On 01/22/2014 07:02 AM, Michael Ellerman wrote: > On Thu, 2014-01-16 at 15:53 -0800, Cody P Schafer wrote: >> These patches add basic pmus for 2 powerpc hypervisor interfaces to obtain >> performance counters: gpci ("get performance counter info") and 24x7. >> >> The counters supplied by these interfaces are continually counting and never >> need to be (and cannot be) disabled or enabled. They additionally do not >> generate any interrupts. This makes them in some regards similar to software >> counters, and as a result their implimentation shares some common code (which >> an initial patch exposes) with the sw counters. > > Hi Cody, > > Can you please add some more explanation of this series. > > In particular why do we need two new PMUs, and how do they relate to each > other? > > And can you add an example of how I'd actually use them using perf. >
Yeah, agreed. -- 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/