;
- free(build_id);
- build_id = NULL;
- if (!match)
+ if (memcmp(build_id, self->build_id,
+ sizeof(self->build_id)) != 0)
goto more;
}
--
cgit v1.2.3-70-g09d2
From e30a3d12ddf04add3268bfceb0e57ffe47f254c6 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 18 Nov 2009 20:20:51 -0200
Subject: perf symbols: Kill struct build_id_list and die() another day
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
No need for this struct and its allocations, we can just use the
->build_id member we already have in struct dso, then ask for it
to be read, and later traverse the dsos list, writing the
buildid table to the perf.data file.
As a bonus, one more die() function got killed.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258582853-8579-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/event.h | 7 -------
tools/perf/util/header.c | 31 ++++++++++++++++++-------------
tools/perf/util/symbol.c | 37 +++++++++----------------------------
tools/perf/util/symbol.h | 2 +-
4 files changed, 28 insertions(+), 49 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 1f771ce3a95..34c6fcb82d9 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -69,13 +69,6 @@ struct build_id_event {
char filename[];
};
-struct build_id_list {
- struct build_id_event event;
- struct list_head list;
- const char *dso_name;
- int len;
-};
-
typedef union event_union {
struct perf_event_header header;
struct ip_event ip;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b01a9537977..31731f1606b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -176,18 +176,24 @@ static int do_write(int fd, const void *buf, size_t size)
return 0;
}
-static int write_buildid_table(int fd, struct list_head *id_head)
+static int dsos__write_buildid_table(int fd)
{
- struct build_id_list *iter, *next;
-
- list_for_each_entry_safe(iter, next, id_head, list) {
- struct build_id_event *b = &iter->event;
-
- if (do_write(fd, b, sizeof(*b)) < 0 ||
- do_write(fd, iter->dso_name, iter->len) < 0)
+ struct dso *pos;
+
+ list_for_each_entry(pos, &dsos, node) {
+ struct build_id_event b;
+ size_t len;
+
+ if (!pos->has_build_id)
+ continue;
+ len = pos->long_name_len + 1;
+ len = ALIGN(len, 64);
+ memset(&b, 0, sizeof(b));
+ memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
+ b.header.size = sizeof(b) + len;
+ if (do_write(fd, &b, sizeof(b)) < 0 ||
+ do_write(fd, pos->long_name, len) < 0)
return -1;
- list_del(&iter->list);
- free(iter);
}
return 0;
@@ -196,14 +202,13 @@ static int write_buildid_table(int fd, struct list_head *id_head)
static void
perf_header__adds_write(struct perf_header *self, int fd)
{
- LIST_HEAD(id_list);
int nr_sections;
struct perf_file_section *feat_sec;
int sec_size;
u64 sec_start;
int idx = 0;
- if (fetch_build_id_table(&id_list))
+ if (dsos__read_build_ids())
perf_header__set_feat(self, HEADER_BUILD_ID);
nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
@@ -238,7 +243,7 @@ perf_header__adds_write(struct perf_header *self, int fd)
/* Write build-ids */
buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
- if (write_buildid_table(fd, &id_list) < 0)
+ if (dsos__write_buildid_table(fd) < 0)
die("failed to write buildid table");
buildid_sec->size = lseek(fd, 0, SEEK_CUR) - buildid_sec->offset;
}
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 594f36a1da8..946ec319568 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -883,38 +883,19 @@ out_close:
return err;
}
-bool fetch_build_id_table(struct list_head *head)
+bool dsos__read_build_ids(void)
{
- bool have_buildid = false;
+ bool have_build_id = false;
struct dso *pos;
- list_for_each_entry(pos, &dsos, node) {
- struct build_id_list *new;
- struct build_id_event b;
- size_t len;
-
- if (filename__read_build_id(pos->long_name,
- &b.build_id,
- sizeof(b.build_id)) < 0)
- continue;
- have_buildid = true;
- memset(&b.header, 0, sizeof(b.header));
- len = pos->long_name_len + 1;
- len = ALIGN(len, 64);
- b.header.size = sizeof(b) + len;
-
- new = malloc(sizeof(*new));
- if (!new)
- die("No memory\n");
-
- memcpy(&new->event, &b, sizeof(b));
- new->dso_name = pos->long_name;
- new->len = len;
-
- list_add_tail(&new->list, head);
- }
+ list_for_each_entry(pos, &dsos, node)
+ if (filename__read_build_id(pos->long_name, pos->build_id,
+ sizeof(pos->build_id)) > 0) {
+ have_build_id = true;
+ pos->has_build_id = true;
+ }
- return have_buildid;
+ return have_build_id;
}
int filename__read_build_id(const char *filename, void *bf, size_t size)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 5ad1019607d..546eb766d81 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -89,7 +89,7 @@ char dso__symtab_origin(const struct dso *self);
void dso__set_build_id(struct dso *self, void *build_id);
int filename__read_build_id(const char *filename, void *bf, size_t size);
-bool fetch_build_id_table(struct list_head *head);
+bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
int load_kernel(symbol_filter_t filter);
--
cgit v1.2.3-70-g09d2
From f1617b40596cb341ee6602a9d969c5e4cebe9260 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 18 Nov 2009 20:20:52 -0200
Subject: perf symbols: Record the build_ids of kernel modules too
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
[root@doppio linux-2.6-tip]# perf record -a sleep 2s;perf
buildid-list|tail [ perf record: Woken up 1 times to write data
] [ perf record: Captured and wrote 0.162 MB perf.data (~7078
samples) ] 881588fa57b3c1696bc91e5e804a11304f093535 [cfg80211]
4d47ce1da9d16bad00c962c072451b7c681e82df [snd_page_alloc]
5146377e89a7caac617f9782f1a02e46263d3a31 [rfkill]
2153b937bff0d345fea83b63a2e1d3138569f83d [i915]
4e6fb1bb97362e3ee4d306988b9ad6912d5fb9ae [drm_kms_helper]
f56ef2bf853e3a798f0d8d51f797622e5dc4420e [drm]
b0d157a3b5c4e017329ffc07c64623cd6ad65e95 [i2c_algo_bit]
8125374b905ef9fa8b65d98e166b008ad952f198 [i2c_core]
fc875c6e5a90e7b915e9d445d0efc859e1b2678c [video]
4b43c5006589f977e9762fdfc7ac1a92b72fca52 [output]
[root@doppio linux-2.6-tip]#
elfutils libdwfl/linux-kernel-modules.c was used as reference,
as suggested by Roland McGrath.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258582853-8579-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/header.c | 5 +++++
tools/perf/util/symbol.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++-
tools/perf/util/symbol.h | 2 ++
3 files changed, 59 insertions(+), 1 deletion(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 31731f1606b..d3d656f9a62 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -241,6 +241,11 @@ perf_header__adds_write(struct perf_header *self, int fd)
buildid_sec = &feat_sec[idx++];
+ /*
+ * Read the list of loaded modules with its build_ids
+ */
+ dsos__load_modules();
+
/* Write build-ids */
buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
if (dsos__write_buildid_table(fd) < 0)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 946ec319568..7b4cedeb302 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -9,6 +9,7 @@
#include <libelf.h>
#include <gelf.h>
#include <elf.h>
+#include <limits.h>
#include <sys/utsname.h>
enum dso_origin {
@@ -943,6 +944,50 @@ out:
return err;
}
+int sysfs__read_build_id(const char *filename, void *build_id, size_t size)
+{
+ int fd, err = -1;
+
+ if (size < BUILD_ID_SIZE)
+ goto out;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ goto out;
+
+ while (1) {
+ char bf[BUFSIZ];
+ GElf_Nhdr nhdr;
+ int namesz, descsz;
+
+ if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr))
+ break;
+
+ namesz = (nhdr.n_namesz + 3) & -4U;
+ descsz = (nhdr.n_descsz + 3) & -4U;
+ if (nhdr.n_type == NT_GNU_BUILD_ID &&
+ nhdr.n_namesz == sizeof("GNU")) {
+ if (read(fd, bf, namesz) != namesz)
+ break;
+ if (memcmp(bf, "GNU", sizeof("GNU")) == 0) {
+ if (read(fd, build_id,
+ BUILD_ID_SIZE) == BUILD_ID_SIZE) {
+ err = 0;
+ break;
+ }
+ } else if (read(fd, bf, descsz) != descsz)
+ break;
+ } else {
+ int n = namesz + descsz;
+ if (read(fd, bf, n) != n)
+ break;
+ }
+ }
+ close(fd);
+out:
+ return err;
+}
+
char dso__symtab_origin(const struct dso *self)
{
static const char origin[] = {
@@ -1218,7 +1263,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
return self;
}
-static int dsos__load_modules(void)
+int dsos__load_modules(void)
{
char *line = NULL;
size_t n;
@@ -1268,6 +1313,12 @@ static int dsos__load_modules(void)
goto out_delete_line;
}
+ snprintf(name, sizeof(name),
+ "/sys/module/%s/notes/.note.gnu.build-id", line);
+ if (sysfs__read_build_id(name, dso->build_id,
+ sizeof(dso->build_id)) == 0)
+ dso->has_build_id = true;
+
dso->origin = DSO__ORIG_KMODULE;
kernel_maps__insert(map);
dsos__add(dso);
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 546eb766d81..da7ec1af255 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -78,6 +78,7 @@ void dso__delete(struct dso *self);
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter, int modules);
+int dsos__load_modules(void);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
@@ -89,6 +90,7 @@ char dso__symtab_origin(const struct dso *self);
void dso__set_build_id(struct dso *self, void *build_id);
int filename__read_build_id(const char *filename, void *bf, size_t size);
+int sysfs__read_build_id(const char *filename, void *bf, size_t size);
bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
--
cgit v1.2.3-70-g09d2
From 2446042c93bfc6eeebfc89e88fdef2435d2bb5c4 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 18 Nov 2009 20:20:53 -0200
Subject: perf symbols: Capture the running kernel buildid too
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
[root@doppio linux-2.6-tip]# perf record -a -f sleep 3s ; perf
buildid-list | grep vmlinux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.171 MB perf.data (~7489
samples) ] 18e7cc53db62a7d35e9d6f6c9ddc23017d38ee9a vmlinux
[root@doppio linux-2.6-tip]#
Several refactorings were needed so that we can have symmetry
between dsos__load_modules() and dsos__load_kernel(), i.e. those
functions will respectively create and add to the dsos list the
loaded modules and kernel, with its buildids, but not load its
symbols. That is something the subcomands that need will have to
call dso__load_kernel_sym(), just like we do with modules with
dsos__load_module_sym()/dso__load_module_sym().
Next csets will actually use this info to stop producing bogus
results using mismatched vmlinux and .ko files.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258582853-8579-4-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-top.c | 7 +++++-
tools/perf/util/header.c | 1 +
tools/perf/util/symbol.c | 65 +++++++++++++++++++++++++++---------------------
tools/perf/util/symbol.h | 3 ++-
4 files changed, 46 insertions(+), 30 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 07b92c378ae..6d770ac7be0 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -948,7 +948,12 @@ static int symbol_filter(struct map *map, struct symbol *sym)
static int parse_symbols(void)
{
- if (dsos__load_kernel(vmlinux_name, symbol_filter, 1) <= 0)
+ struct dso *kernel = dsos__load_kernel();
+
+ if (kernel == NULL)
+ return -1;
+
+ if (dso__load_kernel_sym(kernel, symbol_filter, 1) <= 0)
return -1;
if (dump_symtab)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index d3d656f9a62..425a29ba01a 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -241,6 +241,7 @@ perf_header__adds_write(struct perf_header *self, int fd)
buildid_sec = &feat_sec[idx++];
+ dsos__load_kernel();
/*
* Read the list of loaded modules with its build_ids
*/
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 7b4cedeb302..4d75e745288 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1352,17 +1352,11 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
return err;
}
-int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter,
- int use_modules)
+int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter, int use_modules)
{
int err = -1;
- struct dso *dso = dso__new(vmlinux);
- if (dso == NULL)
- return -1;
-
- dso->short_name = "[kernel]";
- kernel_map = map__new2(0, dso);
+ kernel_map = map__new2(0, self);
if (kernel_map == NULL)
goto out_delete_dso;
@@ -1374,39 +1368,36 @@ int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter,
use_modules = 0;
}
- if (vmlinux) {
- err = dso__load_vmlinux(dso, kernel_map, vmlinux, filter);
- if (err > 0 && use_modules) {
- int syms = dsos__load_modules_sym(filter);
+ err = dso__load_vmlinux(self, kernel_map, self->name, filter);
+ if (err > 0 && use_modules) {
+ int syms = dsos__load_modules_sym(filter);
- if (syms < 0)
- pr_warning("Failed to read module symbols!"
- " Continuing...\n");
- else
- err += syms;
- }
+ if (syms < 0)
+ pr_warning("Failed to read module symbols!"
+ " Continuing...\n");
+ else
+ err += syms;
}
if (err <= 0)
err = kernel_maps__load_kallsyms(filter, use_modules);
if (err > 0) {
- struct rb_node *node = rb_first(&dso->syms);
+ struct rb_node *node = rb_first(&self->syms);
struct symbol *sym = rb_entry(node, struct symbol, rb_node);
kernel_map->start = sym->start;
- node = rb_last(&dso->syms);
+ node = rb_last(&self->syms);
sym = rb_entry(node, struct symbol, rb_node);
kernel_map->end = sym->end;
- dso->origin = DSO__ORIG_KERNEL;
+ self->origin = DSO__ORIG_KERNEL;
kernel_maps__insert(kernel_map);
/*
* Now that we have all sorted out, just set the ->end of all
* maps:
*/
kernel_maps__fixup_end();
- dsos__add(dso);
if (verbose)
kernel_maps__fprintf(stderr);
@@ -1415,7 +1406,7 @@ int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter,
return err;
out_delete_dso:
- dso__delete(dso);
+ dso__delete(self);
return -1;
}
@@ -1475,18 +1466,36 @@ size_t dsos__fprintf_buildid(FILE *fp)
return ret;
}
-int load_kernel(symbol_filter_t filter)
+struct dso *dsos__load_kernel(void)
{
- if (dsos__load_kernel(vmlinux_name, filter, modules) <= 0)
- return -1;
+ struct dso *kernel = dso__new(vmlinux_name);
+ if (kernel == NULL)
+ return NULL;
+
+ kernel->short_name = "[kernel]";
vdso = dso__new("[vdso]");
if (!vdso)
- return -1;
+ return NULL;
+
+ if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id,
+ sizeof(kernel->build_id)) == 0)
+ kernel->has_build_id = true;
+ dsos__add(kernel);
dsos__add(vdso);
- return 0;
+ return kernel;
+}
+
+int load_kernel(symbol_filter_t filter)
+{
+ struct dso *kernel = dsos__load_kernel();
+
+ if (kernel == NULL)
+ return -1;
+
+ return dso__load_kernel_sym(kernel, filter, modules);
}
void symbol__init(unsigned int priv_size)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index da7ec1af255..f0593a649c3 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -77,10 +77,10 @@ void dso__delete(struct dso *self);
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
-int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter, int modules);
int dsos__load_modules(void);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
+int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter, int modules);
void dsos__fprintf(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp);
@@ -94,6 +94,7 @@ int sysfs__read_build_id(const char *filename, void *bf, size_t size);
bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
+struct dso *dsos__load_kernel(void);
int load_kernel(symbol_filter_t filter);
void symbol__init(unsigned int priv_size);
--
cgit v1.2.3-70-g09d2
From 6671cb1674e69e2aba3d610714bdd3e97a7b51ff Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 20 Nov 2009 20:51:24 -0200
Subject: perf symbols: Remove unrelated actions from dso__load_kernel_sym
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
It should just load kernel symbols, not load the list of
modules. There are more stuff to move to other routines, but
lets do it in several steps.
End goal is to be able to defer symbol table loading till we
find a hit for that map address range. So that the kernel &
modules are handled just like all the other DSOs in the system.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258757489-5978-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 5 +++--
tools/perf/builtin-report.c | 3 ++-
tools/perf/builtin-top.c | 10 +++++++++-
tools/perf/util/data_map.c | 2 +-
tools/perf/util/symbol.c | 46 ++++++++++++++++++-------------------------
tools/perf/util/symbol.h | 7 ++++---
6 files changed, 38 insertions(+), 35 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 77d50a6d680..b6da1476ab1 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -33,6 +33,7 @@ static int input;
static int full_paths;
static int print_line;
+static bool use_modules;
static unsigned long page_size;
static unsigned long mmap_window = 32;
@@ -636,7 +637,7 @@ static int __cmd_annotate(void)
exit(0);
}
- if (load_kernel(symbol_filter) < 0) {
+ if (load_kernel(symbol_filter, use_modules) < 0) {
perror("failed to load kernel symbols");
return EXIT_FAILURE;
}
@@ -742,7 +743,7 @@ static const struct option options[] = {
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
- OPT_BOOLEAN('m', "modules", &modules,
+ OPT_BOOLEAN('m', "modules", &use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('l', "print-line", &print_line,
"print matching source lines (may be slow)"),
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 1a806d5f05c..0af48401f08 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -38,6 +38,7 @@ static char *dso_list_str, *comm_list_str, *sym_list_str,
static struct strlist *dso_list, *comm_list, *sym_list;
static int force;
+static bool use_modules;
static int full_paths;
static int show_nr_samples;
@@ -1023,7 +1024,7 @@ static const struct option options[] = {
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
- OPT_BOOLEAN('m', "modules", &modules,
+ OPT_BOOLEAN('m', "modules", &use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
"Show a column with the number of samples"),
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 6d770ac7be0..48cc1084bc3 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -953,8 +953,16 @@ static int parse_symbols(void)
if (kernel == NULL)
return -1;
+ if (dsos__load_modules() < 0)
+ pr_debug("Couldn't read the complete list of modules, "
+ "continuing...\n");
+
+ if (dsos__load_modules_sym(symbol_filter) < 0)
+ pr_warning("Failed to read module symbols, continuing...\n");
+
if (dso__load_kernel_sym(kernel, symbol_filter, 1) <= 0)
- return -1;
+ pr_debug("Couldn't read the complete list of kernel symbols, "
+ "continuing...\n");
if (dump_symtab)
dsos__fprintf(stderr);
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index 5543e7d0487..a444a2645c8 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -171,7 +171,7 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
goto out_delete;
err = -ENOMEM;
- if (load_kernel(NULL) < 0) {
+ if (load_kernel(NULL, 1) < 0) {
pr_err("failed to load kernel symbols\n");
goto out_delete;
}
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 4d75e745288..3b23c18cd36 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1230,7 +1230,7 @@ failure:
return -1;
}
-static int dsos__load_modules_sym(symbol_filter_t filter)
+int dsos__load_modules_sym(symbol_filter_t filter)
{
struct utsname uts;
char modules_path[PATH_MAX];
@@ -1352,33 +1352,18 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
return err;
}
-int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter, int use_modules)
+int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter,
+ int use_modules)
{
- int err = -1;
+ int err;
kernel_map = map__new2(0, self);
if (kernel_map == NULL)
- goto out_delete_dso;
+ return -1;
kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
- if (use_modules && dsos__load_modules() < 0) {
- pr_warning("Failed to load list of modules in use! "
- "Continuing...\n");
- use_modules = 0;
- }
-
err = dso__load_vmlinux(self, kernel_map, self->name, filter);
- if (err > 0 && use_modules) {
- int syms = dsos__load_modules_sym(filter);
-
- if (syms < 0)
- pr_warning("Failed to read module symbols!"
- " Continuing...\n");
- else
- err += syms;
- }
-
if (err <= 0)
err = kernel_maps__load_kallsyms(filter, use_modules);
@@ -1404,17 +1389,12 @@ int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter, int use_modul
}
return err;
-
-out_delete_dso:
- dso__delete(self);
- return -1;
}
LIST_HEAD(dsos);
struct dso *vdso;
const char *vmlinux_name = "vmlinux";
-int modules;
static void dsos__add(struct dso *dso)
{
@@ -1488,14 +1468,26 @@ struct dso *dsos__load_kernel(void)
return kernel;
}
-int load_kernel(symbol_filter_t filter)
+int load_kernel(symbol_filter_t filter, bool use_modules)
{
struct dso *kernel = dsos__load_kernel();
if (kernel == NULL)
return -1;
- return dso__load_kernel_sym(kernel, filter, modules);
+ if (use_modules) {
+ if (dsos__load_modules() < 0)
+ pr_warning("Failed to load list of modules in use, "
+ "continuing...\n");
+ else if (dsos__load_modules_sym(filter) < 0)
+ pr_warning("Failed to read module symbols, "
+ "continuing...\n");
+ }
+
+ if (dso__load_kernel_sym(kernel, filter, use_modules) < 0)
+ pr_warning("Failed to read kernel symbols, continuing...\n");
+
+ return 0;
}
void symbol__init(unsigned int priv_size)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index f0593a649c3..3d9d346d101 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -78,9 +78,11 @@ void dso__delete(struct dso *self);
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dsos__load_modules(void);
+int dsos__load_modules_sym(symbol_filter_t filter);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
-int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter, int modules);
+int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter,
+ int use_modules);
void dsos__fprintf(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp);
@@ -95,7 +97,7 @@ bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
struct dso *dsos__load_kernel(void);
-int load_kernel(symbol_filter_t filter);
+int load_kernel(symbol_filter_t filter, bool use_modules);
void symbol__init(unsigned int priv_size);
@@ -103,5 +105,4 @@ extern struct list_head dsos;
extern struct map *kernel_map;
extern struct dso *vdso;
extern const char *vmlinux_name;
-extern int modules;
#endif /* __PERF_SYMBOL */
--
cgit v1.2.3-70-g09d2
From fd7a346ea292074e9f6cdb5232a57c56bf98fdc9 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 20 Nov 2009 20:51:25 -0200
Subject: perf symbols: Filename__read_build_id should look at .notes section
too
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
In the kernel we have more than one notes section, so the linker
script combines all and puts them into a ".notes" combined
section. So we need to look at both sections and also traverse
them looking at multiple GElf_Nhdr entries till we find the one
we want, with the build_id.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258757489-5978-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 47 ++++++++++++++++++++++++++++++++++++++---------
1 file changed, 38 insertions(+), 9 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 3b23c18cd36..d22030828c2 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -899,13 +899,19 @@ bool dsos__read_build_ids(void)
return have_build_id;
}
+/*
+ * Align offset to 4 bytes as needed for note name and descriptor data.
