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authorFrederic Weisbecker <fweisbec@gmail.com>2009-10-17 17:57:18 +0200
committerIngo Molnar <mingo@elte.hu>2009-10-19 09:26:35 +0200
commitdb9f11e36d0125a5e3e595ea9ef2e4b89f7e8737 (patch)
treed0622b32432b06391a3f0ebece4d296a72bd0f3b /tools
parent2ba0825075e76236d22a20decd8e2346a99faabe (diff)
perf tools: Use DECLARE_BITMAP instead of an open-coded array
Use DECLARE_BITMAP instead of an open coded array for our bitmap of featured sections. This makes the array an unsigned long instead of a u64 but since we use a 256 bits bitmap, the array size shouldn't vary between different boxes. 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: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1255795038-13751-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/header.c22
-rw-r--r--tools/perf/util/header.h11
-rw-r--r--tools/perf/util/include/asm/asm-offsets.h1
-rw-r--r--tools/perf/util/include/linux/types.h8
4 files changed, 20 insertions, 22 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 171d51b6f35..622c60e4525 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -8,8 +8,6 @@
#include "../perf.h"
#include "trace-event.h"
-#include <linux/bitmap.h>
-
/*
* Create new perf.data header attribute:
*/
@@ -143,12 +141,12 @@ struct perf_file_header {
struct perf_file_section attrs;
struct perf_file_section data;
struct perf_file_section event_types;
- feat_mask_t adds_features;
+ DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
void perf_header__feat_trace_info(struct perf_header *header)
{
- set_bit(HEADER_TRACE_INFO, perf_header__adds_mask(header));
+ set_bit(HEADER_TRACE_INFO, header->adds_features);
}
static void do_write(int fd, void *buf, size_t size)
@@ -168,7 +166,7 @@ static void perf_header__adds_write(struct perf_header *self, int fd)
{
struct perf_file_section trace_sec;
u64 cur_offset = lseek(fd, 0, SEEK_CUR);
- unsigned long *feat_mask = perf_header__adds_mask(self);
+ unsigned long *feat_mask = self->adds_features;
if (test_bit(HEADER_TRACE_INFO, feat_mask)) {
/* Write trace info */
@@ -250,7 +248,7 @@ void perf_header__write(struct perf_header *self, int fd)
},
};
- memcpy(&f_header.adds_features, &self->adds_features, sizeof(feat_mask_t));
+ memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features));
lseek(fd, 0, SEEK_SET);
do_write(fd, &f_header, sizeof(f_header));
@@ -276,7 +274,7 @@ static void do_read(int fd, void *buf, size_t size)
static void perf_header__adds_read(struct perf_header *self, int fd)
{
- const unsigned long *feat_mask = perf_header__adds_mask(self);
+ const unsigned long *feat_mask = self->adds_features;
if (test_bit(HEADER_TRACE_INFO, feat_mask)) {
struct perf_file_section trace_sec;
@@ -306,11 +304,9 @@ struct perf_header *perf_header__read(int fd)
if (f_header.size != sizeof(f_header)) {
/* Support the previous format */
- if (f_header.size == offsetof(typeof(f_header), adds_features)) {
- unsigned long *mask = (unsigned long *)(void *)
- &f_header.adds_features;
- bitmap_zero(mask, HEADER_FEAT_BITS);
- } else
+ if (f_header.size == offsetof(typeof(f_header), adds_features))
+ bitmap_zero(f_header.adds_features, HEADER_FEAT_BITS);
+ else
die("incompatible file format");
}
nr_attrs = f_header.attrs.size / sizeof(f_attr);
@@ -346,7 +342,7 @@ struct perf_header *perf_header__read(int fd)
event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type);
}
- memcpy(&self->adds_features, &f_header.adds_features, sizeof(feat_mask_t));
+ memcpy(&self->adds_features, &f_header.adds_features, sizeof(f_header.adds_features));
perf_header__adds_read(self, fd);
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 0eb4a9126b7..2ea9dfb1236 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -5,6 +5,8 @@
#include <sys/types.h>
#include "types.h"
+#include <linux/bitmap.h>
+
struct perf_header_attr {
struct perf_event_attr attr;
int ids, size;
@@ -16,8 +18,6 @@ struct perf_header_attr {
#define HEADER_FEAT_BITS 256
-typedef typeof(u64[HEADER_FEAT_BITS / 8]) feat_mask_t;
-
struct perf_header {
int frozen;
int attrs, size;
@@ -27,14 +27,9 @@ struct perf_header {
u64 data_size;
u64 event_offset;
u64 event_size;
- feat_mask_t adds_features;
+ DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
-static inline unsigned long *perf_header__adds_mask(struct perf_header *self)
-{
- return (unsigned long *)(void *)&self->adds_features;
-}
-
struct perf_header *perf_header__read(int fd);
void perf_header__write(struct perf_header *self, int fd);
diff --git a/tools/perf/util/include/asm/asm-offsets.h b/tools/perf/util/include/asm/asm-offsets.h
new file mode 100644
index 00000000000..ed538942523
--- /dev/null
+++ b/tools/perf/util/include/asm/asm-offsets.h
@@ -0,0 +1 @@
+/* stub */
diff --git a/tools/perf/util/include/linux/types.h b/tools/perf/util/include/linux/types.h
index ed538942523..858a38d0843 100644
--- a/tools/perf/util/include/linux/types.h
+++ b/tools/perf/util/include/linux/types.h
@@ -1 +1,7 @@
-/* stub */
+#ifndef _PERF_LINUX_TYPES_H_
+#define _PERF_LINUX_TYPES_H_
+
+#define DECLARE_BITMAP(name,bits) \
+ unsigned long name[BITS_TO_LONGS(bits)]
+
+#endif