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>

1 files changed, 3 insertions, 8 deletions

diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 0eb4a9126b7c..2ea9dfb1236a 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);