Re: [GIT PULL] scheduler changes for v3.10
From: Stanislaw Gruszka
Date: Tue Apr 30 2013 - 11:34:18 EST
On Tue, Apr 30, 2013 at 07:49:43AM -0700, Linus Torvalds wrote:
> On Mon, Apr 29, 2013 at 11:58 PM, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
> > Please pull the latest sched-core-for-linus git tree from:
> > The main changes in this development cycle were:
> > - full dynticks preparatory work by Frederic Weisbecker
> Why does this have the crappy cputime scaling overflow code, when we
> had a long thread about how to do it right *without* any 64-bit
> divides, including a quality-tested patch?
> This still has the garbage "div64_u64_rem()" crap which actually SLOWS
> DOWN 32-bit code even when not used (becuse it makes "div64_u64()"
> calculate it even when unnecessary.
> WTF happened here? I and others spent efforts so that we wouldn't need
> this kind of crap.
I'm sorry, I was on vacations and has some other work to do, so I didn't
send patches in timely manner. I just posted them today.
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