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(h-178-174-189-39.A498.priv.bahnhof.se. [178.174.189.39]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-37cc6b597b2sm11056181fa.12.2025.11.21.02.03.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Nov 2025 02:03:43 -0800 (PST) From: Ulf Hansson To: "Rafael J . Wysocki" , linux-pm@vger.kernel.org Cc: Vincent Guittot , Peter Zijlstra , Kevin Hilman , Pavel Machek , Len Brown , Daniel Lezcano , Maulik Shah , Prasad Sodagudi , Dhruva Gole , Deepti Jaggi , Ulf Hansson , linux-kernel@vger.kernel.org Subject: [PATCH v3 5/6] cpuidle: Respect the CPU system wakeup QoS limit for cpuidle Date: Fri, 21 Nov 2025 11:03:11 +0100 Message-ID: <20251121100315.316300-6-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251121100315.316300-1-ulf.hansson@linaro.org> References: <20251121100315.316300-1-ulf.hansson@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The CPU system wakeup QoS limit must be respected for the regular cpuidle state selection. Therefore, let's extend the common governor helper cpuidle_governor_latency_req(), to take the constraint into account. Signed-off-by: Ulf Hansson Reviewed-by: Dhruva Gole --- Changes in v3: - New patch. --- drivers/cpuidle/governor.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c index 0d0f9751ff8f..5d0e7f78c6c5 100644 --- a/drivers/cpuidle/governor.c +++ b/drivers/cpuidle/governor.c @@ -111,6 +111,10 @@ s64 cpuidle_governor_latency_req(unsigned int cpu) struct device *device =3D get_cpu_device(cpu); int device_req =3D dev_pm_qos_raw_resume_latency(device); int global_req =3D cpu_latency_qos_limit(); + int global_wake_req =3D cpu_wakeup_latency_qos_limit(); + + if (global_req > global_wake_req) + global_req =3D global_wake_req; =20 if (device_req > global_req) device_req =3D global_req; --=20 2.43.0