linux-kernel - Re: [PATCH v3 00/12] perf metric fixes and test

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Date:   Fri, 1 May 2020 12:35:19 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Haiyan Song <haiyanx.song@...el.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Song Liu <songliubraving@...com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>,
        Leo Yan <leo.yan@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Paul Clarke <pc@...ibm.com>, linux-kernel@...r.kernel.org,
        kajoljain <kjain@...ux.ibm.com>,
        linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v3 00/12] perf metric fixes and test

On Thu, Apr 30, 2020 at 12:51:32AM -0700, Ian Rogers wrote:
> Add a test that all perf metrics (for your architecture) are parsable
> with the simple expression parser. Attempt to parse all events in
> metrics but only fail if the metric is for the current CPU. Fix bugs
> in the expr parser, x86 and powerpc metrics. Improve debug messages
> around add PMU config term failures.
> 
> v3 adds parse event testing of ids and improves debug messages for add
>   PMU. These messages are paticular visible with 'perf test 10
>   -vvv'. It moves the testing logic from tests/expr.c to
>   tests/pmu-events.c as suggested by John Garry
>   <john.garry@...wei.com>.  
> v2 adds Fixes tags to commit messages for when broken metrics were
>   first added. Adds a debug warning for division by zero in expr, and
>   adds a workaround for id values in the expr test necessary for
>   powerpc. It also fixes broken power8 and power9 metrics.
> 
> Ian Rogers (12):
>   perf expr: unlimited escaped characters in a symbol
>   perf metrics: fix parse errors in cascade lake metrics
>   perf metrics: fix parse errors in skylake metrics
>   perf expr: allow ',' to be an other token
>   perf expr: increase max other
>   perf expr: parse numbers as doubles
>   perf expr: debug lex if debugging yacc
>   perf metrics: fix parse errors in power8 metrics
>   perf metrics: fix parse errors in power9 metrics
>   perf expr: print a debug message for division by zero
>   perf parse-events: expand add PMU error/verbose messages
>   perf test: improve pmu event metric testing

this does not apply on top of changes from Kajol Jain
which are now in Arnaldo's perf/core.. could you please
rebase?

thanks,
jirka