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408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
1 /*
2 * Mutexes: blocking mutual exclusion locks
3 *
4 * started by Ingo Molnar:
5 *
6 * Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
7 *
8 * This file contains mutex debugging related internal declarations,
9 * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case.
10 * More details are in kernel/mutex-debug.c.
11 */
12
13 /*
14 * This must be called with lock->wait_lock held.
15 */
9a11b49 [PATCH] lockdep: better lock debugging
Ingo Molnar authored
16 extern void debug_mutex_lock_common(struct mutex *lock,
17 struct mutex_waiter *waiter);
408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
18 extern void debug_mutex_wake_waiter(struct mutex *lock,
19 struct mutex_waiter *waiter);
20 extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
21 extern void debug_mutex_add_waiter(struct mutex *lock,
22 struct mutex_waiter *waiter,
9a11b49 [PATCH] lockdep: better lock debugging
Ingo Molnar authored
23 struct thread_info *ti);
408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
24 extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
25 struct thread_info *ti);
26 extern void debug_mutex_unlock(struct mutex *lock);
9a11b49 [PATCH] lockdep: better lock debugging
Ingo Molnar authored
27 extern void debug_mutex_init(struct mutex *lock, const char *name,
28 struct lock_class_key *key);
408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
29
0d66bf6 mutex: implement adaptive spinning
Peter Zijlstra authored
30 static inline void mutex_set_owner(struct mutex *lock)
31 {
c6eb3dd mutex: Use p->on_cpu for the adaptive spin
Peter Zijlstra authored
32 lock->owner = current;
0d66bf6 mutex: implement adaptive spinning
Peter Zijlstra authored
33 }
34
35 static inline void mutex_clear_owner(struct mutex *lock)
36 {
37 lock->owner = NULL;
38 }
39
1fb00c6 [PATCH] work around ppc64 bootup bug by making mutex-debugging save/r…
Ingo Molnar authored
40 #define spin_lock_mutex(lock, flags) \
408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
41 do { \
42 struct mutex *l = container_of(lock, struct mutex, wait_lock); \
43 \
9e7f4d4 [PATCH] lockdep: rename DEBUG_WARN_ON()
Ingo Molnar authored
44 DEBUG_LOCKS_WARN_ON(in_interrupt()); \
9a11b49 [PATCH] lockdep: better lock debugging
Ingo Molnar authored
45 local_irq_save(flags); \
c2f21ce locking: Implement new raw_spinlock
Thomas Gleixner authored
46 arch_spin_lock(&(lock)->rlock.raw_lock);\
9e7f4d4 [PATCH] lockdep: rename DEBUG_WARN_ON()
Ingo Molnar authored
47 DEBUG_LOCKS_WARN_ON(l->magic != l); \
408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
48 } while (0)
49
c2f21ce locking: Implement new raw_spinlock
Thomas Gleixner authored
50 #define spin_unlock_mutex(lock, flags) \
51 do { \
52 arch_spin_unlock(&(lock)->rlock.raw_lock); \
53 local_irq_restore(flags); \
54 preempt_check_resched(); \
408894e [PATCH] mutex subsystem, debugging code
Ingo Molnar authored
55 } while (0)
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