On Fri, Nov 07, 2014 at 04:25:25PM +0000, Mark Rutland wrote: > In systems with heterogeneous CPUs (e.g. big.LITTLE) the associated PMUs > also differ in terms of the supported set of events, the precise > behaviour of each of those events, and the number of event counters. > Thus it is not possible to expose these PMUs as a single logical PMU. > > Instead a logical PMU is created per CPU microarchitecture, which events > can target directly: > > $ perf stat \ > -e armv7_cortex_a7/config=0x11/ \ > -e armv7_cortex_a15/config=0x11/ \ > ./test > > Performance counter stats for './test': > > 7980455 armv7_cortex_a7/config=0x11/ > [27.29%] > 9947934 armv7_cortex_a15/config=0x11/ > [72.66%] > > 0.016734833 seconds time elapsed > > This series is based atop of my recent preparatory rework [1,2].
Modulo the patches I commented on, the ARM perf bits look fine to me. For those: Acked-by: Will Deacon <[email protected]> However, you need to get the event_filter_match change into the core code before I can queue anything. Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
