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Below is a patch from android kernel that maintains a histogram of
suspend times. Please review and provide feedback.
Statistices on the time spent in suspend are kept in
/sys/kernel/debug/sleep_time.
Cc: Android Kernel Team <[email protected]>
Cc: Colin Cross <[email protected]>
Cc: Todd Poynor <[email protected]>
Cc: San Mehat <[email protected]>
Cc: Benoit Goby <[email protected]>
Cc: John Stultz <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Colin Cross <[email protected]>
Signed-off-by: Todd Poynor <[email protected]>
[[email protected]: Re-formatted suspend time table to better
fit expected values. Moved accounting of suspend time into timekeeping
core. Removed CONFIG_SUSPEND_TIME flag and made the feature conditional
on CONFIG_DEBUG_FS. Changed the file name to sleep_time to better fit
terminology in timekeeping core. Changed seq_printf to seq_puts. Tweaked
commit message]
Signed-off-by: Zoran Markovic <[email protected]>
Signed-off-by: John Stultz <[email protected]>
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