Re: [PATCH 2/3] work_on_cpu: Use our own workqueue.

[Rusty Russell]

On Thursday 05 February 2009 08:18:23 Andrew Morton wrote:
> I expect that the same argument applies to most of the set_cpus_allowed()
> callsites - they're run by root-only code.  Sure, root can (with
> careful timing) move root's own thread onto the wrong CPU in the middle
> of microcode loading.  In which case root gets to own both pieces.

Sorry, I don't accept this at all.  It's completely reasonable for me to write a tool which clears all tasks off a cpu.  We wrote an API to do it, now we're going to say don't use it?

Yes, it's a pain to fix.  Yes, we should never have been doing it this way in the first place.  But let's not blame the users.

Rusty.
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