diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-30 17:17:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-30 17:17:35 -0700 |
| commit | c4e1aa67ed9e4e542a064bc271ddbf152b677e91 (patch) | |
| tree | 2a2ca00bed0fc22b4eb83db092c9178868d8f76b /kernel/mutex.h | |
| parent | cf2f7d7c90279cdbc12429de278f3d27ac2050ae (diff) | |
| parent | 2f8501815256af8498904e68bd0984b1afffd6f8 (diff) | |
Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (33 commits)
lockdep: fix deadlock in lockdep_trace_alloc
lockdep: annotate reclaim context (__GFP_NOFS), fix SLOB
lockdep: annotate reclaim context (__GFP_NOFS), fix
lockdep: build fix for !PROVE_LOCKING
lockstat: warn about disabled lock debugging
lockdep: use stringify.h
lockdep: simplify check_prev_add_irq()
lockdep: get_user_chars() redo
lockdep: simplify get_user_chars()
lockdep: add comments to mark_lock_irq()
lockdep: remove macro usage from mark_held_locks()
lockdep: fully reduce mark_lock_irq()
lockdep: merge the !_READ mark_lock_irq() helpers
lockdep: merge the _READ mark_lock_irq() helpers
lockdep: simplify mark_lock_irq() helpers #3
lockdep: further simplify mark_lock_irq() helpers
lockdep: simplify the mark_lock_irq() helpers
lockdep: split up mark_lock_irq()
lockdep: generate usage strings
lockdep: generate the state bit definitions
...
Diffstat (limited to 'kernel/mutex.h')
| -rw-r--r-- | kernel/mutex.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/kernel/mutex.h b/kernel/mutex.h index a075dafbb29..67578ca48f9 100644 --- a/kernel/mutex.h +++ b/kernel/mutex.h @@ -16,8 +16,26 @@ #define mutex_remove_waiter(lock, waiter, ti) \ __list_del((waiter)->list.prev, (waiter)->list.next) -#define debug_mutex_set_owner(lock, new_owner) do { } while (0) -#define debug_mutex_clear_owner(lock) do { } while (0) +#ifdef CONFIG_SMP +static inline void mutex_set_owner(struct mutex *lock) +{ + lock->owner = current_thread_info(); +} + +static inline void mutex_clear_owner(struct mutex *lock) +{ + lock->owner = NULL; +} +#else +static inline void mutex_set_owner(struct mutex *lock) +{ +} + +static inline void mutex_clear_owner(struct mutex *lock) +{ +} +#endif + #define debug_mutex_wake_waiter(lock, waiter) do { } while (0) #define debug_mutex_free_waiter(waiter) do { } while (0) #define debug_mutex_add_waiter(lock, waiter, ti) do { } while (0) |