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408894ee IM |
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 | ||
408894ee IM |
13 | /* |
14 | * This must be called with lock->wait_lock held. | |
15 | */ | |
9a11b49a IM |
16 | extern void debug_mutex_lock_common(struct mutex *lock, |
17 | struct mutex_waiter *waiter); | |
408894ee IM |
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, | |
6720a305 | 23 | struct task_struct *task); |
408894ee | 24 | extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter, |
6720a305 | 25 | struct task_struct *task); |
408894ee | 26 | extern void debug_mutex_unlock(struct mutex *lock); |
9a11b49a IM |
27 | extern void debug_mutex_init(struct mutex *lock, const char *name, |
28 | struct lock_class_key *key); | |
408894ee | 29 | |
1fb00c6c | 30 | #define spin_lock_mutex(lock, flags) \ |
408894ee IM |
31 | do { \ |
32 | struct mutex *l = container_of(lock, struct mutex, wait_lock); \ | |
33 | \ | |
9e7f4d45 | 34 | DEBUG_LOCKS_WARN_ON(in_interrupt()); \ |
9a11b49a | 35 | local_irq_save(flags); \ |
c2f21ce2 | 36 | arch_spin_lock(&(lock)->rlock.raw_lock);\ |
9e7f4d45 | 37 | DEBUG_LOCKS_WARN_ON(l->magic != l); \ |
408894ee IM |
38 | } while (0) |
39 | ||
c2f21ce2 TG |
40 | #define spin_unlock_mutex(lock, flags) \ |
41 | do { \ | |
42 | arch_spin_unlock(&(lock)->rlock.raw_lock); \ | |
43 | local_irq_restore(flags); \ | |
44 | preempt_check_resched(); \ | |
408894ee | 45 | } while (0) |