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authorIngo Molnar <mingo@elte.hu>2006-07-14 00:24:27 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-14 21:53:55 -0700
commit3a5f5e488ceee9e08df3dff3f01b12fafc9e7e68 (patch)
tree12ebd936831e797780b9cf716cc7aaf337b25141 /drivers
parent2e8f7a3128bb8fac8351a994f1fc325717899308 (diff)
[PATCH] lockdep: core, fix rq-lock handling on __ARCH_WANT_UNLOCKED_CTXSW
On platforms that have __ARCH_WANT_UNLOCKED_CTXSW set and want to implement lock validator support there's a bug in rq->lock handling: in this case we dont 'carry over' the runqueue lock into another task - but still we did a spinlock_release() of it. Fix this by making the spinlock_release() in context_switch() dependent on !__ARCH_WANT_UNLOCKED_CTXSW. (Reported by Ralf Baechle on MIPS, which has __ARCH_WANT_UNLOCKED_CTXSW. This fixes a lockdep-internal BUG message on such platforms.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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