Messages in this thread | | | Date | Wed, 13 Mar 2013 12:17:25 -0700 | From | John Stultz <> | Subject | Re: [PATCH v4 0/4] Add support for S3 non-stop TSC support. |
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On 03/11/2013 08:56 PM, Feng Tang wrote: > Hi All, > > On some new Intel Atom processors (Penwell and Cloverview), there is > a feature that the TSC won't stop in S3, say the TSC value won't be > reset to 0 after resume. This feature makes TSC a more reliable > clocksource and could benefit the timekeeping code during system > suspend/resume cycles. > > The enabling efforts include adding new flags for this feature, > modifying clocksource.h and timekeeping.c to support and utilizing > it. > > The major change to timekeeping is the way to count suspended time, > current way is trying to use the persistent clock first, and then > try the rtc if persistent clock can't do it. This patch will change > the trying order to: > suspend-nonstop clocksource -> persistent clock -> rtc > > Please help to review them, thanks a lot! >
Thanks!
I've gone ahead and queued these, with my minor modifications, for 3.10 (pending further testing).
thanks -john
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