On Sun, 20 Jul 2014, Davidlohr Bueso wrote: > 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.
That's best suited for the tool consuming the log in user space. The same is done with IRQ events already. Nicolas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
