Showing the changes to kernel/locking/mutex-debug.h (1 of 6 files). Show all
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| 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 | + */ | |
| 16 | +extern void debug_mutex_lock_common(struct mutex *lock, | |
| 17 | + struct mutex_waiter *waiter); | |
| 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, | |
| 23 | + struct thread_info *ti); | |
| 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); | |
| 27 | +extern void debug_mutex_init(struct mutex *lock, const char *name, | |
| 28 | + struct lock_class_key *key); | |
| 29 | + | |
| 30 | +static inline void mutex_set_owner(struct mutex *lock) | |
| 31 | +{ | |
| 32 | + lock->owner = current; | |
| 33 | +} | |
| 34 | + | |
| 35 | +static inline void mutex_clear_owner(struct mutex *lock) | |
| 36 | +{ | |
| 37 | + lock->owner = NULL; | |
| 38 | +} | |
| 39 | + | |
| 40 | +#define spin_lock_mutex(lock, flags) \ | |
| 41 | + do { \ | |
| 42 | + struct mutex *l = container_of(lock, struct mutex, wait_lock); \ | |
| 43 | + \ | |
| 44 | + DEBUG_LOCKS_WARN_ON(in_interrupt()); \ | |
| 45 | + local_irq_save(flags); \ | |
| 46 | + arch_spin_lock(&(lock)->rlock.raw_lock);\ | |
| 47 | + DEBUG_LOCKS_WARN_ON(l->magic != l); \ | |
| 48 | + } while (0) | |
| 49 | + | |
| 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(); \ | |
| 55 | + } while (0) | |