cpuidle: sysfs: Export target residency information (9bc0482f) · Commits · 戴 / test

From user space, there is no way to know the target residency for each idle state. If we want to write tools to measure the accuracy of the idle state selection from the governor, we need this info. As the exit latency is exported through sysfs, exporting the target residency in the same place makes sense. Signed-off-by:

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

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

drivers/cpuidle/sysfs.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -293,6 +293,7 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, \
		}

		define_show_state_function(exit_latency)
		define_show_state_function(target_residency)
		define_show_state_function(power_usage)
		define_show_state_ull_function(usage)
		define_show_state_ull_function(time)
		@@ -304,6 +305,7 @@ define_store_state_ull_function(disable)
		define_one_state_ro(name, show_state_name);
		define_one_state_ro(desc, show_state_desc);
		define_one_state_ro(latency, show_state_exit_latency);
		define_one_state_ro(residency, show_state_target_residency);
		define_one_state_ro(power, show_state_power_usage);
		define_one_state_ro(usage, show_state_usage);
		define_one_state_ro(time, show_state_time);
		@@ -313,6 +315,7 @@ static struct attribute *cpuidle_state_default_attrs[] = {
		&attr_name.attr,
		&attr_desc.attr,
		&attr_latency.attr,
		&attr_residency.attr,
		&attr_power.attr,
		&attr_usage.attr,
		&attr_time.attr,

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