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mutex: Fix missing conditions to build mutex_spin_on_owner()

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We don't need to build mutex_spin_on_owner() if we have
CONFIG_DEBUG_MUTEXES or CONFIG_HAVE_DEFAULT_NO_SPIN_MUTEXES as
it won't be used under such configs.

Use CONFIG_MUTEX_SPIN_ON_OWNER as it gathers all the necessary
checks before building it.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1259783357-8542-2-git-send-regression-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
This commit is contained in:
Frederic Weisbecker 2009-12-02 20:49:17 +01:00 committed by Ingo Molnar
parent c02260277e
commit c08f782985
1 changed files with 1 additions and 1 deletions
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2
kernel/sched.c
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@ -5481,7 +5481,7 @@ need_resched_nonpreemptible:
} }
EXPORT_SYMBOL(schedule); EXPORT_SYMBOL(schedule);
#ifdef CONFIG_SMP #ifdef CONFIG_MUTEX_SPIN_ON_OWNER
/* /*
* Look out! "owner" is an entirely speculative pointer * Look out! "owner" is an entirely speculative pointer
* access and not reliable. * access and not reliable.