+ */
+#define NOTE_ALIGN(n) (((n) + 3) & -4U)
+
int filename__read_build_id(const char *filename, void *bf, size_t size)
{
int fd, err = -1;
GElf_Ehdr ehdr;
GElf_Shdr shdr;
- Elf_Data *build_id_data;
+ Elf_Data *data;
Elf_Scn *sec;
+ void *ptr;
Elf *elf;
if (size < BUILD_ID_SIZE)
@@ -928,14 +934,37 @@ int filename__read_build_id(const char *filename, void *bf, size_t size)
sec = elf_section_by_name(elf, &ehdr, &shdr,
".note.gnu.build-id", NULL);
- if (sec == NULL)
- goto out_elf_end;
+ if (sec == NULL) {
+ sec = elf_section_by_name(elf, &ehdr, &shdr,
+ ".notes", NULL);
+ if (sec == NULL)
+ goto out_elf_end;
+ }
- build_id_data = elf_getdata(sec, NULL);
- if (build_id_data == NULL)
+ data = elf_getdata(sec, NULL);
+ if (data == NULL)
goto out_elf_end;
- memcpy(bf, build_id_data->d_buf + 16, BUILD_ID_SIZE);
- err = BUILD_ID_SIZE;
+
+ ptr = data->d_buf;
+ while (ptr < (data->d_buf + data->d_size)) {
+ GElf_Nhdr *nhdr = ptr;
+ int namesz = NOTE_ALIGN(nhdr->n_namesz),
+ descsz = NOTE_ALIGN(nhdr->n_descsz);
+ const char *name;
+
+ ptr += sizeof(*nhdr);
+ name = ptr;
+ ptr += namesz;
+ if (nhdr->n_type == NT_GNU_BUILD_ID &&
+ nhdr->n_namesz == sizeof("GNU")) {
+ if (memcmp(name, "GNU", sizeof("GNU")) == 0) {
+ memcpy(bf, ptr, BUILD_ID_SIZE);
+ err = BUILD_ID_SIZE;
+ break;
+ }
+ }
+ ptr += descsz;
+ }
out_elf_end:
elf_end(elf);
out_close:
@@ -963,8 +992,8 @@ int sysfs__read_build_id(const char *filename, void *build_id, size_t size)
if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr))
break;
- namesz = (nhdr.n_namesz + 3) & -4U;
- descsz = (nhdr.n_descsz + 3) & -4U;
+ namesz = NOTE_ALIGN(nhdr.n_namesz);
+ descsz = NOTE_ALIGN(nhdr.n_descsz);
if (nhdr.n_type == NT_GNU_BUILD_ID &&
nhdr.n_namesz == sizeof("GNU")) {
if (read(fd, bf, namesz) != namesz)
--
cgit v1.2.3-70-g09d2
From 78075caad99dc36ec6ef5826b7a5273ea14295fc Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 20 Nov 2009 20:51:26 -0200
Subject: perf symbols: Introduce dso__build_id_equal
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Will be used in more places.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258757489-5978-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index d22030828c2..c324bdf8bab 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -884,6 +884,11 @@ out_close:
return err;
}
+static bool dso__build_id_equal(const struct dso *self, u8 *build_id)
+{
+ return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0;
+}
+
bool dsos__read_build_ids(void)
{
bool have_build_id = false;
@@ -1099,8 +1104,7 @@ more:
sizeof(build_id)) < 0)
goto more;
compare_build_id:
- if (memcmp(build_id, self->build_id,
- sizeof(self->build_id)) != 0)
+ if (!dso__build_id_equal(self, build_id))
goto more;
}
--
cgit v1.2.3-70-g09d2
From c338aee853db197e1855b393e6d6cc667784537f Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 20 Nov 2009 20:51:27 -0200
Subject: perf symbols: Do lazy symtab loading for the kernel & modules too
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Just like we do with the other DSOs. This also simplifies the
kernel_maps setup process, now all that the tools need to do is
to call kernel_maps__init and the maps for the modules and
kernel will be created, then, later, when
kernel_maps__find_symbol() is used, it will also call
maps__find_symbol that already checks if the symtab was loaded,
loading it if needed.
Now if one does 'perf top --hide_kernel_symbols' we won't pay
the price of loading the (many) symbols in /proc/kallsyms or
vmlinux.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258757489-5978-4-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 8 +-
tools/perf/builtin-report.c | 6 +-
tools/perf/builtin-top.c | 35 ++-------
tools/perf/util/data_map.c | 4 +-
tools/perf/util/event.h | 3 +
tools/perf/util/header.c | 6 +-
tools/perf/util/map.c | 23 ++++++
tools/perf/util/symbol.c | 173 ++++++++++++++----------------------------
tools/perf/util/symbol.h | 9 +--
tools/perf/util/thread.h | 3 +-
10 files changed, 109 insertions(+), 161 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index b6da1476ab1..203152729a6 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -157,7 +157,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (event->header.misc & PERF_RECORD_MISC_KERNEL) {
level = 'k';
- sym = kernel_maps__find_symbol(ip, &map);
+ sym = kernel_maps__find_symbol(ip, &map, symbol_filter);
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
} else if (event->header.misc & PERF_RECORD_MISC_USER) {
@@ -637,9 +637,9 @@ static int __cmd_annotate(void)
exit(0);
}
- if (load_kernel(symbol_filter, use_modules) < 0) {
- perror("failed to load kernel symbols");
- return EXIT_FAILURE;
+ if (kernel_maps__init(use_modules) < 0) {
+ pr_err("failed to create kernel maps for symbol resolution\b");
+ return -1;
}
remap:
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 0af48401f08..0d39e805be2 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -449,7 +449,7 @@ got_map:
* trick of looking in the whole kernel symbol list.
*/
if ((long long)ip < 0)
- return kernel_maps__find_symbol(ip, mapp);
+ return kernel_maps__find_symbol(ip, mapp, NULL);
}
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
@@ -496,7 +496,7 @@ static struct symbol **resolve_callchain(struct thread *thread, struct map *map,
case PERF_CONTEXT_HV:
break;
case PERF_CONTEXT_KERNEL:
- sym = kernel_maps__find_symbol(ip, &map);
+ sym = kernel_maps__find_symbol(ip, &map, NULL);
break;
default:
sym = resolve_symbol(thread, &map, &ip);
@@ -716,7 +716,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (cpumode == PERF_RECORD_MISC_KERNEL) {
level = 'k';
- sym = kernel_maps__find_symbol(ip, &map);
+ sym = kernel_maps__find_symbol(ip, &map, NULL);
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
} else if (cpumode == PERF_RECORD_MISC_USER) {
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 48cc1084bc3..ea49c2e9dda 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -830,6 +830,8 @@ static void handle_keypress(int c)
case 'q':
case 'Q':
printf("exiting.\n");
+ if (dump_symtab)
+ dsos__fprintf(stderr);
exit(0);
case 's':
prompt_symbol(&sym_filter_entry, "Enter details symbol");
@@ -946,30 +948,6 @@ static int symbol_filter(struct map *map, struct symbol *sym)
return 0;
}
-static int parse_symbols(void)
-{
- struct dso *kernel = dsos__load_kernel();
-
- if (kernel == NULL)
- return -1;
-
- if (dsos__load_modules() < 0)
- pr_debug("Couldn't read the complete list of modules, "
- "continuing...\n");
-
- if (dsos__load_modules_sym(symbol_filter) < 0)
- pr_warning("Failed to read module symbols, continuing...\n");
-
- if (dso__load_kernel_sym(kernel, symbol_filter, 1) <= 0)
- pr_debug("Couldn't read the complete list of kernel symbols, "
- "continuing...\n");
-
- if (dump_symtab)
- dsos__fprintf(stderr);
-
- return 0;
-}
-
static void event__process_sample(const event_t *self, int counter)
{
u64 ip = self->ip.ip;
@@ -1012,7 +990,7 @@ static void event__process_sample(const event_t *self, int counter)
if (hide_kernel_symbols)
return;
- sym = kernel_maps__find_symbol(ip, &map);
+ sym = kernel_maps__find_symbol(ip, &map, symbol_filter);
if (sym == NULL)
return;
break;
@@ -1339,7 +1317,7 @@ static const struct option options[] = {
int cmd_top(int argc, const char **argv, const char *prefix __used)
{
- int counter;
+ int counter, err;
page_size = sysconf(_SC_PAGE_SIZE);
@@ -1363,10 +1341,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (delay_secs < 1)
delay_secs = 1;
- parse_symbols();
+ err = kernel_maps__init(true);
+ if (err < 0)
+ return err;
parse_source(sym_filter_entry);
-
/*
* User specified count overrides default frequency.
*/
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index a444a2645c8..e7b6c2bea3d 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -171,8 +171,8 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
goto out_delete;
err = -ENOMEM;
- if (load_kernel(NULL, 1) < 0) {
- pr_err("failed to load kernel symbols\n");
+ if (kernel_maps__init(true) < 0) {
+ pr_err("failed to setup the kernel maps to resolve symbols\n");
goto out_delete;
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 34c6fcb82d9..f1e39261265 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -115,10 +115,13 @@ typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
struct dso *dso);
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
+void map__delete(struct map *self);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
struct symbol *map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter);
+void map__fixup_start(struct map *self);
+void map__fixup_end(struct map *self);
int event__synthesize_thread(pid_t pid, int (*process)(event_t *event));
void event__synthesize_threads(int (*process)(event_t *event));
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index d5c81ebc0a8..ac3410b8e9e 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -253,11 +253,11 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
buildid_sec = &feat_sec[idx++];
- dsos__load_kernel();
/*
- * Read the list of loaded modules with its build_ids
+ * Read the kernel buildid nad the list of loaded modules with
+ * its build_ids:
*/
- dsos__load_modules();
+ kernel_maps__init(true);
/* Write build-ids */
buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 94ca95073c4..09412321a80 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -75,6 +75,29 @@ out_delete:
return NULL;
}
+void map__delete(struct map *self)
+{
+ free(self);
+}
+
+void map__fixup_start(struct map *self)
+{
+ struct rb_node *nd = rb_first(&self->dso->syms);
+ if (nd != NULL) {
+ struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
+ self->start = sym->start;
+ }
+}
+
+void map__fixup_end(struct map *self)
+{
+ struct rb_node *nd = rb_last(&self->dso->syms);
+ if (nd != NULL) {
+ struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
+ self->end = sym->end;
+ }
+}
+
#define DSO__DELETED "(deleted)"
struct symbol *
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index c324bdf8bab..cb086cbe6b1 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -27,6 +27,8 @@ static void dsos__add(struct dso *dso);
static struct dso *dsos__find(const char *name);
static struct map *map__new2(u64 start, struct dso *dso);
static void kernel_maps__insert(struct map *map);
+static int dso__load_kernel_sym(struct dso *self, struct map *map,
+ symbol_filter_t filter);
unsigned int symbol__priv_size;
static struct rb_root kernel_maps;
@@ -69,12 +71,6 @@ static void kernel_maps__fixup_end(void)
curr = rb_entry(nd, struct map, rb_node);
prev->end = curr->start - 1;
}
-
- nd = rb_last(&curr->dso->syms);
- if (nd) {
- struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
- curr->end = sym->end;
- }
}
static struct symbol *symbol__new(u64 start, u64 len, const char *name)
@@ -324,7 +320,7 @@ out_failure:
* kernel range is broken in several maps, named [kernel].N, as we don't have
* the original ELF section names vmlinux have.
*/
-static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
+static int kernel_maps__split_kallsyms(symbol_filter_t filter)
{
struct map *map = kernel_map;
struct symbol *pos;
@@ -340,9 +336,6 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
module = strchr(pos->name, '\t');
if (module) {
- if (!use_modules)
- goto delete_symbol;
-
*module++ = '\0';
if (strcmp(map->dso->name, module)) {
@@ -382,7 +375,6 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules)
}
if (filter && filter(map, pos)) {
-delete_symbol:
rb_erase(&pos->rb_node, &kernel_map->dso->syms);
symbol__delete(pos);
} else {
@@ -398,17 +390,18 @@ delete_symbol:
}
-static int kernel_maps__load_kallsyms(symbol_filter_t filter, int use_modules)
+static int kernel_maps__load_kallsyms(symbol_filter_t filter)
{
if (kernel_maps__load_all_kallsyms())
return -1;
dso__fixup_sym_end(kernel_map->dso);
+ kernel_map->dso->origin = DSO__ORIG_KERNEL;
- return kernel_maps__split_kallsyms(filter, use_modules);
+ return kernel_maps__split_kallsyms(filter);
}
-static size_t kernel_maps__fprintf(FILE *fp)
+size_t kernel_maps__fprintf(FILE *fp)
{
size_t printed = fprintf(fp, "Kernel maps:\n");
struct rb_node *nd;
@@ -1042,13 +1035,17 @@ char dso__symtab_origin(const struct dso *self)
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
{
int size = PATH_MAX;
- char *name = malloc(size);
+ char *name;
u8 build_id[BUILD_ID_SIZE];
int ret = -1;
int fd;
self->loaded = 1;
+ if (self->kernel)
+ return dso__load_kernel_sym(self, map, filter);
+
+ name = malloc(size);
if (!name)
return -1;
@@ -1139,7 +1136,8 @@ static void kernel_maps__insert(struct map *map)
maps__insert(&kernel_maps, map);
}
-struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp)
+struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp,
+ symbol_filter_t filter)
{
struct map *map = maps__find(&kernel_maps, ip);
@@ -1148,7 +1146,7 @@ struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp)
if (map) {
ip = map->map_ip(map, ip);
- return map->dso->find_symbol(map->dso, ip);
+ return map__find_symbol(map, ip, filter);
}
return NULL;
@@ -1168,28 +1166,9 @@ struct map *kernel_maps__find_by_dso_name(const char *name)
return NULL;
}
-static int dso__load_module_sym(struct dso *self, struct map *map,
- symbol_filter_t filter)
-{
- int err = 0, fd = open(self->long_name, O_RDONLY);
-
- self->loaded = 1;
-
- if (fd < 0) {
- pr_err("%s: cannot open %s\n", __func__, self->long_name);
- return err;
- }
-
- err = dso__load_sym(self, map, self->long_name, fd, filter, 0, 1);
- close(fd);
-
- return err;
-}
-
-static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
+static int dsos__set_modules_path_dir(char *dirname)
{
struct dirent *dent;
- int nr_symbols = 0, err;
DIR *dir = opendir(dirname);
if (!dir) {
@@ -1207,14 +1186,12 @@ static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
snprintf(path, sizeof(path), "%s/%s",
dirname, dent->d_name);
- err = dsos__load_modules_sym_dir(path, filter);
- if (err < 0)
+ if (dsos__set_modules_path_dir(path) < 0)
goto failure;
} else {
char *dot = strrchr(dent->d_name, '.'),
dso_name[PATH_MAX];
struct map *map;
- struct rb_node *last;
char *long_name;
if (dot == NULL || strcmp(dot, ".ko"))
@@ -1234,36 +1211,16 @@ static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter)
if (long_name == NULL)
goto failure;
dso__set_long_name(map->dso, long_name);
- dso__set_basename(map->dso);
-
- err = dso__load_module_sym(map->dso, map, filter);
- if (err < 0)
- goto failure;
- last = rb_last(&map->dso->syms);
- if (last) {
- struct symbol *sym;
- /*
- * We do this here as well, even having the
- * symbol size found in the symtab because
- * misannotated ASM symbols may have the size
- * set to zero.
- */
- dso__fixup_sym_end(map->dso);
-
- sym = rb_entry(last, struct symbol, rb_node);
- map->end = map->start + sym->end;
- }
}
- nr_symbols += err;
}
- return nr_symbols;
+ return 0;
failure:
closedir(dir);
return -1;
}
-int dsos__load_modules_sym(symbol_filter_t filter)
+static int dsos__set_modules_path(void)
{
struct utsname uts;
char modules_path[PATH_MAX];
@@ -1274,7 +1231,7 @@ int dsos__load_modules_sym(symbol_filter_t filter)
snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel",
uts.release);
- return dsos__load_modules_sym_dir(modules_path, filter);
+ return dsos__set_modules_path_dir(modules_path);
}
/*
@@ -1296,7 +1253,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
return self;
}
-int dsos__load_modules(void)
+static int kernel_maps__create_module_maps(void)
{
char *line = NULL;
size_t n;
@@ -1360,7 +1317,13 @@ int dsos__load_modules(void)
free(line);
fclose(file);
- return 0;
+ /*
+ * Now that we have all sorted out, just set the ->end of all
+ * maps:
+ */
+ kernel_maps__fixup_end();
+
+ return dsos__set_modules_path();
out_delete_line:
free(line);
@@ -1385,40 +1348,17 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
return err;
}
-int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter,
- int use_modules)
+static int dso__load_kernel_sym(struct dso *self, struct map *map,
+ symbol_filter_t filter)
{
- int err;
+ int err = dso__load_vmlinux(self, map, self->name, filter);
- kernel_map = map__new2(0, self);
- if (kernel_map == NULL)
- return -1;
-
- kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
-
- err = dso__load_vmlinux(self, kernel_map, self->name, filter);
if (err <= 0)
- err = kernel_maps__load_kallsyms(filter, use_modules);
+ err = kernel_maps__load_kallsyms(filter);
if (err > 0) {
- struct rb_node *node = rb_first(&self->syms);
- struct symbol *sym = rb_entry(node, struct symbol, rb_node);
-
- kernel_map->start = sym->start;
- node = rb_last(&self->syms);
- sym = rb_entry(node, struct symbol, rb_node);
- kernel_map->end = sym->end;
-
- self->origin = DSO__ORIG_KERNEL;
- kernel_maps__insert(kernel_map);
- /*
- * Now that we have all sorted out, just set the ->end of all
- * maps:
- */
- kernel_maps__fixup_end();
-
- if (verbose)
- kernel_maps__fprintf(stderr);
+ map__fixup_start(map);
+ map__fixup_end(map);
}
return err;
@@ -1479,46 +1419,51 @@ size_t dsos__fprintf_buildid(FILE *fp)
return ret;
}
-struct dso *dsos__load_kernel(void)
+static int kernel_maps__create_kernel_map(void)
{
struct dso *kernel = dso__new(vmlinux_name);
if (kernel == NULL)
- return NULL;
+ return -1;
+
+ kernel_map = map__new2(0, kernel);
+ if (kernel_map == NULL)
+ goto out_delete_kernel_dso;
+
+ kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
kernel->short_name = "[kernel]";
+ kernel->kernel = 1;
vdso = dso__new("[vdso]");
- if (!vdso)
- return NULL;
+ if (vdso == NULL)
+ goto out_delete_kernel_map;
if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id,
sizeof(kernel->build_id)) == 0)
kernel->has_build_id = true;
+ kernel_maps__insert(kernel_map);
dsos__add(kernel);
dsos__add(vdso);
- return kernel;
+ return 0;
+
+out_delete_kernel_map:
+ map__delete(kernel_map);
+ kernel_map = NULL;
+out_delete_kernel_dso:
+ dso__delete(kernel);
+ return -1;
}
-int load_kernel(symbol_filter_t filter, bool use_modules)
+int kernel_maps__init(bool use_modules)
{
- struct dso *kernel = dsos__load_kernel();
-
- if (kernel == NULL)
+ if (kernel_maps__create_kernel_map() < 0)
return -1;
- if (use_modules) {
- if (dsos__load_modules() < 0)
- pr_warning("Failed to load list of modules in use, "
- "continuing...\n");
- else if (dsos__load_modules_sym(filter) < 0)
- pr_warning("Failed to read module symbols, "
- "continuing...\n");
- }
-
- if (dso__load_kernel_sym(kernel, filter, use_modules) < 0)
- pr_warning("Failed to read kernel symbols, continuing...\n");
+ if (use_modules && kernel_maps__create_module_maps() < 0)
+ pr_warning("Failed to load list of modules in use, "
+ "continuing...\n");
return 0;
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 3d9d346d101..7a129047c47 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -64,6 +64,7 @@ struct dso {
u8 slen_calculated:1;
u8 loaded:1;
u8 has_build_id:1;
+ u8 kernel:1;
unsigned char origin;
u8 build_id[BUILD_ID_SIZE];
u16 long_name_len;
@@ -77,12 +78,8 @@ void dso__delete(struct dso *self);
struct symbol *dso__find_symbol(struct dso *self, u64 ip);
-int dsos__load_modules(void);
-int dsos__load_modules_sym(symbol_filter_t filter);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
-int dso__load_kernel_sym(struct dso *self, symbol_filter_t filter,
- int use_modules);
void dsos__fprintf(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp);
@@ -96,8 +93,8 @@ int sysfs__read_build_id(const char *filename, void *bf, size_t size);
bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
-struct dso *dsos__load_kernel(void);
-int load_kernel(symbol_filter_t filter, bool use_modules);
+int kernel_maps__init(bool use_modules);
+size_t kernel_maps__fprintf(FILE *fp);
void symbol__init(unsigned int priv_size);
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 53addd77ce8..e4b8d437725 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -26,7 +26,8 @@ size_t threads__fprintf(FILE *fp);
void maps__insert(struct rb_root *maps, struct map *map);
struct map *maps__find(struct rb_root *maps, u64 ip);
-struct symbol *kernel_maps__find_symbol(const u64 ip, struct map **mapp);
+struct symbol *kernel_maps__find_symbol(const u64 ip, struct map **mapp,
+ symbol_filter_t filter);
struct map *kernel_maps__find_by_dso_name(const char *name);
static inline struct map *thread__find_map(struct thread *self, u64 ip)
--
cgit v1.2.3-70-g09d2
From fbd733b815a5a57d7eb0d904edc49d18fd12df5c Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 20 Nov 2009 20:51:28 -0200
Subject: perf symbols: Check vmlinux buildid
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
E.g.:
[root@doppio linux-2.6-tip]# perf top -v --vmlinux
../build/tip/vmlinux > /dev/null build_id in vmlinux is
e96699725a47413a50c231864a8e7a8ced40a31b while expected is
18e7cc53db62a7d35e9d6f6c9ddc23017d38ee9a, ignoring it
I.e. perf top was told to use a vmlinux file that is not the one
currently running on the machine, it ignores it and falls back
to using /proc/kallsyms.
This solves many, at first, mysterious results when people have
a stale vmlinux file while keeping the default of trying to use
the vmlinux file in the current directory in things like 'perf
annotate' where the DWARF info is required and thus we can't use
just /proc/kallsyms.
Modules buildids are already being checked as of the previous
changeset in this series, because we are using the default
dso__load routine, that will look at a series of places looking
for the best file with a matching buildid, starting in the
-debuginfo directories.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258757489-5978-5-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 28 ++++++++++++++++++++++++++--
1 file changed, 26 insertions(+), 2 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index cb086cbe6b1..9cf6dbcd158 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1334,13 +1334,37 @@ out_failure:
static int dso__load_vmlinux(struct dso *self, struct map *map,
const char *vmlinux, symbol_filter_t filter)
{
- int err, fd = open(vmlinux, O_RDONLY);
+ int err = -1, fd;
- self->loaded = 1;
+ if (self->has_build_id) {
+ u8 build_id[BUILD_ID_SIZE];
+
+ if (filename__read_build_id(vmlinux, build_id,
+ sizeof(build_id)) < 0) {
+ pr_debug("No build_id in %s, ignoring it\n", vmlinux);
+ return -1;
+ }
+ if (!dso__build_id_equal(self, build_id)) {
+ char expected_build_id[BUILD_ID_SIZE * 2 + 1],
+ vmlinux_build_id[BUILD_ID_SIZE * 2 + 1];
+
+ build_id__sprintf(self->build_id,
+ sizeof(self->build_id),
+ expected_build_id);
+ build_id__sprintf(build_id, sizeof(build_id),
+ vmlinux_build_id);
+ pr_debug("build_id in %s is %s while expected is %s, "
+ "ignoring it\n", vmlinux, vmlinux_build_id,
+ expected_build_id);
+ return -1;
+ }
+ }
+ fd = open(vmlinux, O_RDONLY);
if (fd < 0)
return -1;
+ self->loaded = 1;
err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0);
close(fd);
--
cgit v1.2.3-70-g09d2
From ef6ae724253429ac70d81e65d052f6a346d330bd Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 20 Nov 2009 20:51:29 -0200
Subject: perf symbols: Change the kernel DSO name if it comes from kallsyms
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
So that the user have a clearer indication about the source of
the symbols, as we only state buildid mismatches in verbose
mode, because 'perf top' would overwrite such warning anyway.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258757489-5978-6-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 9cf6dbcd158..48f87f065a2 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -108,6 +108,8 @@ static size_t symbol__fprintf(struct symbol *self, FILE *fp)
static void dso__set_long_name(struct dso *self, char *name)
{
+ if (name == NULL)
+ return;
self->long_name = name;
self->long_name_len = strlen(name);
}
@@ -1377,8 +1379,11 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
{
int err = dso__load_vmlinux(self, map, self->name, filter);
- if (err <= 0)
+ if (err <= 0) {
err = kernel_maps__load_kallsyms(filter);
+ if (err > 0)
+ dso__set_long_name(self, strdup("[kernel.kallsyms]"));
+ }
if (err > 0) {
map__fixup_start(map);
--
cgit v1.2.3-70-g09d2
From 90c83218c32d7c474da810cd3c9973a43ecbcb9b Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Sat, 21 Nov 2009 14:31:24 -0200
Subject: perf symbols: Fixup kernel_maps__fixup_end end map
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We better call this routine after both the kernel and modules
are loaded, because as it was if there weren't modules it would not
be called, resulting in kernel_map->end remaining at zero, so no
map would be found and consequently the kernel symtab wouldn't
get loaded, i.e. no kernel symbols would be resolved.
