[lkml]   [2009]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH -v5][RFC]: mutex: implement adaptive spinning

    * Gregory Haskins <> wrote:

    > Can I ask a simple question in light of all this discussion?
    > "Is get_task_struct() really that bad?"

    it dirties a cacheline and it also involves atomics.

    Also, it's a small design cleanliness issue to me: get_task_struct()
    impacts the lifetime of an object - and if a locking primitive has
    side-effects on object lifetimes that's never nice.


     \ /
      Last update: 2009-01-07 23:39    [W:4.087 / U:0.200 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site