lkml.org 
[lkml]   [2009]   [Sep]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [PATCH v2] core, x86: Add user return notifiers
    From
    Date
    On Tue, 2009-09-22 at 16:32 +0200, Ingo Molnar wrote:
    > * Avi Kivity <avi@redhat.com> wrote:
    >
    > > On 09/19/2009 09:40 AM, Avi Kivity wrote:
    > >> Add a general per-cpu notifier that is called whenever the kernel is
    > >> about to return to userspace. The notifier uses a thread_info flag
    > >> and existing checks, so there is no impact on user return or context
    > >> switch fast paths.
    > >>
    > >
    > > Ingo/Peter?
    >
    > Would be nice to convert some existing open-coded return-to-user-space
    > logic to this facility. One such candidate would be lockdep_sys_exit?

    And here I was thinking this was one of the hottest code paths in the
    whole kernel...



    \
     
     \ /
      Last update: 2009-09-22 18:53    [W:2.525 / U:0.252 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site