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From: tip-bot for Adrian Hunter <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: adrian.hunter@intel.com, mingo@kernel.org, tglx@linutronix.de,
	acme@redhat.com, linux-kernel@vger.kernel.org,
	eranian@google.com, hpa@zytor.com
Subject: [tip:perf/core] perf tools: Initialize cpu set in pthread_attr_setaffinity_np feature test
Date: Mon, 2 Mar 2015 22:26:28 -0800	[thread overview]
Message-ID: <tip-543d976fa2ebf5543bd07b5d487bf3a6144c0886@git.kernel.org> (raw)
In-Reply-To: <54F41849.1010906@intel.com>

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;

      reply	other threads:[~2015-03-03  6:26 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-24 10:46 [PATCH] perf tools: Fix pthread_attr_setaffinity_np build error Adrian Hunter
2015-02-24 13:32 ` Josh Boyer
2015-02-24 13:52   ` Adrian Hunter
2015-02-24 14:31     ` Josh Boyer
2015-02-25  6:50       ` Adrian Hunter
2015-03-01 16:50 ` [tip:perf/urgent] " tip-bot for Adrian Hunter
2015-03-01 16:52   ` Ingo Molnar
2015-03-02  7:59     ` [PATCH] perf tools: Initialize cpu set in pthread_attr_setaffinity_np feature test Adrian Hunter
2015-03-03  6:26       ` tip-bot for Adrian Hunter [this message]

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