linux-kernel - perf: documentation for cycles_no

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Message-ID: <alpine.DEB.2.20.1712291149040.2237@hadrien>
Date:   Fri, 29 Dec 2017 11:58:42 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: perf: documentation for cycles_no_execute event

Hello,

Many of the x86 pipeline.json files have the brief description "Total
execution stalls" for both CYCLE_ACTIVITY.CYCLES_NO_EXECUTE and
CYCLE_ACTIVITY.STALLS_TOTAL.  Should the case for
CYCLE_ACTIVITY.CYCLES_NO_EXECUTE have a brief description that mentions
cycles?  Some of the files do have a public description that mentions
cycles, eg broadwellde/pipeline.json has "Counts number of cycles nothing
is executed on any execution port.", but others (eg ivytown/pipeline.json)
just have "Total execution stalls." twice.  Maybe "Cycles where nothing is
executed" would be ok for CYCLE_ACTIVITY.CYCLES_NO_EXECUTE?

thanks,
julia