svn commit: r189846 - head/sys/kern

[Jeff Roberson]

Author: jeff
Date: Sun Mar 15 08:03:54 2009
New Revision: 189846
URL: http://svn.freebsd.org/changeset/base/189846

Log:
   - Wrap lock profiling state variables in #ifdef LOCK_PROFILING blocks.

Modified:
  head/sys/kern/kern_lock.c
  head/sys/kern/kern_mutex.c
  head/sys/kern/kern_rwlock.c
  head/sys/kern/kern_sx.c

Modified: head/sys/kern/kern_lock.c
==============================================================================
--- head/sys/kern/kern_lock.c	Sun Mar 15 06:41:47 2009	(r189845)
+++ head/sys/kern/kern_lock.c	Sun Mar 15 08:03:54 2009	(r189846)
@@ -333,16 +333,17 @@ __lockmgr_args(struct lock *lk, u_int fl
     const char *wmesg, int pri, int timo, const char *file, int line)
 {
 	GIANT_DECLARE;
-	uint64_t waittime;
 	struct lock_class *class;
 	const char *iwmesg;
 	uintptr_t tid, v, x;
 	u_int op;
-	int contested, error, ipri, itimo, queue, wakeup_swapper;
+	int error, ipri, itimo, queue, wakeup_swapper;
+#ifdef LOCK_PROFILING
+	uint64_t waittime = 0;
+	int contested = 0;
+#endif
 
-	contested = 0;
 	error = 0;
-	waittime = 0;
 	tid = (uintptr_t)curthread;
 	op = (flags & LK_TYPE_MASK);
 	iwmesg = (wmesg == LK_WMESG_DEFAULT) ? lk->lock_object.lo_name : wmesg;

Modified: head/sys/kern/kern_mutex.c
==============================================================================
--- head/sys/kern/kern_mutex.c	Sun Mar 15 06:41:47 2009	(r189845)
+++ head/sys/kern/kern_mutex.c	Sun Mar 15 08:03:54 2009	(r189846)
@@ -254,8 +254,11 @@ _mtx_unlock_spin_flags(struct mtx *m, in
 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
     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, in
 {
 	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:

Modified: head/sys/kern/kern_rwlock.c
==============================================================================
--- head/sys/kern/kern_rwlock.c	Sun Mar 15 06:41:47 2009	(r189845)
+++ head/sys/kern/kern_rwlock.c	Sun Mar 15 08:03:54 2009	(r189846)
@@ -282,8 +282,10 @@ _rw_rlock(struct rwlock *rw, const char 
 	int spintries = 0;
 	int i;
 #endif
+#ifdef LOCK_PROFILING
 	uint64_t waittime = 0;
 	int contested = 0;
+#endif
 	uintptr_t v;
 
 	KASSERT(rw->rw_lock != RW_DESTROYED,
@@ -584,9 +586,11 @@ _rw_wlock_hard(struct rwlock *rw, uintpt
 	int spintries = 0;
 	int i;
 #endif
-	uint64_t waittime = 0;
 	uintptr_t v, x;
+#ifdef LOCK_PROFILING
+	uint64_t waittime = 0;
 	int contested = 0;
+#endif
 
 	if (rw_wlocked(rw)) {
 		KASSERT(rw->lock_object.lo_flags & RW_RECURSE,

Modified: head/sys/kern/kern_sx.c
==============================================================================
--- head/sys/kern/kern_sx.c	Sun Mar 15 06:41:47 2009	(r189845)
+++ head/sys/kern/kern_sx.c	Sun Mar 15 08:03:54 2009	(r189846)
@@ -431,9 +431,12 @@ _sx_xlock_hard(struct sx *sx, uintptr_t 
 #ifdef ADAPTIVE_SX
 	volatile struct thread *owner;
 #endif
-	uint64_t waittime = 0;
 	uintptr_t x;
-	int contested = 0, error = 0;
+#ifdef LOCK_PROFILING
+	uint64_t waittime = 0;
+	int contested = 0;
+#endif
+	int error = 0;
 
 	/* If we already hold an exclusive lock, then recurse. */
 	if (sx_xlocked(sx)) {
@@ -652,8 +655,10 @@ _sx_slock_hard(struct sx *sx, int opts, 
 #ifdef ADAPTIVE_SX
 	volatile struct thread *owner;
 #endif
+#ifdef LOCK_PROFILING
 	uint64_t waittime = 0;
 	int contested = 0;
+#endif
 	uintptr_t x;
 	int error = 0;