Date: Wed, 18 May 2016 03:21:21 +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: r300103 - head/sys/kern Message-ID: <201605180321.u4I3LLWH002531@repo.freebsd.org>
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Author: markj Date: Wed May 18 03:21:21 2016 New Revision: 300103 URL: https://svnweb.freebsd.org/changeset/base/300103 Log: lockstat:::thread-spin should only fire after spinning for the lock. MFC after: 1 week Modified: head/sys/kern/kern_mutex.c Modified: head/sys/kern/kern_mutex.c ============================================================================== --- head/sys/kern/kern_mutex.c Wed May 18 03:19:53 2016 (r300102) +++ head/sys/kern/kern_mutex.c Wed May 18 03:21:21 2016 (r300103) @@ -714,7 +714,8 @@ retry: LOCK_LOG_LOCK("LOCK", &m->lock_object, opts, m->mtx_recurse, file, line); WITNESS_LOCK(&m->lock_object, opts | LOP_EXCLUSIVE, file, line); - LOCKSTAT_RECORD1(thread__spin, m, spin_time); + if (spin_time != 0) + LOCKSTAT_RECORD1(thread__spin, m, spin_time); } struct mtx *
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