[PATCH V15 00/19] perf, tools: Add support for PMU events in JSON format
sukadev at linux.vnet.ibm.com
Wed Aug 12 06:07:24 AEST 2015
Sukadev Bhattiprolu [sukadev at linux.vnet.ibm.com] wrote:
| CPUs support a large number of performance monitoring events (PMU events)
| and often these events are very specific to an architecture/model of the
| CPU. To use most of these PMU events with perf, we currently have to identify
| them by their raw codes:
| perf stat -e r100f2 sleep 1
| This patchset allows architectures to specify these PMU events in JSON
| files located in 'tools/perf/pmu-events/arch/' of the mainline tree.
| The events from the JSON files for the architecture are then built into
| the perf binary.
| At run time, perf identifies the specific set of events for the CPU and
| creates "event aliases". These aliases allow users to specify events by
| "name" as:
| perf stat -e pm_1plus_ppc_cmpl sleep 1
| The file, 'tools/perf/pmu-events/README' in [PATCH 19/19] gives more
| - All known events tables for the architecture are included in the
| perf binary.
| - For architectures that don't have any JSON files, an empty mapping
| table is created and they should continue to build)
| Thanks to input from Andi Kleen, Jiri Olsa, Namhyung Kim and Ingo Molnar.
| These patches are available from:
| Branch Description
| json-v15 Source Code only
| json-files-5 x86 and Powerpc datafiles only
| json-v15-with-data Both code and data (build/test)
| NOTE: Only "source code" patches (i.e those in json-v15) are being emailed.
| Please pull the "data files" from the json-files-5 branch.
Any updates on this patchset? They have been reviewed/acked by Jiri
and we have not received any comments since then.
Is there a chance this can make it into 4.3?
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