Kernel threads inherit CPU affinity from random sibling
rysto32 at gmail.com
Sat Jan 28 04:45:45 UTC 2012
On Fri, Jan 27, 2012 at 10:41 PM, Attilio Rao <attilio at freebsd.org> wrote:
> I think what you found out is very sensitive.
> However, the patch is not correct as you cannot call
> cpuset_setthread() with thread_lock held.
Whoops! I actually discovered that for myself and had already fixed
it, but apparently I included an old version of the patch in the
> Hence this is my fix:
Oh, I do like this better. I tried something similar myself but
abandoned it because I misread how sched_affinity() was implemented by
4BSD(I had gotten the impression that once TSF_AFFINITY is set it
could never be cleared).
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