From efbe2eee6dc0f179be84292bf269528b3ec365e9 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 7 Jul 2011 11:39:45 +0200 Subject: [PATCH] lockdep: Fix lockdep_no_validate against IRQ states Thomas noticed that a lock marked with lockdep_set_novalidate_class() will still trigger warnings for IRQ inversions. Cure this by skipping those when marking irq state. Reported-and-tested-by: Thomas Gleixner Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-2dp5vmpsxeraqm42kgww6ge2@git.kernel.org Signed-off-by: Ingo Molnar --- kernel/lockdep.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 298c927..628276d 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -2468,6 +2468,9 @@ mark_held_locks(struct task_struct *curr, enum mark_type mark) BUG_ON(usage_bit >= LOCK_USAGE_STATES); + if (hlock_class(hlock)->key == &__lockdep_no_validate__) + continue; + if (!mark_lock(curr, hlock, usage_bit)) return 0; } -- 2.7.4