lk@tantalophile.demon.co.uk (Jamie Lokier) writes:
> Jun Sun wrote:
> > First of all, I think this is must-fix bug. (Any arguments here?)
>
> There are a few other scenarious where need_resched is missed, including
> the last few instructions after ret_from_syscall. And it really does
> happen there. I think it's a must-fix too, but the fact that neither my
> nor Ingo's patch made it in suggests Linus thinks otherwise.
Looks like the easiest way to fix such races would be to move need_resched
back to a global variable (possible in an array indexed per CPU). Earlier
Linux kernels (<2.0) had it this way, I'm not sure why it was changed.
-Andi
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This archive was generated by hypermail 2b29 : Thu Mar 23 2000 - 21:00:31 EST