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| author | Peter Zijlstra <peterz@infradead.org> | 2013-10-31 18:11:53 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-11-06 07:55:07 +0100 |
| commit | 01768b42dc97a67b4fb33a2535c49fc1969880df (patch) | |
| tree | 448a1aff2286e8e9752124964e725d7bd5d3dba8 /kernel/locking/mutex-debug.h | |
| parent | c90423d1de12fbeaf0c898e1db0e962de347302b (diff) | |
| download | linux-stable-01768b42dc97a67b4fb33a2535c49fc1969880df.tar.gz linux-stable-01768b42dc97a67b4fb33a2535c49fc1969880df.tar.bz2 linux-stable-01768b42dc97a67b4fb33a2535c49fc1969880df.zip | |
locking: Move the mutex code to kernel/locking/
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-1ditvncg30dgbpvrz2bxfmke@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/mutex-debug.h')
| -rw-r--r-- | kernel/locking/mutex-debug.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/kernel/locking/mutex-debug.h b/kernel/locking/mutex-debug.h new file mode 100644 index 000000000000..0799fd3e4cfa --- /dev/null +++ b/kernel/locking/mutex-debug.h @@ -0,0 +1,55 @@ +/* + * Mutexes: blocking mutual exclusion locks + * + * started by Ingo Molnar: + * + * Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> + * + * This file contains mutex debugging related internal declarations, + * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case. + * More details are in kernel/mutex-debug.c. + */ + +/* + * This must be called with lock->wait_lock held. + */ +extern void debug_mutex_lock_common(struct mutex *lock, + struct mutex_waiter *waiter); +extern void debug_mutex_wake_waiter(struct mutex *lock, + struct mutex_waiter *waiter); +extern void debug_mutex_free_waiter(struct mutex_waiter *waiter); +extern void debug_mutex_add_waiter(struct mutex *lock, + struct mutex_waiter *waiter, + struct thread_info *ti); +extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter, + struct thread_info *ti); +extern void debug_mutex_unlock(struct mutex *lock); +extern void debug_mutex_init(struct mutex *lock, const char *name, + struct lock_class_key *key); + +static inline void mutex_set_owner(struct mutex *lock) +{ + lock->owner = current; +} + +static inline void mutex_clear_owner(struct mutex *lock) +{ + lock->owner = NULL; +} + +#define spin_lock_mutex(lock, flags) \ + do { \ + struct mutex *l = container_of(lock, struct mutex, wait_lock); \ + \ + DEBUG_LOCKS_WARN_ON(in_interrupt()); \ + local_irq_save(flags); \ + arch_spin_lock(&(lock)->rlock.raw_lock);\ + DEBUG_LOCKS_WARN_ON(l->magic != l); \ + } while (0) + +#define spin_unlock_mutex(lock, flags) \ + do { \ + arch_spin_unlock(&(lock)->rlock.raw_lock); \ + local_irq_restore(flags); \ + preempt_check_resched(); \ + } while (0) |