diff options
Diffstat (limited to 'sys/kern/kern_mutex.c')
| -rw-r--r-- | sys/kern/kern_mutex.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/sys/kern/kern_mutex.c b/sys/kern/kern_mutex.c index 26f495817d68..c56e124dedc6 100644 --- a/sys/kern/kern_mutex.c +++ b/sys/kern/kern_mutex.c @@ -254,8 +254,11 @@ _mtx_unlock_spin_flags(struct mtx *m, int opts, const char *file, int line) int _mtx_trylock(struct mtx *m, int opts, const char *file, int line) { - int rval, contested = 0; +#ifdef LOCK_PROFILING uint64_t waittime = 0; + int contested = 0; +#endif + int rval; MPASS(curthread != NULL); KASSERT(m->mtx_lock != MTX_DESTROYED, @@ -296,15 +299,17 @@ _mtx_lock_sleep(struct mtx *m, uintptr_t tid, int opts, const char *file, int line) { struct turnstile *ts; + uintptr_t v; #ifdef ADAPTIVE_MUTEXES volatile struct thread *owner; #endif #ifdef KTR int cont_logged = 0; #endif +#ifdef LOCK_PROFILING int contested = 0; uint64_t waittime = 0; - uintptr_t v; +#endif if (mtx_owned(m)) { KASSERT((m->lock_object.lo_flags & LO_RECURSABLE) != 0, @@ -448,8 +453,11 @@ void _mtx_lock_spin(struct mtx *m, uintptr_t tid, int opts, const char *file, int line) { - int i = 0, contested = 0; + int i = 0; +#ifdef LOCK_PROFILING + int contested = 0; uint64_t waittime = 0; +#endif if (LOCK_LOG_TEST(&m->lock_object, opts)) CTR1(KTR_LOCK, "_mtx_lock_spin: %p spinning", m); @@ -486,11 +494,13 @@ _thread_lock_flags(struct thread *td, int opts, const char *file, int line) { struct mtx *m; uintptr_t tid; - int i, contested; - uint64_t waittime; + int i; +#ifdef LOCK_PROFILING + int contested = 0; + uint64_t waittime = 0; +#endif - contested = i = 0; - waittime = 0; + i = 0; tid = (uintptr_t)curthread; for (;;) { retry: |