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>
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 171d51b..622c60e 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_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 @@
{
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 @@
},
};
- 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 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 @@
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 @@
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);