Messages in this thread Patch in this message | | | Date | Mon, 2 Mar 2015 22:26:28 -0800 | From | tip-bot for Adrian Hunter <> | Subject | [tip:perf/core] perf tools: Initialize cpu set in pthread_attr_setaffinity_np feature test |
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Commit-ID: 543d976fa2ebf5543bd07b5d487bf3a6144c0886 Gitweb: http://git.kernel.org/tip/543d976fa2ebf5543bd07b5d487bf3a6144c0886 Author: Adrian Hunter <adrian.hunter@intel.com> AuthorDate: Mon, 2 Mar 2015 09:59:05 +0200 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Mon, 2 Mar 2015 12:48:16 -0300
perf tools: Initialize cpu set in pthread_attr_setaffinity_np feature test
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@kernel.org> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-tip-commits@vger.kernel.org Link: http://lkml.kernel.org/r/54F41849.1010906@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- 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;
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