linux-kernel - Re: [PATCH v4] perf jevents: Parse metrics during conversion

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Message-ID: <Y5DRjecE88KFc4He@kernel.org>
Date:   Wed, 7 Dec 2022 14:46:53 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     John Garry <john.g.garry@...cle.com>
Cc:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v4] perf jevents: Parse metrics during conversion

Em Wed, Dec 07, 2022 at 05:42:52PM +0000, John Garry escreveu:
> On 07/12/2022 17:40, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Dec 06, 2022 at 09:59:08PM -0800, Ian Rogers escreveu:
> > > Currently the 'MetricExpr' json value is passed from the json
> > > file to the pmu-events.c. This change introduces an expression
> > > tree that is parsed into. The parsing is done largely by using
> > > operator overloading and python's 'eval' function. Two advantages
> > > in doing this are:
> > John, what tag can I get from you? 😄
> > 
> > - Arnaldo
> Sure,
> Reviewed-by: John Garry <john.g.garry@...cle.com>

Thanks a lot!

- Arnaldo