Also this fixes another case, that is when we _have_ modules,
but the last map would have its ->end address not set before we
loaded its symbols, which would never happen because ->end was
not set.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258821086-11521-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 48f87f065a2..e161a51c9fe 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -71,6 +71,12 @@ static void kernel_maps__fixup_end(void)
curr = rb_entry(nd, struct map, rb_node);
prev->end = curr->start - 1;
}
+
+ /*
+ * We still haven't the actual symbols, so guess the
+ * last map final address.
+ */
+ curr->end = ~0UL;
}
static struct symbol *symbol__new(u64 start, u64 len, const char *name)
@@ -1319,12 +1325,6 @@ static int kernel_maps__create_module_maps(void)
free(line);
fclose(file);
- /*
- * Now that we have all sorted out, just set the ->end of all
- * maps:
- */
- kernel_maps__fixup_end();
-
return dsos__set_modules_path();
out_delete_line:
@@ -1493,7 +1493,10 @@ int kernel_maps__init(bool use_modules)
if (use_modules && kernel_maps__create_module_maps() < 0)
pr_warning("Failed to load list of modules in use, "
"continuing...\n");
-
+ /*
+ * Now that we have all the maps created, just set the ->end of them:
+ */
+ kernel_maps__fixup_end();
return 0;
}
--
cgit v1.2.3-70-g09d2
From c12e15e71d4b32da045e798ffd21cbb6197d1c65 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Sat, 21 Nov 2009 14:31:25 -0200
Subject: perf symbols: Old versions of elf.h don't have NT_GNU_BUILD_ID
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258821086-11521-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 4 ++++
1 file changed, 4 insertions(+)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index e161a51c9fe..86ec6c720f0 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -12,6 +12,10 @@
#include <limits.h>
#include <sys/utsname.h>
+#ifndef NT_GNU_BUILD_ID
+#define NT_GNU_BUILD_ID 3
+#endif
+
enum dso_origin {
DSO__ORIG_KERNEL = 0,
DSO__ORIG_JAVA_JIT,
--
cgit v1.2.3-70-g09d2
From e57cfcdac6badd846a1cd831de54a1359c2d1eea Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@cs.helsinki.fi>
Date: Sun, 22 Nov 2009 12:29:44 +0200
Subject: perf symbols: Fix ELF header errors during "perf kmem record"
The write_event() function in builtin-record.c writes out all
mmap()'d DSOs including non-ELF files like GNOME resource files
and such.
Therefore, check for ELF_K_ELF in filename__read_build_id()
before attempting to read the ELF header with gelf_getehdr().
Fixes the following error messages when running "perf kmem
record":
penberg@penberg-laptop:~/src/linux/tools/perf$ perf kmem record
^C[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.753 MB perf.data (~32885 samples) ]
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
filename__read_build_id: cannot get elf header.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <1258885784-11709-1-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 5 +++++
1 file changed, 5 insertions(+)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 86ec6c720f0..f56158fb4dc 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -921,6 +921,7 @@ int filename__read_build_id(const char *filename, void *bf, size_t size)
GElf_Shdr shdr;
Elf_Data *data;
Elf_Scn *sec;
+ Elf_Kind ek;
void *ptr;
Elf *elf;
@@ -937,6 +938,10 @@ int filename__read_build_id(const char *filename, void *bf, size_t size)
goto out_close;
}
+ ek = elf_kind(elf);
+ if (ek != ELF_K_ELF)
+ goto out_elf_end;
+
if (gelf_getehdr(elf, &ehdr) == NULL) {
pr_err("%s: cannot get elf header.\n", __func__);
goto out_elf_end;
--
cgit v1.2.3-70-g09d2
From 87f8ea4cd3680ef7f4da4391aed97abb25eae333 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Sun, 22 Nov 2009 13:21:41 -0200
Subject: perf symbols: Show messages about module loading only if verbose >= 1
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Suggested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258903301-20584-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index f56158fb4dc..74b5b8a1695 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1189,7 +1189,7 @@ static int dsos__set_modules_path_dir(char *dirname)
DIR *dir = opendir(dirname);
if (!dir) {
- pr_err("%s: cannot open %s dir\n", __func__, dirname);
+ pr_debug("%s: cannot open %s dir\n", __func__, dirname);
return -1;
}
@@ -1500,8 +1500,8 @@ int kernel_maps__init(bool use_modules)
return -1;
if (use_modules && kernel_maps__create_module_maps() < 0)
- pr_warning("Failed to load list of modules in use, "
- "continuing...\n");
+ pr_debug("Failed to load list of modules in use, "
+ "continuing...\n");
/*
* Now that we have all the maps created, just set the ->end of them:
*/
--
cgit v1.2.3-70-g09d2
From cc612d8199089413719397c9d92e5823da578eac Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 23 Nov 2009 16:39:10 -0200
Subject: perf symbols: Look for vmlinux in more places
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Now that we can check the buildid to see if it really matches,
this can be done safely:
vmlinux
/boot/vmlinux
/boot/vmlinux-<uts.release>
/lib/modules/<uts.release>/build/vmlinux
/usr/lib/debug/lib/modules/%s/vmlinux
More can be added - if you know about distros that put the
vmlinux somewhere else please let us know.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259001550-8194-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 3 +-
tools/perf/builtin-kmem.c | 2 +-
tools/perf/builtin-report.c | 6 ++-
tools/perf/builtin-sched.c | 3 +-
tools/perf/builtin-top.c | 3 +-
tools/perf/builtin-trace.c | 3 +-
tools/perf/util/data_map.c | 4 +-
tools/perf/util/data_map.h | 2 +
tools/perf/util/header.c | 2 +-
tools/perf/util/symbol.c | 113 +++++++++++++++++++++++++++++++++++++-----
tools/perf/util/symbol.h | 4 +-
11 files changed, 122 insertions(+), 23 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 203152729a6..6b13a1ecf1e 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -37,6 +37,7 @@ static bool use_modules;
static unsigned long page_size;
static unsigned long mmap_window = 32;
+const char *vmlinux_name;
struct sym_hist {
u64 sum;
@@ -637,7 +638,7 @@ static int __cmd_annotate(void)
exit(0);
}
- if (kernel_maps__init(use_modules) < 0) {
+ if (kernel_maps__init(vmlinux_name, true, use_modules) < 0) {
pr_err("failed to create kernel maps for symbol resolution\b");
return -1;
}
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 4145049e7bf..5d8aeae5000 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -291,7 +291,7 @@ static int read_events(void)
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, 0, 0,
+ return mmap_dispatch_perf_file(&header, input_name, NULL, false, 0, 0,
&cwdlen, &cwd);
}
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 7e690f73b51..fe474b7f8ad 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -52,6 +52,7 @@ static char *pretty_printing_style = default_pretty_printing_style;
static int exclude_other = 1;
static char callchain_default_opt[] = "fractal,0.5";
+const char *vmlinux_name;
static char *cwd;
static int cwdlen;
@@ -925,8 +926,9 @@ static int __cmd_report(void)
register_perf_file_handler(&file_handler);
- ret = mmap_dispatch_perf_file(&header, input_name, force, full_paths,
- &cwdlen, &cwd);
+ ret = mmap_dispatch_perf_file(&header, input_name, vmlinux_name,
+ !vmlinux_name, force,
+ full_paths, &cwdlen, &cwd);
if (ret)
return ret;
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index df44b756cec..260f57a72ee 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1718,7 +1718,8 @@ static int read_events(void)
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, 0, 0, &cwdlen, &cwd);
+ return mmap_dispatch_perf_file(&header, input_name, NULL, false, 0, 0,
+ &cwdlen, &cwd);
}
static void print_bad_events(void)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ea49c2e9dda..eef9caab6ee 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -79,6 +79,7 @@ static int dump_symtab = 0;
static bool hide_kernel_symbols = false;
static bool hide_user_symbols = false;
static struct winsize winsize;
+const char *vmlinux_name;
static const char *graph_line =
"_____________________________________________________________________"
"_____________________________________________________________________";
@@ -1341,7 +1342,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (delay_secs < 1)
delay_secs = 1;
- err = kernel_maps__init(true);
+ err = kernel_maps__init(vmlinux_name, !vmlinux_name, true);
if (err < 0)
return err;
parse_source(sym_filter_entry);
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index d042d656c56..b71198e5dc1 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -131,7 +131,8 @@ static int __cmd_trace(void)
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, 0, 0, &cwdlen, &cwd);
+ return mmap_dispatch_perf_file(&header, input_name, NULL, false,
+ 0, 0, &cwdlen, &cwd);
}
static const char * const annotate_usage[] = {
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index e7b6c2bea3d..f318d19b256 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -101,6 +101,8 @@ out:
int mmap_dispatch_perf_file(struct perf_header **pheader,
const char *input_name,
+ const char *vmlinux_name,
+ bool try_vmlinux_path,
int force,
int full_paths,
int *cwdlen,
@@ -171,7 +173,7 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
goto out_delete;
err = -ENOMEM;
- if (kernel_maps__init(true) < 0) {
+ if (kernel_maps__init(vmlinux_name, try_vmlinux_path, true) < 0) {
pr_err("failed to setup the kernel maps to resolve symbols\n");
goto out_delete;
}
diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index ae036ecd762..3f0d21b3819 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -23,6 +23,8 @@ struct perf_file_handler {
void register_perf_file_handler(struct perf_file_handler *handler);
int mmap_dispatch_perf_file(struct perf_header **pheader,
const char *input_name,
+ const char *vmlinux_name,
+ bool try_vmlinux_path,
int force,
int full_paths,
int *cwdlen,
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index ac3410b8e9e..1332f8ec04a 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -257,7 +257,7 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
* Read the kernel buildid nad the list of loaded modules with
* its build_ids:
*/
- kernel_maps__init(true);
+ kernel_maps__init(NULL, false, true);
/* Write build-ids */
buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 74b5b8a1695..44d81d5ae8c 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -34,6 +34,8 @@ static void kernel_maps__insert(struct map *map);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
symbol_filter_t filter);
unsigned int symbol__priv_size;
+static int vmlinux_path__nr_entries;
+static char **vmlinux_path;
static struct rb_root kernel_maps;
@@ -1386,15 +1388,43 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
static int dso__load_kernel_sym(struct dso *self, struct map *map,
symbol_filter_t filter)
{
- int err = dso__load_vmlinux(self, map, self->name, filter);
+ int err;
+ bool is_kallsyms;
+
+ if (vmlinux_path != NULL) {
+ int i;
+ pr_debug("Looking at the vmlinux_path (%d entries long)\n",
+ vmlinux_path__nr_entries);
+ for (i = 0; i < vmlinux_path__nr_entries; ++i) {
+ err = dso__load_vmlinux(self, map, vmlinux_path[i],
+ filter);
+ if (err > 0) {
+ pr_debug("Using %s for symbols\n",
+ vmlinux_path[i]);
+ dso__set_long_name(self,
+ strdup(vmlinux_path[i]));
+ goto out_fixup;
+ }
+ }
+ }
+
+ is_kallsyms = self->long_name[0] == '[';
+ if (is_kallsyms)
+ goto do_kallsyms;
+ err = dso__load_vmlinux(self, map, self->long_name, filter);
if (err <= 0) {
+ pr_info("The file %s cannot be used, "
+ "trying to use /proc/kallsyms...", self->long_name);
+ sleep(2);
+do_kallsyms:
err = kernel_maps__load_kallsyms(filter);
- if (err > 0)
+ if (err > 0 && !is_kallsyms)
dso__set_long_name(self, strdup("[kernel.kallsyms]"));
}
if (err > 0) {
+out_fixup:
map__fixup_start(map);
map__fixup_end(map);
}
@@ -1403,9 +1433,7 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
}
LIST_HEAD(dsos);
-struct dso *vdso;
-
-const char *vmlinux_name = "vmlinux";
+struct dso *vdso;
static void dsos__add(struct dso *dso)
{
@@ -1457,9 +1485,9 @@ size_t dsos__fprintf_buildid(FILE *fp)
return ret;
}
-static int kernel_maps__create_kernel_map(void)
+static int kernel_maps__create_kernel_map(const char *vmlinux_name)
{
- struct dso *kernel = dso__new(vmlinux_name);
+ struct dso *kernel = dso__new(vmlinux_name ?: "[kernel.kallsyms]");
if (kernel == NULL)
return -1;
@@ -1468,10 +1496,10 @@ static int kernel_maps__create_kernel_map(void)
if (kernel_map == NULL)
goto out_delete_kernel_dso;
- kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
+ kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
+ kernel->short_name = "[kernel]";
+ kernel->kernel = 1;
- kernel->short_name = "[kernel]";
- kernel->kernel = 1;
vdso = dso__new("[vdso]");
if (vdso == NULL)
goto out_delete_kernel_map;
@@ -1494,11 +1522,72 @@ out_delete_kernel_dso:
return -1;
}
-int kernel_maps__init(bool use_modules)
+static void vmlinux_path__exit(void)
+{
+ while (--vmlinux_path__nr_entries >= 0) {
+ free(vmlinux_path[vmlinux_path__nr_entries]);
+ vmlinux_path[vmlinux_path__nr_entries] = NULL;
+ }
+
+ free(vmlinux_path);
+ vmlinux_path = NULL;
+}
+
+static int vmlinux_path__init(void)
+{
+ struct utsname uts;
+ char bf[PATH_MAX];
+
+ if (uname(&uts) < 0)
+ return -1;
+
+ vmlinux_path = malloc(sizeof(char *) * 5);
+ if (vmlinux_path == NULL)
+ return -1;
+
+ vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux");
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux");
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release);
+ vmlinux_path[vmlinux_path__nr_entries] = strdup(bf);
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release);
+ vmlinux_path[vmlinux_path__nr_entries] = strdup(bf);
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux",
+ uts.release);
+ vmlinux_path[vmlinux_path__nr_entries] = strdup(bf);
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+
+ return 0;
+
+out_fail:
+ vmlinux_path__exit();
+ return -1;
+}
+
+int kernel_maps__init(const char *vmlinux_name, bool try_vmlinux_path,
+ bool use_modules)
{
- if (kernel_maps__create_kernel_map() < 0)
+ if (try_vmlinux_path && vmlinux_path__init() < 0)
return -1;
+ if (kernel_maps__create_kernel_map(vmlinux_name) < 0) {
+ vmlinux_path__exit();
+ return -1;
+ }
+
if (use_modules && kernel_maps__create_module_maps() < 0)
pr_debug("Failed to load list of modules in use, "
"continuing...\n");
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 7a129047c47..8c4d026e067 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -93,7 +93,8 @@ int sysfs__read_build_id(const char *filename, void *bf, size_t size);
bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
-int kernel_maps__init(bool use_modules);
+int kernel_maps__init(const char *vmlinux_name, bool try_vmlinux_path,
+ bool use_modules);
size_t kernel_maps__fprintf(FILE *fp);
void symbol__init(unsigned int priv_size);
@@ -101,5 +102,4 @@ void symbol__init(unsigned int priv_size);
extern struct list_head dsos;
extern struct map *kernel_map;
extern struct dso *vdso;
-extern const char *vmlinux_name;
#endif /* __PERF_SYMBOL */
--
cgit v1.2.3-70-g09d2
From b32d133aec5dc882cf783a293f393bfb3f4379e1 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 24 Nov 2009 12:05:15 -0200
Subject: perf symbols: Simplify symbol machinery setup
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
And also express its configuration toggles via a struct.
Now all one has to do is to call symbol__init(NULL) if the
defaults are OK, or pass a struct symbol_conf pointer with the
desired configuration.
If a tool uses kernel_maps__find_symbol() to look at the kernel
and modules mappings for a symbol but didn't call symbol__init()
first, that will generate a one time warning too, alerting the
subcommand developer that symbol__init() must be called.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259071517-3242-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 20 ++++++++++----------
tools/perf/builtin-kmem.c | 2 +-
tools/perf/builtin-report.c | 15 ++++++++-------
tools/perf/builtin-sched.c | 2 +-
tools/perf/builtin-top.c | 24 +++++++++++++-----------
tools/perf/builtin-trace.c | 2 +-
tools/perf/util/data_map.c | 8 --------
tools/perf/util/data_map.h | 2 --
tools/perf/util/header.c | 6 ------
tools/perf/util/include/asm/bug.h | 22 ++++++++++++++++++++++
tools/perf/util/symbol.c | 31 +++++++++++++++++++++----------
tools/perf/util/symbol.h | 11 ++++++++---
12 files changed, 85 insertions(+), 60 deletions(-)
create mode 100644 tools/perf/util/include/asm/bug.h
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 59b6123abec..cd97c2b1cc3 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -34,11 +34,9 @@ static int input;
static int full_paths;
static int print_line;
-static bool use_modules;
static unsigned long page_size;
static unsigned long mmap_window = 32;
-const char *vmlinux_name;
struct sym_hist {
u64 sum;
@@ -56,6 +54,11 @@ struct sym_priv {
struct sym_ext *ext;
};
+static struct symbol_conf symbol_conf = {
+ .priv_size = sizeof(struct sym_priv),
+ .try_vmlinux_path = true,
+};
+
static const char *sym_hist_filter;
static int symbol_filter(struct map *map __used, struct symbol *sym)
@@ -586,11 +589,6 @@ static int __cmd_annotate(void)
exit(0);
}
- if (kernel_maps__init(vmlinux_name, true, use_modules) < 0) {
- pr_err("failed to create kernel maps for symbol resolution\b");
- return -1;
- }
-
remap:
buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
MAP_SHARED, input, offset);
@@ -691,8 +689,9 @@ static const struct option options[] = {
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
- OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
- OPT_BOOLEAN('m', "modules", &use_modules,
+ OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+ "file", "vmlinux pathname"),
+ OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('l', "print-line", &print_line,
"print matching source lines (may be slow)"),
@@ -718,7 +717,8 @@ static void setup_sorting(void)
int cmd_annotate(int argc, const char **argv, const char *prefix __used)
{
- symbol__init(sizeof(struct sym_priv));
+ if (symbol__init(&symbol_conf) < 0)
+ return -1;
page_size = getpagesize();
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 173d6db42ec..330dbc762f9 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -412,7 +412,7 @@ static int read_events(void)
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, NULL, false, 0, 0,
+ return mmap_dispatch_perf_file(&header, input_name, 0, 0,
&cwdlen, &cwd);
}
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 1826be719b5..0ee3d05a040 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -39,7 +39,6 @@ static char *dso_list_str, *comm_list_str, *sym_list_str,
static struct strlist *dso_list, *comm_list, *sym_list;
static int force;
-static bool use_modules;
static int full_paths;
static int show_nr_samples;
@@ -53,12 +52,13 @@ static char *pretty_printing_style = default_pretty_printing_style;
static int exclude_other = 1;
static char callchain_default_opt[] = "fractal,0.5";
-const char *vmlinux_name;
static struct perf_header *header;
static u64 sample_type;
+struct symbol_conf symbol_conf;
+
static size_t
callchain__fprintf_left_margin(FILE *fp, int left_margin)
@@ -865,8 +865,7 @@ static int __cmd_report(void)
register_perf_file_handler(&file_handler);
- ret = mmap_dispatch_perf_file(&header, input_name, vmlinux_name,
- !vmlinux_name, force,
+ ret = mmap_dispatch_perf_file(&header, input_name, force,
full_paths, &cwdlen, &cwd);
if (ret)
return ret;
@@ -963,9 +962,10 @@ static const struct option options[] = {
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
- OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
+ OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+ "file", "vmlinux pathname"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
- OPT_BOOLEAN('m', "modules", &use_modules,
+ OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
"Show a column with the number of samples"),
@@ -1035,7 +1035,8 @@ static void setup_list(struct strlist **list, const char *list_str,
int cmd_report(int argc, const char **argv, const char *prefix __used)
{
- symbol__init(0);
+ if (symbol__init(&symbol_conf) < 0)
+ return -1;
argc = parse_options(argc, argv, options, report_usage, 0);
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 260f57a72ee..dbf089b12de 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1718,7 +1718,7 @@ static int read_events(void)
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, NULL, false, 0, 0,
+ return mmap_dispatch_perf_file(&header, input_name, 0, 0,
&cwdlen, &cwd);
}
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index b9a321fd184..a21247543fc 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -79,7 +79,7 @@ static int dump_symtab = 0;
static bool hide_kernel_symbols = false;
static bool hide_user_symbols = false;
static struct winsize winsize;
-const char *vmlinux_name;
+struct symbol_conf symbol_conf;
/*
* Source
@@ -128,7 +128,7 @@ struct sym_entry {
static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
{
- return ((void *)self) + symbol__priv_size;
+ return ((void *)self) + symbol_conf.priv_size;
}
static void get_term_dimensions(struct winsize *ws)
@@ -695,7 +695,7 @@ static void print_mapped_keys(void)
fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
- if (vmlinux_name) {
+ if (symbol_conf.vmlinux_name) {
fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
fprintf(stdout, "\t[S] stop annotation.\n");
@@ -732,7 +732,7 @@ static int key_mapped(int c)
case 'F':
case 's':
case 'S':
- return vmlinux_name ? 1 : 0;
+ return symbol_conf.vmlinux_name ? 1 : 0;
default:
break;
}
@@ -1261,7 +1261,8 @@ static const struct option options[] = {
"system-wide collection from all CPUs"),
OPT_INTEGER('C', "CPU", &profile_cpu,
"CPU to profile on"),
- OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
+ OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+ "file", "vmlinux pathname"),
OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
"hide kernel symbols"),
OPT_INTEGER('m', "mmap-pages", &mmap_pages,
@@ -1295,7 +1296,7 @@ static const struct option options[] = {
int cmd_top(int argc, const char **argv, const char *prefix __used)
{
- int counter, err;
+ int counter;
page_size = sysconf(_SC_PAGE_SIZE);
@@ -1313,15 +1314,16 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (!nr_counters)
nr_counters = 1;
- symbol__init(sizeof(struct sym_entry) +
- (nr_counters + 1) * sizeof(unsigned long));
+ symbol_conf.priv_size = (sizeof(struct sym_entry) +
+ (nr_counters + 1) * sizeof(unsigned long));
+ if (symbol_conf.vmlinux_name == NULL)
+ symbol_conf.try_vmlinux_path = true;
+ if (symbol__init(&symbol_conf) < 0)
+ return -1;
if (delay_secs < 1)
delay_secs = 1;
- err = kernel_maps__init(vmlinux_name, !vmlinux_name, true);
- if (err < 0)
- return err;
parse_source(sym_filter_entry);
/*
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index b71198e5dc1..75972fd073d 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -131,7 +131,7 @@ static int __cmd_trace(void)
register_idle_thread();
register_perf_file_handler(&file_handler);
- return mmap_dispatch_perf_file(&header, input_name, NULL, false,
+ return mmap_dispatch_perf_file(&header, input_name,
0, 0, &cwdlen, &cwd);
}
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index f318d19b256..b238462b898 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -101,8 +101,6 @@ out:
int mmap_dispatch_perf_file(struct perf_header **pheader,
const char *input_name,
- const char *vmlinux_name,
