Support Intel uncore event lists

From	Andi Kleen <andi@firstfloor.org>
Newsgroups	linux.kernel
Subject	Support Intel uncore event lists
Date	2017-01-28 03:10 +0100
Message-ID	<t4qCK-3Iy-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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-25

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.
v5: Address review feedback. See changelog in commits. Add acks.

-Andi

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Support Intel uncore event lists Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 06/10] perf, tools: Collapse identically named events in perf stat Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 01/10] perf, tools: Parse eventcode as number in jevents Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 04/10] perf, tools: Support event aliases for non cpu// pmus Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 02/10] perf, tools: Add support for parsing uncore json files Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 09/10] perf, tools: Support MetricExpr header in JSON event list Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 03/10] perf, tools: Support per pmu json aliases Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:10 +0100
  [PATCH 05/10] perf, tools: Add debug support for outputing alias string Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:20 +0100
  [PATCH 07/10] perf, tools: Expand PMU events by prefix match Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:20 +0100
  [PATCH 10/10] perf, tools, stat: Output JSON MetricExpr metric Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:20 +0100
  [PATCH 08/10] perf, tools: Add a simple expression parser for JSON Andi Kleen <andi@firstfloor.org> - 2017-01-28 03:30 +0100

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