linux-kernel - Re: [PATCH v3 01/11] perf jevents metric: Correct Function equality

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Date:   Wed, 25 Jan 2023 10:25:17 +0530
From:   kajoljain <kjain@...ux.ibm.com>
To:     Ian Rogers <irogers@...gle.com>,
        John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        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>,
        Kim Phillips <kim.phillips@....com>,
        Florian Fischer <florian.fischer@...q.space>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
        Rob Herring <robh@...nel.org>,
        Kang Minchul <tegongkang@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sandipan Das <sandipan.das@....com>,
        Jing Zhang <renyu.zj@...ux.alibaba.com>,
        linuxppc-dev@...ts.ozlabs.org
Cc:     Stephane Eranian <eranian@...gle.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>
Subject: Re: [PATCH v3 01/11] perf jevents metric: Correct Function equality



On 1/24/23 12:03, Ian Rogers wrote:
> rhs may not be defined, say for source_count, so add a guard.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/pmu-events/metric.py | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
> index 4797ed4fd817..2f2fd220e843 100644
> --- a/tools/perf/pmu-events/metric.py
> +++ b/tools/perf/pmu-events/metric.py
> @@ -261,8 +261,10 @@ class Function(Expression):
>  
>    def Equals(self, other: Expression) -> bool:
>      if isinstance(other, Function):
> -      return self.fn == other.fn and self.lhs.Equals(
> -          other.lhs) and self.rhs.Equals(other.rhs)
> +      result = self.fn == other.fn and self.lhs.Equals(other.lhs)
> +      if self.rhs:
> +        result = result and self.rhs.Equals(other.rhs)
> +      return result
>      return False
>  
>  

Patch looks good to me.

Reviewed-by: Kajol Jain<kjain@...ux.ibm.com>

Thanks,
Kajol Jain