[tip:perf/core] perf tools: Use __weak definition from linux/compiler.h

[tip-bot for Rui Teng]

Commit-ID:  11d8f870c8eb8dd41ade688fbad6946ad69243fe
Gitweb:     http://git.kernel.org/tip/11d8f870c8eb8dd41ade688fbad6946ad69243fe
Author:     Rui Teng <rui.teng@xxxxxxxxxxxxxxxxxx>
AuthorDate: Thu, 28 Jul 2016 10:05:57 +0800
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 23 Aug 2016 15:37:33 -0300

perf tools: Use __weak definition from linux/compiler.h

Replace __attribute__((weak)) with __weak definition

Signed-off-by: Rui Teng <rui.teng@xxxxxxxxxxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1469671557-2256-2-git-send-email-rui.teng@xxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/header.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 8f0db40..85dd0db 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -828,8 +828,7 @@ static int write_group_desc(int fd, struct perf_header *h __maybe_unused,
  * default get_cpuid(): nothing gets recorded
  * actual implementation must be in arch/$(ARCH)/util/header.c
  */
-int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused,
-				     size_t sz __maybe_unused)
+int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused)
 {
 	return -1;
 }