- bool try_vmlinux_path,
int force,
int full_paths,
int *cwdlen,
@@ -172,12 +170,6 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
curr_handler->sample_type_check(sample_type) < 0)
goto out_delete;
- err = -ENOMEM;
- if (kernel_maps__init(vmlinux_name, try_vmlinux_path, true) < 0) {
- pr_err("failed to setup the kernel maps to resolve symbols\n");
- goto out_delete;
- }
-
if (!full_paths) {
if (getcwd(__cwd, sizeof(__cwd)) == NULL) {
pr_err("failed to get the current directory\n");
diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index 3f0d21b3819..ae036ecd762 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -23,8 +23,6 @@ struct perf_file_handler {
void register_perf_file_handler(struct perf_file_handler *handler);
int mmap_dispatch_perf_file(struct perf_header **pheader,
const char *input_name,
- const char *vmlinux_name,
- bool try_vmlinux_path,
int force,
int full_paths,
int *cwdlen,
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 1332f8ec04a..271a1600e6f 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -253,12 +253,6 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
buildid_sec = &feat_sec[idx++];
- /*
- * Read the kernel buildid nad the list of loaded modules with
- * its build_ids:
- */
- kernel_maps__init(NULL, false, true);
-
/* Write build-ids */
buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
err = dsos__write_buildid_table(fd);
diff --git a/tools/perf/util/include/asm/bug.h b/tools/perf/util/include/asm/bug.h
new file mode 100644
index 00000000000..7fcc6810adc
--- /dev/null
+++ b/tools/perf/util/include/asm/bug.h
@@ -0,0 +1,22 @@
+#ifndef _PERF_ASM_GENERIC_BUG_H
+#define _PERF_ASM_GENERIC_BUG_H
+
+#define __WARN_printf(arg...) do { fprintf(stderr, arg); } while (0)
+
+#define WARN(condition, format...) ({ \
+ int __ret_warn_on = !!(condition); \
+ if (unlikely(__ret_warn_on)) \
+ __WARN_printf(format); \
+ unlikely(__ret_warn_on); \
+})
+
+#define WARN_ONCE(condition, format...) ({ \
+ static int __warned; \
+ int __ret_warn_once = !!(condition); \
+ \
+ if (unlikely(__ret_warn_once)) \
+ if (WARN(!__warned, format)) \
+ __warned = 1; \
+ unlikely(__ret_warn_once); \
+})
+#endif
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 44d81d5ae8c..c4ca974b36e 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -6,6 +6,7 @@
#include "debug.h"
+#include <asm/bug.h>
#include <libelf.h>
#include <gelf.h>
#include <elf.h>
@@ -37,6 +38,11 @@ unsigned int symbol__priv_size;
static int vmlinux_path__nr_entries;
static char **vmlinux_path;
+static struct symbol_conf symbol_conf__defaults = {
+ .use_modules = true,
+ .try_vmlinux_path = true,
+};
+
static struct rb_root kernel_maps;
static void dso__fixup_sym_end(struct dso *self)
@@ -1166,7 +1172,9 @@ struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp,
if (map) {
ip = map->map_ip(map, ip);
return map__find_symbol(map, ip, filter);
- }
+ } else
+ WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps),
+ "Empty kernel_maps, was symbol__init() called?\n");
return NULL;
}
@@ -1485,9 +1493,9 @@ size_t dsos__fprintf_buildid(FILE *fp)
return ret;
}
-static int kernel_maps__create_kernel_map(const char *vmlinux_name)
+static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
{
- struct dso *kernel = dso__new(vmlinux_name ?: "[kernel.kallsyms]");
+ struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]");
if (kernel == NULL)
return -1;
@@ -1577,18 +1585,21 @@ out_fail:
return -1;
}
-int kernel_maps__init(const char *vmlinux_name, bool try_vmlinux_path,
- bool use_modules)
+static int kernel_maps__init(const struct symbol_conf *conf)
{
- if (try_vmlinux_path && vmlinux_path__init() < 0)
+ const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults;
+
+ symbol__priv_size = pconf->priv_size;
+
+ if (pconf->try_vmlinux_path && vmlinux_path__init() < 0)
return -1;
- if (kernel_maps__create_kernel_map(vmlinux_name) < 0) {
+ if (kernel_maps__create_kernel_map(pconf) < 0) {
vmlinux_path__exit();
return -1;
}
- if (use_modules && kernel_maps__create_module_maps() < 0)
+ if (pconf->use_modules && kernel_maps__create_module_maps() < 0)
pr_debug("Failed to load list of modules in use, "
"continuing...\n");
/*
@@ -1598,8 +1609,8 @@ int kernel_maps__init(const char *vmlinux_name, bool try_vmlinux_path,
return 0;
}
-void symbol__init(unsigned int priv_size)
+int symbol__init(struct symbol_conf *conf)
{
elf_version(EV_CURRENT);
- symbol__priv_size = priv_size;
+ return kernel_maps__init(conf);
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 8c4d026e067..5538691494a 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -49,6 +49,13 @@ struct symbol {
char name[0];
};
+struct symbol_conf {
+ unsigned short priv_size;
+ bool try_vmlinux_path,
+ use_modules;
+ const char *vmlinux_name;
+};
+
extern unsigned int symbol__priv_size;
static inline void *symbol__priv(struct symbol *self)
@@ -93,11 +100,9 @@ int sysfs__read_build_id(const char *filename, void *bf, size_t size);
bool dsos__read_build_ids(void);
int build_id__sprintf(u8 *self, int len, char *bf);
-int kernel_maps__init(const char *vmlinux_name, bool try_vmlinux_path,
- bool use_modules);
size_t kernel_maps__fprintf(FILE *fp);
-void symbol__init(unsigned int priv_size);
+int symbol__init(struct symbol_conf *conf);
extern struct list_head dsos;
extern struct map *kernel_map;
--
cgit v1.2.3-70-g09d2
From 364794845cbc49e638b83d7ef739524291e1e961 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 24 Nov 2009 12:05:16 -0200
Subject: perf tools: Introduce zalloc() for the common calloc(1, N) case
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This way we type less characters and it looks more like the
kzalloc kernel counterpart.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259071517-3242-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/bench/mem-memcpy.c | 4 ++--
tools/perf/builtin-help.c | 4 ++--
tools/perf/builtin-probe.c | 4 ++--
tools/perf/builtin-sched.c | 14 +++++---------
tools/perf/builtin-top.c | 2 +-
tools/perf/util/header.c | 2 +-
tools/perf/util/parse-events.c | 2 +-
tools/perf/util/symbol.c | 11 +++++------
tools/perf/util/thread.c | 2 +-
tools/perf/util/util.h | 5 +++++
10 files changed, 25 insertions(+), 25 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/bench/mem-memcpy.c b/tools/perf/bench/mem-memcpy.c
index 5165fd1d8d2..89773178e89 100644
--- a/tools/perf/bench/mem-memcpy.c
+++ b/tools/perf/bench/mem-memcpy.c
@@ -127,11 +127,11 @@ int bench_mem_memcpy(int argc, const char **argv,
return 1;
}
- dst = calloc(length, sizeof(char));
+ dst = zalloc(length);
if (!dst)
die("memory allocation failed - maybe length is too large?\n");
- src = calloc(length, sizeof(char));
+ src = zalloc(length);
if (!src)
die("memory allocation failed - maybe length is too large?\n");
diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 768f9c82631..9f810b17c25 100644
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -179,7 +179,7 @@ static void add_man_viewer(const char *name)
while (*p)
p = &((*p)->next);
- *p = calloc(1, (sizeof(**p) + len + 1));
+ *p = zalloc(sizeof(**p) + len + 1);
strncpy((*p)->name, name, len);
}
@@ -194,7 +194,7 @@ static void do_add_man_viewer_info(const char *name,
size_t len,
const char *value)
{
- struct man_viewer_info_list *new = calloc(1, sizeof(*new) + len + 1);
+ struct man_viewer_info_list *new = zalloc(sizeof(*new) + len + 1);
strncpy(new->name, name, len);
new->info = strdup(value);
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index d78a3d94549..a2f6daf01ec 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -309,9 +309,9 @@ static int synthesize_probe_event(struct probe_point *pp)
{
char *buf;
int i, len, ret;
- pp->probes[0] = buf = (char *)calloc(MAX_CMDLEN, sizeof(char));
+ pp->probes[0] = buf = zalloc(MAX_CMDLEN);
if (!buf)
- die("Failed to allocate memory by calloc.");
+ die("Failed to allocate memory by zalloc.");
ret = snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset);
if (ret <= 0 || ret >= MAX_CMDLEN)
goto error;
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index dbf089b12de..19eb708a706 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -225,7 +225,7 @@ static void calibrate_sleep_measurement_overhead(void)
static struct sched_atom *
get_new_event(struct task_desc *task, u64 timestamp)
{
- struct sched_atom *event = calloc(1, sizeof(*event));
+ struct sched_atom *event = zalloc(sizeof(*event));
unsigned long idx = task->nr_events;
size_t size;
@@ -293,7 +293,7 @@ add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
return;
}
- wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem));
+ wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem));
sem_init(wakee_event->wait_sem, 0, 0);
wakee_event->specific_wait = 1;
event->wait_sem = wakee_event->wait_sem;
@@ -323,7 +323,7 @@ static struct task_desc *register_pid(unsigned long pid, const char *comm)
if (task)
return task;
- task = calloc(1, sizeof(*task));
+ task = zalloc(sizeof(*task));
task->pid = pid;
task->nr = nr_tasks;
strcpy(task->comm, comm);
@@ -962,9 +962,7 @@ __thread_latency_insert(struct rb_root *root, struct work_atoms *data,
static void thread_atoms_insert(struct thread *thread)
{
- struct work_atoms *atoms;
-
- atoms = calloc(sizeof(*atoms), 1);
+ struct work_atoms *atoms = zalloc(sizeof(*atoms));
if (!atoms)
die("No memory");
@@ -996,9 +994,7 @@ add_sched_out_event(struct work_atoms *atoms,
char run_state,
u64 timestamp)
{
- struct work_atom *atom;
-
- atom = calloc(sizeof(*atom), 1);
+ struct work_atom *atom = zalloc(sizeof(*atom));
if (!atom)
die("Non memory");
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a21247543fc..4c8653a86aa 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -181,7 +181,7 @@ static void parse_source(struct sym_entry *syme)
return;
if (syme->src == NULL) {
- syme->src = calloc(1, sizeof(*source));
+ syme->src = zalloc(sizeof(*source));
if (syme->src == NULL)
return;
pthread_mutex_init(&syme->src->lock, NULL);
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 271a1600e6f..4b586569bb0 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -63,7 +63,7 @@ int perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
*/
struct perf_header *perf_header__new(void)
{
- struct perf_header *self = calloc(sizeof(*self), 1);
+ struct perf_header *self = zalloc(sizeof(*self));
if (self != NULL) {
self->size = 1;
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 07002746927..9e5dbd66d34 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -197,7 +197,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
if (id == config) {
closedir(evt_dir);
closedir(sys_dir);
- path = calloc(1, sizeof(path));
+ path = zalloc(sizeof(path));
path->system = malloc(MAX_EVENT_LENGTH);
if (!path->system) {
free(path);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index c4ca974b36e..8db85b4f553 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -94,15 +94,14 @@ static void kernel_maps__fixup_end(void)
static struct symbol *symbol__new(u64 start, u64 len, const char *name)
{
size_t namelen = strlen(name) + 1;
- struct symbol *self = calloc(1, (symbol__priv_size +
- sizeof(*self) + namelen));
- if (!self)
+ struct symbol *self = zalloc(symbol__priv_size +
+ sizeof(*self) + namelen);
+ if (self == NULL)
return NULL;
- if (symbol__priv_size) {
- memset(self, 0, symbol__priv_size);
+ if (symbol__priv_size)
self = ((void *)self) + symbol__priv_size;
- }
+
self->start = start;
self->end = len ? start + len - 1 : start;
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 0f6d78c9863..1796625f778 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -11,7 +11,7 @@ static struct thread *last_match;
static struct thread *thread__new(pid_t pid)
{
- struct thread *self = calloc(1, sizeof(*self));
+ struct thread *self = zalloc(sizeof(*self));
if (self != NULL) {
self->pid = pid;
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index e1c623e0c99..30c5517f2f9 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -302,6 +302,11 @@ extern int xdup(int fd);
extern FILE *xfdopen(int fd, const char *mode);
extern int xmkstemp(char *template);
+static inline void *zalloc(size_t size)
+{
+ return calloc(1, size);
+}
+
static inline size_t xsize_t(off_t len)
{
return (size_t)len;
--
cgit v1.2.3-70-g09d2
From fcf1203a919c3a3d212c0ed01f5240fd592bf5ae Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 24 Nov 2009 13:01:52 -0200
Subject: perf symbols: Rename find_symbol routines to find_function
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Paving the way for supporting variable in adition to function
symbols.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259074912-5924-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 4 +--
tools/perf/builtin-kmem.c | 3 +-
tools/perf/builtin-report.c | 8 ++---
tools/perf/builtin-top.c | 4 +--
tools/perf/util/event.h | 7 +++--
tools/perf/util/map.c | 14 ++++-----
tools/perf/util/symbol.c | 68 +++++++++++++++++++++++--------------------
tools/perf/util/symbol.h | 6 ++--
tools/perf/util/thread.h | 4 +--
9 files changed, 62 insertions(+), 56 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index cd97c2b1cc3..18ac5eaefc3 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -162,7 +162,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (event->header.misc & PERF_RECORD_MISC_KERNEL) {
level = 'k';
- sym = kernel_maps__find_symbol(ip, &map, symbol_filter);
+ sym = kernel_maps__find_function(ip, &map, symbol_filter);
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
} else if (event->header.misc & PERF_RECORD_MISC_USER) {
@@ -171,7 +171,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (map != NULL) {
got_map:
ip = map->map_ip(map, ip);
- sym = map__find_symbol(map, ip, symbol_filter);
+ sym = map__find_function(map, ip, symbol_filter);
} else {
/*
* If this is outside of all known maps,
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 330dbc762f9..35722fafc4d 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -445,8 +445,7 @@ static void __print_result(struct rb_root *root, int n_lines, int is_caller)
if (is_caller) {
addr = data->call_site;
if (!raw_ip)
- sym = kernel_maps__find_symbol(addr,
- NULL, NULL);
+ sym = kernel_maps__find_function(addr, NULL, NULL);
} else
addr = data->ptr;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 0ee3d05a040..e4b1004e76e 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -448,14 +448,14 @@ got_map:
* trick of looking in the whole kernel symbol list.
*/
if ((long long)ip < 0)
- return kernel_maps__find_symbol(ip, mapp, NULL);
+ return kernel_maps__find_function(ip, mapp, NULL);
}
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
*ipp = ip;
- return map ? map__find_symbol(map, ip, NULL) : NULL;
+ return map ? map__find_function(map, ip, NULL) : NULL;
}
static int call__match(struct symbol *sym)
@@ -495,7 +495,7 @@ static struct symbol **resolve_callchain(struct thread *thread,
case PERF_CONTEXT_HV:
break;
case PERF_CONTEXT_KERNEL:
- sym = kernel_maps__find_symbol(ip, NULL, NULL);
+ sym = kernel_maps__find_function(ip, NULL, NULL);
break;
default:
sym = resolve_symbol(thread, NULL, &ip);
@@ -715,7 +715,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (cpumode == PERF_RECORD_MISC_KERNEL) {
level = 'k';
- sym = kernel_maps__find_symbol(ip, &map, NULL);
+ sym = kernel_maps__find_function(ip, &map, NULL);
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
} else if (cpumode == PERF_RECORD_MISC_USER) {
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 4c8653a86aa..ded6cf65ad9 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -948,7 +948,7 @@ static void event__process_sample(const event_t *self, int counter)
map = thread__find_map(thread, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
- sym = map__find_symbol(map, ip, symbol_filter);
+ sym = map__find_function(map, ip, symbol_filter);
if (sym == NULL)
return;
userspace_samples++;
@@ -968,7 +968,7 @@ static void event__process_sample(const event_t *self, int counter)
if (hide_kernel_symbols)
return;
- sym = kernel_maps__find_symbol(ip, &map, symbol_filter);
+ sym = kernel_maps__find_function(ip, &map, symbol_filter);
if (sym == NULL)
return;
break;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index f1e39261265..882a9531db9 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -119,9 +119,10 @@ void map__delete(struct map *self);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
-struct symbol *map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter);
-void map__fixup_start(struct map *self);
-void map__fixup_end(struct map *self);
+struct symbol *map__find_function(struct map *self, u64 ip,
+ symbol_filter_t filter);
+void map__fixup_start(struct map *self, struct rb_root *symbols);
+void map__fixup_end(struct map *self, struct rb_root *symbols);
int event__synthesize_thread(pid_t pid, int (*process)(event_t *event));
void event__synthesize_threads(int (*process)(event_t *event));
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 09412321a80..41c5c4a2001 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -80,18 +80,18 @@ void map__delete(struct map *self)
free(self);
}
-void map__fixup_start(struct map *self)
+void map__fixup_start(struct map *self, struct rb_root *symbols)
{
- struct rb_node *nd = rb_first(&self->dso->syms);
+ struct rb_node *nd = rb_first(symbols);
if (nd != NULL) {
struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
self->start = sym->start;
}
}
-void map__fixup_end(struct map *self)
+void map__fixup_end(struct map *self, struct rb_root *symbols)
{
- struct rb_node *nd = rb_last(&self->dso->syms);
+ struct rb_node *nd = rb_last(symbols);
if (nd != NULL) {
struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
self->end = sym->end;
@@ -100,8 +100,8 @@ void map__fixup_end(struct map *self)
#define DSO__DELETED "(deleted)"
-struct symbol *
-map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter)
+struct symbol *map__find_function(struct map *self, u64 ip,
+ symbol_filter_t filter)
{
if (!self->dso->loaded) {
int nr = dso__load(self->dso, self, filter);
@@ -136,7 +136,7 @@ map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter)
}
}
- return self->dso->find_symbol(self->dso, ip);
+ return self->dso->find_function(self->dso, ip);
}
struct map *map__clone(struct map *self)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 8db85b4f553..4ed379b915f 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -45,9 +45,9 @@ static struct symbol_conf symbol_conf__defaults = {
static struct rb_root kernel_maps;
-static void dso__fixup_sym_end(struct dso *self)
+static void symbols__fixup_end(struct rb_root *self)
{
- struct rb_node *nd, *prevnd = rb_first(&self->syms);
+ struct rb_node *nd, *prevnd = rb_first(self);
struct symbol *curr, *prev;
if (prevnd == NULL)
@@ -144,8 +144,8 @@ struct dso *dso__new(const char *name)
strcpy(self->name, name);
dso__set_long_name(self, self->name);
self->short_name = self->name;
- self->syms = RB_ROOT;
- self->find_symbol = dso__find_symbol;
+ self->functions = RB_ROOT;
+ self->find_function = dso__find_function;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
self->loaded = 0;
@@ -155,22 +155,22 @@ struct dso *dso__new(const char *name)
return self;
}
-static void dso__delete_symbols(struct dso *self)
+static void symbols__delete(struct rb_root *self)
{
struct symbol *pos;
- struct rb_node *next = rb_first(&self->syms);
+ struct rb_node *next = rb_first(self);
while (next) {
pos = rb_entry(next, struct symbol, rb_node);
next = rb_next(&pos->rb_node);
- rb_erase(&pos->rb_node, &self->syms);
+ rb_erase(&pos->rb_node, self);
symbol__delete(pos);
}
}
void dso__delete(struct dso *self)
{
- dso__delete_symbols(self);
+ symbols__delete(&self->functions);
if (self->long_name != self->name)
free(self->long_name);
free(self);
@@ -182,9 +182,9 @@ void dso__set_build_id(struct dso *self, void *build_id)
self->has_build_id = 1;
}
-static void dso__insert_symbol(struct dso *self, struct symbol *sym)
+static void symbols__insert(struct rb_root *self, struct symbol *sym)
{
- struct rb_node **p = &self->syms.rb_node;
+ struct rb_node **p = &self->rb_node;
struct rb_node *parent = NULL;
const u64 ip = sym->start;
struct symbol *s;
@@ -198,17 +198,17 @@ static void dso__insert_symbol(struct dso *self, struct symbol *sym)
p = &(*p)->rb_right;
}
rb_link_node(&sym->rb_node, parent, p);
- rb_insert_color(&sym->rb_node, &self->syms);
+ rb_insert_color(&sym->rb_node, self);
}
-struct symbol *dso__find_symbol(struct dso *self, u64 ip)
+static struct symbol *symbols__find(struct rb_root *self, u64 ip)
{
struct rb_node *n;
if (self == NULL)
return NULL;
- n = self->syms.rb_node;
+ n = self->rb_node;
while (n) {
struct symbol *s = rb_entry(n, struct symbol, rb_node);
@@ -224,6 +224,11 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip)
return NULL;
}
+struct symbol *dso__find_function(struct dso *self, u64 ip)
+{
+ return symbols__find(&self->functions, ip);
+}
+
int build_id__sprintf(u8 *self, int len, char *bf)
{
char *bid = bf;
@@ -253,9 +258,9 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
size_t ret = fprintf(fp, "dso: %s (", self->short_name);
ret += dso__fprintf_buildid(self, fp);
- ret += fprintf(fp, ")\n");
+ ret += fprintf(fp, ")\nFunctions:\n");
- for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&self->functions); nd; nd = rb_next(nd)) {
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
ret += symbol__fprintf(pos, fp);
}
@@ -320,7 +325,7 @@ static int kernel_maps__load_all_kallsyms(void)
* kernel_maps__split_kallsyms, when we have split the
* maps per module
*/
- dso__insert_symbol(kernel_map->dso, sym);
+ symbols__insert(&kernel_map->dso->functions, sym);
}
free(line);
@@ -344,7 +349,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
struct map *map = kernel_map;
struct symbol *pos;
int count = 0;
- struct rb_node *next = rb_first(&kernel_map->dso->syms);
+ struct rb_node *next = rb_first(&kernel_map->dso->functions);
int kernel_range = 0;
while (next) {
@@ -394,12 +399,13 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
}
if (filter && filter(map, pos)) {
- rb_erase(&pos->rb_node, &kernel_map->dso->syms);
+ rb_erase(&pos->rb_node, &kernel_map->dso->functions);
symbol__delete(pos);
} else {
if (map != kernel_map) {
- rb_erase(&pos->rb_node, &kernel_map->dso->syms);
- dso__insert_symbol(map->dso, pos);
+ rb_erase(&pos->rb_node,
+ &kernel_map->dso->functions);
+ symbols__insert(&map->dso->functions, pos);
}
count++;
}
@@ -414,7 +420,7 @@ static int kernel_maps__load_kallsyms(symbol_filter_t filter)
if (kernel_maps__load_all_kallsyms())
return -1;
- dso__fixup_sym_end(kernel_map->dso);
+ symbols__fixup_end(&kernel_map->dso->functions);
kernel_map->dso->origin = DSO__ORIG_KERNEL;
return kernel_maps__split_kallsyms(filter);
@@ -485,7 +491,7 @@ static int dso__load_perf_map(struct dso *self, struct map *map,
if (filter && filter(map, sym))
symbol__delete(sym);
else {
- dso__insert_symbol(self, sym);
+ symbols__insert(&self->functions, sym);
nr_syms++;
}
}
@@ -683,7 +689,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
if (filter && filter(map, f))
symbol__delete(f);
else {
- dso__insert_symbol(self, f);
+ symbols__insert(&self->functions, f);
++nr;
}
}
@@ -705,7 +711,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
if (filter && filter(map, f))
symbol__delete(f);
else {
- dso__insert_symbol(self, f);
+ symbols__insert(&self->functions, f);
++nr;
}
}
@@ -879,7 +885,7 @@ new_symbol:
if (filter && filter(curr_map, f))
symbol__delete(f);
else {
- dso__insert_symbol(curr_dso, f);
+ symbols__insert(&curr_dso->functions, f);
nr++;
}
}
@@ -888,7 +894,7 @@ new_symbol:
* For misannotated, zeroed, ASM function sizes.
