Re: Scheduling instructions from userspace.

Alan Cox (alan@lxorguk.ukuu.org.uk)
Wed, 22 Sep 1999 16:28:11 +0100 (BST)


> Is it possible to force an assembly instruction to execute
> on a specific CPU in a userspace app ?

No

> If not, I guess it'll have to be done using an insertable kernel
> module with a routine such as..
>
> for number_of_CPUs {
> scheduling magic to switch to desired CPU
> instruction
> }
>
> Any pointers on how to write the scheduling part ?

Have a look at arch/i386/kernel/mtrr.c - thats about as hairy as it gets
where you need to change the setup on all CPU's at the same time

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