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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-03-14 12:27:21 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-03-29 13:06:08 +0200 |
| commit | 64bdff698092aa6be28c3b248f887022eec77902 (patch) | |
| tree | 312a8e3d256011d26204fce782f481aeaa5a58e2 /include/linux/cpuidle.h | |
| parent | 8919d779f1fd1ea8b06a46249f1a13c835b736af (diff) | |
| download | lwn-64bdff698092aa6be28c3b248f887022eec77902.tar.gz lwn-64bdff698092aa6be28c3b248f887022eec77902.zip | |
PM: cpuidle/suspend: Add s2idle usage and time state attributes
Add a new attribute group called "s2idle" under the sysfs directory
of each cpuidle state that supports the ->enter_s2idle callback
and put two new attributes, "usage" and "time", into that group to
represent the number of times the given state was requested for
suspend-to-idle and the total time spent in suspend-to-idle after
requesting that state, respectively.
That will allow diagnostic information related to suspend-to-idle
to be collected without enabling advanced debug features and
analyzing dmesg output.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle.h')
| -rw-r--r-- | include/linux/cpuidle.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 0b3fc229086c..a806e94c482f 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -33,6 +33,10 @@ struct cpuidle_state_usage { unsigned long long disable; unsigned long long usage; unsigned long long time; /* in US */ +#ifdef CONFIG_SUSPEND + unsigned long long s2idle_usage; + unsigned long long s2idle_time; /* in US */ +#endif }; struct cpuidle_state { |