Re: current linux-2.6.git: cpusets completely broken

From: Linus Torvalds
Date: Sat Jul 12 2008 - 19:05:28 EST




On Sun, 13 Jul 2008, Vegard Nossum wrote:
>
> (A little pet horse for the occasion: Testing can show the presence of
> errors, but not their absence. But that's a different story.)

Absolutely. Which is actually why I prefer my patch. I think it fixes - in
general - the issue of CPU migration migrating tasks back to the CPU that
we're taking down.

The other patches seem to work around just the problem that _triggers_ the
bug. They don't actually make it impossible to migrate to a CPU that is
getting shut down - they just try to avoid the particular sequence that
made it happen for you.

Linus
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