Re: [git pull] scheduler updates

[Linus Torvalds]

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/