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perf sched: Use PTHREAD_STACK_MIN to avoid pthread_attr_setstacksize() fail

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on ppc64:
/usr/include/bits/local_lim.h:#define PTHREAD_STACK_MIN	131072

therefore following set of commands:

gives:
perf.2.6.37test: builtin-sched.c:493: create_tasks: Assertion `!(err)' failed.

So make sure we do not set stack size lower than PTHREAD_STACK_MIN.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110110160417.GB2685@psychotron.brq.redhat.com>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Pirko 2011-01-10 14:14:23 -02:00 committed by Arnaldo Carvalho de Melo
parent aa7bc7ef73
commit 12f7e03643
1 changed files with 2 additions and 1 deletions
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3
tools/perf/builtin-sched.c
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@ -489,7 +489,8 @@ static void create_tasks(void)
err = pthread_attr_init(&attr);
BUG_ON(err);
err = pthread_attr_setstacksize(&attr, (size_t)(16*1024));
err = pthread_attr_setstacksize(&attr,
(size_t) max(16 * 1024, PTHREAD_STACK_MIN));
BUG_ON(err);
err = pthread_mutex_lock(&start_work_mutex);
BUG_ON(err);