Re: [PATCH] SN2 user-MMIO CPU migration

Brent Casavant
2006-01-20T16:14:21Z

On Fri, 20 Jan 2006, Ingo Molnar wrote:

> hm, why isnt the synchronization done in switch_to()? Your arch-level
> switch_to() could have something like thread->last_cpu_sync, and if
> thread->last_cpu_sync != this_cpu, do the flush. This would not only
> keep this stuff out of the generic scheduler, but it would also optimize
> things a bit more: the moment we do a set_task_cpu() it does not mean
> that CPU _will_ run the task. Another CPU could grab that task later on.

Very good points all around. I'll rework the changes in just the
manner you mentioned.

Brent

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Brent Casavant All music is folk music. I ain't
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