*/
if (nr > 0)
- dso__fixup_sym_end(self);
+ symbols__fixup_end(&self->functions);
err = nr;
out_elf_end:
elf_end(elf);
@@ -1160,8 +1166,8 @@ static void kernel_maps__insert(struct map *map)
maps__insert(&kernel_maps, map);
}
-struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp,
- symbol_filter_t filter)
+struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
+ symbol_filter_t filter)
{
struct map *map = maps__find(&kernel_maps, ip);
@@ -1170,7 +1176,7 @@ struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp,
if (map) {
ip = map->map_ip(map, ip);
- return map__find_symbol(map, ip, filter);
+ return map__find_function(map, ip, filter);
} else
WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps),
"Empty kernel_maps, was symbol__init() called?\n");
@@ -1432,8 +1438,8 @@ do_kallsyms:
if (err > 0) {
out_fixup:
- map__fixup_start(map);
- map__fixup_end(map);
+ map__fixup_start(map, &map->dso->functions);
+ map__fixup_end(map, &map->dso->functions);
}
return err;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 5538691494a..65846d0c5df 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -65,8 +65,8 @@ static inline void *symbol__priv(struct symbol *self)
struct dso {
struct list_head node;
- struct rb_root syms;
- struct symbol *(*find_symbol)(struct dso *, u64 ip);
+ struct rb_root functions;
+ struct symbol *(*find_function)(struct dso *, u64 ip);
u8 adjust_symbols:1;
u8 slen_calculated:1;
u8 loaded:1;
@@ -83,7 +83,7 @@ struct dso {
struct dso *dso__new(const char *name);
void dso__delete(struct dso *self);
-struct symbol *dso__find_symbol(struct dso *self, u64 ip);
+struct symbol *dso__find_function(struct dso *self, u64 ip);
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index e4b8d437725..74cba6487ed 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -26,8 +26,8 @@ size_t threads__fprintf(FILE *fp);
void maps__insert(struct rb_root *maps, struct map *map);
struct map *maps__find(struct rb_root *maps, u64 ip);
-struct symbol *kernel_maps__find_symbol(const u64 ip, struct map **mapp,
- symbol_filter_t filter);
+struct symbol *kernel_maps__find_function(const u64 ip, struct map **mapp,
+ symbol_filter_t filter);
struct map *kernel_maps__find_by_dso_name(const char *name);
static inline struct map *thread__find_map(struct thread *self, u64 ip)
--
cgit v1.2.3-70-g09d2
From 3f5ee186f615a720fe78eb33662ae4da57a1eee3 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:12 -0200
Subject: perf symbols: Avoid annoying message about loading symbols
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This should be properly fixed when we remove the XXX comment in
'perf report', function resolve_symbol.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 4ed379b915f..8aab89b2248 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1516,6 +1516,7 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
vdso = dso__new("[vdso]");
if (vdso == NULL)
goto out_delete_kernel_map;
+ vdso->loaded = 1;
if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id,
sizeof(kernel->build_id)) == 0)
--
cgit v1.2.3-70-g09d2
From 61f37a824d6782503ff66bf653f2e07902b641a1 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:13 -0200
Subject: perf symbols: Rename kernel_mapto kernel_map[s]__functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
As we'll have kernel_map[s]__variables too.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 2 +-
tools/perf/util/symbol.c | 46 +++++++++++++++++++++----------------------
tools/perf/util/symbol.h | 2 +-
3 files changed, 25 insertions(+), 25 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 18ac5eaefc3..377cb7c9bdd 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -184,7 +184,7 @@ got_map:
* trick of looking in the whole kernel symbol list.
*/
if ((long long)ip < 0) {
- map = kernel_map;
+ map = kernel_map__functions;
goto got_map;
}
}
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 8aab89b2248..687fb7f8cc0 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -43,7 +43,7 @@ static struct symbol_conf symbol_conf__defaults = {
.try_vmlinux_path = true,
};
-static struct rb_root kernel_maps;
+static struct rb_root kernel_maps__functions;
static void symbols__fixup_end(struct rb_root *self)
{
@@ -71,7 +71,7 @@ static void symbols__fixup_end(struct rb_root *self)
static void kernel_maps__fixup_end(void)
{
struct map *prev, *curr;
- struct rb_node *nd, *prevnd = rb_first(&kernel_maps);
+ struct rb_node *nd, *prevnd = rb_first(&kernel_maps__functions);
if (prevnd == NULL)
return;
@@ -325,7 +325,7 @@ static int kernel_maps__load_all_kallsyms(void)
* kernel_maps__split_kallsyms, when we have split the
* maps per module
*/
- symbols__insert(&kernel_map->dso->functions, sym);
+ symbols__insert(&kernel_map__functions->dso->functions, sym);
}
free(line);
@@ -346,10 +346,10 @@ out_failure:
*/
static int kernel_maps__split_kallsyms(symbol_filter_t filter)
{
- struct map *map = kernel_map;
+ struct map *map = kernel_map__functions;
struct symbol *pos;
int count = 0;
- struct rb_node *next = rb_first(&kernel_map->dso->functions);
+ struct rb_node *next = rb_first(&kernel_map__functions->dso->functions);
int kernel_range = 0;
while (next) {
@@ -376,7 +376,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
*/
pos->start = map->map_ip(map, pos->start);
pos->end = map->map_ip(map, pos->end);
- } else if (map != kernel_map) {
+ } else if (map != kernel_map__functions) {
char dso_name[PATH_MAX];
struct dso *dso;
@@ -399,12 +399,12 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
}
if (filter && filter(map, pos)) {
- rb_erase(&pos->rb_node, &kernel_map->dso->functions);
+ rb_erase(&pos->rb_node, &kernel_map__functions->dso->functions);
symbol__delete(pos);
} else {
- if (map != kernel_map) {
+ if (map != kernel_map__functions) {
rb_erase(&pos->rb_node,
- &kernel_map->dso->functions);
+ &kernel_map__functions->dso->functions);
symbols__insert(&map->dso->functions, pos);
}
count++;
@@ -420,8 +420,8 @@ static int kernel_maps__load_kallsyms(symbol_filter_t filter)
if (kernel_maps__load_all_kallsyms())
return -1;
- symbols__fixup_end(&kernel_map->dso->functions);
- kernel_map->dso->origin = DSO__ORIG_KERNEL;
+ symbols__fixup_end(&kernel_map__functions->dso->functions);
+ kernel_map__functions->dso->origin = DSO__ORIG_KERNEL;
return kernel_maps__split_kallsyms(filter);
}
@@ -431,7 +431,7 @@ size_t kernel_maps__fprintf(FILE *fp)
size_t printed = fprintf(fp, "Kernel maps:\n");
struct rb_node *nd;
- for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&kernel_maps__functions); nd; nd = rb_next(nd)) {
struct map *pos = rb_entry(nd, struct map, rb_node);
printed += fprintf(fp, "Map:");
@@ -1159,17 +1159,17 @@ out:
return ret;
}
-struct map *kernel_map;
+struct map *kernel_map__functions;
static void kernel_maps__insert(struct map *map)
{
- maps__insert(&kernel_maps, map);
+ maps__insert(&kernel_maps__functions, map);
}
struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
symbol_filter_t filter)
{
- struct map *map = maps__find(&kernel_maps, ip);
+ struct map *map = maps__find(&kernel_maps__functions, ip);
if (mapp)
*mapp = map;
@@ -1178,7 +1178,7 @@ struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
ip = map->map_ip(map, ip);
return map__find_function(map, ip, filter);
} else
- WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps),
+ WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps__functions),
"Empty kernel_maps, was symbol__init() called?\n");
return NULL;
@@ -1188,7 +1188,7 @@ struct map *kernel_maps__find_by_dso_name(const char *name)
{
struct rb_node *nd;
- for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&kernel_maps__functions); nd; nd = rb_next(nd)) {
struct map *map = rb_entry(nd, struct map, rb_node);
if (map->dso && strcmp(map->dso->name, name) == 0)
@@ -1505,11 +1505,11 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
if (kernel == NULL)
return -1;
- kernel_map = map__new2(0, kernel);
- if (kernel_map == NULL)
+ kernel_map__functions = map__new2(0, kernel);
+ if (kernel_map__functions == NULL)
goto out_delete_kernel_dso;
- kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
+ kernel_map__functions->map_ip = kernel_map__functions->unmap_ip = identity__map_ip;
kernel->short_name = "[kernel]";
kernel->kernel = 1;
@@ -1522,15 +1522,15 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
sizeof(kernel->build_id)) == 0)
kernel->has_build_id = true;
- kernel_maps__insert(kernel_map);
+ kernel_maps__insert(kernel_map__functions);
dsos__add(kernel);
dsos__add(vdso);
return 0;
out_delete_kernel_map:
- map__delete(kernel_map);
- kernel_map = NULL;
+ map__delete(kernel_map__functions);
+ kernel_map__functions = NULL;
out_delete_kernel_dso:
dso__delete(kernel);
return -1;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 65846d0c5df..b42d196dd8e 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -105,6 +105,6 @@ size_t kernel_maps__fprintf(FILE *fp);
int symbol__init(struct symbol_conf *conf);
extern struct list_head dsos;
-extern struct map *kernel_map;
+extern struct map *kernel_map__functions;
extern struct dso *vdso;
#endif /* __PERF_SYMBOL */
--
cgit v1.2.3-70-g09d2
From b0da954a4759ac19fb80a959e53b613fe376bc12 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:14 -0200
Subject: perf symbols: Split the dsos list into kernel and user parts
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We don't need to look at modules in dsos__findnew because the
kernel events come only with user DSOs. Also we need a way to
list just the module DSOs so that we can create multiple sets of
maps, now that we will support maps for the variables in a
symtab.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/header.c | 12 +++++++++--
tools/perf/util/symbol.c | 56 ++++++++++++++++++++++++++++++++----------------
tools/perf/util/symbol.h | 2 +-
3 files changed, 48 insertions(+), 22 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 4b586569bb0..4805e6dfd23 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -185,11 +185,11 @@ static int do_write(int fd, const void *buf, size_t size)
return 0;
}
-static int dsos__write_buildid_table(int fd)
+static int __dsos__write_buildid_table(struct list_head *head, int fd)
{
struct dso *pos;
- list_for_each_entry(pos, &dsos, node) {
+ list_for_each_entry(pos, head, node) {
int err;
struct build_id_event b;
size_t len;
@@ -212,6 +212,14 @@ static int dsos__write_buildid_table(int fd)
return 0;
}
+static int dsos__write_buildid_table(int fd)
+{
+ int err = __dsos__write_buildid_table(&dsos__kernel, fd);
+ if (err == 0)
+ err = __dsos__write_buildid_table(&dsos__user, fd);
+ return err;
+}
+
static int perf_header__adds_write(struct perf_header *self, int fd)
{
int nr_sections;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 687fb7f8cc0..dc25231813e 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -28,8 +28,7 @@ enum dso_origin {
DSO__ORIG_NOT_FOUND,
};
-static void dsos__add(struct dso *dso);
-static struct dso *dsos__find(const char *name);
+static void dsos__add(struct list_head *head, struct dso *dso);
static struct map *map__new2(u64 start, struct dso *dso);
static void kernel_maps__insert(struct map *map);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
@@ -855,7 +854,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
curr_map->unmap_ip = identity__map_ip;
curr_dso->origin = DSO__ORIG_KERNEL;
kernel_maps__insert(curr_map);
- dsos__add(curr_dso);
+ dsos__add(&dsos__kernel, curr_dso);
} else
curr_dso = curr_map->dso;
@@ -907,12 +906,12 @@ static bool dso__build_id_equal(const struct dso *self, u8 *build_id)
return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0;
}
-bool dsos__read_build_ids(void)
+static bool __dsos__read_build_ids(struct list_head *head)
{
bool have_build_id = false;
struct dso *pos;
- list_for_each_entry(pos, &dsos, node)
+ list_for_each_entry(pos, head, node)
if (filename__read_build_id(pos->long_name, pos->build_id,
sizeof(pos->build_id)) > 0) {
have_build_id = true;
@@ -922,6 +921,12 @@ bool dsos__read_build_ids(void)
return have_build_id;
}
+bool dsos__read_build_ids(void)
+{
+ return __dsos__read_build_ids(&dsos__kernel) ||
+ __dsos__read_build_ids(&dsos__user);
+}
+
/*
* Align offset to 4 bytes as needed for note name and descriptor data.
*/
@@ -1343,7 +1348,7 @@ static int kernel_maps__create_module_maps(void)
dso->origin = DSO__ORIG_KMODULE;
kernel_maps__insert(map);
- dsos__add(dso);
+ dsos__add(&dsos__kernel, dso);
}
free(line);
@@ -1445,19 +1450,20 @@ out_fixup:
return err;
}
-LIST_HEAD(dsos);
+LIST_HEAD(dsos__user);
+LIST_HEAD(dsos__kernel);
struct dso *vdso;
-static void dsos__add(struct dso *dso)
+static void dsos__add(struct list_head *head, struct dso *dso)
{
- list_add_tail(&dso->node, &dsos);
+ list_add_tail(&dso->node, head);
}
-static struct dso *dsos__find(const char *name)
+static struct dso *dsos__find(struct list_head *head, const char *name)
{
struct dso *pos;
- list_for_each_entry(pos, &dsos, node)
+ list_for_each_entry(pos, head, node)
if (strcmp(pos->name, name) == 0)
return pos;
return NULL;
@@ -1465,12 +1471,12 @@ static struct dso *dsos__find(const char *name)
struct dso *dsos__findnew(const char *name)
{
- struct dso *dso = dsos__find(name);
+ struct dso *dso = dsos__find(&dsos__user, name);
if (!dso) {
dso = dso__new(name);
if (dso != NULL) {
- dsos__add(dso);
+ dsos__add(&dsos__user, dso);
dso__set_basename(dso);
}
}
@@ -1478,26 +1484,38 @@ struct dso *dsos__findnew(const char *name)
return dso;
}
-void dsos__fprintf(FILE *fp)
+static void __dsos__fprintf(struct list_head *head, FILE *fp)
{
struct dso *pos;
- list_for_each_entry(pos, &dsos, node)
+ list_for_each_entry(pos, head, node)
dso__fprintf(pos, fp);
}
-size_t dsos__fprintf_buildid(FILE *fp)
+void dsos__fprintf(FILE *fp)
+{
+ __dsos__fprintf(&dsos__kernel, fp);
+ __dsos__fprintf(&dsos__user, fp);
+}
+
+static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp)
{
struct dso *pos;
size_t ret = 0;
- list_for_each_entry(pos, &dsos, node) {
+ list_for_each_entry(pos, head, node) {
ret += dso__fprintf_buildid(pos, fp);
ret += fprintf(fp, " %s\n", pos->long_name);
}
return ret;
}
+size_t dsos__fprintf_buildid(FILE *fp)
+{
+ return (__dsos__fprintf_buildid(&dsos__kernel, fp) +
+ __dsos__fprintf_buildid(&dsos__user, fp));
+}
+
static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
{
struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]");
@@ -1523,8 +1541,8 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
kernel->has_build_id = true;
kernel_maps__insert(kernel_map__functions);
- dsos__add(kernel);
- dsos__add(vdso);
+ dsos__add(&dsos__kernel, kernel);
+ dsos__add(&dsos__user, vdso);
return 0;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index b42d196dd8e..5d0371fe8a0 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -104,7 +104,7 @@ size_t kernel_maps__fprintf(FILE *fp);
int symbol__init(struct symbol_conf *conf);
-extern struct list_head dsos;
+extern struct list_head dsos__user, dsos__kernel;
extern struct map *kernel_map__functions;
extern struct dso *vdso;
#endif /* __PERF_SYMBOL */
--
cgit v1.2.3-70-g09d2
From 605ca4ba017455d39ac6991c58eb1e80fb8af48d Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:15 -0200
Subject: perf symbols: Unexport kernel_map__functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
perf annotate was the only user, and it doesn't really need it.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-4-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 8 +++-----
tools/perf/util/symbol.c | 3 +--
tools/perf/util/symbol.h | 1 -
3 files changed, 4 insertions(+), 8 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 377cb7c9bdd..0846c8a155e 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -169,7 +169,6 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
level = '.';
map = thread__find_map(thread, ip);
if (map != NULL) {
-got_map:
ip = map->map_ip(map, ip);
sym = map__find_function(map, ip, symbol_filter);
} else {
@@ -183,10 +182,9 @@ got_map:
* the "[vdso]" dso, but for now lets use the old
* trick of looking in the whole kernel symbol list.
*/
- if ((long long)ip < 0) {
- map = kernel_map__functions;
- goto got_map;
- }
+ if ((long long)ip < 0)
+ sym = kernel_maps__find_function(ip, &map,
+ symbol_filter);
}
dump_printf(" ...... dso: %s\n",
map ? map->dso->long_name : "<not found>");
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index dc25231813e..0b8a298d41a 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -36,6 +36,7 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
unsigned int symbol__priv_size;
static int vmlinux_path__nr_entries;
static char **vmlinux_path;
+static struct map *kernel_map__functions;
static struct symbol_conf symbol_conf__defaults = {
.use_modules = true,
@@ -1164,8 +1165,6 @@ out:
return ret;
}
-struct map *kernel_map__functions;
-
static void kernel_maps__insert(struct map *map)
{
maps__insert(&kernel_maps__functions, map);
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 5d0371fe8a0..fb0be9e92bf 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -105,6 +105,5 @@ size_t kernel_maps__fprintf(FILE *fp);
int symbol__init(struct symbol_conf *conf);
extern struct list_head dsos__user, dsos__kernel;
-extern struct map *kernel_map__functions;
extern struct dso *vdso;
#endif /* __PERF_SYMBOL */
--
cgit v1.2.3-70-g09d2
From 3610583c29563e23dd038d2870f59c88438bf7a3 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:16 -0200
Subject: perf symbols: Add a 'type' field to struct map
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
That way we will be able to check if the right symtab is loaded
in the underlying DSO.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-5-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-top.c | 2 +-
tools/perf/util/event.h | 12 +++++++++---
tools/perf/util/map.c | 12 +++++++-----
tools/perf/util/process_events.c | 2 +-
tools/perf/util/symbol.c | 31 +++++++++++++++++++++----------
tools/perf/util/symbol.h | 4 +++-
6 files changed, 42 insertions(+), 21 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ded6cf65ad9..a0168f260d0 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -996,7 +996,7 @@ static void event__process_mmap(event_t *self)
struct thread *thread = threads__findnew(self->mmap.pid);
if (thread != NULL) {
- struct map *map = map__new(&self->mmap, NULL, 0);
+ struct map *map = map__new(&self->mmap, MAP__FUNCTION, NULL, 0);
if (map != NULL)
thread__insert_map(thread, map);
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 882a9531db9..29543bd8800 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -80,6 +80,10 @@ typedef union event_union {
struct sample_event sample;
} event_t;
+enum map_type {
+ MAP__FUNCTION,
+};
+
struct map {
union {
struct rb_node rb_node;
@@ -87,6 +91,7 @@ struct map {
};
u64 start;
u64 end;
+ enum map_type type;
u64 pgoff;
u64 (*map_ip)(struct map *, u64);
u64 (*unmap_ip)(struct map *, u64);
@@ -112,9 +117,10 @@ struct symbol;
typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
-void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
- struct dso *dso);
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
+void map__init(struct map *self, enum map_type type,
+ u64 start, u64 end, u64 pgoff, struct dso *dso);
+struct map *map__new(struct mmap_event *event, enum map_type,
+ char *cwd, int cwdlen);
void map__delete(struct map *self);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 41c5c4a2001..52bb4c6cf74 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -20,9 +20,10 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
return n;
}
-void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
- struct dso *dso)
+void map__init(struct map *self, enum map_type type,
+ u64 start, u64 end, u64 pgoff, struct dso *dso)
{
+ self->type = type;
self->start = start;
self->end = end;
self->pgoff = pgoff;
@@ -32,7 +33,8 @@ void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
RB_CLEAR_NODE(&self->rb_node);
}
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
+struct map *map__new(struct mmap_event *event, enum map_type type,
+ char *cwd, int cwdlen)
{
struct map *self = malloc(sizeof(*self));
@@ -63,7 +65,7 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
if (dso == NULL)
goto out_delete;
- map__init(self, event->start, event->start + event->len,
+ map__init(self, type, event->start, event->start + event->len,
event->pgoff, dso);
if (self->dso == vdso || anon)
@@ -103,7 +105,7 @@ void map__fixup_end(struct map *self, struct rb_root *symbols)
struct symbol *map__find_function(struct map *self, u64 ip,
symbol_filter_t filter)
{
- if (!self->dso->loaded) {
+ if (!dso__loaded(self->dso, self->type)) {
int nr = dso__load(self->dso, self, filter);
if (nr < 0) {
diff --git a/tools/perf/util/process_events.c b/tools/perf/util/process_events.c
index a9204363efd..53778684641 100644
--- a/tools/perf/util/process_events.c
+++ b/tools/perf/util/process_events.c
@@ -6,7 +6,7 @@ int cwdlen;
int
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct map *map = map__new(&event->mmap, cwd, cwdlen);
+ struct map *map = map__new(&event->mmap, MAP__FUNCTION, cwd, cwdlen);
struct thread *thread = threads__findnew(event->mmap.pid);
dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0b8a298d41a..45a4a9a7618 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -29,7 +29,7 @@ enum dso_origin {
};
static void dsos__add(struct list_head *head, struct dso *dso);
-static struct map *map__new2(u64 start, struct dso *dso);
+static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
static void kernel_maps__insert(struct map *map);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
symbol_filter_t filter);
@@ -45,6 +45,16 @@ static struct symbol_conf symbol_conf__defaults = {
static struct rb_root kernel_maps__functions;
+bool dso__loaded(const struct dso *self, enum map_type type)
+{
+ return self->loaded & (1 << type);
+}
+
+static void dso__set_loaded(struct dso *self, enum map_type type)
+{
+ self->loaded |= (1 << type);
+}
+
static void symbols__fixup_end(struct rb_root *self)
{
struct rb_node *nd, *prevnd = rb_first(self);
@@ -387,7 +397,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
if (dso == NULL)
return -1;
- map = map__new2(pos->start, dso);
+ map = map__new2(pos->start, dso, MAP__FUNCTION);
if (map == NULL) {
dso__delete(dso);
return -1;
@@ -846,7 +856,8 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
curr_dso = dso__new(dso_name);
if (curr_dso == NULL)
goto out_elf_end;
- curr_map = map__new2(start, curr_dso);
+ curr_map = map__new2(start, curr_dso,
+ MAP__FUNCTION);
if (curr_map == NULL) {
dso__delete(curr_dso);
goto out_elf_end;
@@ -1076,7 +1087,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
int ret = -1;
int fd;
- self->loaded = 1;
+ dso__set_loaded(self, map->type);
if (self->kernel)
return dso__load_kernel_sym(self, map, filter);
@@ -1275,7 +1286,7 @@ static int dsos__set_modules_path(void)
* they are loaded) and for vmlinux, where only after we load all the
* symbols we'll know where it starts and ends.
