linux-kernel - Re: [PATCH 1/2] perf tools: ARM SPE code cleanup

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Date:   Thu, 2 Jul 2020 16:39:50 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Wei Li <liwei391@...wei.com>
Cc:     Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Kim Phillips <kim.phillips@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH 1/2] perf tools: ARM SPE code cleanup

On Tue, Jun 23, 2020 at 08:31:40PM +0800, Wei Li wrote:
> Remove the useless check code to make it clear.
> 
> Signed-off-by: Wei Li <liwei391@...wei.com>
> ---
>  tools/perf/arch/arm/util/auxtrace.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/perf/arch/arm/util/auxtrace.c b/tools/perf/arch/arm/util/auxtrace.c
> index 0a6e75b8777a..62b7b03d691a 100644
> --- a/tools/perf/arch/arm/util/auxtrace.c
> +++ b/tools/perf/arch/arm/util/auxtrace.c
> @@ -57,7 +57,7 @@ struct auxtrace_record
>  	struct evsel *evsel;
>  	bool found_etm = false;
>  	bool found_spe = false;
> -	static struct perf_pmu **arm_spe_pmus = NULL;
> +	static struct perf_pmu **arm_spe_pmus;
>  	static int nr_spes = 0;
>  	int i = 0;
>  
> @@ -65,9 +65,7 @@ struct auxtrace_record
>  		return NULL;
>  
>  	cs_etm_pmu = perf_pmu__find(CORESIGHT_ETM_PMU_NAME);
> -
> -	if (!arm_spe_pmus)
> -		arm_spe_pmus = find_all_arm_spe_pmus(&nr_spes, err);
> +	arm_spe_pmus = find_all_arm_spe_pmus(&nr_spes, err);

Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>

>  
>  	evlist__for_each_entry(evlist, evsel) {
>  		if (cs_etm_pmu &&
> -- 
> 2.17.1
>