[PATCH] perf tools: Initialize cpu set in pthread_attr_setaffinity_np feature test

From: Adrian Hunter
Date: Mon Mar 02 2015 - 03:01:10 EST


Feature tests are compiled but not executed, however
it might avoid a future uninitialized variable warning,
so initialize the cpu set.

Reported-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c
index 2b81b72..fdada5e 100644
--- a/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c
+++ b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c
@@ -1,5 +1,6 @@
#include <stdint.h>
#include <pthread.h>
+#include <sched.h>

int main(void)
{
@@ -8,7 +9,8 @@ int main(void)
cpu_set_t cs;

pthread_attr_init(&thread_attr);
- /* don't care abt exact args, just the API itself in libpthread */
+ CPU_ZERO(&cs);
+
ret = pthread_attr_setaffinity_np(&thread_attr, sizeof(cs), &cs);

return ret;
--
1.9.1


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