Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
1.2 KiB
C
72 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "util.h"
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#include "rwsem.h"
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#if RWS_ERRORCHECK
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#include "mutex.h"
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#endif
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int init_rwsem(struct rw_semaphore *sem)
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{
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#if RWS_ERRORCHECK
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mutex_init(&sem->mtx);
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return 0;
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#else
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return pthread_rwlock_init(&sem->lock, NULL);
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#endif
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}
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int exit_rwsem(struct rw_semaphore *sem)
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{
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#if RWS_ERRORCHECK
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mutex_destroy(&sem->mtx);
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return 0;
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#else
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return pthread_rwlock_destroy(&sem->lock);
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#endif
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}
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int down_read(struct rw_semaphore *sem)
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NO_THREAD_SAFETY_ANALYSIS
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{
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#if RWS_ERRORCHECK
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mutex_lock(&sem->mtx);
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return 0;
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#else
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return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
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#endif
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}
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int up_read(struct rw_semaphore *sem)
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NO_THREAD_SAFETY_ANALYSIS
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{
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#if RWS_ERRORCHECK
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mutex_unlock(&sem->mtx);
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return 0;
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#else
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return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
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#endif
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}
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int down_write(struct rw_semaphore *sem)
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NO_THREAD_SAFETY_ANALYSIS
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{
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#if RWS_ERRORCHECK
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mutex_lock(&sem->mtx);
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return 0;
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#else
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return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
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#endif
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}
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int up_write(struct rw_semaphore *sem)
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NO_THREAD_SAFETY_ANALYSIS
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{
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#if RWS_ERRORCHECK
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mutex_unlock(&sem->mtx);
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return 0;
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#else
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return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
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#endif
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}
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