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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-07-07 11:39:45 +0200
committerIngo Molnar <mingo@elte.hu>2011-07-21 20:43:16 +0200
commitefbe2eee6dc0f179be84292bf269528b3ec365e9 (patch)
tree40996bc1d349f1747a5dd0261bdc1c84db2631de
parent4582c0a4866ea70c35aa9279e1f91834d3348a93 (diff)
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 <tglx@linutronix.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-2dp5vmpsxeraqm42kgww6ge2@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/lockdep.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 298c9276dfdb..628276d05915 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;
}