[lkml]   [2008]   [Mar]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [linux-pm] [PATCH] cpuidle: avoid singing capacitors
    On Tue, 4 Mar 2008 18:29:18 +0100
    Andi Kleen <> wrote:

    > > So for now, I'm back to thinking that measuring the interval between deep sleeps is the better approach. I could use some ideas for a good clock source though. I haven't dug much deeper than jiffies when it comes to kernel timekeeping.
    > jiffies should work, you just need to make sure you measure them at the
    > right place. In particular there is some code in dyntick that catches
    > up on jiffies after the deep sleep when the normal timer handler didn't run
    > and jiffies are only usable again after that code executed.

    And how can I tell if this handler has run? Not that it really matters I guess, as I don't think running it from the cpuidle governor is very sane.

    -- Pierre Ossman

    Linux kernel, MMC maintainer
    PulseAudio, core developer
    rdesktop, core developer

     \ /
      Last update: 2008-03-04 18:35    [W:0.027 / U:5.976 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site