Mario Limonciello b52124a78a
PM: Add sysfs files to represent time spent in hardware sleep state ...
Userspace can't easily discover how much of a sleep cycle was spent in a
hardware sleep state without using kernel tracing and vendor specific sysfs
or debugfs files.
To make this information more discoverable, introduce 3 new sysfs files:
1) The time spent in a hw sleep state for last cycle.
2) The time spent in a hw sleep state since the kernel booted
3) The maximum time that the hardware can report for a sleep cycle.
All of these files will be present only if the system supports s2idle.
Reviewed-by: Hans de Goede <hdegoede@redhat.com >
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com >
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com >
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b52124a78a