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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 4F06AC10F13 for ; Tue, 16 Apr 2019 19:38:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1D52D20821 for ; Tue, 16 Apr 2019 19:38:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="dPULVRJj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730301AbfDPTi4 (ORCPT ); Tue, 16 Apr 2019 15:38:56 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:36414 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729785AbfDPTit (ORCPT ); Tue, 16 Apr 2019 15:38:49 -0400 Received: by mail-qt1-f195.google.com with SMTP id s15so24745855qtn.3 for ; Tue, 16 Apr 2019 12:38:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=KNbekIfBRRm8uM1KdnvYGnhJo7PPeihMU4LxOw05fOc=; b=dPULVRJjB3vqxeNVjKurm9q6bgO2XVeQgLiDeXQptGe8f2megTmgP6kpFst3QBJfZW W5bGXDdhGFOMqMwcD8oiGUCOofULwc5Q43oCKAfUdUZXkG2VgW8efkNuJR2fsOzJZpbX 4UR0+IMSYJFc1S6HkZIrhiQXW+6Od/uwjGdhoJFdOjvkUoakOPX8Dk9QiDnhDiqtkFzB bcFEHaYNs+swYiwsToSJh3pNQc/C9icY3uLvZpz1ozTB0TvZZ1ViMYqHLq4Uy5CoaFSg hsYUAbEIOXkWmXLPusFcxBldxHFkWLAoEuIcVT43pUvTsr07s5LmvZutt8TOW874to1S k6+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=KNbekIfBRRm8uM1KdnvYGnhJo7PPeihMU4LxOw05fOc=; b=WBdrdeCZqHi088S2x7WH3/HNf7tmr3r/GANdUcJUj5xDKUFoFOpSKxzUZWic+tEVLt +t8J8FN3Dnrkb4LYkyTIdMlCJ7hcGIUC49435Y7bRUFUYBUbz/YiTA1/OLbsNrdngek1 27qsH1BefVxTAje4HTFAp5qk5Z1+wyEzibNdDs2P8kEN21SjaymnZwWVAxB3uu/LbIZb 6NnoRM6KSCEvTnG980U5bZtD8hitIY4lFmYMHYUEFT6+AvIECwn3bQS5Jz1mACC5vzl3 /oCw0qHWUA0NbkL4PEBMciagHWE6wkjhkRGaCjDhcU4Mt+XeAqbgyNtqxbaMP3X9miyU A2Kg== X-Gm-Message-State: APjAAAUJB51+ZpPXM7Kevlw1SatEmYibNVfYnkIUg6nnWbagqf+GYep8 StsNbLSP4i2kSNTJQ8NitT6wag== X-Google-Smtp-Source: APXvYqxRXonfPGuecbZLV9V8yrw+bJDae8Sdq8WQ2Q9QaffTrkrM+mI6pRrrhevIbcj2RboR0TDYZg== X-Received: by 2002:a0c:d2f2:: with SMTP id x47mr64643661qvh.90.1555443527688; Tue, 16 Apr 2019 12:38:47 -0700 (PDT) Received: from Thara-Work-Ubuntu.fios-router.home (pool-71-255-245-97.washdc.fios.verizon.net. [71.255.245.97]) by smtp.googlemail.com with ESMTPSA id k41sm46150797qtc.89.2019.04.16.12.38.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 16 Apr 2019 12:38:47 -0700 (PDT) From: Thara Gopinath To: mingo@redhat.com, peterz@infradead.org, rui.zhang@intel.com Cc: linux-kernel@vger.kernel.org, amit.kachhap@gmail.com, viresh.kumar@linaro.org, javi.merino@kernel.org, edubezval@gmail.com, daniel.lezcano@linaro.org, vincent.guittot@linaro.org, nicolas.dechesne@linaro.org, bjorn.andersson@linaro.org, dietmar.eggemann@arm.com Subject: [PATCH V2 2/3] sched/fair: update cpu_capcity to reflect thermal pressure Date: Tue, 16 Apr 2019 15:38:40 -0400 Message-Id: <1555443521-579-3-git-send-email-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1555443521-579-1-git-send-email-thara.gopinath@linaro.org> References: <1555443521-579-1-git-send-email-thara.gopinath@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org cpu_capacity relflects the maximum available capacity of a cpu. Thermal pressure on a cpu means this maximum available capacity is reduced. This patch reduces the average thermal pressure for a cpu from its maximum available capacity so that cpu_capacity reflects the actual available capacity. Signed-off-by: Thara Gopinath --- kernel/sched/fair.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 8213ff6..c5454d3 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -23,6 +23,7 @@ #include "sched.h" #include +#include /* * Targeted preemption latency for CPU-bound tasks: @@ -7967,6 +7968,9 @@ static void update_cpu_capacity(struct sched_domain *sd, int cpu) if (!capacity) capacity = 1; + capacity *= sched_get_thermal_pressure(cpu); + capacity >>= SCHED_CAPACITY_SHIFT; + cpu_rq(cpu)->cpu_capacity = capacity; sdg->sgc->capacity = capacity; sdg->sgc->min_capacity = capacity; -- 2.1.4