*/
-static struct map *map__new2(u64 start, struct dso *dso)
+static struct map *map__new2(u64 start, struct dso *dso, enum map_type type)
{
struct map *self = malloc(sizeof(*self));
@@ -1283,7 +1294,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
/*
* ->end will be filled after we load all the symbols
*/
- map__init(self, start, 0, 0, dso);
+ map__init(self, type, start, 0, 0, dso);
}
return self;
@@ -1333,7 +1344,7 @@ static int kernel_maps__create_module_maps(void)
if (dso == NULL)
goto out_delete_line;
- map = map__new2(start, dso);
+ map = map__new2(start, dso, MAP__FUNCTION);
if (map == NULL) {
dso__delete(dso);
goto out_delete_line;
@@ -1394,7 +1405,7 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
if (fd < 0)
return -1;
- self->loaded = 1;
+ dso__set_loaded(self, map->type);
err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0);
close(fd);
@@ -1522,7 +1533,7 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
if (kernel == NULL)
return -1;
- kernel_map__functions = map__new2(0, kernel);
+ kernel_map__functions = map__new2(0, kernel, MAP__FUNCTION);
if (kernel_map__functions == NULL)
goto out_delete_kernel_dso;
@@ -1533,7 +1544,7 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
vdso = dso__new("[vdso]");
if (vdso == NULL)
goto out_delete_kernel_map;
- vdso->loaded = 1;
+ dso__set_loaded(vdso, MAP__FUNCTION);
if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id,
sizeof(kernel->build_id)) == 0)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index fb0be9e92bf..11d41952ce0 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -69,10 +69,10 @@ struct dso {
struct symbol *(*find_function)(struct dso *, u64 ip);
u8 adjust_symbols:1;
u8 slen_calculated:1;
- u8 loaded:1;
u8 has_build_id:1;
u8 kernel:1;
unsigned char origin;
+ u8 loaded;
u8 build_id[BUILD_ID_SIZE];
u16 long_name_len;
const char *short_name;
@@ -85,6 +85,8 @@ void dso__delete(struct dso *self);
struct symbol *dso__find_function(struct dso *self, u64 ip);
+bool dso__loaded(const struct dso *self, enum map_type type);
+
struct dso *dsos__findnew(const char *name);
int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
--
cgit v1.2.3-70-g09d2
From 6a4694a433a218c729d336b348a01bfc720da095 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:17 -0200
Subject: perf symbols: Better support for multiple symbol tables per dso
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
By using an array of rb_roots in struct dso we can, from a
struct map instance to get the right symbol rb_tree more easily.
This way we can have just one symbol lookup method for struct
map instances, map__find_symbol, instead of one per symtab type
(functions, variables).
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-6-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 2 +-
tools/perf/builtin-report.c | 2 +-
tools/perf/builtin-top.c | 2 +-
tools/perf/util/event.h | 12 +++++----
tools/perf/util/map.c | 12 +++++----
tools/perf/util/symbol.c | 59 ++++++++++++++++++++++++++-----------------
tools/perf/util/symbol.h | 7 +++--
7 files changed, 56 insertions(+), 40 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 0846c8a155e..c32e7609b77 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -170,7 +170,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
map = thread__find_map(thread, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
- sym = map__find_function(map, ip, symbol_filter);
+ sym = map__find_symbol(map, ip, symbol_filter);
} else {
/*
* If this is outside of all known maps,
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index e4b1004e76e..400bef981c6 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -455,7 +455,7 @@ got_map:
dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
*ipp = ip;
- return map ? map__find_function(map, ip, NULL) : NULL;
+ return map ? map__find_symbol(map, ip, NULL) : NULL;
}
static int call__match(struct symbol *sym)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a0168f260d0..abe78bbd154 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -948,7 +948,7 @@ static void event__process_sample(const event_t *self, int counter)
map = thread__find_map(thread, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
- sym = map__find_function(map, ip, symbol_filter);
+ sym = map__find_symbol(map, ip, symbol_filter);
if (sym == NULL)
return;
userspace_samples++;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 29543bd8800..3ae3c964c90 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -81,7 +81,9 @@ typedef union event_union {
} event_t;
enum map_type {
- MAP__FUNCTION,
+ MAP__FUNCTION = 0,
+
+ MAP__NR_TYPES,
};
struct map {
@@ -125,10 +127,10 @@ void map__delete(struct map *self);
struct map *map__clone(struct map *self);
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *self, FILE *fp);
-struct symbol *map__find_function(struct map *self, u64 ip,
- symbol_filter_t filter);
-void map__fixup_start(struct map *self, struct rb_root *symbols);
-void map__fixup_end(struct map *self, struct rb_root *symbols);
+struct symbol *map__find_symbol(struct map *self, u64 addr,
+ symbol_filter_t filter);
+void map__fixup_start(struct map *self);
+void map__fixup_end(struct map *self);
int event__synthesize_thread(pid_t pid, int (*process)(event_t *event));
void event__synthesize_threads(int (*process)(event_t *event));
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 52bb4c6cf74..69f94fe9db2 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -82,8 +82,9 @@ void map__delete(struct map *self)
free(self);
}
-void map__fixup_start(struct map *self, struct rb_root *symbols)
+void map__fixup_start(struct map *self)
{
+ struct rb_root *symbols = &self->dso->symbols[self->type];
struct rb_node *nd = rb_first(symbols);
if (nd != NULL) {
struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
@@ -91,8 +92,9 @@ void map__fixup_start(struct map *self, struct rb_root *symbols)
}
}
-void map__fixup_end(struct map *self, struct rb_root *symbols)
+void map__fixup_end(struct map *self)
{
+ struct rb_root *symbols = &self->dso->symbols[self->type];
struct rb_node *nd = rb_last(symbols);
if (nd != NULL) {
struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
@@ -102,8 +104,8 @@ void map__fixup_end(struct map *self, struct rb_root *symbols)
#define DSO__DELETED "(deleted)"
-struct symbol *map__find_function(struct map *self, u64 ip,
- symbol_filter_t filter)
+struct symbol *map__find_symbol(struct map *self, u64 addr,
+ symbol_filter_t filter)
{
if (!dso__loaded(self->dso, self->type)) {
int nr = dso__load(self->dso, self, filter);
@@ -138,7 +140,7 @@ struct symbol *map__find_function(struct map *self, u64 ip,
}
}
- return self->dso->find_function(self->dso, ip);
+ return self->dso->find_symbol(self->dso, self->type, addr);
}
struct map *map__clone(struct map *self)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 45a4a9a7618..9a2dd819dee 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -31,6 +31,7 @@ enum dso_origin {
static void dsos__add(struct list_head *head, struct dso *dso);
static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
static void kernel_maps__insert(struct map *map);
+struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
symbol_filter_t filter);
unsigned int symbol__priv_size;
@@ -151,11 +152,13 @@ struct dso *dso__new(const char *name)
struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
if (self != NULL) {
+ int i;
strcpy(self->name, name);
dso__set_long_name(self, self->name);
self->short_name = self->name;
- self->functions = RB_ROOT;
- self->find_function = dso__find_function;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ self->symbols[i] = RB_ROOT;
+ self->find_symbol = dso__find_symbol;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
self->loaded = 0;
@@ -180,7 +183,9 @@ static void symbols__delete(struct rb_root *self)
void dso__delete(struct dso *self)
{
- symbols__delete(&self->functions);
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ symbols__delete(&self->symbols[i]);
if (self->long_name != self->name)
free(self->long_name);
free(self);
@@ -234,9 +239,9 @@ static struct symbol *symbols__find(struct rb_root *self, u64 ip)
return NULL;
}
-struct symbol *dso__find_function(struct dso *self, u64 ip)
+struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr)
{
- return symbols__find(&self->functions, ip);
+ return symbols__find(&self->symbols[type], addr);
}
int build_id__sprintf(u8 *self, int len, char *bf)
@@ -262,17 +267,25 @@ size_t dso__fprintf_buildid(struct dso *self, FILE *fp)
return fprintf(fp, "%s", sbuild_id);
}
+static const char * map_type__name[MAP__NR_TYPES] = {
+ [MAP__FUNCTION] = "Functions",
+};
+
size_t dso__fprintf(struct dso *self, FILE *fp)
{
+ int i;
struct rb_node *nd;
size_t ret = fprintf(fp, "dso: %s (", self->short_name);
ret += dso__fprintf_buildid(self, fp);
- ret += fprintf(fp, ")\nFunctions:\n");
+ ret += fprintf(fp, ")\n");
+ for (i = 0; i < MAP__NR_TYPES; ++i) {
+ ret += fprintf(fp, "%s:\n", map_type__name[i]);
- for (nd = rb_first(&self->functions); nd; nd = rb_next(nd)) {
- struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
- ret += symbol__fprintf(pos, fp);
+ for (nd = rb_first(&self->symbols[i]); nd; nd = rb_next(nd)) {
+ struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
+ ret += symbol__fprintf(pos, fp);
+ }
}
return ret;
@@ -335,7 +348,7 @@ static int kernel_maps__load_all_kallsyms(void)
* kernel_maps__split_kallsyms, when we have split the
* maps per module
*/
- symbols__insert(&kernel_map__functions->dso->functions, sym);
+ symbols__insert(&kernel_map__functions->dso->symbols[MAP__FUNCTION], sym);
}
free(line);
@@ -359,7 +372,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
struct map *map = kernel_map__functions;
struct symbol *pos;
int count = 0;
- struct rb_node *next = rb_first(&kernel_map__functions->dso->functions);
+ struct rb_node *next = rb_first(&kernel_map__functions->dso->symbols[map->type]);
int kernel_range = 0;
while (next) {
@@ -409,13 +422,13 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
}
if (filter && filter(map, pos)) {
- rb_erase(&pos->rb_node, &kernel_map__functions->dso->functions);
+ rb_erase(&pos->rb_node, &kernel_map__functions->dso->symbols[map->type]);
symbol__delete(pos);
} else {
if (map != kernel_map__functions) {
rb_erase(&pos->rb_node,
- &kernel_map__functions->dso->functions);
- symbols__insert(&map->dso->functions, pos);
+ &kernel_map__functions->dso->symbols[map->type]);
+ symbols__insert(&map->dso->symbols[map->type], pos);
}
count++;
}
@@ -430,7 +443,7 @@ static int kernel_maps__load_kallsyms(symbol_filter_t filter)
if (kernel_maps__load_all_kallsyms())
return -1;
- symbols__fixup_end(&kernel_map__functions->dso->functions);
+ symbols__fixup_end(&kernel_map__functions->dso->symbols[MAP__FUNCTION]);
kernel_map__functions->dso->origin = DSO__ORIG_KERNEL;
return kernel_maps__split_kallsyms(filter);
@@ -501,7 +514,7 @@ static int dso__load_perf_map(struct dso *self, struct map *map,
if (filter && filter(map, sym))
symbol__delete(sym);
else {
- symbols__insert(&self->functions, sym);
+ symbols__insert(&self->symbols[map->type], sym);
nr_syms++;
}
}
@@ -699,7 +712,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
if (filter && filter(map, f))
symbol__delete(f);
else {
- symbols__insert(&self->functions, f);
+ symbols__insert(&self->symbols[map->type], f);
++nr;
}
}
@@ -721,7 +734,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
if (filter && filter(map, f))
symbol__delete(f);
else {
- symbols__insert(&self->functions, f);
+ symbols__insert(&self->symbols[map->type], f);
++nr;
}
}
@@ -896,7 +909,7 @@ new_symbol:
if (filter && filter(curr_map, f))
symbol__delete(f);
else {
- symbols__insert(&curr_dso->functions, f);
+ symbols__insert(&curr_dso->symbols[curr_map->type], f);
nr++;
}
}
@@ -905,7 +918,7 @@ new_symbol:
* For misannotated, zeroed, ASM function sizes.
*/
if (nr > 0)
- symbols__fixup_end(&self->functions);
+ symbols__fixup_end(&self->symbols[map->type]);
err = nr;
out_elf_end:
elf_end(elf);
@@ -1191,7 +1204,7 @@ struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
if (map) {
ip = map->map_ip(map, ip);
- return map__find_function(map, ip, filter);
+ return map__find_symbol(map, ip, filter);
} else
WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps__functions),
"Empty kernel_maps, was symbol__init() called?\n");
@@ -1453,8 +1466,8 @@ do_kallsyms:
if (err > 0) {
out_fixup:
- map__fixup_start(map, &map->dso->functions);
- map__fixup_end(map, &map->dso->functions);
+ map__fixup_start(map);
+ map__fixup_end(map);
}
return err;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 11d41952ce0..8934814d5a6 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -65,8 +65,9 @@ static inline void *symbol__priv(struct symbol *self)
struct dso {
struct list_head node;
- struct rb_root functions;
- struct symbol *(*find_function)(struct dso *, u64 ip);
+ struct rb_root symbols[MAP__NR_TYPES];
+ struct symbol *(*find_symbol)(struct dso *self,
+ enum map_type type, u64 addr);
u8 adjust_symbols:1;
u8 slen_calculated:1;
u8 has_build_id:1;
@@ -83,8 +84,6 @@ struct dso {
struct dso *dso__new(const char *name);
void dso__delete(struct dso *self);
-struct symbol *dso__find_function(struct dso *self, u64 ip);
-
bool dso__loaded(const struct dso *self, enum map_type type);
struct dso *dsos__findnew(const char *name);
--
cgit v1.2.3-70-g09d2
From 4e06255f5cf2acf6a5abfe7df8c9690463259dea Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:18 -0200
Subject: perf symbols: Make the kallsyms loading routines part of the dso
class
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
So that the kallsyms loading routines are the direct counterpart
of the vmlinux loading ones, i.e. dso__load_kallsyms is the
counterpart of dso__load_vmlinux.
In the process make them also use the symbols rb tree indexed by
map->type, paving the way for supporting other types of symtabs,
such as the next one to be supported: variables.
This also allowed removal of yet another global variable:
kernel_map__functions.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-7-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 77 ++++++++++++++++++++++++------------------------
1 file changed, 38 insertions(+), 39 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 9a2dd819dee..956656fcaab 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -37,7 +37,6 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
unsigned int symbol__priv_size;
static int vmlinux_path__nr_entries;
static char **vmlinux_path;
-static struct map *kernel_map__functions;
static struct symbol_conf symbol_conf__defaults = {
.use_modules = true,
@@ -296,10 +295,11 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
* so that we can in the next step set the symbol ->end address and then
* call kernel_maps__split_kallsyms.
*/
-static int kernel_maps__load_all_kallsyms(void)
+static int dso__load_all_kallsyms(struct dso *self, struct map *map)
{
char *line = NULL;
size_t n;
+ struct rb_root *root = &self->symbols[map->type];
FILE *file = fopen("/proc/kallsyms", "r");
if (file == NULL)
@@ -342,13 +342,11 @@ static int kernel_maps__load_all_kallsyms(void)
if (sym == NULL)
goto out_delete_line;
-
/*
* We will pass the symbols to the filter later, in
- * kernel_maps__split_kallsyms, when we have split the
- * maps per module
+ * map__split_kallsyms, when we have split the maps per module
*/
- symbols__insert(&kernel_map__functions->dso->symbols[MAP__FUNCTION], sym);
+ symbols__insert(root, sym);
}
free(line);
@@ -367,12 +365,14 @@ out_failure:
* kernel range is broken in several maps, named [kernel].N, as we don't have
* the original ELF section names vmlinux have.
*/
-static int kernel_maps__split_kallsyms(symbol_filter_t filter)
+static int dso__split_kallsyms(struct dso *self, struct map *map,
+ symbol_filter_t filter)
{
- struct map *map = kernel_map__functions;
+ struct map *curr_map = map;
struct symbol *pos;
int count = 0;
- struct rb_node *next = rb_first(&kernel_map__functions->dso->symbols[map->type]);
+ struct rb_root *root = &self->symbols[map->type];
+ struct rb_node *next = rb_first(root);
int kernel_range = 0;
while (next) {
@@ -385,9 +385,9 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
if (module) {
*module++ = '\0';
- if (strcmp(map->dso->name, module)) {
- map = kernel_maps__find_by_dso_name(module);
- if (!map) {
+ if (strcmp(self->name, module)) {
+ curr_map = kernel_maps__find_by_dso_name(module);
+ if (curr_map == NULL) {
pr_err("/proc/{kallsyms,modules} "
"inconsistency!\n");
return -1;
@@ -397,9 +397,9 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
* So that we look just like we get from .ko files,
* i.e. not prelinked, relative to map->start.
*/
- pos->start = map->map_ip(map, pos->start);
- pos->end = map->map_ip(map, pos->end);
- } else if (map != kernel_map__functions) {
+ pos->start = curr_map->map_ip(curr_map, pos->start);
+ pos->end = curr_map->map_ip(curr_map, pos->end);
+ } else if (curr_map != map) {
char dso_name[PATH_MAX];
struct dso *dso;
@@ -410,25 +410,24 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
if (dso == NULL)
return -1;
- map = map__new2(pos->start, dso, MAP__FUNCTION);
+ curr_map = map__new2(pos->start, dso, map->type);
if (map == NULL) {
dso__delete(dso);
return -1;
}
- map->map_ip = map->unmap_ip = identity__map_ip;
- kernel_maps__insert(map);
+ curr_map->map_ip = curr_map->unmap_ip = identity__map_ip;
+ kernel_maps__insert(curr_map);
++kernel_range;
}
- if (filter && filter(map, pos)) {
- rb_erase(&pos->rb_node, &kernel_map__functions->dso->symbols[map->type]);
+ if (filter && filter(curr_map, pos)) {
+ rb_erase(&pos->rb_node, root);
symbol__delete(pos);
} else {
- if (map != kernel_map__functions) {
- rb_erase(&pos->rb_node,
- &kernel_map__functions->dso->symbols[map->type]);
- symbols__insert(&map->dso->symbols[map->type], pos);
+ if (curr_map != map) {
+ rb_erase(&pos->rb_node, root);
+ symbols__insert(&curr_map->dso->symbols[curr_map->type], pos);
}
count++;
}
@@ -438,15 +437,16 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
}
-static int kernel_maps__load_kallsyms(symbol_filter_t filter)
+static int dso__load_kallsyms(struct dso *self, struct map *map,
+ symbol_filter_t filter)
{
- if (kernel_maps__load_all_kallsyms())
+ if (dso__load_all_kallsyms(self, map) < 0)
return -1;
- symbols__fixup_end(&kernel_map__functions->dso->symbols[MAP__FUNCTION]);
- kernel_map__functions->dso->origin = DSO__ORIG_KERNEL;
+ symbols__fixup_end(&self->symbols[map->type]);
+ self->origin = DSO__ORIG_KERNEL;
- return kernel_maps__split_kallsyms(filter);
+ return dso__split_kallsyms(self, map, filter);
}
size_t kernel_maps__fprintf(FILE *fp)
@@ -1457,9 +1457,8 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
if (err <= 0) {
pr_info("The file %s cannot be used, "
"trying to use /proc/kallsyms...", self->long_name);
- sleep(2);
do_kallsyms:
- err = kernel_maps__load_kallsyms(filter);
+ err = dso__load_kallsyms(self, map, filter);
if (err > 0 && !is_kallsyms)
dso__set_long_name(self, strdup("[kernel.kallsyms]"));
}
@@ -1541,18 +1540,19 @@ size_t dsos__fprintf_buildid(FILE *fp)
static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
{
+ struct map *kmap;
struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]");
if (kernel == NULL)
return -1;
- kernel_map__functions = map__new2(0, kernel, MAP__FUNCTION);
- if (kernel_map__functions == NULL)
+ kmap = map__new2(0, kernel, MAP__FUNCTION);
+ if (kmap == NULL)
goto out_delete_kernel_dso;
- kernel_map__functions->map_ip = kernel_map__functions->unmap_ip = identity__map_ip;
- kernel->short_name = "[kernel]";
- kernel->kernel = 1;
+ kmap->map_ip = kmap->unmap_ip = identity__map_ip;
+ kernel->short_name = "[kernel]";
+ kernel->kernel = 1;
vdso = dso__new("[vdso]");
if (vdso == NULL)
@@ -1563,15 +1563,14 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
sizeof(kernel->build_id)) == 0)
kernel->has_build_id = true;
- kernel_maps__insert(kernel_map__functions);
+ kernel_maps__insert(kmap);
dsos__add(&dsos__kernel, kernel);
dsos__add(&dsos__user, vdso);
return 0;
out_delete_kernel_map:
- map__delete(kernel_map__functions);
- kernel_map__functions = NULL;
+ map__delete(kmap);
out_delete_kernel_dso:
dso__delete(kernel);
return -1;
--
cgit v1.2.3-70-g09d2
From 23ea4a3fadc6b1692dec935397ea15e2affc1cba Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:19 -0200
Subject: perf symbols: Kernel_maps should be an array of MAP__NR_TYPES entries
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
So that we can support multiple symbol table types.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-8-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 51 ++++++++++++++++++++++++++++++++++++------------
tools/perf/util/thread.h | 1 -
2 files changed, 38 insertions(+), 14 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 956656fcaab..581db4c4325 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -29,6 +29,7 @@ enum dso_origin {
};
static void dsos__add(struct list_head *head, struct dso *dso);
+static struct map *kernel_maps__find_by_dso_name(const char *name);
static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
static void kernel_maps__insert(struct map *map);
struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr);
@@ -43,7 +44,7 @@ static struct symbol_conf symbol_conf__defaults = {
.try_vmlinux_path = true,
};
-static struct rb_root kernel_maps__functions;
+static struct rb_root kernel_maps[MAP__NR_TYPES];
bool dso__loaded(const struct dso *self, enum map_type type)
{
@@ -78,10 +79,10 @@ static void symbols__fixup_end(struct rb_root *self)
curr->end = roundup(curr->start, 4096);
}
-static void kernel_maps__fixup_end(void)
+static void __kernel_maps__fixup_end(struct rb_root *root)
{
struct map *prev, *curr;
- struct rb_node *nd, *prevnd = rb_first(&kernel_maps__functions);
+ struct rb_node *nd, *prevnd = rb_first(root);
if (prevnd == NULL)
return;
@@ -101,6 +102,13 @@ static void kernel_maps__fixup_end(void)
curr->end = ~0UL;
}
+static void kernel_maps__fixup_end(void)
+{
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ __kernel_maps__fixup_end(&kernel_maps[i]);
+}
+
static struct symbol *symbol__new(u64 start, u64 len, const char *name)
{
size_t namelen = strlen(name) + 1;
@@ -449,12 +457,12 @@ static int dso__load_kallsyms(struct dso *self, struct map *map,
return dso__split_kallsyms(self, map, filter);
}
-size_t kernel_maps__fprintf(FILE *fp)
+static size_t __kernel_maps__fprintf(enum map_type type, FILE *fp)
{
- size_t printed = fprintf(fp, "Kernel maps:\n");
+ size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
struct rb_node *nd;
- for (nd = rb_first(&kernel_maps__functions); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&kernel_maps[type]); nd; nd = rb_next(nd)) {
struct map *pos = rb_entry(nd, struct map, rb_node);
printed += fprintf(fp, "Map:");
@@ -465,6 +473,16 @@ size_t kernel_maps__fprintf(FILE *fp)
}
}
+ return printed;
+}
+
+size_t kernel_maps__fprintf(FILE *fp)
+{
+ size_t printed = fprintf(fp, "Kernel maps:\n");
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ printed += __kernel_maps__fprintf(i, fp);
+
return printed + fprintf(fp, "END kernel maps\n");
}
@@ -1191,13 +1209,14 @@ out:
static void kernel_maps__insert(struct map *map)
{
- maps__insert(&kernel_maps__functions, map);
+ maps__insert(&kernel_maps[map->type], map);
}
-struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
- symbol_filter_t filter)
+static struct symbol *kernel_maps__find_symbol(u64 ip, enum map_type type,
+ struct map **mapp,
+ symbol_filter_t filter)
{
- struct map *map = maps__find(&kernel_maps__functions, ip);
+ struct map *map = maps__find(&kernel_maps[type], ip);
if (mapp)
*mapp = map;
@@ -1206,17 +1225,23 @@ struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
ip = map->map_ip(map, ip);
return map__find_symbol(map, ip, filter);
} else
- WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps__functions),
+ WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps[type]),
"Empty kernel_maps, was symbol__init() called?\n");
return NULL;
}
-struct map *kernel_maps__find_by_dso_name(const char *name)
+struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
+ symbol_filter_t filter)
+{
+ return kernel_maps__find_symbol(ip, MAP__FUNCTION, mapp, filter);
+}
+
+static struct map *kernel_maps__find_by_dso_name(const char *name)
{
struct rb_node *nd;
- for (nd = rb_first(&kernel_maps__functions); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&kernel_maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) {
struct map *map = rb_entry(nd, struct map, rb_node);
if (map->dso && strcmp(map->dso->name, name) == 0)
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 74cba6487ed..54580bb8000 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -28,7 +28,6 @@ struct map *maps__find(struct rb_root *maps, u64 ip);
struct symbol *kernel_maps__find_function(const u64 ip, struct map **mapp,
symbol_filter_t filter);
-struct map *kernel_maps__find_by_dso_name(const char *name);
static inline struct map *thread__find_map(struct thread *self, u64 ip)
{
--
cgit v1.2.3-70-g09d2
From 95011c600740837288a3b34b411244a4d9157c4e Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:20 -0200
Subject: perf symbols: Support multiple symtabs in struct thread
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Making the routines that were so far specific to the kernel maps
useful for all threads.
