From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755782AbbDNVKG (ORCPT ); Tue, 14 Apr 2015 17:10:06 -0400 Received: from www.linutronix.de ([62.245.132.108]:38075 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755535AbbDNVIp (ORCPT ); Tue, 14 Apr 2015 17:08:45 -0400 Message-Id: <20150414203502.627353666@linutronix.de> User-Agent: quilt/0.63-1 Date: Tue, 14 Apr 2015 21:09:06 -0000 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Ingo Molnar , Preeti U Murthy , Viresh Kumar , Marcelo Tosatti , Frederic Weisbecker Subject: [patch 25/39] sched: deadline: Use hrtimer_start() References: <20150414203303.702062272@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=sched-deadline-use-hrtimer-start.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001,URIBL_BLOCKED=0.001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hrtimer_start() does not longer defer already expired timers to the softirq. Get rid of the __hrtimer_start_range_ns() invocation. Signed-off-by: Thomas Gleixner --- kernel/sched/deadline.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) Index: tip/kernel/sched/deadline.c =================================================================== --- tip.orig/kernel/sched/deadline.c +++ tip/kernel/sched/deadline.c @@ -457,8 +457,6 @@ static int start_dl_timer(struct sched_d struct dl_rq *dl_rq = dl_rq_of_se(dl_se); struct rq *rq = rq_of_dl_rq(dl_rq); ktime_t now, act; - ktime_t soft, hard; - unsigned long range; s64 delta; if (boosted) @@ -481,15 +479,9 @@ static int start_dl_timer(struct sched_d if (ktime_us_delta(act, now) < 0) return 0; - hrtimer_set_expires(&dl_se->dl_timer, act); + hrtimer_start(&dl_se->dl_timer, act, HRTIMER_MODE_ABS); - soft = hrtimer_get_softexpires(&dl_se->dl_timer); - hard = hrtimer_get_expires(&dl_se->dl_timer); - range = ktime_to_ns(ktime_sub(hard, soft)); - __hrtimer_start_range_ns(&dl_se->dl_timer, soft, - range, HRTIMER_MODE_ABS, 0); - - return hrtimer_active(&dl_se->dl_timer); + return 1; } /*