Messages in this thread | | | Date | Sat, 8 Nov 2008 10:28:21 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [git pull] scheduler updates |
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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
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