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-rw-r--r--tools/perf/builtin-top.c95
1 files changed, 72 insertions, 23 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e3c63aef8ef..6031dce0429 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -42,6 +42,7 @@
#include "util/debug.h"
#include <assert.h>
+#include <elf.h>
#include <fcntl.h>
#include <stdio.h>
@@ -59,6 +60,7 @@
#include <sys/prctl.h>
#include <sys/wait.h>
#include <sys/uio.h>
+#include <sys/utsname.h>
#include <sys/mman.h>
#include <linux/unistd.h>
@@ -162,12 +164,40 @@ static void __zero_source_counters(struct hist_entry *he)
symbol__annotate_zero_histograms(sym);
}
+static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
+{
+ struct utsname uts;
+ int err = uname(&uts);
+
+ ui__warning("Out of bounds address found:\n\n"
+ "Addr: %" PRIx64 "\n"
+ "DSO: %s %c\n"
+ "Map: %" PRIx64 "-%" PRIx64 "\n"
+ "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n"
+ "Arch: %s\n"
+ "Kernel: %s\n"
+ "Tools: %s\n\n"
+ "Not all samples will be on the annotation output.\n\n"
+ "Please report to linux-kernel@vger.kernel.org\n",
+ ip, map->dso->long_name, dso__symtab_origin(map->dso),
+ map->start, map->end, sym->start, sym->end,
+ sym->binding == STB_GLOBAL ? 'g' :
+ sym->binding == STB_LOCAL ? 'l' : 'w', sym->name,
+ err ? "[unknown]" : uts.machine,
+ err ? "[unknown]" : uts.release, perf_version_string);
+ if (use_browser <= 0)
+ sleep(5);
+
+ map->erange_warned = true;
+}
+
static void perf_top__record_precise_ip(struct perf_top *top,
struct hist_entry *he,
int counter, u64 ip)
{
struct annotation *notes;
struct symbol *sym;
+ int err;
if (he == NULL || he->ms.sym == NULL ||
((top->sym_filter_entry == NULL ||
@@ -189,9 +219,12 @@ static void perf_top__record_precise_ip(struct perf_top *top,
}
ip = he->ms.map->map_ip(he->ms.map, ip);
- symbol__inc_addr_samples(sym, he->ms.map, counter, ip);
+ err = symbol__inc_addr_samples(sym, he->ms.map, counter, ip);
pthread_mutex_unlock(&notes->lock);
+
+ if (err == -ERANGE && !he->ms.map->erange_warned)
+ ui__warn_map_erange(he->ms.map, sym, ip);
}
static void perf_top__show_details(struct perf_top *top)
@@ -555,7 +588,7 @@ static void *display_thread_tui(void *arg)
* via --uid.
*/
list_for_each_entry(pos, &top->evlist->entries, node)
- pos->hists.uid_filter_str = top->uid_str;
+ pos->hists.uid_filter_str = top->target.uid_str;
perf_evlist__tui_browse_hists(top->evlist, help,
perf_top__sort_new_samples,
@@ -615,6 +648,7 @@ process_hotkey:
/* Tag samples to be skipped. */
static const char *skip_symbols[] = {
+ "intel_idle",
"default_idle",
"native_safe_halt",
"cpu_idle",
@@ -866,6 +900,9 @@ static void perf_top__start_counters(struct perf_top *top)
attr->read_format |= PERF_FORMAT_ID;
}
+ if (perf_target__has_cpu(&top->target))
+ attr->sample_type |= PERF_SAMPLE_CPU;
+
if (symbol_conf.use_callchain)
attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
@@ -914,6 +951,10 @@ try_again:
attr->type = PERF_TYPE_SOFTWARE;
attr->config = PERF_COUNT_SW_CPU_CLOCK;
+ if (counter->name) {
+ free(counter->name);
+ counter->name = strdup(event_name(counter));
+ }
goto try_again;
}
@@ -982,7 +1023,7 @@ static int __cmd_top(struct perf_top *top)
if (ret)
goto out_delete;
- if (top->target_tid || top->uid != UINT_MAX)
+ if (perf_target__has_task(&top->target))
perf_event__synthesize_thread_map(&top->tool, top->evlist->threads,
perf_event__process,
&top->session->host_machine);
@@ -1116,14 +1157,17 @@ static const char * const top_usage[] = {
int cmd_top(int argc, const char **argv, const char *prefix __used)
{
struct perf_evsel *pos;
- int status = -ENOMEM;
+ int status;
+ char errbuf[BUFSIZ];
struct perf_top top = {
.count_filter = 5,
.delay_secs = 2,
- .uid = UINT_MAX,
- .freq = 1000, /* 1 KHz */
+ .freq = 4000, /* 4 KHz */
.mmap_pages = 128,
.sym_pcnt_filter = 5,
+ .target = {
+ .uses_mmap = true,
+ },
};
char callchain_default_opt[] = "fractal,0.5,callee";
const struct option options[] = {
@@ -1132,13 +1176,13 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
parse_events_option),
OPT_INTEGER('c', "count", &top.default_interval,
"event period to sample"),
- OPT_STRING('p', "pid", &top.target_pid, "pid",
+ OPT_STRING('p', "pid", &top.target.pid, "pid",
"profile events on existing process id"),
- OPT_STRING('t', "tid", &top.target_tid, "tid",
+ OPT_STRING('t', "tid", &top.target.tid, "tid",
"profile events on existing thread id"),
- OPT_BOOLEAN('a', "all-cpus", &top.system_wide,
+ OPT_BOOLEAN('a', "all-cpus", &top.target.system_wide,
"system-wide collection from all CPUs"),
- OPT_STRING('C', "cpu", &top.cpu_list, "cpu",
+ OPT_STRING('C', "cpu", &top.target.cpu_list, "cpu",
"list of cpus to monitor"),
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
@@ -1193,7 +1237,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
"Display raw encoding of assembly instructions (default)"),
OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
"Specify disassembler style (e.g. -M intel for intel syntax)"),
- OPT_STRING('u', "uid", &top.uid_str, "user", "user to profile"),
+ OPT_STRING('u', "uid", &top.target.uid_str, "user", "user to profile"),
OPT_END()
};
@@ -1219,22 +1263,27 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
setup_browser(false);
- top.uid = parse_target_uid(top.uid_str, top.target_tid, top.target_pid);
- if (top.uid_str != NULL && top.uid == UINT_MAX - 1)
- goto out_delete_evlist;
+ status = perf_target__validate(&top.target);
+ if (status) {
+ perf_target__strerror(&top.target, status, errbuf, BUFSIZ);
+ ui__warning("%s", errbuf);
+ }
- /* CPU and PID are mutually exclusive */
- if (top.target_tid && top.cpu_list) {
- printf("WARNING: PID switch overriding CPU\n");
- sleep(1);
- top.cpu_list = NULL;
+ status = perf_target__parse_uid(&top.target);
+ if (status) {
+ int saved_errno = errno;
+
+ perf_target__strerror(&top.target, status, errbuf, BUFSIZ);
+ ui__warning("%s", errbuf);
+
+ status = -saved_errno;
+ goto out_delete_evlist;
}
- if (top.target_pid)
- top.target_tid = top.target_pid;
+ if (perf_target__none(&top.target))
+ top.target.system_wide = true;
- if (perf_evlist__create_maps(top.evlist, top.target_pid,
- top.target_tid, top.uid, top.cpu_list) < 0)
+ if (perf_evlist__create_maps(top.evlist, &top.target) < 0)
usage_with_options(top_usage, options);
if (!top.evlist->nr_entries &&
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-18 05:28:14 +0000