linux-kernel - [PATCH V2 0/6] Freq/CPU%/CORE

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Message-Id: <1437745712-16649-1-git-send-email-kan.liang@intel.com>
Date:	Fri, 24 Jul 2015 09:48:26 -0400
From:	kan.liang@...el.com
To:	a.p.zijlstra@...llo.nl, acme@...nel.org
Cc:	luto@...nel.org, mingo@...hat.com, eranian@...gle.com,
	ak@...ux.intel.com, mark.rutland@....com, adrian.hunter@...el.com,
	jolsa@...nel.org, namhyung@...nel.org,
	linux-kernel@...r.kernel.org, Kan Liang <kan.liang@...el.com>
Subject: [PATCH V2 0/6] Freq/CPU%/CORE_BUSY% support

From: Kan Liang <kan.liang@...el.com>

This patch set supports per-sample freq/CPU%/CORE_BUSY% print in perf
report -D and --stdio.
For printing these information, the perf.data file must have been obtained
by group read and using special events cycles, ref-cycles, msr/tsc/,
msr/aperf/ or msr/mperf/.

 - Freq (MHz): The frequency during the sample interval. Needs cycles
   ref-cycles event.
 - CPU%: CPU utilization during the sample interval. Needs ref-cycles and
   msr/tsc/ events.
 - CORE_BUSY%: actual percent performance (APERF/MPERF%) during the
   sample interval. Needs msr/aperf/ and msr/mperf/ events.

For printing CPU% and CORE_BUSY%, please also apply the kernel patch.
http://marc.info/?l=linux-kernel&m=143747254926369&w=2

Here is an example:

$ perf record -e
'{cycles,ref-cycles,msr/tsc/,msr/mperf/,msr/aperf/}:S' ~/tchain_edit

$ perf report --stdio --group --show-freq-perf

                                 Overhead   FREQ MHz   CPU%  CORE_BUSY%
Command      Shared Object     Symbol
 ........................................  .........  .....  ..........
...........  ................  ......................

    99.54%  99.54%  99.53%  99.53%  99.53%       2301     96         99
tchain_edit  tchain_edit       [.] f3
     0.20%   0.20%   0.20%   0.20%   0.20%       2301     98         99
tchain_edit  tchain_edit       [.] f2
     0.05%   0.05%   0.05%   0.05%   0.05%       2300     98         99
tchain_edit  [kernel.vmlinux]  [k] read_tsc

Changes since V1:
 - Save cpu max freq to header when recording
 - Read cpu max freq and msr type from header when reporting

Kan Liang (6):
  perf,tools: save cpu max freq in perf header
  perf,tools: read cpu max freq and msr type from header
  perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D
  perf,tools: save misc sample read value in struct perf_sample
  perf,tools: caculate and save freq/CPU%/CORE_BUSY% in he_stat
  perf,tools: Show freq/CPU%/CORE_BUSY% in perf report --stdio

 tools/perf/Documentation/perf-report.txt | 12 ++++++
 tools/perf/builtin-annotate.c            |  2 +-
 tools/perf/builtin-diff.c                |  2 +-
 tools/perf/builtin-report.c              | 22 ++++++++++
 tools/perf/perf.h                        |  1 +
 tools/perf/tests/hists_link.c            |  4 +-
 tools/perf/ui/hist.c                     | 71 +++++++++++++++++++++++++++++---
 tools/perf/util/cpumap.c                 | 32 ++++++++++++++
 tools/perf/util/cpumap.h                 |  2 +
 tools/perf/util/event.h                  | 11 +++++
 tools/perf/util/header.c                 | 56 +++++++++++++++++++++++++
 tools/perf/util/header.h                 |  4 ++
 tools/perf/util/hist.c                   | 51 ++++++++++++++++++++---
 tools/perf/util/hist.h                   |  5 +++
 tools/perf/util/session.c                | 49 +++++++++++++++++++---
 tools/perf/util/session.h                | 29 +++++++++++++
 tools/perf/util/sort.c                   |  3 ++
 tools/perf/util/sort.h                   |  3 ++
 tools/perf/util/symbol.h                 |  9 +++-
 tools/perf/util/util.c                   |  2 +
 20 files changed, 349 insertions(+), 21 deletions(-)

-- 
1.8.3.1

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