Re: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00

From: Ingo Molnar
Date: Sat Jun 11 2005 - 03:55:56 EST



* Ingo Molnar <mingo@xxxxxxx> wrote:

> > The attached patch fixes seems to fix it for me. It is against
> > V0.7.48-05.
>
> thanks, applied - but this does not end all of the reschedule problems
> that the latest patches have. More on that later.

one problem was that the WORK_MASK definitions in thread_info.h were not
updated - neither the word-sized tests in entry.S. This meant we missed
delayed-preemption on return-from-kernel. But we've got one free bit in
the first by - bit 6, so i moved the DELAYED bit there. Another bug was
that the idle thread did not check for delayed preemption. I fixed these
in the -48-07 patch.

Ingo
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