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    SubjectRe: [PATCH] fix nanosleep() granularity bumps
    george anzinger <george@mvista.com> wrote:
    >
    > > There is currently a mysterious timer lockup happening on power4 machines.
    > > I'd like to keep these changes well-separated in time so we can get an
    > > understanding of what code changes correlate with changed behaviour.
    >
    > Tell me more...

    Don't know much more really. Anton has a machine which fairly repeatably
    locks up at jiffies = 0x100104100.

    > Latest BK. Ive been getting this lockup for a while,
    > It _always_ triggers when jiffies = 0x100104100.
    >
    > c000000000068a14 cascade+0x74
    > c0000000000694a4 run_timer_softirq+0x244
    > c0000000000614f0 do_softirq+0x174
    > c000000000012c10 timer_interrupt+0x1a8
    > c000000000012a0c cpu_idle+0xc0

    This _might_ be the timer-handler-does-add_timer(right now) lockup which was
    fixed in Linus's tree today.
    -
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