[lkml]   [2008]   [Feb]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH [RT] 05/14] rearrange rt_spin_lock sleep

    * Gregory Haskins <> wrote:

    > My assumption is that the xchg() (inside update_current()) acts as an
    > effective wmb(). If xchg() does not have this property, then this
    > code is broken and patch 6/14 should also add a:

    xchg() is a strong implicit memory barrier, it implies smp_mb().
    (historic sidenote: it was the very first SMP primitive we had in


     \ /
      Last update: 2008-02-22 14:39    [W:0.063 / U:10.668 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site