Author: markj
Date: Fri Nov 24 19:04:31 2017
New Revision: 326176
URL: https://svnweb.freebsd.org/changeset/base/326176
Log:
Have lockstat:::sx-release fire only after the lock state has changed.
MFC after: 1 week
Modified:
head/sys/kern/kern_sx.c
Modified: head/sys/kern/kern_sx.c
==============================================================================
--- head/sys/kern/kern_sx.c Fri Nov 24 19:02:06 2017 (r326175)
+++ head/sys/kern/kern_sx.c Fri Nov 24 19:04:31 2017 (r326176)
@@ -1180,8 +1180,6 @@ _sx_sunlock_hard(struct sx *sx, uintptr_t x LOCK_FILE_
if (SCHEDULER_STOPPED())
return;
- LOCKSTAT_PROFILE_RELEASE_RWLOCK(sx__release, sx, LOCKSTAT_READER);
-
for (;;) {
if (_sx_sunlock_try(sx, &x))
break;
@@ -1217,6 +1215,7 @@ _sx_sunlock_hard(struct sx *sx, uintptr_t x LOCK_FILE_
kick_proc0();
break;
}
+ LOCKSTAT_PROFILE_RELEASE_RWLOCK(sx__release, sx, LOCKSTAT_READER);
}
void
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