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Groups > linux.kernel > #1554861

Support Intel uncore event lists v4

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This adds uncore support on top of the recently merged JSON event list
infrastructure for core events. Uncore is everything outside the core,
including memory controllers, PCI, interconnect etc.

Uncore is more complicated to handle than core events because it uses
many duplicated PMUs, which leads to long event lists and verbose duplicated
outputs. 

In fact previously it was nearly unusable for many cases without special 
tools to generate event list and aggregate data (such as 
https://github.com/andikleen/pmu-tools/tree/master/ucevent)

With this patchkit we add:
- Basic support for uncore events in JSON events
- Support aliases that get duplicated over many PMUs transparently
- Support summing up duplicated PMUs per socket
- Support extending the perf stat builtin metrics with simple expressions
specified in the event list.

So far mainly servers are supported. Also this is not using full event lists
(which are full of very obscure events) but only for a smaller subset of
curated useful and understandable metrics.

The actual event lists are not posted, but available at
git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc perf/intel-uncore-json-files-3

The code is available here
git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc perf/builtin-json-22

v1: Initial post
v2: Address review feedback. See changelog in commits.
v3: Repost. Rebase to latest tree.
v4: Rebase. Change DividedBy to generic simple expression parser.
Fix refactoring problem that broke git bisect.
Address review feedback.

-Andi

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Support Intel uncore event lists v4 Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 10/11] perf, tools: Support MetricExpr header in JSON event list Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 07/11] perf, tools: Collapse identically named events in perf stat Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 01/11] perf, tools: Factor out scale conversion code Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 09/11] perf, tools: Add a simple expression parser for JSON Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 02/11] perf, tools: Parse eventcode as number in jevents Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 05/11] perf, tools: Support event aliases for non cpu// pmus Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 03/11] perf, tools: Add support for parsing uncore json files Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 08/11] perf, tools: Expand PMU events by prefix match Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  [PATCH 11/11] perf, tools, stat: Output JSON MetricExpr metric Andi Kleen <andi@firstfloor.org> - 2017-01-10 02:40 +0100
  Re: Support Intel uncore event lists v4 Jiri Olsa <jolsa@redhat.com> - 2017-01-11 20:00 +0100
    Re: Support Intel uncore event lists v4 Andi Kleen <andi@firstfloor.org> - 2017-01-11 21:00 +0100
      Re: Support Intel uncore event lists v4 Jiri Olsa <jolsa@redhat.com> - 2017-01-11 22:50 +0100
        Re: Support Intel uncore event lists v4 Andi Kleen <andi@firstfloor.org> - 2017-01-11 23:00 +0100
          Re: Support Intel uncore event lists v4 Jiri Olsa <jolsa@redhat.com> - 2017-01-12 13:20 +0100
            Re: Support Intel uncore event lists v4 Andi Kleen <andi@firstfloor.org> - 2017-01-12 18:20 +0100

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