lkml.org 
[lkml]   [2008]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
DateSat, 8 Nov 2008 10:28:21 -0800 (PST)
FromLinus Torvalds <>
SubjectRe: [git pull] scheduler updates


On Sat, 8 Nov 2008, Ingo Molnar wrote:
>
> Ingo Molnar (2):
> sched: improve sched_clock() performance
> sched: optimize sched_clock() a bit

Btw, why do we do that _idiotic_ rdtsc_barrier() AT ALL?

No sane user can possibly want it. If you do 'rdtsc', there's nothing you
can do about a few cycles difference due to OoO _anyway_. Adding barriers
is entirely meaningless - it's not going to make the return value mean
anything else.

Can we please just remove that idiocy? Or can somebody give a _sane_
argument for it?

Linus


\
 
 \ /
  Last update: 2008-11-08 19:33    [from the cache]
©2003-2010