Date: Fri, 24 Nov 2017 19:04:31 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r326176 - head/sys/kern Message-ID: <201711241904.vAOJ4VvG066666@repo.freebsd.org>
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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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