cpuidle: Respect the CPU system wakeup QoS limit for cpuidle

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.

Reviewed-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com>
Tested-by: Kevin Hilman (TI) <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://patch.msgid.link/20251125112650.329269-6-ulf.hansson@linaro.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c
index 0d0f9751ff8fabf400dae1779e2c8cf79285873f..5d0e7f78c6c5152139a76c919f45771bf6623176 100644 (file)
--- 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 = get_cpu_device(cpu);
        int device_req = dev_pm_qos_raw_resume_latency(device);
        int global_req = cpu_latency_qos_limit();
+       int global_wake_req = cpu_wakeup_latency_qos_limit();
+
+       if (global_req > global_wake_req)
+               global_req = global_wake_req;
 
        if (device_req > global_req)
                device_req = global_req;