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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-12-04 09:00:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-04 10:08:18 +0100 |
| commit | 00ef9f7348dfd2fc223ec42aceb30836e86b367f (patch) | |
| tree | 14c33d878bec717179a6916232e118dbfbf7d65f /include/linux/lockdep.h | |
| parent | cb9c34e6d090d376b77becaa5d29a65dec7f4272 (diff) | |
| download | op-kernel-dev-00ef9f7348dfd2fc223ec42aceb30836e86b367f.zip op-kernel-dev-00ef9f7348dfd2fc223ec42aceb30836e86b367f.tar.gz | |
lockdep: change a held lock's class
Impact: introduce new lockdep API
Allow to change a held lock's class. Basically the same as the existing
code to change a subclass therefore reuse all that.
The XFS code will be able to use this to annotate their inode locking.
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 | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 8956daf..37a0361 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -314,8 +314,15 @@ extern void lock_acquire(struct lockdep_map *lock, unsigned int subclass, extern void lock_release(struct lockdep_map *lock, int nested, unsigned long ip); -extern void lock_set_subclass(struct lockdep_map *lock, unsigned int subclass, - unsigned long ip); +extern void lock_set_class(struct lockdep_map *lock, const char *name, + struct lock_class_key *key, unsigned int subclass, + unsigned long ip); + +static inline void lock_set_subclass(struct lockdep_map *lock, + unsigned int subclass, unsigned long ip) +{ + lock_set_class(lock, lock->name, lock->key, subclass, ip); +} # define INIT_LOCKDEP .lockdep_recursion = 0, @@ -333,6 +340,7 @@ static inline void lockdep_on(void) # define lock_acquire(l, s, t, r, c, n, i) do { } while (0) # define lock_release(l, n, i) do { } while (0) +# define lock_set_class(l, n, k, s, i) do { } while (0) # define lock_set_subclass(l, s, i) do { } while (0) # define lockdep_init() do { } while (0) # define lockdep_info() do { } while (0) |
