Re: [PATCH -v2] use per cpu data for single cpu ipi calls

[Peter Zijlstra]

On Thu, 2009-01-29 at 10:39 -0800, Linus Torvalds wrote:

> But you're right, I'm still not seeing anything that looks _likely_ to be 
> a problem. But I worry that it's something somebody may want to do.

Well, the kgdb case I looked at did exactly that, and that is a problem.

As for people wanting to do it, we have __smp_call_function_single() to
do just that, all you have to do is provide your own csd.



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