lkml.org 
[lkml]   [2006]   [Jun]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [2.6.17-rc5-mm2] crash when doing second suspend: BUG in arch/i386/kernel/nmi.c:174
    > > So my question is/was what is the proper way to handle processor level
    > > subsystems during the suspend/resume path on an SMP system. I really
    > > don't understand the hotplug path nor the suspend/resume path very well.
    >
    > Make it work properly for CPU hotplug for individual CPU and then in suspend
    > you take care of "global" state and the last CPU.

    So the assumption is treat all the cpus the same either all on or all off,
    no mixed mode (some cpus on, some cpus off). I guess I was trying to hard
    to work on the per-cpu level.
    >
    > > I didn't want to register a hotplug handler because a hotplug event is
    > > really different than a suspend event (I want to _save_ info during a
    > > suspend event). The documentation I was reading seemed to suggest that
    > > hotplug/suspend/smp was a work-in-progress.
    >
    > You need to disable the nmi watchdog on CPU hotunplug too,
    > it's no good to keep the NMI running.

    Don't you want to make sure those CPUs are actually sleeping. :^D

    -Don
    >
    >
    > -Andi
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-06-07 01:54    [W:2.912 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site