cpuidle: Make cpuidle governor switchable to be the default behaviour (b52e93e4) · Commits · 戴 / test

For now cpuidle governor can be switched via sysfs only when the boot option "cpuidle_sysfs_switch" is passed, but it's important to switch the governor to adapt to different workloads, especially after TEO and haltpoll governor were introduced. Add available_governors and current_governor into the default attributes, but reserve the current_governor_ro for compatiblity. Signed-off-by:

Hanjun Guo <guohanjun@huawei.com> Reviewed-by:

Doug Smythies <dsmythies@telus.net> Tested-by:

Doug Smythies <dsmythies@telus.net> Acked-by:

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

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpuidle/sysfs.c

+5 −4

Original line number	Diff line number	Diff line
		@@ -106,19 +106,20 @@ static ssize_t store_current_governor(struct device *dev,
		return ret ? ret : count;
		}

		static DEVICE_ATTR(available_governors, 0444, show_available_governors, NULL);
		static DEVICE_ATTR(current_driver, 0444, show_current_driver, NULL);
		static DEVICE_ATTR(current_governor, 0644, show_current_governor,
		store_current_governor);
		static DEVICE_ATTR(current_governor_ro, 0444, show_current_governor, NULL);

		static struct attribute *cpuidle_default_attrs[] = {
		&dev_attr_available_governors.attr,
		&dev_attr_current_driver.attr,
		&dev_attr_current_governor.attr,
		&dev_attr_current_governor_ro.attr,
		NULL
		};

		static DEVICE_ATTR(available_governors, 0444, show_available_governors, NULL);
		static DEVICE_ATTR(current_governor, 0644, show_current_governor,
		store_current_governor);

		static struct attribute *cpuidle_switch_attrs[] = {
		&dev_attr_available_governors.attr,
		&dev_attr_current_driver.attr,

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