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| author | Ingo Molnar <mingo@elte.hu> | 2006-06-27 02:54:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-27 17:32:47 -0700 |
| commit | c87e2837be82df479a6bae9f155c43516d2feebc (patch) | |
| tree | ad6ab35f0b78f71abaa7b05185e9e3f97809c6de /kernel/rtmutex_common.h | |
| parent | 0cdbee9920fb37eb2dc49b860c2b28862d647adc (diff) | |
| download | lwn-c87e2837be82df479a6bae9f155c43516d2feebc.tar.gz lwn-c87e2837be82df479a6bae9f155c43516d2feebc.zip | |
[PATCH] pi-futex: futex_lock_pi/futex_unlock_pi support
This adds the actual pi-futex implementation, based on rt-mutexes.
[dino@in.ibm.com: fix an oops-causing race]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/rtmutex_common.h')
| -rw-r--r-- | kernel/rtmutex_common.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/rtmutex_common.h b/kernel/rtmutex_common.h index e068024eeffc..9c75856e791e 100644 --- a/kernel/rtmutex_common.h +++ b/kernel/rtmutex_common.h @@ -112,4 +112,12 @@ static inline unsigned long rt_mutex_owner_pending(struct rt_mutex *lock) return (unsigned long)lock->owner & RT_MUTEX_OWNER_PENDING; } +/* + * PI-futex support (proxy locking functions, etc.): + */ +extern struct task_struct *rt_mutex_next_owner(struct rt_mutex *lock); +extern void rt_mutex_init_proxy_locked(struct rt_mutex *lock, + struct task_struct *proxy_owner); +extern void rt_mutex_proxy_unlock(struct rt_mutex *lock, + struct task_struct *proxy_owner); #endif |