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cpuidle: sysfs: Export target residency information 

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>
This commit is contained in:
Daniel Lezcano 2014-03-17 12:17:30 +01:00 committed by Rafael J. Wysocki
parent 70f6c08757
commit 9bc0482fea
1 changed files with 3 additions and 0 deletions
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3
drivers/cpuidle/sysfs.c
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@ -293,6 +293,7 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, \
} }
define_show_state_function(exit_latency) define_show_state_function(exit_latency)
define_show_state_function(target_residency)
define_show_state_function(power_usage) define_show_state_function(power_usage)
define_show_state_ull_function(usage) define_show_state_ull_function(usage)
define_show_state_ull_function(time) 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(name, show_state_name);
define_one_state_ro(desc, show_state_desc); define_one_state_ro(desc, show_state_desc);
define_one_state_ro(latency, show_state_exit_latency); 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(power, show_state_power_usage);
define_one_state_ro(usage, show_state_usage); define_one_state_ro(usage, show_state_usage);
define_one_state_ro(time, show_state_time); define_one_state_ro(time, show_state_time);
@ -313,6 +315,7 @@ static struct attribute *cpuidle_state_default_attrs[] = {
&attr_name.attr, &attr_name.attr,
&attr_desc.attr, &attr_desc.attr,
&attr_latency.attr, &attr_latency.attr,
&attr_residency.attr,
&attr_power.attr, &attr_power.attr,
&attr_usage.attr, &attr_usage.attr,
&attr_time.attr, &attr_time.attr,