tree e4bb5eeaa252ede053abc6b3c4d15c4127ce7a32
parent 8e19608e8b5c001e4a66ce482edc474f05fb7355
author Magnus Damm <damm@igel.co.jp> 1240341842 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1240346507 -0700

clocksource: add enable() and disable() callbacks

Add enable() and disable() callbacks for clocksources.

This allows us to put unused clocksources in power save mode.  The
functions clocksource_enable() and clocksource_disable() wrap the
callbacks and are inserted in the timekeeping code to enable before use
and disable after switching to a new clocksource.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>