Commit 5caf4636 authored Mar 12, 2013 by Feng Tang Committed by John Stultz Mar 15, 2013

clocksource: Add new feature flag CLOCK_SOURCE_SUSPEND_NONSTOP



Some x86 processors have a TSC clocksource, which continues to run
even when system is suspended. Also most OMAP platforms have a
32 KHz timer which has similar capability. Add a feature flag so that
it could be utilized.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>

parent c54fdbb2

include/linux/clocksource.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -206,6 +206,7 @@ struct clocksource {
		#define CLOCK_SOURCE_WATCHDOG 0x10
		#define CLOCK_SOURCE_VALID_FOR_HRES 0x20
		#define CLOCK_SOURCE_UNSTABLE 0x40
		#define CLOCK_SOURCE_SUSPEND_NONSTOP 0x80

		/* simplify initialization of mask field */
		#define CLOCKSOURCE_MASK(bits) (cycle_t)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)