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authorDaniel Lezcano <daniel.lezcano@linaro.org>2014-03-17 12:17:30 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-04-08 12:37:05 +0200
commit9bc0482feae8763447746c89fd971704c819b52e (patch)
treecd6481ed20159d0dd8d21dcfba7a08ac3f04a880 /drivers/cpuidle
parent70f6c087573eeb406252ff8d98f511eb5f71496e (diff)
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>
Diffstat (limited to 'drivers/cpuidle')
-rw-r--r--drivers/cpuidle/sysfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index e918b6d0caf..efe2f175168 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -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,