Release 4.18 tools/perf/util/rwsem.h

#ifndef _PERF_RWSEM_H

#define _PERF_RWSEM_H

#include <pthread.h>


struct rw_semaphore {
	
pthread_rwlock_t lock;
};

int init_rwsem(struct rw_semaphore *sem);
int exit_rwsem(struct rw_semaphore *sem);

int down_read(struct rw_semaphore *sem);
int up_read(struct rw_semaphore *sem);

int down_write(struct rw_semaphore *sem);
int up_write(struct rw_semaphore *sem);

#endif /* _PERF_RWSEM_H */
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