lkml.org 
[lkml]   [2007]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: Linux 2.6.21-rc1
    From
    Date
    On Wed, 2007-02-21 at 18:07 +0100, Thomas Gleixner wrote:
    > On Wed, 2007-02-21 at 08:24 -0800, Daniel Walker wrote:
    > > > The most interesting core change may be the dyntick/nohz one, where timer
    > > > ticks will only happen when needed. It's been brewing for a _loong_ time,
    > > > but it's in the standard kernel now as an option.
    > >
    > > On i386 I get the following,
    > >
    > > TCP cubic registered
    > > NET: Registered protocol family 1
    > > NET: Registered protocol family 17
    > > Testing NMI watchdog ... CPU#0: NMI appears to be stuck (24->24)!
    > > CPU#1: NMI appears to be stuck (0->0)!
    > > CPU#2: NMI appears to be stuck (0->0)!
    > > CPU#3: NMI appears to be stuck (0->0)!
    > >
    > > when I add nmi_watchdog=1 to my boot args which worked on prior kernels.
    > > On closer inspection it looks like arch/i386/kernel/io_apic.c :
    > > check_timer() --> timer_irq_works() depends on IRQ0 incrementing jiffies
    > > which is no longer the case AFAIK.
    >
    > At this point the PIT / HPET _is_ active and incrementing jiffies. The
    > switch to local apic timers happens afterwards.

    Could be the switch over then which confuses the NMI .

    > > I'm not sure exactly how that relates to the NMI, but the check_timer()
    > > function disabled the NMI through the io-apic if it can't get the
    > > "timer" working through the io-apic.
    >
    > Boot log please.
    >
    > tglx
    >

    .config is in there too .

    ftp://source.mvista.com/pub/dwalker/tglx/

    -
    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: 2007-02-21 18:23    [W:0.032 / U:93.000 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site