linux-kernel - Re: [PATCH v2 05/11] perf expr: increase max other

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Message-ID: <20200423112915.GH1136647@krava>
Date:   Thu, 23 Apr 2020 13:29:15 +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,
        linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v2 05/11] perf expr: increase max other

On Wed, Apr 22, 2020 at 03:04:24PM -0700, Ian Rogers wrote:
> Large metrics such as Branch_Misprediction_Cost_SMT on x86 broadwell
> need more space.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/util/expr.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
> index 0938ad166ece..4938bfc608b7 100644
> --- a/tools/perf/util/expr.h
> +++ b/tools/perf/util/expr.h
> @@ -2,7 +2,7 @@
>  #ifndef PARSE_CTX_H
>  #define PARSE_CTX_H 1
>  
> -#define EXPR_MAX_OTHER 20
> +#define EXPR_MAX_OTHER 64
>  #define MAX_PARSE_ID EXPR_MAX_OTHER
>  
>  struct expr_parse_id {
> -- 
> 2.26.2.303.gf8c07b1a785-goog
> 

ok, and we should probably start to think about what Andi suggested
in here: https://lore.kernel.org/lkml/20200224210308.GQ160988@tassilo.jf.intel.com/

jirka