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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-20 19:16:29 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-02 15:41:34 +0200 |
| commit | f607c6685774811b8112e124f10a053d77015485 (patch) | |
| tree | 4d32d967c8f8fb37ae09319735062a131a91725b /include/linux/lockdep.h | |
| parent | 98c33eddaf41d225d99b40f9eedbd0fac4c08c05 (diff) | |
| download | blackbird-op-linux-f607c6685774811b8112e124f10a053d77015485.tar.gz blackbird-op-linux-f607c6685774811b8112e124f10a053d77015485.zip | |
lockdep: Introduce lockdep_assert_held()
Add a lockdep helper to validate that we indeed are the owner
of a lock.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/lockdep.h')
| -rw-r--r-- | include/linux/lockdep.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 12aabfcb45f6..a6d5e5e4d084 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -296,6 +296,10 @@ extern void lock_acquire(struct lockdep_map *lock, unsigned int subclass, extern void lock_release(struct lockdep_map *lock, int nested, unsigned long ip); +#define lockdep_is_held(lock) lock_is_held(&(lock)->dep_map) + +extern int lock_is_held(struct lockdep_map *lock); + extern void lock_set_class(struct lockdep_map *lock, const char *name, struct lock_class_key *key, unsigned int subclass, unsigned long ip); @@ -314,6 +318,8 @@ extern void lockdep_trace_alloc(gfp_t mask); #define lockdep_depth(tsk) (debug_locks ? (tsk)->lockdep_depth : 0) +#define lockdep_assert_held(l) WARN_ON(debug_locks && !lockdep_is_held(l)) + #else /* !LOCKDEP */ static inline void lockdep_off(void) @@ -358,6 +364,8 @@ struct lock_class_key { }; #define lockdep_depth(tsk) (0) +#define lockdep_assert_held(l) do { } while (0) + #endif /* !LOCKDEP */ #ifdef CONFIG_LOCK_STAT |
