linux-kernel - Re: [PATCH v2 07/12] perf vendor events intel: Update icelake to 1.19

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Date:   Fri, 23 Jun 2023 09:08:17 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Vince Weaver <vincent.weaver@...ne.edu>
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>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        John Garry <john.g.garry@...cle.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Eduard Zingerman <eddyz87@...il.com>,
        Jing Zhang <renyu.zj@...ux.alibaba.com>,
        Sohom Datta <sohomdatta1@...il.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Perry Taylor <perry.taylor@...el.com>,
        Samantha Alt <samantha.alt@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Weilin Wang <weilin.wang@...el.com>,
        Edward Baker <edward.baker@...el.com>
Subject: Re: [PATCH v2 07/12] perf vendor events intel: Update icelake to 1.19

On Fri, Jun 23, 2023 at 9:04 AM Vince Weaver <vincent.weaver@...ne.edu> wrote:
>
> On Fri, 23 Jun 2023, Ian Rogers wrote:
>
> > Updates were released in:
> > https://github.com/intel/perfmon/commit/f3d841189f8964bc240c86301f4c849845630b5b
> > A number of events are deprecated and event descriptions updated. Adds
> > events ICACHE_DATA.STALLS, ICACHE_TAG.STALLS and DECODE.LCP.
>
> why are the events marked as deprecated rather than just being removed?

My guess would be so that people who used the deprecated event name
don't suddenly get failures. The deprecated flag means that the events
no longer show in "perf list" unless --deprecated is specified.

Thanks,
Ian

> Vince Weaver
> vincent.weaver@...ne.edu