tree 3fad66282da16a806139ce46bad2b85175fae43a
parent 95b38b3f453c16de0f8cddcde3e71050bbfb37b9
author Dominik Brodowski <linux@dominikbrodowski.net> 1151192220 -0400
committer Len Brown <len.brown@intel.com> 1151478871 -0400

ACPI: C-States: accounting of sleep states

Track the actual time spent in C-States (C2 upwards, we can't determine this
for C1), not only the number of invocations.  This is especially useful for
dynamic ticks / "tickless systems", but is also of interest on normal systems,
as any interrupt activity leads to C-States being exited, not only the timer
interrupt.

The time is being measured in PM timer ticks, so an increase by one equals 279
nanoseconds.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>