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([2a01:e0a:f:6020:a004:6e24:43ee:dd81]) by smtp.gmail.com with ESMTPSA id fc7-20020a05600c524700b0040c44cb251dsm9078291wmb.46.2023.12.12.06.27.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Dec 2023 06:27:35 -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-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 0/5] Rework system pressure interface to the scheduler Date: Tue, 12 Dec 2023 15:27:26 +0100 Message-Id: <20231212142730.998913-1-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-trace-kernel@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/ Vincent Guittot (4): 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 arch/arm/include/asm/topology.h | 6 +-- arch/arm64/include/asm/topology.h | 6 +-- drivers/base/arch_topology.c | 26 ++++----- drivers/cpufreq/cpufreq.c | 48 +++++++++++++++++ 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 | 53 ++++++++++--------- kernel/sched/pelt.c | 18 +++---- kernel/sched/pelt.h | 16 +++--- kernel/sched/sched.h | 4 +- 17 files changed, 152 insertions(+), 94 deletions(-) rename include/trace/events/{thermal_pressure.h => hw_pressure.h} (55%)