1// SPDX-License-Identifier: GPL-2.0
 2#include "util.h"
 3#include "rwsem.h"
 4
 5int init_rwsem(struct rw_semaphore *sem)
 6{
 7	return pthread_rwlock_init(&sem->lock, NULL);
 8}
 9
10int exit_rwsem(struct rw_semaphore *sem)
11{
12	return pthread_rwlock_destroy(&sem->lock);
13}
14
15int down_read(struct rw_semaphore *sem)
16{
17	return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
18}
19
20int up_read(struct rw_semaphore *sem)
21{
22	return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
23}
24
25int down_write(struct rw_semaphore *sem)
26{
27	return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
28}
29
30int up_write(struct rw_semaphore *sem)
31{
32	return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
33}