[lkml]   [1999]   [Nov]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: spin_unlock optimization(i386)

    Manfred Spraul <> wrote:

    > * you (speculatively) execute read instructions ahead of write
    > instructions.
    > * you do not send write instructions immediately out of the CPU core,
    > they sit in a write buffer.

    I'm starting to doubt myself a bit here (reads being hoisted above writes
    with respect to externally observed stores vs. conflicts with the list of
    uncommitted stores as being the trouble here), so I'm going to just check
    on this one with the folks who implemented it here...

    An answer will be forthcoming. Til then, have a good weekend all...

    Erich Boleyn
    PMD IA32 Architecture

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:55    [W:0.018 / U:35.988 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site