thermal: cpuidle: Register cpuidle cooling device (fc7a3d9e) · Commits · 戴 / test

The cpuidle driver can be used as a cooling device by injecting idle cycles. When the property is set, register the cpuidle driver with the idle state node pointer as a cooling device. The thermal framework will do the association automatically with the thermal zone via the cooling-device defined in the device tree cooling-maps section. Signed-off-by:

Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by:

Lukasz Luba <lukasz.luba@arm.com> Reviewed-by:

Amit Kucheria <amit.kucheria@linaro.org> Acked-by:

Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20200429103644.5492-4-daniel.lezcano@linaro.org

drivers/cpuidle/cpuidle-arm.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,7 @@

		#define pr_fmt(fmt) "CPUidle arm: " fmt

		#include <linux/cpu_cooling.h>
		#include <linux/cpuidle.h>
		#include <linux/cpumask.h>
		#include <linux/cpu_pm.h>
		@@ -124,6 +125,8 @@ static int __init arm_idle_init_cpu(int cpu)
		if (ret)
		goto out_kfree_drv;

		cpuidle_cooling_register(drv);

		return 0;

		out_kfree_drv:

drivers/cpuidle/cpuidle-psci.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@
		#define pr_fmt(fmt) "CPUidle PSCI: " fmt

		#include <linux/cpuhotplug.h>
		#include <linux/cpu_cooling.h>
		#include <linux/cpuidle.h>
		#include <linux/cpumask.h>
		#include <linux/cpu_pm.h>
		@@ -313,6 +314,8 @@ static int __init psci_idle_init_cpu(int cpu)
		if (ret)
		goto out_kfree_drv;

		cpuidle_cooling_register(drv);

		return 0;

		out_kfree_drv:

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