lkml.org 
[lkml]   [2011]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] jump_label: jump_label for boot options.
    On Thu, Dec 01, 2011 at 11:53:53AM +0900, KAMEZAWA Hiroyuki wrote:
    > I tried to use jump_label for handling memcg's boot options which sets
    > global variable true/false and never changes after boot. And found jump_table
    > is larger than expected. This patch is a trial to allow to place jump_table
    > in .init section. How do you think ?
    >

    Remeber too, that 'static_branch()' is inherently biased. That is, the
    'false' path is assumed to be the the most likely path. Thus, the 'true'
    path is move out-of-line. Thus, if the 'true' branch is potentially
    used all the time, we would want to make sure that the savings of not
    having to check a variable is still worth it. I should probably rename
    static_branch() -> 'static_branch_default_false()' to make that clear.

    Maybe we need an unbiased static_branch() too, but I'm not sure excatly
    how to implement it...

    Thanks,

    -Jason


    \
     
     \ /
      Last update: 2011-12-01 16:43    [W:4.008 / U:0.856 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site