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Ian Rogers
6fe064491b
Add annotations used by clang's -Wthread-safety. Fix dsos compilation errors caused by a lock of annotations. Signed-off-by: Ian Rogers <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Athira Rajeev <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Chaitanya S Prakash <[email protected]> Cc: Fei Lang <[email protected]> Cc: Howard Chu <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: James Clark <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Justin Stitt <[email protected]> Cc: Kan Liang <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephen Brennan <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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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