From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752851AbbBZE3j (ORCPT ); Wed, 25 Feb 2015 23:29:39 -0500 Received: from mga14.intel.com ([192.55.52.115]:62430 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751852AbbBZE3i (ORCPT ); Wed, 25 Feb 2015 23:29:38 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,650,1418112000"; d="scan'208";a="683596435" From: Wanpeng Li To: Ingo Molnar , Peter Zijlstra Cc: Juri Lelli , linux-kernel@vger.kernel.org, Wanpeng Li Subject: [PATCH] sched/deadline: don't need to check throttled status when switched to dl Date: Thu, 26 Feb 2015 12:11:04 +0800 Message-Id: <1424923864-3001-1-git-send-email-wanpeng.li@linux.intel.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org After commit 40767b0dc768 ("sched/deadline: Fix deadline parameter modification handling"), deadline task throttled status is cleared each time switch from dl, so throttled status always unset when switch back, there is no need to check throttled status, this patch drop the check. Signed-off-by: Wanpeng Li --- kernel/sched/deadline.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index ca391c0..cfb8fa7 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1697,14 +1697,6 @@ static void switched_to_dl(struct rq *rq, struct task_struct *p) { int check_resched = 1; - /* - * If p is throttled, don't consider the possibility - * of preempting rq->curr, the check will be done right - * after its runtime will get replenished. - */ - if (unlikely(p->dl.dl_throttled)) - return; - if (task_on_rq_queued(p) && rq->curr != p) { #ifdef CONFIG_SMP if (p->nr_cpus_allowed > 1 && rq->dl.overloaded && -- 1.9.1