lkml.org 
[lkml]   [2013]   [Mar]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 0/4] Add support for S3 non-stop TSC support.
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





\
 
 \ /
  Last update: 2013-03-13 21:02    [W:0.113 / U:2.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site