From nobody Wed Apr 8 14:27:49 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66471ECAAD3 for ; Fri, 9 Sep 2022 13:04:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231559AbiIINEs (ORCPT ); Fri, 9 Sep 2022 09:04:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230021AbiIINDa (ORCPT ); Fri, 9 Sep 2022 09:03:30 -0400 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDA8F10C98D for ; Fri, 9 Sep 2022 06:03:28 -0700 (PDT) Received: by mail-wm1-x32a.google.com with SMTP id n17-20020a05600c3b9100b003b3235574dbso1262933wms.2 for ; Fri, 09 Sep 2022 06:03:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date; bh=ShOnvvH2vqswW8cX/k2qHv7+hfeakBkSeirHaU9mNjk=; b=d4M6oTQTnjBsjWhNKa70McX6AvVURQd47g1V12uRxNdComNhjCeVuEODh+nV76IVxr pOCD/PbU4wZ/mssNETspS/X+dFTTTSZ1cgmKNQXwuDNXiVzbb479GLFmTGQU5MMsHXmj a7p5p0vDtv9HTPB/SasjUowr1S9W0tHsXYg6hP/Jy9SC3XANx9Cj64CLMxCkpibdrLtq R2GLX7uF3qvv8//i93k6Q5zEeC+GDgJfIVFW69mC9xxMPYz2b6j9L9H+ENo7YkCARrLQ GHHDPSfwTJrzastBddKuvsgQ3uze27W77we/RYzhR1OkKtlu+68exg0eBXCxMyQh/QWZ srxw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date; bh=ShOnvvH2vqswW8cX/k2qHv7+hfeakBkSeirHaU9mNjk=; b=ZGMzkY2qYRHc5/jtAthIGuF2hOtp9uhAmezktbYEpDSpCj1yDXr0mwXDBaXWQ8gRlK tNk2qAJf4V5MW2HHtpBymUQNIFf30g0rbZHcpdkoOJ1Ix3kGe20RtLmXR8eohmCgAQ7m O7wslBKOcQhaVWRMyKl8eUi/3V+rBUpV1bVDknnfTZx0G2Ve3kwZUy1qBt3/bodvcj06 F8Pvdgpx13UDM+4SInRXz6qsrdT1bCla8xRdq6RBcBc/8EMEd2480pMVBLPsRHATlbnv JiMPRBTR9Vy2CuDCYMfhb1Fpb0zdj1C5ljrnknGf6i7EAqxg3JTg4vOdrc9ZShXoPqdK X0IA== X-Gm-Message-State: ACgBeo1IuZrSzZU+2WlpkGClNGSh9jN8KUNn6f9Bia66KfhrLx2dQ6/3 zXMb3BlD6d0HXh4TUjkqwY3R8g== X-Google-Smtp-Source: AA6agR7hmyS9LSv3EJFIQ4+FDrc7/3egK7U8v+wC8ZsYhBP4S//sVJVQaoOWi5l1QMrqQ8pxzs1fmQ== X-Received: by 2002:a05:600c:3d19:b0:3a5:c6ef:a875 with SMTP id bh25-20020a05600c3d1900b003a5c6efa875mr5277822wmb.66.1662728606799; Fri, 09 Sep 2022 06:03:26 -0700 (PDT) Received: from localhost.localdomain ([2a01:e0a:f:6020:c6e:e86:ab92:92b7]) by smtp.gmail.com with ESMTPSA id m10-20020a05600c3b0a00b003a5f4fccd4asm569909wms.35.2022.09.09.06.03.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Sep 2022 06:03:26 -0700 (PDT) From: Vincent Guittot To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, linux-kernel@vger.kernel.org, parth@linux.ibm.com Cc: qais.yousef@arm.com, chris.hyser@oracle.com, valentin.schneider@arm.com, patrick.bellasi@matbug.net, David.Laight@aculab.com, pjt@google.com, pavel@ucw.cz, tj@kernel.org, qperret@google.com, tim.c.chen@linux.intel.com, joshdon@google.com, Vincent Guittot Subject: [PATCH v3 7/8] sched/core: support latency priority with sched core Date: Fri, 9 Sep 2022 15:03:08 +0200 Message-Id: <20220909130309.25458-8-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220909130309.25458-1-vincent.guittot@linaro.org> References: <20220909130309.25458-1-vincent.guittot@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Take into account wakeup_latency_gran() when ordering the cfs threads. Signed-off-by: Vincent Guittot --- kernel/sched/fair.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 6cc4f2a9725d..7563fb16aba1 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -11444,6 +11444,10 @@ bool cfs_prio_less(struct task_struct *a, struct t= ask_struct *b, bool in_fi) delta =3D (s64)(sea->vruntime - seb->vruntime) + (s64)(cfs_rqb->min_vruntime_fi - cfs_rqa->min_vruntime_fi); =20 + /* Take into account latency prio */ + delta -=3D wakeup_latency_gran(sea, seb); + + return delta > 0; } #else --=20 2.17.1