ia64/linux-2.6.18-xen.hg

view kernel/mutex-debug.h @ 562:66faefe721eb

pvSCSI backend driver

Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
Signed-off-by: Jun Kamada <kama@jp.fujitsu.com>
author Keir Fraser <keir.fraser@citrix.com>
date Mon Jun 02 09:58:27 2008 +0100 (2008-06-02)
parents 831230e53067
children
line source
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 */
13 /*
14 * This must be called with lock->wait_lock held.
15 */
16 extern void
17 debug_mutex_set_owner(struct mutex *lock, struct thread_info *new_owner);
19 static inline void debug_mutex_clear_owner(struct mutex *lock)
20 {
21 lock->owner = NULL;
22 }
24 extern void debug_mutex_lock_common(struct mutex *lock,
25 struct mutex_waiter *waiter);
26 extern void debug_mutex_wake_waiter(struct mutex *lock,
27 struct mutex_waiter *waiter);
28 extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
29 extern void debug_mutex_add_waiter(struct mutex *lock,
30 struct mutex_waiter *waiter,
31 struct thread_info *ti);
32 extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
33 struct thread_info *ti);
34 extern void debug_mutex_unlock(struct mutex *lock);
35 extern void debug_mutex_init(struct mutex *lock, const char *name,
36 struct lock_class_key *key);
38 #define spin_lock_mutex(lock, flags) \
39 do { \
40 struct mutex *l = container_of(lock, struct mutex, wait_lock); \
41 \
42 DEBUG_LOCKS_WARN_ON(in_interrupt()); \
43 local_irq_save(flags); \
44 __raw_spin_lock(&(lock)->raw_lock); \
45 DEBUG_LOCKS_WARN_ON(l->magic != l); \
46 } while (0)
48 #define spin_unlock_mutex(lock, flags) \
49 do { \
50 __raw_spin_unlock(&(lock)->raw_lock); \
51 local_irq_restore(flags); \
52 preempt_check_resched(); \
53 } while (0)