linux-kernel - Re: [PATCH v2] perf expr: Force encapsulation on expr_id

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Date:   Wed, 26 Aug 2020 17:57:33 +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>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Leo Yan <leo.yan@...aro.org>, linux-kernel@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v2] perf expr: Force encapsulation on expr_id_data

On Wed, Aug 26, 2020 at 08:30:55AM -0700, Ian Rogers wrote:
> This patch resolves some undefined behavior where variables in
> expr_id_data were accessed (for debugging) without being defined. To
> better enforce the tagged union behavior, the struct is moved into
> expr.c and accessors provided. Tag values (kinds) are explicitly
> identified.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>

great, thanks for doing this

Acked-by: Jiri Olsa <jolsa@...hat.com>

jirka