lkml.org 
[lkml]   [2000]   [Aug]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [patch] waitqueue optimization, 2.4.0-test7
       Date: Tue, 29 Aug 2000 04:26:18 +0200 (CEST)
    From: Andrea Arcangeli <andrea@suse.de>

    Alpha definitely needs mb(), ld_l/st_c doesn't imply any memory
    barrier (yes, alpha is very aggressive in SMP 8).

    I wonder if it then makes sense to just provide a set of bitops
    interfaces then which enforces the barrier. Or perhaps the other way
    around, make what we have now enforce the barriers and have
    __clear_bit et al. not do the memory barrier part.

    Later,
    David S. Miller
    davem@redhat.com

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

    \
     
     \ /
      Last update: 2005-03-22 12:38    [W:0.030 / U:0.016 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site