diff options
Diffstat (limited to 'kernel/locking/rwbase_rt.c')
| -rw-r--r-- | kernel/locking/rwbase_rt.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/locking/rwbase_rt.c b/kernel/locking/rwbase_rt.c index 9f4322c07486..2835c9ef9b3f 100644 --- a/kernel/locking/rwbase_rt.c +++ b/kernel/locking/rwbase_rt.c @@ -174,6 +174,8 @@ static void __sched __rwbase_read_unlock(struct rwbase_rt *rwb, static __always_inline void rwbase_read_unlock(struct rwbase_rt *rwb, unsigned int state) { + if (trace_contended_release_enabled() && rt_mutex_owner(&rwb->rtmutex)) + trace_call__contended_release(rwb); /* * rwb->readers can only hit 0 when a writer is waiting for the * active readers to leave the critical section. @@ -186,6 +188,7 @@ static __always_inline void rwbase_read_unlock(struct rwbase_rt *rwb, static inline void __rwbase_write_unlock(struct rwbase_rt *rwb, int bias, unsigned long flags) + __releases(&rwb->rtmutex.wait_lock) { struct rt_mutex_base *rtm = &rwb->rtmutex; @@ -204,6 +207,8 @@ static inline void rwbase_write_unlock(struct rwbase_rt *rwb) unsigned long flags; raw_spin_lock_irqsave(&rtm->wait_lock, flags); + if (trace_contended_release_enabled() && rt_mutex_has_waiters(rtm)) + trace_call__contended_release(rwb); __rwbase_write_unlock(rwb, WRITER_BIAS, flags); } @@ -213,6 +218,8 @@ static inline void rwbase_write_downgrade(struct rwbase_rt *rwb) unsigned long flags; raw_spin_lock_irqsave(&rtm->wait_lock, flags); + if (trace_contended_release_enabled() && rt_mutex_has_waiters(rtm)) + trace_call__contended_release(rwb); /* Release it and account current as reader */ __rwbase_write_unlock(rwb, WRITER_BIAS - 1, flags); } |