Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sun, 8 Nov 2009 13:55:27 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] RFC x86_64 more accurate KSTK_ESP implementation |
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* Stefani Seibold <stefani@seibold.net> 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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