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authorIngo Molnar <mingo@elte.hu>2006-07-03 00:24:54 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:04 -0700
commit8a25d5debff2daee280e83e09d8c25d67c26a972 (patch)
tree3bccfef9acb66fc62863bfd6c16493c5e8c8e394 /lib/kernel_lock.c
parent4ea2176dfa714882e88180b474e4cbcd888b70af (diff)
downloadlinux-2.6.34-ux500-8a25d5debff2daee280e83e09d8c25d67c26a972.tar.gz
[PATCH] lockdep: prove spinlock rwlock locking correctness
Use the lock validator framework to prove spinlock and rwlock locking correctness. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib/kernel_lock.c')
-rw-r--r--lib/kernel_lock.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/kernel_lock.c b/lib/kernel_lock.c
index e713e86811a..e0fdfddb406 100644
--- a/lib/kernel_lock.c
+++ b/lib/kernel_lock.c
@@ -177,7 +177,12 @@ static inline void __lock_kernel(void)
static inline void __unlock_kernel(void)
{
- spin_unlock(&kernel_flag);
+ /*
+ * the BKL is not covered by lockdep, so we open-code the
+ * unlocking sequence (and thus avoid the dep-chain ops):
+ */
+ _raw_spin_unlock(&kernel_flag);
+ preempt_enable();
}
/*