This is done by making the kernel maps be contained in a kernel
"thread".
This gets the kernel specific routines closer to the userspace
counterparts, which will help in reducing the boilerplate for
resolving a symbol, as will be demonstrated in the next patches.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-9-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 2 +-
tools/perf/builtin-report.c | 2 +-
tools/perf/builtin-top.c | 2 +-
tools/perf/util/symbol.c | 157 ++++++++++++++++--------------------------
tools/perf/util/symbol.h | 2 +-
tools/perf/util/thread.c | 115 ++++++++++++++++++++++++-------
tools/perf/util/thread.h | 15 ++--
7 files changed, 162 insertions(+), 133 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index c32e7609b77..3ebd70b1ef9 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -167,7 +167,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
map ? map->dso->long_name : "<not found>");
} else if (event->header.misc & PERF_RECORD_MISC_USER) {
level = '.';
- map = thread__find_map(thread, ip);
+ map = thread__find_map(thread, MAP__FUNCTION, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
sym = map__find_symbol(map, ip, symbol_filter);
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 400bef981c6..9bd20c2ee3d 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -422,7 +422,7 @@ resolve_symbol(struct thread *thread, struct map **mapp, u64 *ipp)
if (!thread)
return NULL;
- map = thread__find_map(thread, ip);
+ map = thread__find_map(thread, MAP__FUNCTION, ip);
if (map != NULL) {
/*
* We have to do this here as we may have a dso
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index abe78bbd154..bf6730c7603 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -945,7 +945,7 @@ static void event__process_sample(const event_t *self, int counter)
if (thread == NULL)
return;
- map = thread__find_map(thread, ip);
+ map = thread__find_map(thread, MAP__FUNCTION, ip);
if (map != NULL) {
ip = map->map_ip(map, ip);
sym = map__find_symbol(map, ip, symbol_filter);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 581db4c4325..b6a2941e778 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -29,12 +29,11 @@ enum dso_origin {
};
static void dsos__add(struct list_head *head, struct dso *dso);
-static struct map *kernel_maps__find_by_dso_name(const char *name);
+static struct map *thread__find_map_by_name(struct thread *self, char *name);
static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
-static void kernel_maps__insert(struct map *map);
struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
- symbol_filter_t filter);
+ struct thread *thread, symbol_filter_t filter);
unsigned int symbol__priv_size;
static int vmlinux_path__nr_entries;
static char **vmlinux_path;
@@ -44,7 +43,7 @@ static struct symbol_conf symbol_conf__defaults = {
.try_vmlinux_path = true,
};
-static struct rb_root kernel_maps[MAP__NR_TYPES];
+static struct thread kthread_mem, *kthread = &kthread_mem;
bool dso__loaded(const struct dso *self, enum map_type type)
{
@@ -79,10 +78,10 @@ static void symbols__fixup_end(struct rb_root *self)
curr->end = roundup(curr->start, 4096);
}
-static void __kernel_maps__fixup_end(struct rb_root *root)
+static void __thread__fixup_maps_end(struct thread *self, enum map_type type)
{
struct map *prev, *curr;
- struct rb_node *nd, *prevnd = rb_first(root);
+ struct rb_node *nd, *prevnd = rb_first(&self->maps[type]);
if (prevnd == NULL)
return;
@@ -102,11 +101,11 @@ static void __kernel_maps__fixup_end(struct rb_root *root)
curr->end = ~0UL;
}
-static void kernel_maps__fixup_end(void)
+static void thread__fixup_maps_end(struct thread *self)
{
int i;
for (i = 0; i < MAP__NR_TYPES; ++i)
- __kernel_maps__fixup_end(&kernel_maps[i]);
+ __thread__fixup_maps_end(self, i);
}
static struct symbol *symbol__new(u64 start, u64 len, const char *name)
@@ -274,25 +273,16 @@ size_t dso__fprintf_buildid(struct dso *self, FILE *fp)
return fprintf(fp, "%s", sbuild_id);
}
-static const char * map_type__name[MAP__NR_TYPES] = {
- [MAP__FUNCTION] = "Functions",
-};
-
-size_t dso__fprintf(struct dso *self, FILE *fp)
+size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp)
{
- int i;
struct rb_node *nd;
size_t ret = fprintf(fp, "dso: %s (", self->short_name);
ret += dso__fprintf_buildid(self, fp);
ret += fprintf(fp, ")\n");
- for (i = 0; i < MAP__NR_TYPES; ++i) {
- ret += fprintf(fp, "%s:\n", map_type__name[i]);
-
- for (nd = rb_first(&self->symbols[i]); nd; nd = rb_next(nd)) {
- struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
- ret += symbol__fprintf(pos, fp);
- }
+ for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) {
+ struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
+ ret += symbol__fprintf(pos, fp);
}
return ret;
@@ -373,7 +363,7 @@ out_failure:
* kernel range is broken in several maps, named [kernel].N, as we don't have
* the original ELF section names vmlinux have.
*/
-static int dso__split_kallsyms(struct dso *self, struct map *map,
+static int dso__split_kallsyms(struct dso *self, struct map *map, struct thread *thread,
symbol_filter_t filter)
{
struct map *curr_map = map;
@@ -394,10 +384,10 @@ static int dso__split_kallsyms(struct dso *self, struct map *map,
*module++ = '\0';
if (strcmp(self->name, module)) {
- curr_map = kernel_maps__find_by_dso_name(module);
+ curr_map = thread__find_map_by_name(thread, module);
if (curr_map == NULL) {
- pr_err("/proc/{kallsyms,modules} "
- "inconsistency!\n");
+ pr_debug("/proc/{kallsyms,modules} "
+ "inconsistency!\n");
return -1;
}
}
@@ -425,7 +415,7 @@ static int dso__split_kallsyms(struct dso *self, struct map *map,
}
curr_map->map_ip = curr_map->unmap_ip = identity__map_ip;
- kernel_maps__insert(curr_map);
+ __thread__insert_map(thread, curr_map);
++kernel_range;
}
@@ -446,7 +436,7 @@ static int dso__split_kallsyms(struct dso *self, struct map *map,
static int dso__load_kallsyms(struct dso *self, struct map *map,
- symbol_filter_t filter)
+ struct thread *thread, symbol_filter_t filter)
{
if (dso__load_all_kallsyms(self, map) < 0)
return -1;
@@ -454,35 +444,13 @@ static int dso__load_kallsyms(struct dso *self, struct map *map,
symbols__fixup_end(&self->symbols[map->type]);
self->origin = DSO__ORIG_KERNEL;
- return dso__split_kallsyms(self, map, filter);
-}
-
-static size_t __kernel_maps__fprintf(enum map_type type, FILE *fp)
-{
- size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
- struct rb_node *nd;
-
- for (nd = rb_first(&kernel_maps[type]); nd; nd = rb_next(nd)) {
- struct map *pos = rb_entry(nd, struct map, rb_node);
-
- printed += fprintf(fp, "Map:");
- printed += map__fprintf(pos, fp);
- if (verbose > 1) {
- printed += dso__fprintf(pos->dso, fp);
- printed += fprintf(fp, "--\n");
- }
- }
-
- return printed;
+ return dso__split_kallsyms(self, map, thread, filter);
}
size_t kernel_maps__fprintf(FILE *fp)
{
size_t printed = fprintf(fp, "Kernel maps:\n");
- int i;
- for (i = 0; i < MAP__NR_TYPES; ++i)
- printed += __kernel_maps__fprintf(i, fp);
-
+ printed += thread__fprintf_maps(kthread, fp);
return printed + fprintf(fp, "END kernel maps\n");
}
@@ -772,9 +740,9 @@ out:
return 0;
}
-static int dso__load_sym(struct dso *self, struct map *map, const char *name,
- int fd, symbol_filter_t filter, int kernel,
- int kmodule)
+static int dso__load_sym(struct dso *self, struct map *map,
+ struct thread *thread, const char *name, int fd,
+ symbol_filter_t filter, int kernel, int kmodule)
{
struct map *curr_map = map;
struct dso *curr_dso = self;
@@ -877,7 +845,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
snprintf(dso_name, sizeof(dso_name),
"%s%s", self->short_name, section_name);
- curr_map = kernel_maps__find_by_dso_name(dso_name);
+ curr_map = thread__find_map_by_name(thread, dso_name);
if (curr_map == NULL) {
u64 start = sym.st_value;
@@ -896,7 +864,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
curr_map->map_ip = identity__map_ip;
curr_map->unmap_ip = identity__map_ip;
curr_dso->origin = DSO__ORIG_KERNEL;
- kernel_maps__insert(curr_map);
+ __thread__insert_map(kthread, curr_map);
dsos__add(&dsos__kernel, curr_dso);
} else
curr_dso = curr_map->dso;
@@ -1121,7 +1089,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
dso__set_loaded(self, map->type);
if (self->kernel)
- return dso__load_kernel_sym(self, map, filter);
+ return dso__load_kernel_sym(self, map, kthread, filter);
name = malloc(size);
if (!name)
@@ -1186,7 +1154,7 @@ compare_build_id:
fd = open(name, O_RDONLY);
} while (fd < 0);
- ret = dso__load_sym(self, map, name, fd, filter, 0, 0);
+ ret = dso__load_sym(self, map, NULL, name, fd, filter, 0, 0);
close(fd);
/*
@@ -1207,16 +1175,11 @@ out:
return ret;
}
-static void kernel_maps__insert(struct map *map)
-{
- maps__insert(&kernel_maps[map->type], map);
-}
-
-static struct symbol *kernel_maps__find_symbol(u64 ip, enum map_type type,
- struct map **mapp,
- symbol_filter_t filter)
+static struct symbol *thread__find_symbol(struct thread *self, u64 ip,
+ enum map_type type, struct map **mapp,
+ symbol_filter_t filter)
{
- struct map *map = maps__find(&kernel_maps[type], ip);
+ struct map *map = thread__find_map(self, type, ip);
if (mapp)
*mapp = map;
@@ -1224,9 +1187,7 @@ static struct symbol *kernel_maps__find_symbol(u64 ip, enum map_type type,
if (map) {
ip = map->map_ip(map, ip);
return map__find_symbol(map, ip, filter);
- } else
- WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps[type]),
- "Empty kernel_maps, was symbol__init() called?\n");
+ }
return NULL;
}
@@ -1234,14 +1195,14 @@ static struct symbol *kernel_maps__find_symbol(u64 ip, enum map_type type,
struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
symbol_filter_t filter)
{
- return kernel_maps__find_symbol(ip, MAP__FUNCTION, mapp, filter);
+ return thread__find_symbol(kthread, ip, MAP__FUNCTION, mapp, filter);
}
-static struct map *kernel_maps__find_by_dso_name(const char *name)
+static struct map *thread__find_map_by_name(struct thread *self, char *name)
{
struct rb_node *nd;
- for (nd = rb_first(&kernel_maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&self->maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) {
struct map *map = rb_entry(nd, struct map, rb_node);
if (map->dso && strcmp(map->dso->name, name) == 0)
@@ -1285,7 +1246,7 @@ static int dsos__set_modules_path_dir(char *dirname)
(int)(dot - dent->d_name), dent->d_name);
strxfrchar(dso_name, '-', '_');
- map = kernel_maps__find_by_dso_name(dso_name);
+ map = thread__find_map_by_name(kthread, dso_name);
if (map == NULL)
continue;
@@ -1338,7 +1299,7 @@ static struct map *map__new2(u64 start, struct dso *dso, enum map_type type)
return self;
}
-static int kernel_maps__create_module_maps(void)
+static int thread__create_module_maps(struct thread *self)
{
char *line = NULL;
size_t n;
@@ -1395,7 +1356,7 @@ static int kernel_maps__create_module_maps(void)
dso->has_build_id = true;
dso->origin = DSO__ORIG_KMODULE;
- kernel_maps__insert(map);
+ __thread__insert_map(self, map);
dsos__add(&dsos__kernel, dso);
}
@@ -1410,7 +1371,7 @@ out_failure:
return -1;
}
-static int dso__load_vmlinux(struct dso *self, struct map *map,
+static int dso__load_vmlinux(struct dso *self, struct map *map, struct thread *thread,
const char *vmlinux, symbol_filter_t filter)
{
int err = -1, fd;
@@ -1444,15 +1405,14 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
return -1;
dso__set_loaded(self, map->type);
- err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0);
-
+ err = dso__load_sym(self, map, thread, self->long_name, fd, filter, 1, 0);
close(fd);
return err;
}
static int dso__load_kernel_sym(struct dso *self, struct map *map,
- symbol_filter_t filter)
+ struct thread *thread, symbol_filter_t filter)
{
int err;
bool is_kallsyms;
@@ -1462,8 +1422,8 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
pr_debug("Looking at the vmlinux_path (%d entries long)\n",
vmlinux_path__nr_entries);
for (i = 0; i < vmlinux_path__nr_entries; ++i) {
- err = dso__load_vmlinux(self, map, vmlinux_path[i],
- filter);
+ err = dso__load_vmlinux(self, map, thread,
+ vmlinux_path[i], filter);
if (err > 0) {
pr_debug("Using %s for symbols\n",
vmlinux_path[i]);
@@ -1478,12 +1438,12 @@ static int dso__load_kernel_sym(struct dso *self, struct map *map,
if (is_kallsyms)
goto do_kallsyms;
- err = dso__load_vmlinux(self, map, self->long_name, filter);
+ err = dso__load_vmlinux(self, map, thread, self->long_name, filter);
if (err <= 0) {
pr_info("The file %s cannot be used, "
"trying to use /proc/kallsyms...", self->long_name);
do_kallsyms:
- err = dso__load_kallsyms(self, map, filter);
+ err = dso__load_kallsyms(self, map, thread, filter);
if (err > 0 && !is_kallsyms)
dso__set_long_name(self, strdup("[kernel.kallsyms]"));
}
@@ -1535,8 +1495,11 @@ static void __dsos__fprintf(struct list_head *head, FILE *fp)
{
struct dso *pos;
- list_for_each_entry(pos, head, node)
- dso__fprintf(pos, fp);
+ list_for_each_entry(pos, head, node) {
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ dso__fprintf(pos, i, fp);
+ }
}
void dsos__fprintf(FILE *fp)
@@ -1563,10 +1526,10 @@ size_t dsos__fprintf_buildid(FILE *fp)
__dsos__fprintf_buildid(&dsos__user, fp));
}
-static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
+static int thread__create_kernel_map(struct thread *self, const char *vmlinux)
{
struct map *kmap;
- struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]");
+ struct dso *kernel = dso__new(vmlinux ?: "[kernel.kallsyms]");
if (kernel == NULL)
return -1;
@@ -1588,7 +1551,7 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
sizeof(kernel->build_id)) == 0)
kernel->has_build_id = true;
- kernel_maps__insert(kmap);
+ __thread__insert_map(self, kmap);
dsos__add(&dsos__kernel, kernel);
dsos__add(&dsos__user, vdso);
@@ -1656,32 +1619,28 @@ out_fail:
return -1;
}
-static int kernel_maps__init(const struct symbol_conf *conf)
+int symbol__init(struct symbol_conf *conf)
{
const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults;
+ elf_version(EV_CURRENT);
symbol__priv_size = pconf->priv_size;
+ thread__init(kthread, 0);
if (pconf->try_vmlinux_path && vmlinux_path__init() < 0)
return -1;
- if (kernel_maps__create_kernel_map(pconf) < 0) {
+ if (thread__create_kernel_map(kthread, pconf->vmlinux_name) < 0) {
vmlinux_path__exit();
return -1;
}
- if (pconf->use_modules && kernel_maps__create_module_maps() < 0)
+ if (pconf->use_modules && thread__create_module_maps(kthread) < 0)
pr_debug("Failed to load list of modules in use, "
"continuing...\n");
/*
* Now that we have all the maps created, just set the ->end of them:
*/
- kernel_maps__fixup_end();
+ thread__fixup_maps_end(kthread);
return 0;
}
-
-int symbol__init(struct symbol_conf *conf)
-{
- elf_version(EV_CURRENT);
- return kernel_maps__init(conf);
-}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 8934814d5a6..3f9e4a4d83d 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -92,7 +92,7 @@ void dsos__fprintf(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp);
size_t dso__fprintf_buildid(struct dso *self, FILE *fp);
-size_t dso__fprintf(struct dso *self, FILE *fp);
+size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp);
char dso__symtab_origin(const struct dso *self);
void dso__set_build_id(struct dso *self, void *build_id);
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 1796625f778..2229f82cd63 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -9,17 +9,26 @@
static struct rb_root threads;
static struct thread *last_match;
+void thread__init(struct thread *self, pid_t pid)
+{
+ int i;
+ self->pid = pid;
+ self->comm = NULL;
+ for (i = 0; i < MAP__NR_TYPES; ++i) {
+ self->maps[i] = RB_ROOT;
+ INIT_LIST_HEAD(&self->removed_maps[i]);
+ }
+}
+
static struct thread *thread__new(pid_t pid)
{
struct thread *self = zalloc(sizeof(*self));
if (self != NULL) {
- self->pid = pid;
+ thread__init(self, pid);
self->comm = malloc(32);
if (self->comm)
snprintf(self->comm, 32, ":%d", self->pid);
- self->maps = RB_ROOT;
- INIT_LIST_HEAD(&self->removed_maps);
}
return self;
@@ -44,24 +53,68 @@ int thread__comm_len(struct thread *self)
return self->comm_len;
}
-static size_t thread__fprintf(struct thread *self, FILE *fp)
+static const char *map_type__name[MAP__NR_TYPES] = {
+ [MAP__FUNCTION] = "Functions",
+};
+
+static size_t __thread__fprintf_maps(struct thread *self,
+ enum map_type type, FILE *fp)
{
+ size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
struct rb_node *nd;
- struct map *pos;
- size_t ret = fprintf(fp, "Thread %d %s\nCurrent maps:\n",
- self->pid, self->comm);
- for (nd = rb_first(&self->maps); nd; nd = rb_next(nd)) {
- pos = rb_entry(nd, struct map, rb_node);
- ret += map__fprintf(pos, fp);
+ for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
+ struct map *pos = rb_entry(nd, struct map, rb_node);
+ printed += fprintf(fp, "Map:");
+ printed += map__fprintf(pos, fp);
+ if (verbose > 1) {
+ printed += dso__fprintf(pos->dso, type, fp);
+ printed += fprintf(fp, "--\n");
+ }
}
- ret = fprintf(fp, "Removed maps:\n");
+ return printed;
+}
+
+size_t thread__fprintf_maps(struct thread *self, FILE *fp)
+{
+ size_t printed = 0, i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ printed += __thread__fprintf_maps(self, i, fp);
+ return printed;
+}
- list_for_each_entry(pos, &self->removed_maps, node)
- ret += map__fprintf(pos, fp);
+static size_t __thread__fprintf_removed_maps(struct thread *self,
+ enum map_type type, FILE *fp)
+{
+ struct map *pos;
+ size_t printed = 0;
+
+ list_for_each_entry(pos, &self->removed_maps[type], node) {
+ printed += fprintf(fp, "Map:");
+ printed += map__fprintf(pos, fp);
+ if (verbose > 1) {
+ printed += dso__fprintf(pos->dso, type, fp);
+ printed += fprintf(fp, "--\n");
+ }
+ }
+ return printed;
+}
- return ret;
+static size_t thread__fprintf_removed_maps(struct thread *self, FILE *fp)
+{
+ size_t printed = 0, i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ printed += __thread__fprintf_removed_maps(self, i, fp);
+ return printed;
+}
+
+static size_t thread__fprintf(struct thread *self, FILE *fp)
+{
+ size_t printed = fprintf(fp, "Thread %d %s\n", self->pid, self->comm);
+ printed += thread__fprintf_removed_maps(self, fp);
+ printed += fprintf(fp, "Removed maps:\n");
+ return printed + thread__fprintf_removed_maps(self, fp);
}
struct thread *threads__findnew(pid_t pid)
@@ -117,7 +170,8 @@ struct thread *register_idle_thread(void)
static void thread__remove_overlappings(struct thread *self, struct map *map)
{
- struct rb_node *next = rb_first(&self->maps);
+ struct rb_root *root = &self->maps[map->type];
+ struct rb_node *next = rb_first(root);
while (next) {
struct map *pos = rb_entry(next, struct map, rb_node);
@@ -132,13 +186,13 @@ static void thread__remove_overlappings(struct thread *self, struct map *map)
map__fprintf(pos, stderr);
}
- rb_erase(&pos->rb_node, &self->maps);
+ rb_erase(&pos->rb_node, root);
/*
* We may have references to this map, for instance in some
* hist_entry instances, so just move them to a separate
* list.
