Messages in this thread | | | Subject | Re: [PATCH 4/4] (RFC) X86: add IPI tracepoints | From | Davidlohr Bueso <> | Date | Sun, 20 Jul 2014 13:25:54 -0700 |
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On Fri, 2014-07-18 at 01:18 -0400, Nicolas Pitre wrote: > On X86 there are already tracepoints for IRQ vectors through which IPIs > are handled. However this is highly X86 specific, and the IPI signaling > is not currently traced. > > This is an attempt at adding generic IPI tracepoints to X86.
I welcome this, and fwiw have been trying out this patch. One thing I would like to see, but due to overhead would probably be better suited in userspace (trace-cmd, maybe?), is a more packed description of the IPI. Ie: unifying ipi_init and ipi_exit and show overall cost of the IPI.
Thanks, Davidlohr
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