linux-kernel - [PATCH] perf: add GCC optimization to memory allocating functions

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Date:	Fri, 26 Nov 2010 10:24:24 -0300
From:	Davidlohr Bueso <dave@....org>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] perf: add GCC optimization to memory allocating functions

From: Davidlohr Bueso <dave@....org>

We can benefit from the alloc_size attribute in xrealloc and zalloc.

Signed-off-by: Davidlohr Bueso <dave@....org>
---
 tools/perf/util/util.h |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 7562707..41a5067 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -182,10 +182,11 @@ static inline char *gitstrchrnul(const char *s, int c)
  * Wrappers:
  */
 extern char *xstrdup(const char *str);
-extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
+extern void *xrealloc(void *ptr, size_t size) __attribute__((weak, alloc_size(2)));
 
 
-static inline void *zalloc(size_t size)
+static inline __attribute__((alloc_size(1)))
+void *zalloc(size_t size)
 {
 	return calloc(1, size);
 }
-- 
1.7.1





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