diff options
| author | Jarek Poplawski <jarkao2@o2.pl> | 2007-03-22 00:11:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-22 19:39:06 -0700 |
| commit | e3a55fd18deab758a2970e0dfcd60a677a920426 (patch) | |
| tree | 87a0b7e3ae565c10077b1444fda0a462e2e88a1e /include/linux/lockdep.h | |
| parent | 058560fbd70190ea6b50b5df4d814bc30911d06b (diff) | |
| download | lwn-e3a55fd18deab758a2970e0dfcd60a677a920426.tar.gz lwn-e3a55fd18deab758a2970e0dfcd60a677a920426.zip | |
[PATCH] lockdep: lockdep_depth vs. debug_locks
lockdep found a bug during a run of workqueue function - this could be also
caused by a bug from other code running simultaneously.
lockdep really shouldn't be used when debug_locks == 0!
Reported-by: Folkert van Heusden <folkert@vanheusden.com>
Inspired-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/lockdep.h')
| -rw-r--r-- | include/linux/lockdep.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 06fe93a3e916..14c937d345cb 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -245,7 +245,7 @@ extern void lock_release(struct lockdep_map *lock, int nested, # define INIT_LOCKDEP .lockdep_recursion = 0, -#define lockdep_depth(tsk) ((tsk)->lockdep_depth) +#define lockdep_depth(tsk) (debug_locks ? (tsk)->lockdep_depth : 0) #else /* !LOCKDEP */ |