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>
31 lines
706 B
C
31 lines
706 B
C
#ifndef _PERF_RWSEM_H
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#define _PERF_RWSEM_H
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#include <pthread.h>
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#include "mutex.h"
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/*
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* Mutexes have additional error checking. Enable to use a mutex rather than a
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* rwlock for debugging.
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*/
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#define RWS_ERRORCHECK 0
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struct LOCKABLE rw_semaphore {
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#if RWS_ERRORCHECK
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struct mutex mtx;
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#else
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pthread_rwlock_t lock;
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#endif
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};
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int init_rwsem(struct rw_semaphore *sem);
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int exit_rwsem(struct rw_semaphore *sem);
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int down_read(struct rw_semaphore *sem) SHARED_LOCK_FUNCTION(sem);
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int up_read(struct rw_semaphore *sem) UNLOCK_FUNCTION(sem);
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int down_write(struct rw_semaphore *sem) EXCLUSIVE_LOCK_FUNCTION(sem);
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int up_write(struct rw_semaphore *sem) UNLOCK_FUNCTION(sem);
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#endif /* _PERF_RWSEM_H */
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