From patchwork Thu Dec 21 15:24:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Guittot X-Patchwork-Id: 757356 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0F104F1E9 for ; Thu, 21 Dec 2023 15:24:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="QggNSoTd" Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-40c31f18274so11455665e9.0 for ; Thu, 21 Dec 2023 07:24:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1703172251; x=1703777051; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=/XnYWAWl26fljdZ1eq0DEOr8xRmoWq9IceEo0OwSXEM=; b=QggNSoTdaYxq6TU52fd+iZ0QgGGxnXa5MzBPetB2T6yNaQ9CJjxWSGTreX9zZQTmAm +LpTVF/Ju8qtYCcM/w79mtsPCVjKDDsTRy2nCkkf0Ff83OjBrmJZlA68rUZqsl9lPJR8 sK3FHAkUfoc/9xR1TPtWSGkEP2QGsMDX7J+GTV3+ppEUmGRpLE6s5xdMF27+45tvnyd9 8CDepM0xiobzvOIpL34qXyXMXKlYPbV5mvMIgoYGDlKHUfHuJ336tb6xa5erTwwx2Es8 x76cldVkhK6ZET+KWP67ceCp0zfVu171c3vas+D71REVpSyUJXWGeFA4+JUad3C5jmMb l0HQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703172251; x=1703777051; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=/XnYWAWl26fljdZ1eq0DEOr8xRmoWq9IceEo0OwSXEM=; b=RtLBR2xz+bgziM7wI02VyVAfprLW7biZZuHz4X1l3FeDnOzzrTX/wQaQ0TPMYQzoL5 c7EhFBxQYi5VoeeKZKY9u8HXi1CWSPaOHVTRqCNLUEF19z/JUt+TeUCgCATjmKoV70IB R+ncMw5Ep4U6wfhdDRFol5GNWr6zp0raNLagUtWuGOA6ZuPq7q86cUTyRHZkEpDiqtFQ PNWrjmrHpQQKXhXFCfEVCr0H65bJifnJKdIwjKsnUceXsGfnAzRVY9jxzckuDBN7Zyd+ Sa7ugCci6K4Z6xiL7qZ8NSoT9bFVcPRPzr/iH7biBLNgTCdhO2ydRcM0jYL5y6OIi/Jg kUGA== X-Gm-Message-State: AOJu0Yyk/KdJQsNS3Yc78s2UHPe/JjDsU2Edth5tc+uka2jsyqH1Fwk/ bmKTqdqMw9W6vmdxCD8ClxX4UHrW0q8j2DfxdAOAHA== X-Google-Smtp-Source: AGHT+IGHy1A1RTCdL6pRPW1PyWOXhl6RuneTu+2GCu8vndp3F2NPHNxrmP0VXwZLO7mpsjJUq7SHGA== X-Received: by 2002:a1c:7411:0:b0:40d:177e:c024 with SMTP id p17-20020a1c7411000000b0040d177ec024mr840724wmc.187.1703172250872; Thu, 21 Dec 2023 07:24:10 -0800 (PST) Received: from vingu-book.. ([2a01:e0a:f:6020:2db4:9d2a:db65:42d6]) by smtp.gmail.com with ESMTPSA id t3-20020a05600c450300b0040c4acaa4bfsm11466974wmo.19.2023.12.21.07.24.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Dec 2023 07:24:10 -0800 (PST) From: Vincent Guittot To: catalin.marinas@arm.com, will@kernel.org, sudeep.holla@arm.com, rafael@kernel.org, viresh.kumar@linaro.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, 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, lukasz.luba@arm.com, rui.zhang@intel.com, mhiramat@kernel.org, daniel.lezcano@linaro.org, amit.kachhap@gmail.com, linux@armlinux.org.uk, corbet@lwn.net, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Vincent Guittot Subject: [PATCH v2 0/5] Rework system pressure interface to the scheduler Date: Thu, 21 Dec 2023 16:24:02 +0100 Message-Id: <20231221152407.436177-1-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Following the consolidation and cleanup of CPU capacity in [1], this serie reworks how the scheduler gets the pressures on CPUs. We need to take into account all pressures applied by cpufreq on the compute capacity of a CPU for dozens of ms or more and not only cpufreq cooling device or HW mitigiations. we split the pressure applied on CPU's capacity in 2 parts: - one from cpufreq and freq_qos - one from HW high freq mitigiation. The next step will be to add a dedicated interface for long standing capping of the CPU capacity (i.e. for seconds or more) like the scaling_max_freq of cpufreq sysfs. The latter is already taken into account by this serie but as a temporary pressure which is not always the best choice when we know that it will happen for seconds or more. [1] https://lore.kernel.org/lkml/20231211104855.558096-1-vincent.guittot@linaro.org/ Change since v1: - Use struct cpufreq_policy as parameter of cpufreq_update_pressure() - Fix typos and comments - Make sched_thermal_decay_shift boot param as deprecated Vincent Guittot (5): cpufreq: Add a cpufreq pressure feedback for the scheduler sched: Take cpufreq feedback into account thermal/cpufreq: Remove arch_update_thermal_pressure() sched: Rename arch_update_thermal_pressure into arch_update_hw_pressure sched/pelt: Remove shift of thermal clock .../admin-guide/kernel-parameters.txt | 1 + arch/arm/include/asm/topology.h | 6 +- arch/arm64/include/asm/topology.h | 6 +- drivers/base/arch_topology.c | 26 ++++---- drivers/cpufreq/cpufreq.c | 34 ++++++++++ drivers/cpufreq/qcom-cpufreq-hw.c | 4 +- drivers/thermal/cpufreq_cooling.c | 3 - include/linux/arch_topology.h | 8 +-- include/linux/cpufreq.h | 10 +++ include/linux/sched/topology.h | 8 +-- .../{thermal_pressure.h => hw_pressure.h} | 14 ++--- include/trace/events/sched.h | 2 +- init/Kconfig | 12 ++-- kernel/sched/core.c | 8 +-- kernel/sched/fair.c | 63 +++++++++---------- kernel/sched/pelt.c | 18 +++--- kernel/sched/pelt.h | 16 ++--- kernel/sched/sched.h | 22 +------ 18 files changed, 142 insertions(+), 119 deletions(-) rename include/trace/events/{thermal_pressure.h => hw_pressure.h} (55%) Acked-by: Rafael J. Wysocki