linux-kernel - Re: [PATCH] perf evlist: Directly return instead of using local ret variable

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Date:   Wed, 30 Mar 2022 17:37:15 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Haowen Bai <baihaowen@...zu.com>
Cc:     peterz@...radead.org, mingo@...hat.com, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        namhyung@...nel.org, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org, kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH] perf evlist: Directly return instead of using local ret
 variable

Em Mon, Mar 28, 2022 at 09:55:32AM +0800, Haowen Bai escreveu:
> fixes coccinelle warning:
> ./tools/perf/util/evlist.c:1333:5-8: Unneeded variable: "err". Return
> "- ENOMEM" on line 1358

Thanks, applied.

- Arnaldo

 
> Signed-off-by: Haowen Bai <baihaowen@...zu.com>
> ---
>  tools/perf/util/evlist.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index 9bb79e0..1883278 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -1330,7 +1330,6 @@ static int evlist__create_syswide_maps(struct evlist *evlist)
>  {
>  	struct perf_cpu_map *cpus;
>  	struct perf_thread_map *threads;
> -	int err = -ENOMEM;
>  
>  	/*
>  	 * Try reading /sys/devices/system/cpu/online to get
> @@ -1355,7 +1354,7 @@ static int evlist__create_syswide_maps(struct evlist *evlist)
>  out_put:
>  	perf_cpu_map__put(cpus);
>  out:
> -	return err;
> +	return -ENOMEM;
>  }
>  
>  int evlist__open(struct evlist *evlist)
> -- 
> 2.7.4

-- 

- Arnaldo