lkml.org 
[lkml]   [2011]   [May]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [block IO crash] Re: 2.6.39-rc5-git2 boot crashs
    On Wed, 4 May 2011, Christoph Lameter wrote:
    > Subject: slub: Remove CONFIG_CMPXCHG_LOCAL ifdeffery
    >
    > Remove the #ifdefs. This means that the irqsafe_cpu_cmpxchg_double() is used
    > everywhere.
    >
    > There may be performance implications since:
    >
    > A. We now have to manage a transaction ID for all arches
    >
    > B. The interrupt holdoff for arches not supporting CONFIG_CMPXCHG_LOCAL is reduced
    > to a very short irqoff section.
    >
    > There are no multiple irqoff/irqon sequences as a result of this change. Even in the fallback
    > case we only have to do one disable and enable like before.
    >
    > Signed-off-by: Christoph Lameter <cl@linux.com>

    This doesn't apply cleanly on top of slab/next which has some of your
    cleanup patches applied. There's some CONFIG_PREEMPT conflicts so I'd
    rather you rediffed it yourself.

    Pekka


    \
     
     \ /
      Last update: 2011-05-04 17:45    [W:0.046 / U:31.792 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site