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clocksource: Add new feature flag CLOCK_SOURCE_SUSPEND_NONSTOP

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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.

CRs-fixed: 536881
Change-Id: I863678fec5a3021158240f2c5b144c552ba0b16a
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Git-commit: 5caf463625
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Feng Tang 2013-03-12 11:56:46 +08:00 committed by Artem Borisov
parent 0cf6cbf5c2
commit 21278d1f24
1 changed files with 1 additions and 0 deletions
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include/linux/clocksource.h
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@ -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)