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SubjectRe: changing internal kernel system mechanism in runtime by a module patch

On Nov 16 2006 20:29, Adrian Bunk wrote:
>On Thu, Nov 16, 2006 at 09:19:50PM +0200, Yitzchak Eidus wrote:
>> is it possible to replace linux kernel internal functions such as
>> schdule () to lets say my_schdule () in a run time with a module
>> patch???

Nothing is impossible.

>> (so that every call in the kernel to schdule() will go to my_schdule()... )
>> ???
>>
>> i am talking about a clean/standard way to do such thing

Not clean. Not standard.
And it sounds evil too.

>> (without overwrite the mem address of the function and replace it in a
>> dirty way...)
>
>No.

You would have to patch _every_ callsite. That's too tedious to be
useful.

(Hey there is SMP alternatives which sounds like it did just that -
anyone?)



-`J'
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