From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7151C7618F for ; Fri, 26 Jul 2019 19:19:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8532B218B8 for ; Fri, 26 Jul 2019 19:19:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388747AbfGZTTv (ORCPT ); Fri, 26 Jul 2019 15:19:51 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:50187 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388521AbfGZTS6 (ORCPT ); Fri, 26 Jul 2019 15:18:58 -0400 Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hr5jz-00019z-KV; Fri, 26 Jul 2019 21:18:55 +0200 Message-Id: <20190726185753.077004842@linutronix.de> User-Agent: quilt/0.65 Date: Fri, 26 Jul 2019 20:30:52 +0200 From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Steven Rostedt , Sebastian Siewior , Anna-Maria Gleixner , Arnaldo Carvalho de Melo , Jiri Olsa , Paolo Bonzini , Juergen Gross Subject: [patch 04/12] sched: Mark hrtimers to expire in hard interrupt context References: <20190726183048.982726647@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Gleixner The scheduler related hrtimers need to expire in hard interrupt context even on PREEMPT_RT enabled kernels. Mark then as such. No functional change. [ tglx: Split out from larger combo patch. Add changelog. ] Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner --- kernel/sched/core.c | 2 +- kernel/sched/deadline.c | 2 +- kernel/sched/fair.c | 6 ++++-- kernel/sched/rt.c | 4 ++-- 4 files changed, 8 insertions(+), 6 deletions(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -328,7 +328,7 @@ static void hrtick_rq_init(struct rq *rq rq->hrtick_csd.info = rq; #endif - hrtimer_init(&rq->hrtick_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(&rq->hrtick_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); rq->hrtick_timer.function = hrtick; } #else /* CONFIG_SCHED_HRTICK */ --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1053,7 +1053,7 @@ void init_dl_task_timer(struct sched_dl_ { struct hrtimer *timer = &dl_se->dl_timer; - hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); timer->function = dl_task_timer; } --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4972,9 +4972,11 @@ void init_cfs_bandwidth(struct cfs_bandw cfs_b->period = ns_to_ktime(default_cfs_period()); INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); - hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED); + hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, + HRTIMER_MODE_ABS_PINNED_HARD); cfs_b->period_timer.function = sched_cfs_period_timer; - hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, + HRTIMER_MODE_REL_HARD); cfs_b->slack_timer.function = sched_cfs_slack_timer; cfs_b->distribute_running = 0; cfs_b->slack_started = false; --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -45,8 +45,8 @@ void init_rt_bandwidth(struct rt_bandwid raw_spin_lock_init(&rt_b->rt_runtime_lock); - hrtimer_init(&rt_b->rt_period_timer, - CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(&rt_b->rt_period_timer, CLOCK_MONOTONIC, + HRTIMER_MODE_REL_HARD); rt_b->rt_period_timer.function = sched_rt_period_timer; }