f214737b75
Make sure that the lockdep_register_key() and lockdep_unregister_key() code is tested when running the lockdep tests. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: johannes.berg@intel.com Cc: tj@kernel.org Link: https://lkml.kernel.org/r/20190214230058.196511-24-bvanassche@acm.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LIBLOCKDEP_MUTEX_H
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#define _LIBLOCKDEP_MUTEX_H
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#include <pthread.h>
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#include "common.h"
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struct liblockdep_pthread_mutex {
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pthread_mutex_t mutex;
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struct lock_class_key key;
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struct lockdep_map dep_map;
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};
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typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t;
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#define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx) \
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(const struct liblockdep_pthread_mutex) { \
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.mutex = PTHREAD_MUTEX_INITIALIZER, \
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.dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)), \
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}
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static inline int __mutex_init(liblockdep_pthread_mutex_t *lock,
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const char *name,
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struct lock_class_key *key,
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const pthread_mutexattr_t *__mutexattr)
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{
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lockdep_init_map(&lock->dep_map, name, key, 0);
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return pthread_mutex_init(&lock->mutex, __mutexattr);
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}
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#define liblockdep_pthread_mutex_init(mutex, mutexattr) \
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({ \
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lockdep_register_key(&(mutex)->key); \
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__mutex_init((mutex), #mutex, &(mutex)->key, (mutexattr)); \
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})
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static inline int liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t *lock)
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{
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lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
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return pthread_mutex_lock(&lock->mutex);
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}
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static inline int liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t *lock)
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{
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lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_);
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return pthread_mutex_unlock(&lock->mutex);
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}
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static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *lock)
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{
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lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
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return pthread_mutex_trylock(&lock->mutex) == 0 ? 1 : 0;
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}
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static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
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{
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lockdep_reset_lock(&lock->dep_map);
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lockdep_unregister_key(&lock->key);
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return pthread_mutex_destroy(&lock->mutex);
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}
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#ifdef __USE_LIBLOCKDEP
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#define pthread_mutex_t liblockdep_pthread_mutex_t
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#define pthread_mutex_init liblockdep_pthread_mutex_init
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#define pthread_mutex_lock liblockdep_pthread_mutex_lock
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#define pthread_mutex_unlock liblockdep_pthread_mutex_unlock
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#define pthread_mutex_trylock liblockdep_pthread_mutex_trylock
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#define pthread_mutex_destroy liblockdep_pthread_mutex_destroy
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#endif
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#endif
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