linux-kernel - Re: [PATCHv3 0/4] perf tools: Add support for user defined metric

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Date:   Tue, 25 Jan 2022 12:34:19 +0000
From:   John Garry <john.garry@...wei.com>
To:     Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
CC:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Joe Mario <jmario@...hat.com>, Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        "liuqi (BA)" <liuqi115@...wei.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Zhangshaokun <zhangshaokun@...ilicon.com>,
        "irogers@...gle.com" <irogers@...gle.com>
Subject: Re: [PATCHv3 0/4] perf tools: Add support for user defined metric

On 11/05/2020 21:53, Jiri Olsa wrote:

+

Hi jirka,

Did you a plan to continue to work? I don't think that this support was 
ever merged.

We have a requirement to be able to tune parameters of metrics, and 
support here seems suitable.

Thanks,
John

> hi,
> Joe asked for possibility to add user defined metrics. Given that
> we already have metrics support, I added --metrics-file option that
> allows to specify custom metrics.
> 
>    $ cat metrics
>    # IPC
>    mine1 = instructions / cycles;
>    /* DECODED_ICACHE_UOPS% */
>    mine2 = 100 * (idq.dsb_uops / \ (idq.ms_uops + idq.mite_uops + idq.dsb_uops + lsd.uops));
> 
>    $ sudo perf stat --metrics-file ./metrics -M mine1,mine2 --metric-only -a -I 1000
>    #           time       insn per cycle                mine1                mine2
>         1.000536263                0.71                   0.7                 41.4
>         2.002069025                0.31                   0.3                 14.1
>         3.003427684                0.27                   0.3                 14.8
>         4.004807132                0.25                   0.2                 12.1
>    ...
> 
> v3 changes:
>    - added doc for metrics file in perf stat man page
>    - reporting error line number now
>    - changed '#' style comment to C way with '//'
> 
> v2 changes:
>    - add new --metrics-file option
>    - rebased on current perf/core expression bison/flex enhancements
> 
> Also available in:
>    git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>    perf/metric
> 
> thanks,
> jirka
> 
> 
> ---
> Jiri Olsa (4):
>        perf expr: Add parsing support for multiple expressions
>        perf expr: Allow comments in custom metric file
>        perf stat: Add --metrics-file option
>        perf expr: Report line number with error
> 
>   tools/perf/Documentation/perf-stat.txt | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>   tools/perf/builtin-stat.c              |  7 +++++--
>   tools/perf/tests/expr.c                | 18 ++++++++++++++++++
>   tools/perf/util/expr.c                 |  6 ++++++
>   tools/perf/util/expr.h                 | 21 +++++++++++++++++++--
>   tools/perf/util/expr.l                 | 34 ++++++++++++++++++++++++++++++++++
>   tools/perf/util/expr.y                 | 21 +++++++++++++++++----
>   tools/perf/util/metricgroup.c          | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
>   tools/perf/util/metricgroup.h          |  3 ++-
>   tools/perf/util/stat.h                 |  1 +
>   10 files changed, 242 insertions(+), 16 deletions(-)
> 
> .
>