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| author | Jarek Poplawski <jarkao2@o2.pl> | 2007-02-20 13:58:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-20 17:10:14 -0800 |
| commit | 60e114d1134555d1813e20a8cd86304331da05c7 (patch) | |
| tree | 2cd482be7f82b8c2f6bf1fde7bcf288471e4cd6b | |
| parent | 34173a4aad7a641e72b70f9927ca797746fbce69 (diff) | |
| download | lwn-60e114d1134555d1813e20a8cd86304331da05c7.tar.gz lwn-60e114d1134555d1813e20a8cd86304331da05c7.zip | |
[PATCH] lockdep: debug_locks check after check_chain_key
In __lock_acquire check_chain_key can turn off debug_locks, so check is
needed to assure proper return code.
Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/lockdep.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 592c576d77a7..a08a17218dfa 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -2228,6 +2228,10 @@ out_calc_hash: curr->lockdep_depth++; check_chain_key(curr); +#ifdef CONFIG_DEBUG_LOCKDEP + if (unlikely(!debug_locks)) + return 0; +#endif if (unlikely(curr->lockdep_depth >= MAX_LOCK_DEPTH)) { debug_locks_off(); printk("BUG: MAX_LOCK_DEPTH too low!\n"); |