Re: Add prefetch switch stack hook in scheduler function

Nick Piggin
2005-07-28T08:48:38Z

Ingo Molnar wrote:
> * Nick Piggin <nickpiggin@yahoo.com.au> 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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