linux-kernel - Re: [PATCH v3 06/10] perf list: Simplify cache event printing

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Message-ID: <Y3OVFZU8J2iCXAre@kernel.org>
Date:   Tue, 15 Nov 2022 10:33:09 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>,
        Kang Minchul <tegongkang@...il.com>
Cc:     Weilin Wang <weilin.wang@...el.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Leo Yan <leo.yan@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.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>,
        Sandipan Das <sandipan.das@....com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Xin Gao <gaoxin@...rlc.com>, Rob Herring <robh@...nel.org>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v3 06/10] perf list: Simplify cache event printing

Em Mon, Nov 14, 2022 at 01:07:19PM -0800, Ian Rogers escreveu:
> The current code computes an array of cache names then sorts and
> prints them. Use a strlist to create a list of names that is
> sorted. Keep the hybrid names, it is unclear how to generalize it, but
> drop the computation of evt_pmus that is never used.

> +++ b/tools/perf/util/print-events.c
> @@ -206,137 +206,59 @@ void print_sdt_events(const char *subsys_glob, const char *event_glob,
>  
>  int print_hwcache_events(const char *event_glob, bool name_only)
>  {
> -
> -				if ((hybrid_supported == 0) ||
> -				    (hybrid_supported == npmus)) {
> -					evt_list[evt_i] = strdup(name);
> -					if (npmus > 0) {
> -						for (j = 0; j < npmus; j++)
> -							zfree(&evt_pmus[j]);
> -					}

Fixed up clash with cf9f67b36303de65 ("perf print-events: Remove redundant comparison with zero").

- Arnaldo