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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19A61C64ED8 for ; Fri, 24 Feb 2023 09:35:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229893AbjBXJfW (ORCPT ); Fri, 24 Feb 2023 04:35:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229839AbjBXJfU (ORCPT ); Fri, 24 Feb 2023 04:35:20 -0500 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15516662A3 for ; Fri, 24 Feb 2023 01:35:09 -0800 (PST) Received: by mail-wm1-x329.google.com with SMTP id fm20-20020a05600c0c1400b003ead37e6588so1654927wmb.5 for ; Fri, 24 Feb 2023 01:35:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jFfq5teius6pAK1nmf1oSiYVaS3V8Wiqx9qF8KZNMCQ=; b=UPtzcx8EFj1zlSxQ6lMU0mkanMgYYtKeaO2lWxoPNm90eUsDg5dZ1+YuhJFLZ9eA1C GwVX/XBU0wi8bbZqS4brymorHHXxUfabheM649o6i0SQ/aVibdS9bgWV9lK6GXWoyCxV DDBMfSwJFsDs+VxTsL6tGbeInl0ZqUq5wfYvFDMQ9DRbPWoCbA/6Cvincqhb8n8A/JMv yF2u9O9DHpm/uv9CcBKmrH4ca42lGrIqrseUJRNneFVCwHJafcuPzxjA18lvOlidR6dV 8ry4CjCYix+BYGvJUnF6KeUvdaZAfzJwDqJXYi1r+dRV7oZAoBl3+BLYwTygm+t5PEOr SgfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jFfq5teius6pAK1nmf1oSiYVaS3V8Wiqx9qF8KZNMCQ=; b=DC/TuQkdUiytrI6YNI5bC9JVnQVDj53ksGEp55CFVAYhe0uKBdw5RCiq6MBJ6vdFL9 RuKUTvYhkcrK1eSCgvubKBC3k+6dn0IbZQJKVQYl4IkB4E9KWKFQ53wEl/NvHT4YyHF/ vxS9sCNQYq/N0CJHBhc/nu55GHlJq5RnQyK6vIbSnqSYTM/wu01s7pS86ymfuzJZzhIr uOwNn+68PjoZncBgNNCWaOeInW3m0Zvq8ZJ0BPdIxSY3SK9hF4tgvNNFUKTLyVQecmEV GozHyd/AauqDpf1yMnteDa7sGJKguPgOfYzhrhHvfLPWpdAlV281YIsKkbNDYanqVGSi oa4g== X-Gm-Message-State: AO0yUKXmFchkKZX8o+1I86npLcrXJVk/HyN/XqDC4BUfNmadX8PXij3C Dhfv2xeVZ90QM8IH/df+BcX6cQ== X-Google-Smtp-Source: AK7set8uakOUbvmySBPvXTJA5HuapKBeA4BG/N82btii8y/1ofW049QHU4eTRDVwR0fxueKtyIIuAw== X-Received: by 2002:a05:600c:1da2:b0:3ea:ed4d:38fc with SMTP id p34-20020a05600c1da200b003eaed4d38fcmr2179606wms.31.1677231307168; Fri, 24 Feb 2023 01:35:07 -0800 (PST) Received: from vingu-book.. ([2a01:e0a:f:6020:a6f0:4ee9:c103:44cb]) by smtp.gmail.com with ESMTPSA id d18-20020a05600c34d200b003e6dcd562a6sm2239179wmq.28.2023.02.24.01.35.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Feb 2023 01:35:06 -0800 (PST) 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, tj@kernel.org, lizefan.x@bytedance.com, hannes@cmpxchg.org, cgroups@vger.kernel.org, corbet@lwn.net, linux-doc@vger.kernel.org Cc: qyousef@layalina.io, chris.hyser@oracle.com, patrick.bellasi@matbug.net, David.Laight@aculab.com, pjt@google.com, pavel@ucw.cz, qperret@google.com, tim.c.chen@linux.intel.com, joshdon@google.com, timj@gnu.org, kprateek.nayak@amd.com, yu.c.chen@intel.com, youssefesmat@chromium.org, joel@joelfernandes.org, Vincent Guittot Subject: [PATCH v12 7/8] sched/core: Support latency priority with sched core Date: Fri, 24 Feb 2023 10:34:53 +0100 Message-Id: <20230224093454.956298-8-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230224093454.956298-1-vincent.guittot@linaro.org> References: <20230224093454.956298-1-vincent.guittot@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Take into account wakeup_latency_gran() when ordering the cfs threads. Signed-off-by: Vincent Guittot Tested-by: K Prateek Nayak --- kernel/sched/fair.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index dc7570f43ebe..125a6ff53378 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -11949,6 +11949,9 @@ bool cfs_prio_less(const struct task_struct *a, const struct task_struct *b, delta = (s64)(sea->vruntime - seb->vruntime) + (s64)(cfs_rqb->min_vruntime_fi - cfs_rqa->min_vruntime_fi); + /* Take into account latency offset */ + delta -= wakeup_latency_gran(sea, seb); + return delta > 0; } #else -- 2.34.1