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=-11.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 3973AC32751 for ; Wed, 31 Jul 2019 11:07:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C581206A2 for ; Wed, 31 Jul 2019 11:07:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="yXvNHivI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727984AbfGaLHx (ORCPT ); Wed, 31 Jul 2019 07:07:53 -0400 Received: from terminus.zytor.com ([198.137.202.136]:52321 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725935AbfGaLHx (ORCPT ); Wed, 31 Jul 2019 07:07:53 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x6VB7LPl3643621 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Wed, 31 Jul 2019 04:07:21 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 terminus.zytor.com x6VB7LPl3643621 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2019071901; t=1564571241; bh=qau+9mBfFzobTAWVjgcWejzrE1fSf0Nn9rSurgLYng8=; h=Date:From:Cc:Reply-To:In-Reply-To:References:To:Subject:From; b=yXvNHivIAbjQVSUXZRLwtXFVRPavn1BiX46khZELsuVxkT5EOuPpejIVc4ae02DSU 2FnWKglYHtJ8iN2ds31t5isQPO30ay9nEBmXgs0ABKj9/gVZN7JjaIBTEHPFZFLkYe 9HFe0PQX8UzKawOUuCFvaSWuRNkEjATD1uQNhJPGVqE+zP0JxpuPy7sCaIdRpqex58 bqv5ngdXxjURDpc2XkH7901Tm8c4vx7oNztsd75UNH2wkQd92OPGC/WOUjde3XrZo6 yCCQGOxaoDdWp+Lv80MjyeRlCgTa4enoUGh8TPQOqKnFgDf+1Krk7c3kbAzQCc0ytu z7XRWXCmH7/wQ== Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x6VB7KZO3643618; Wed, 31 Jul 2019 04:07:20 -0700 Date: Wed, 31 Jul 2019 04:07:20 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Juri Lelli Message-ID: Cc: linux-kernel@vger.kernel.org, mingo@kernel.org, hpa@zytor.com, tglx@linutronix.de, juri.lelli@redhat.com Reply-To: juri.lelli@redhat.com, tglx@linutronix.de, hpa@zytor.com, mingo@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20190731103715.4047-1-juri.lelli@redhat.com> References: <20190731103715.4047-1-juri.lelli@redhat.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:timers/core] sched/deadline: Ensure inactive_timer runs in hardirq context Git-Commit-ID: b223cc1bb098ebd1077a5390c434db411806d6b8 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: b223cc1bb098ebd1077a5390c434db411806d6b8 Gitweb: https://git.kernel.org/tip/b223cc1bb098ebd1077a5390c434db411806d6b8 Author: Juri Lelli AuthorDate: Wed, 31 Jul 2019 12:37:15 +0200 Committer: Thomas Gleixner CommitDate: Wed, 31 Jul 2019 13:01:26 +0200 sched/deadline: Ensure inactive_timer runs in hardirq context SCHED_DEADLINE inactive timer needs to run in hardirq context (as dl_task_timer already does) on PREEMPT_RT Change the mode to HRTIMER_MODE_REL_HARD. [ tglx: Fixed up the start site, so mode debugging works ] Signed-off-by: Juri Lelli Signed-off-by: Thomas Gleixner Link: https://lkml.kernel.org/r/20190731103715.4047-1-juri.lelli@redhat.com --- kernel/sched/deadline.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 0359612d5443..83a663a34196 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -287,7 +287,7 @@ static void task_non_contending(struct task_struct *p) dl_se->dl_non_contending = 1; get_task_struct(p); - hrtimer_start(timer, ns_to_ktime(zerolag_time), HRTIMER_MODE_REL); + hrtimer_start(timer, ns_to_ktime(zerolag_time), HRTIMER_MODE_REL_HARD); } static void task_contending(struct sched_dl_entity *dl_se, int flags) @@ -1292,7 +1292,7 @@ void init_dl_inactive_task_timer(struct sched_dl_entity *dl_se) { struct hrtimer *timer = &dl_se->inactive_timer; - hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); timer->function = inactive_task_timer; }