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 19:52 +0300, Avi Kivity wrote:
> On 09/22/2009 07:50 PM, Peter Zijlstra wrote:
> >> 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...
> >
>
> If you're using lockdep, surely that's not your biggest worry?

No, but that's all under #ifdef and fully disappears when not enabled.
Generic return-tu-user notifiers don't sound like they will though.



\
 
 \ /
  Last update: 2009-09-22 18:59    [W:0.069 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site