*/
- list_add_tail(&pos->node, &self->removed_maps);
+ list_add_tail(&pos->node, &self->removed_maps[map->type]);
}
}
@@ -185,12 +239,26 @@ struct map *maps__find(struct rb_root *maps, u64 ip)
void thread__insert_map(struct thread *self, struct map *map)
{
thread__remove_overlappings(self, map);
- maps__insert(&self->maps, map);
+ maps__insert(&self->maps[map->type], map);
}
-int thread__fork(struct thread *self, struct thread *parent)
+static int thread__clone_maps(struct thread *self, struct thread *parent,
+ enum map_type type)
{
struct rb_node *nd;
+ for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) {
+ struct map *map = rb_entry(nd, struct map, rb_node);
+ struct map *new = map__clone(map);
+ if (new == NULL)
+ return -ENOMEM;
+ thread__insert_map(self, new);
+ }
+ return 0;
+}
+
+int thread__fork(struct thread *self, struct thread *parent)
+{
+ int i;
if (self->comm)
free(self->comm);
@@ -198,14 +266,9 @@ int thread__fork(struct thread *self, struct thread *parent)
if (!self->comm)
return -ENOMEM;
- for (nd = rb_first(&parent->maps); nd; nd = rb_next(nd)) {
- struct map *map = rb_entry(nd, struct map, rb_node);
- struct map *new = map__clone(map);
- if (!new)
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ if (thread__clone_maps(self, parent, i) < 0)
return -ENOMEM;
- thread__insert_map(self, new);
- }
-
return 0;
}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 54580bb8000..3bdd9b2276f 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -7,20 +7,22 @@
struct thread {
struct rb_node rb_node;
- struct rb_root maps;
- struct list_head removed_maps;
+ struct rb_root maps[MAP__NR_TYPES];
+ struct list_head removed_maps[MAP__NR_TYPES];
pid_t pid;
char shortname[3];
char *comm;
int comm_len;
};
+void thread__init(struct thread *self, pid_t pid);
int thread__set_comm(struct thread *self, const char *comm);
int thread__comm_len(struct thread *self);
struct thread *threads__findnew(pid_t pid);
struct thread *register_idle_thread(void);
void thread__insert_map(struct thread *self, struct map *map);
int thread__fork(struct thread *self, struct thread *parent);
+size_t thread__fprintf_maps(struct thread *self, FILE *fp);
size_t threads__fprintf(FILE *fp);
void maps__insert(struct rb_root *maps, struct map *map);
@@ -29,9 +31,14 @@ struct map *maps__find(struct rb_root *maps, u64 ip);
struct symbol *kernel_maps__find_function(const u64 ip, struct map **mapp,
symbol_filter_t filter);
-static inline struct map *thread__find_map(struct thread *self, u64 ip)
+static inline struct map *thread__find_map(struct thread *self,
+ enum map_type type, u64 ip)
{
- return self ? maps__find(&self->maps, ip) : NULL;
+ return self ? maps__find(&self->maps[type], ip) : NULL;
}
+static inline void __thread__insert_map(struct thread *self, struct map *map)
+{
+ maps__insert(&self->maps[map->type], map);
+}
#endif /* __PERF_THREAD_H */
--
cgit v1.2.3-70-g09d2
From 1de8e24520ffdcf2a90c842eed937f59079a2abd Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:21 -0200
Subject: perf symbols: When not using modules, discard its symbols
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-10-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/symbol.c | 6 +++++-
tools/perf/util/thread.h | 1 +
2 files changed, 6 insertions(+), 1 deletion(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b6a2941e778..b788c2f5d67 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -381,6 +381,9 @@ static int dso__split_kallsyms(struct dso *self, struct map *map, struct thread
module = strchr(pos->name, '\t');
if (module) {
+ if (!thread->use_modules)
+ goto discard_symbol;
+
*module++ = '\0';
if (strcmp(self->name, module)) {
@@ -420,7 +423,7 @@ static int dso__split_kallsyms(struct dso *self, struct map *map, struct thread
}
if (filter && filter(curr_map, pos)) {
- rb_erase(&pos->rb_node, root);
+discard_symbol: rb_erase(&pos->rb_node, root);
symbol__delete(pos);
} else {
if (curr_map != map) {
@@ -1635,6 +1638,7 @@ int symbol__init(struct symbol_conf *conf)
return -1;
}
+ kthread->use_modules = pconf->use_modules;
if (pconf->use_modules && thread__create_module_maps(kthread) < 0)
pr_debug("Failed to load list of modules in use, "
"continuing...\n");
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 3bdd9b2276f..59b0d9b577d 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -10,6 +10,7 @@ struct thread {
struct rb_root maps[MAP__NR_TYPES];
struct list_head removed_maps[MAP__NR_TYPES];
pid_t pid;
+ bool use_modules;
char shortname[3];
char *comm;
int comm_len;
--
cgit v1.2.3-70-g09d2
From 1ed091c45ae33b2179d387573c3fe3f3b4adf60a Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 27 Nov 2009 16:29:23 -0200
Subject: perf tools: Consolidate symbol resolving across all tools
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Now we have a very high level routine for simple tools to
process IP sample events:
int event__preprocess_sample(const event_t *self,
struct addr_location *al,
symbol_filter_t filter)
It receives the event itself and will insert new threads in the
global threads list and resolve the map and symbol, filling all
this info into the new addr_location struct, so that tools like
annotate and report can further process the event by creating
hist_entries in their specific way (with or without callgraphs,
etc).
It in turn uses the new next layer function:
void thread__find_addr_location(struct thread *self, u8 cpumode,
enum map_type type, u64 addr,
struct addr_location *al,
symbol_filter_t filter)
This one will, given a thread (userspace or the kernel kthread
one), will find the given type (MAP__FUNCTION now, MAP__VARIABLE
too in the near future) at the given cpumode, taking vdsos into
account (userspace hit, but kernel symbol) and will fill all
these details in the addr_location given.
Tools that need a more compact API for plain function
resolution, like 'kmem', can use this other one:
struct symbol *thread__find_function(struct thread *self, u64 addr,
symbol_filter_t filter)
So, to resolve a kernel symbol, that is all the 'kmem' tool
needs, its just a matter of calling:
sym = thread__find_function(kthread, addr, NULL);
The 'filter' parameter is needed because we do lazy
parsing/loading of ELF symtabs or /proc/kallsyms.
With this we remove more code duplication all around, which is
always good, huh? :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-12-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-annotate.c | 55 +++--------------
tools/perf/builtin-kmem.c | 2 +-
tools/perf/builtin-report.c | 135 ++++++++++++------------------------------
tools/perf/builtin-top.c | 44 +++-----------
tools/perf/util/event.c | 62 +++++++++++++++++++
tools/perf/util/event.h | 4 ++
tools/perf/util/hist.c | 15 +++--
tools/perf/util/hist.h | 6 +-
tools/perf/util/symbol.c | 26 +-------
tools/perf/util/symbol.h | 10 ++++
tools/perf/util/thread.c | 12 ++++
tools/perf/util/thread.h | 23 +++++--
12 files changed, 172 insertions(+), 222 deletions(-)
(limited to 'tools/perf/util/symbol.c')
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 7d39bd2b19b..7f85c6e159a 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -124,71 +124,30 @@ static void hist_hit(struct hist_entry *he, u64 ip)
h->ip[offset]);
}
-static int hist_entry__add(struct thread *thread, struct map *map,
- struct symbol *sym, u64 ip, u64 count, char level)
+static int hist_entry__add(struct addr_location *al, u64 count)
{
bool hit;
- struct hist_entry *he = __hist_entry__add(thread, map, sym, NULL, ip,
- count, level, &hit);
+ struct hist_entry *he = __hist_entry__add(al, NULL, count, &hit);
if (he == NULL)
return -ENOMEM;
- hist_hit(he, ip);
+ hist_hit(he, al->addr);
return 0;
}
static int process_sample_event(event_t *event)
{
- char level;
- u64 ip = event->ip.ip;
- struct map *map = NULL;
- struct symbol *sym = NULL;
- struct thread *thread = threads__findnew(event->ip.pid);
+ struct addr_location al;
dump_printf("(IP, %d): %d: %p\n", event->header.misc,
- event->ip.pid, (void *)(long)ip);
+ event->ip.pid, (void *)(long)event->ip.ip);
- if (thread == NULL) {
+ if (event__preprocess_sample(event, &al, symbol_filter) < 0) {
fprintf(stderr, "problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
- dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
-
- if (event->header.misc & PERF_RECORD_MISC_KERNEL) {
- level = 'k';
- sym = kernel_maps__find_function(ip, &map, symbol_filter);
- dump_printf(" ...... dso: %s\n",
- map ? map->dso->long_name : "<not found>");
- } else if (event->header.misc & PERF_RECORD_MISC_USER) {
- level = '.';
- map = thread__find_map(thread, MAP__FUNCTION, ip);
- if (map != NULL) {
- ip = map->map_ip(map, ip);
- sym = map__find_symbol(map, ip, symbol_filter);
- } else {
- /*
- * If this is outside of all known maps,
- * and is a negative address, try to look it
- * up in the kernel dso, as it might be a
- * vsyscall or vdso (which executes in user-mode).
- *
- * XXX This is nasty, we should have a symbol list in
- * the "[vdso]" dso, but for now lets use the old
- * trick of looking in the whole kernel symbol list.
- */
- if ((long long)ip < 0)
- sym = kernel_maps__find_function(ip, &map,
- symbol_filter);
- }
- dump_printf(" ...... dso: %s\n",
- map ? map->dso->long_name : "<not found>");
- } else {
- level = 'H';
- dump_printf(" ...... dso: [hypervisor]\n");
- }
-
- if (hist_entry__add(thread, map, sym, ip, 1, level)) {
+ if (hist_entry__add(&al, 1)) {
fprintf(stderr, "problem incrementing symbol count, "
"skipping event\n");
return -1;
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index e7294c8fc62..047fef74bd5 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -420,7 +420,7 @@ static void __print_result(struct rb_root *root, int n_lines, int is_caller)
if (is_caller) {
addr = data->call_site;
if (!raw_ip)
- sym = kernel_maps__find_function(addr, NULL, NULL);
+ sym = thread__find_function(kthread, addr, NULL);
} else
addr = data->ptr;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 01ef35cac5f..383c4ab4f9a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -408,55 +408,6 @@ static int thread__set_comm_adjust(struct thread *self, const char *comm)
return 0;
}
-
-static struct symbol *
-resolve_symbol(struct thread *thread, struct map **mapp, u64 *ipp)
-{
- struct map *map = mapp ? *mapp : NULL;
- u64 ip = *ipp;
-
- if (map)
- goto got_map;
-
- if (!thread)
- return NULL;
-
- map = thread__find_map(thread, MAP__FUNCTION, ip);
- if (map != NULL) {
- /*
- * We have to do this here as we may have a dso
- * with no symbol hit that has a name longer than
- * the ones with symbols sampled.
- */
- if (!sort_dso.elide && !map->dso->slen_calculated)
- dso__calc_col_width(map->dso);
-
- if (mapp)
- *mapp = map;
-got_map:
- ip = map->map_ip(map, ip);
- } else {
- /*
- * If this is outside of all known maps,
- * and is a negative address, try to look it
- * up in the kernel dso, as it might be a
- * vsyscall or vdso (which executes in user-mode).
- *
- * XXX This is nasty, we should have a symbol list in
- * the "[vdso]" dso, but for now lets use the old
- * trick of looking in the whole kernel symbol list.
- */
- if ((long long)ip < 0)
- return kernel_maps__find_function(ip, mapp, NULL);
- }
- dump_printf(" ...... dso: %s\n",
- map ? map->dso->long_name : "<not found>");
- dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
- *ipp = ip;
-
- return map ? map__find_symbol(map, ip, NULL) : NULL;
-}
-
static int call__match(struct symbol *sym)
{
if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
@@ -469,7 +420,7 @@ static struct symbol **resolve_callchain(struct thread *thread,
struct ip_callchain *chain,
struct symbol **parent)
{
- u64 context = PERF_CONTEXT_MAX;
+ u8 cpumode = PERF_RECORD_MISC_USER;
struct symbol **syms = NULL;
unsigned int i;
@@ -483,30 +434,31 @@ static struct symbol **resolve_callchain(struct thread *thread,
for (i = 0; i < chain->nr; i++) {
u64 ip = chain->ips[i];
- struct symbol *sym = NULL;
+ struct addr_location al;
if (ip >= PERF_CONTEXT_MAX) {
- context = ip;
+ switch (ip) {
+ case PERF_CONTEXT_HV:
+ cpumode = PERF_RECORD_MISC_HYPERVISOR; break;
+ case PERF_CONTEXT_KERNEL:
+ cpumode = PERF_RECORD_MISC_KERNEL; break;
+ case PERF_CONTEXT_USER:
+ cpumode = PERF_RECORD_MISC_USER; break;
+ default:
+ break;
+ }
continue;
}
- switch (context) {
- case PERF_CONTEXT_HV:
- break;
- case PERF_CONTEXT_KERNEL:
- sym = kernel_maps__find_function(ip, NULL, NULL);
- break;
- default:
- sym = resolve_symbol(thread, NULL, &ip);
- break;
- }
-
- if (sym) {
- if (sort__has_parent && !*parent && call__match(sym))
- *parent = sym;
+ thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
+ ip, &al, NULL);
+ if (al.sym != NULL) {
+ if (sort__has_parent && !*parent &&
+ call__match(al.sym))
+ *parent = al.sym;
if (!callchain)
break;
- syms[i] = sym;
+ syms[i] = al.sym;
}
}
@@ -517,20 +469,17 @@ static struct symbol **resolve_callchain(struct thread *thread,
* collect histogram counts
*/
-static int
-hist_entry__add(struct thread *thread, struct map *map,
- struct symbol *sym, u64 ip, struct ip_callchain *chain,
- char level, u64 count)
+static int hist_entry__add(struct addr_location *al,
+ struct ip_callchain *chain, u64 count)
{
struct symbol **syms = NULL, *parent = NULL;
bool hit;
struct hist_entry *he;
if ((sort__has_parent || callchain) && chain)
- syms = resolve_callchain(thread, chain, &parent);
+ syms = resolve_callchain(al->thread, chain, &parent);
- he = __hist_entry__add(thread, map, sym, parent,
- ip, count, level, &hit);
+ he = __hist_entry__add(al, parent, count, &hit);
if (he == NULL)
return -ENOMEM;
@@ -656,14 +605,12 @@ static int validate_chain(struct ip_callchain *chain, event_t *event)
static int process_sample_event(event_t *event)
{
- char level;
- struct symbol *sym = NULL;
u64 ip = event->ip.ip;
u64 period = 1;
- struct map *map = NULL;
void *more_data = event->ip.__more_data;
struct ip_callchain *chain = NULL;
int cpumode;
+ struct addr_location al;
struct thread *thread = threads__findnew(event->ip.pid);
if (sample_type & PERF_SAMPLE_PERIOD) {
@@ -709,32 +656,26 @@ static int process_sample_event(event_t *event)
cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
- if (cpumode == PERF_RECORD_MISC_KERNEL) {
- level = 'k';
- sym = kernel_maps__find_function(ip, &map, NULL);
- dump_printf(" ...... dso: %s\n",
- map ? map->dso->long_name : "<not found>");
- } else if (cpumode == PERF_RECORD_MISC_USER) {
- level = '.';
- sym = resolve_symbol(thread, &map, &ip);
-
- } else {
- level = 'H';
- dump_printf(" ...... dso: [hypervisor]\n");
- }
+ thread__find_addr_location(thread, cpumode,
+ MAP__FUNCTION, ip, &al, NULL);
+ /*
+ * We have to do this here as we may have a dso with no symbol hit that
+ * has a name longer than the ones with symbols sampled.
+ */
+ if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
+ dso__calc_col_width(al.map->dso);
if (dso_list &&
- (!map || !map->dso ||
- !(strlist__has_entry(dso_list, map->dso->short_name) ||
- (map->dso->short_name != map->dso->long_name &&
- strlist__has_entry(dso_list, map->dso->long_name)))))
+ (!al.map || !al.map->dso ||
+ !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
+ (al.map->dso->short_name != al.map->dso->long_name &&
+ strlist__has_entry(dso_list, al.map->dso->long_name)))))
return 0;
- if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
+ if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
return 0;
- if (hist_entry__add(thread, map, sym, ip,
- chain, level, period)) {
+ if (hist_entry__add(&al, chain, period)) {
pr_debug("problem incrementing symbol count, skipping event\n");
return -1;
}
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 7a3c0c7aad3..e0a374d0e43 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -929,55 +929,28 @@ static int symbol_filter(struct map *map, struct symbol *sym)
static void event__process_sample(const event_t *self, int counter)
{
u64 ip = self->ip.ip;
- struct map *map;
struct sym_entry *syme;
- struct symbol *sym;
+ struct addr_location al;
u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
switch (origin) {
- case PERF_RECORD_MISC_USER: {
- struct thread *thread;
-
+ case PERF_RECORD_MISC_USER:
if (hide_user_symbols)
return;
-
- thread = threads__findnew(self->ip.pid);
- if (thread == NULL)
- return;
-
- map = thread__find_map(thread, MAP__FUNCTION, ip);
- if (map != NULL) {
- ip = map->map_ip(map, ip);
- sym = map__find_symbol(map, ip, symbol_filter);
- if (sym == NULL)
- return;
- userspace_samples++;
- break;
- }
- }
- /*
- * If this is outside of all known maps,
- * and is a negative address, try to look it
- * up in the kernel dso, as it might be a
- * vsyscall or vdso (which executes in user-mode).
- */
- if ((long long)ip >= 0)
- return;
- /* Fall thru */
+ break;
case PERF_RECORD_MISC_KERNEL:
if (hide_kernel_symbols)
return;
-
- sym = kernel_maps__find_function(ip, &map, symbol_filter);
- if (sym == NULL)
- return;
break;
default:
return;
}
- syme = symbol__priv(sym);
+ if (event__preprocess_sample(self, &al, symbol_filter) < 0 ||
+ al.sym == NULL)
+ return;
+ syme = symbol__priv(al.sym);
if (!syme->skip) {
syme->count[counter]++;
syme->origin = origin;
@@ -986,8 +959,9 @@ static void event__process_sample(const event_t *self, int counter)
if (list_empty(&syme->node) || !syme->node.next)
__list_insert_active_sym(syme);
pthread_mutex_unlock(&active_symbols_lock);
+ if (origin == PERF_RECORD_MISC_USER)
+ ++userspace_samples;
++samples;
- return;
}
}
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 70b4aa03b47..233d7ad9bd7 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -249,3 +249,65 @@ int event__process_task(event_t *self)
return 0;
}
+
+void thread__find_addr_location(struct thread *self, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al,
+ symbol_filter_t filter)
+{
+ struct thread *thread = al->thread = self;
+
+ al->addr = addr;
+
+ if (cpumode & PERF_RECORD_MISC_KERNEL) {
+ al->level = 'k';
+ thread = kthread;
+ } else if (cpumode & PERF_RECORD_MISC_USER)
+ al->level = '.';
+ else {
+ al->level = 'H';
+ al->map = NULL;
+ al->sym = NULL;
+ return;
+ }
+try_again:
+ al->map = thread__find_map(thread, type, al->addr);
+ if (al->map == NULL) {
+ /*
+ * If this is outside of all known maps, and is a negative
+ * address, try to look it up in the kernel dso, as it might be
+ * a vsyscall or vdso (which executes in user-mode).
+ *
+ * XXX This is nasty, we should have a symbol list in the
+ * "[vdso]" dso, but for now lets use the old trick of looking
+ * in the whole kernel symbol list.
+ */
+ if ((long long)al->addr < 0 && thread != kthread) {
+ thread = kthread;
+ goto try_again;
+ }
+ al->sym = NULL;
+ } else {
+ al->addr = al->map->map_ip(al->map, al->addr);
+ al->sym = map__find_symbol(al->map, al->addr, filter);
+ }
+}
+
+int event__preprocess_sample(const event_t *self, struct addr_location *al,
+ symbol_filter_t filter)
+{
+ u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct thread *thread = threads__findnew(self->ip.pid);
+
+ if (thread == NULL)
+ return -1;
+
+ dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
+
+ thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
+ self->ip.ip, al, filter);
+ dump_printf(" ...... dso: %s\n",
+ al->map ? al->map->dso->long_name :
+ al->level == 'H' ? "[hypervisor]" : "<not found>");
+ return 0;
+}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 13c12c75f97..a4cc8105cf6 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -152,4 +152,8 @@ int event__process_lost(event_t *self);
int event__process_mmap(event_t *self);
int event__process_task(event_t *self);
+struct addr_location;
+int event__preprocess_sample(const event_t *self, struct addr_location *al,
+ symbol_filter_t filter);
+
#endif /* __PERF_RECORD_H */
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index f26cd9ba00f..0ebf6ee16ca 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -14,20 +14,19 @@ struct callchain_param callchain_param = {
* histogram, sorted on item, collects counts
*/
-struct hist_entry *__hist_entry__add(struct thread *thread, struct map *map,
- struct symbol *sym,
+struct hist_entry *__hist_entry__add(struct addr_location *al,
struct symbol *sym_parent,
- u64 ip, u64 count, char level, bool *hit)
+ u64 count, bool *hit)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
struct hist_entry *he;
struct hist_entry entry = {
- .thread = thread,
- .map = map,
- .sym = sym,
- .ip = ip,
- .level = level,
+ .thread = al->thread,
+ .map = al->map,
+ .sym = al->sym,
+ .ip = al->addr,
+ .level = al->level,
.count = count,
.parent = sym_parent,
};
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index ac2149c559b..3020db0c929 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -36,9 +36,9 @@ extern unsigned long total_fork;
extern unsigned long total_unknown;
extern unsigned long total_lost;
-struct hist_entry *__hist_entry__add(struct thread *thread, struct map *map,
- struct symbol *sym, struct symbol *parent,
- u64 ip, u64 count, char level, bool *hit);
+struct hist_entry *__hist_entry__add(struct addr_location *al,
+ struct symbol *parent,
+ u64 count, bool *hit);
extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
extern void hist_entry__free(struct hist_entry *);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b788c2f5d67..fffcb937cdc 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -43,7 +43,8 @@ static struct symbol_conf symbol_conf__defaults = {
.try_vmlinux_path = true,
};
-static struct thread kthread_mem, *kthread = &kthread_mem;
+static struct thread kthread_mem;
+struct thread *kthread = &kthread_mem;
bool dso__loaded(const struct dso *self, enum map_type type)
{
@@ -1178,29 +1179,6 @@ out:
return ret;
}
-static struct symbol *thread__find_symbol(struct thread *self, u64 ip,
- enum map_type type, struct map **mapp,
- symbol_filter_t filter)
-{
- struct map *map = thread__find_map(self, type, ip);
-
- if (mapp)
- *mapp = map;
-
- if (map) {
- ip = map->map_ip(map, ip);
- return map__find_symbol(map, ip, filter);
- }
-
- return NULL;
-}
-
-struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp,
- symbol_filter_t filter)
-{
- return thread__find_symbol(kthread, ip, MAP__FUNCTION, mapp, filter);
-}
-
static struct map *thread__find_map_by_name(struct thread *self, char *name)
{
struct rb_node *nd;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 3f9e4a4d83d..17003efa0b3 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -63,6 +63,14 @@ static inline void *symbol__priv(struct symbol *self)
return ((void *)self) - symbol__priv_size;
}
+struct addr_location {
+ struct thread *thread;
+ struct map *map;
+ struct symbol *sym;
+ u64 addr;
+ char level;
+};
+
struct dso {
struct list_head node;
struct rb_root symbols[MAP__NR_TYPES];
@@ -105,6 +113,8 @@ size_t kernel_maps__fprintf(FILE *fp);
int symbol__init(struct symbol_conf *conf);
+struct thread;
+struct thread *kthread;
extern struct list_head dsos__user, dsos__kernel;
extern struct dso *vdso;
#endif /* __PERF_SYMBOL */
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 2229f82cd63..603f5610861 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -285,3 +285,15 @@ size_t threads__fprintf(FILE *fp)
return ret;
}
+
+struct symbol *thread__find_symbol(struct thread *self,
+ enum map_type type, u64 addr,
+ symbol_filter_t filter)
+{
+ struct map *map = thread__find_map(self, type, addr);
+
+ if (map != NULL)
+ return map__find_symbol(map, map->map_ip(map, addr), filter);
+
+ return NULL;
+}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 59b0d9b577d..686d6e914d9 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -27,19 +27,30 @@ size_t thread__fprintf_maps(struct thread *self, FILE *fp);
size_t threads__fprintf(FILE *fp);
void maps__insert(struct rb_root *maps, struct map *map);
-struct map *maps__find(struct rb_root *maps, u64 ip);
-
-struct symbol *kernel_maps__find_function(const u64 ip, struct map **mapp,
- symbol_filter_t filter);
+struct map *maps__find(struct rb_root *maps, u64 addr);
static inline struct map *thread__find_map(struct thread *self,
- enum map_type type, u64 ip)
+ enum map_type type, u64 addr)
{
- return self ? maps__find(&self->maps[type], ip) : NULL;
+ return self ? maps__find(&self->maps[type], addr) : NULL;
}
static inline void __thread__insert_map(struct thread *self, struct map *map)
{
maps__insert(&self->maps[map->type], map);
}
+
+void thread__find_addr_location(struct thread *self, u8 cpumode,
+ enum map_type type, u64 addr,
+ struct addr_location *al,
+ symbol_filter_t filter);
+struct symbol *thread__find_symbol(struct thread *self,
+ enum map_type type, u64 addr,
+ symbol_filter_t filter);
+
+static inline struct symbol *
+thread__find_function(struct thread *self, u64 addr, symbol_filter_t filter)
+{
+ return thread__find_symbol(self, MAP__FUNCTION, addr, filter);
+}
#endif /* __PERF_THREAD_H */
--
cgit v1.2.3-70-g09d2