Re: Add prefetch switch stack hook in scheduler function

[Nick Piggin]

Ingo Molnar wrote:
> * Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
>
>
> > > No, they can be up to 30K apart.  See include/asm-ia64/ptrace.h.
> > > thread_info is at ~0xda0, depending on the config.  The switch_stack
> > > can be as high as 0x7bd0 in the kernel stack, depending on why the task
> > > is sleeping.
> >
> > Just a minor point, I agree with David: I'd like it to be called 
> > prefetch_task(), because some architecture may want to prefetch other 
> > memory.
>
>
> such as?

Not sure. thread_info? Maybe next->timestamp or some other fields
in next, something in next->mm?

I didn't really have a concrete example, but in the interests of
being future proof...

--
SUSE Labs, Novell Inc.

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