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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-12-04 09:00:17 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-04 10:08:18 +0100
commit00ef9f7348dfd2fc223ec42aceb30836e86b367f (patch)
tree14c33d878bec717179a6916232e118dbfbf7d65f /include/linux/lockdep.h
parentcb9c34e6d090d376b77becaa5d29a65dec7f4272 (diff)
downloadop-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.h12
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)
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