Messages in this thread | | | Date | Sun, 08 Nov 2009 08:34:43 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] RFC x86_64 more accurate KSTK_ESP implementation |
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On 11/08/2009 06:00 AM, Stefani Seibold wrote: > Am Sonntag, den 08.11.2009, 13:55 +0100 schrieb Ingo Molnar: >> * 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. > > There is no function smp_function_call()... >
smp_call_function().
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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