Re: [PATCH] RFC x86_64 more accurate KSTK_ESP implementation

[Ingo Molnar]

* Stefani Seibold <stefani@xxxxxxxxxxx> wrote:

> > I'd suggest a competely different method: why dont you use an IPI to 
> > sample the SP whenever someone wants to read it from /proc and we 
> > see that the task is running on a CPU right now?
> 
> Sounds like a challenge, i like the idea. I will have a look on it...

It's not a fastpath, so smp_function_call() ought to do the trick.

	Ingo
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