From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755673Ab2IARpz (ORCPT ); Sat, 1 Sep 2012 13:45:55 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:59081 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1753628Ab2IARod (ORCPT ); Sat, 1 Sep 2012 13:44:33 -0400 X-IronPort-AV: E=Sophos;i="4.80,353,1344182400"; d="scan'208";a="5764900" From: Lai Jiangshan To: Tejun Heo , linux-kernel@vger.kernel.org Cc: Lai Jiangshan Subject: [PATCH 06/10 V4] workqueue: simple clear WORKER_REBIND Date: Sun, 2 Sep 2012 00:28:24 +0800 Message-Id: <1346516916-1991-7-git-send-email-laijs@cn.fujitsu.com> X-Mailer: git-send-email 1.7.4.4 In-Reply-To: <1346516916-1991-1-git-send-email-laijs@cn.fujitsu.com> References: <1346516916-1991-1-git-send-email-laijs@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/09/02 00:27:25, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/09/02 00:28:32, Serialize complete at 2012/09/02 00:28:32 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org WORKER_REBIND is not used for other purpose, idle_worker_rebind() can directly clear it. Signed-off-by: Lai Jiangshan --- kernel/workqueue.c | 13 ++----------- 1 files changed, 2 insertions(+), 11 deletions(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 55864d1..9466d91 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1332,6 +1332,7 @@ static void idle_worker_rebind(struct worker *worker) { /* CPU must be online at this point */ WARN_ON(!worker_maybe_bind_and_lock(worker)); + worker_clr_flags(worker, WORKER_REBIND); ++worker->idle_rebind->ref_cnt; if (!--worker->idle_rebind->idle_cnt) complete(&worker->idle_rebind->idle_done); @@ -1420,7 +1421,7 @@ retry: /* set REBIND and kick idle ones, we'll wait for these later */ for_each_worker_pool(pool, gcwq) { list_for_each_entry(worker, &pool->idle_list, entry) { - if (worker->flags & WORKER_REBIND) + if (!(worker->flags & WORKER_UNBOUND)) continue; /* morph UNBOUND to REBIND */ @@ -1443,16 +1444,6 @@ retry: goto retry; } - /* - * All idle workers are rebound and waiting for %WORKER_REBIND to - * be cleared inside idle_worker_rebind(). Clear and release. - * Clearing %WORKER_REBIND from this foreign context is safe - * because these workers are still guaranteed to be idle. - */ - for_each_worker_pool(pool, gcwq) - list_for_each_entry(worker, &pool->idle_list, entry) - worker->flags &= ~WORKER_REBIND; - complete_all(&idle_rebind.rebind_hold); /* rebind busy workers */ -- 1.7.4.4