diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2026-03-06 12:43:56 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-03-08 13:06:53 +0300 |
| commit | 739690915ce1f017223ef4e6f3cc966ccfa3c861 (patch) | |
| tree | bf804dc3b8d146cc1ff527300f51958a347ae103 /include | |
| parent | 90bb681dcdf7e69c90b56a18f06c0389a0810b92 (diff) | |
| download | linux-739690915ce1f017223ef4e6f3cc966ccfa3c861.tar.xz | |
locking/rwsem: Add context analysis
Add compiler context analysis annotations.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260306101417.GT1282955@noisy.programming.kicks-ass.net
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rwsem.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index e7829531c4ba..6a1a7bae5f81 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -57,7 +57,7 @@ context_lock_struct(rw_semaphore) { struct optimistic_spin_queue osq; /* spinner MCS lock */ #endif raw_spinlock_t wait_lock; - struct rwsem_waiter *first_waiter; + struct rwsem_waiter *first_waiter __guarded_by(&wait_lock); #ifdef CONFIG_DEBUG_RWSEMS void *magic; #endif @@ -131,7 +131,7 @@ do { \ */ static inline bool rwsem_is_contended(struct rw_semaphore *sem) { - return sem->first_waiter != NULL; + return data_race(sem->first_waiter != NULL); } #if defined(CONFIG_DEBUG_RWSEMS) || defined(CONFIG_DETECT_HUNG_TASK_BLOCKER) |