Cregit: Linux 6.4: rwsem.c

Contributors: 3
Author	Tokens	Token Proportion	Commits	Commit Proportion
Arnaldo Carvalho de Melo	133	95.68%	1	33.33%
Steven Rostedt	5	3.60%	1	33.33%
Greg Kroah-Hartman	1	0.72%	1	33.33%
Total	139		3

// SPDX-License-Identifier: GPL-2.0
#include "util.h"
#include "rwsem.h"

int init_rwsem(struct rw_semaphore *sem)
{
	return pthread_rwlock_init(&sem->lock, NULL);
}

int exit_rwsem(struct rw_semaphore *sem)
{
	return pthread_rwlock_destroy(&sem->lock);
}

int down_read(struct rw_semaphore *sem)
{
	return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
}

int up_read(struct rw_semaphore *sem)
{
	return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
}

int down_write(struct rw_semaphore *sem)
{
	return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
}

int up_write(struct rw_semaphore *sem)
{
	return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
}