Commit c08f7829 authored Dec 02, 2009 by Frederic Weisbecker Committed by Ingo Molnar Dec 03, 2009

mutex: Fix missing conditions to build mutex_spin_on_owner()



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>

parent c0226027

kernel/sched.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -5481,7 +5481,7 @@ asmlinkage void __sched schedule(void)
		}
		EXPORT_SYMBOL(schedule);

		#ifdef CONFIG_SMP
		#ifdef CONFIG_MUTEX_SPIN_ON_OWNER
		/*
		* Look out! "owner" is an entirely speculative pointer
		* access and not reliable.