Author: mav
Date: Sat Aug 24 14:41:49 2013
New Revision: 254787
URL: http://svnweb.freebsd.org/changeset/base/254787
Log:
MFprojects/camlock r254460:
Remove locking from taskqueue_member(). The list of threads is static
during the taskqueue life cycle, so there is no need to protect it,
taking quite congested lock several more times for each ZFS I/O.
Modified:
head/sys/kern/subr_taskqueue.c
Modified: head/sys/kern/subr_taskqueue.c
==============================================================================
--- head/sys/kern/subr_taskqueue.c Sat Aug 24 14:33:11 2013
(r254786)
+++ head/sys/kern/subr_taskqueue.c Sat Aug 24 14:41:49 2013
(r254787)
@@ -620,7 +620,6 @@ taskqueue_member(struct taskqueue *queue
{
int i, j, ret = 0;
- TQ_LOCK(queue);
for (i = 0, j = 0; ; i++) {
if (queue->tq_threads[i] == NULL)
continue;
@@ -631,6 +630,5 @@ taskqueue_member(struct taskqueue *queue
if (++j >= queue->tq_tcount)
break;
}
- TQ_UNLOCK(queue);
return (ret);
}
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
