linux-kernel - Re: [PATCH -next] perf script: remove unneeded conversion to bool

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Message-ID: <93994350620b4809e515c295c55ed23aceb9c3a0.camel@perches.com>
Date:   Sun, 26 Apr 2020 13:59:36 -0700
From:   Joe Perches <joe@...ches.com>
To:     Zou Wei <zou_wei@...wei.com>, peterz@...radead.org,
        mingo@...hat.com, acme@...nel.org, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] perf script: remove unneeded conversion to bool

On Sun, 2020-04-26 at 20:31 +0800, Zou Wei wrote:
> This issue was detected by using the Coccinelle software:
> 
> tools/perf/builtin-script.c:3285:48-53: WARNING: conversion to bool not needed here
> tools/perf/builtin-script.c:2839:36-41: WARNING: conversion to bool not needed here
> 
> The conversion to bool is unneeded, remove it
[]
> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
[]
> @@ -2836,7 +2836,7 @@ static int parse_output_fields(const struct option *opt __maybe_unused,
>  				break;
>  		}
>  		if (i == imax && strcmp(tok, "flags") == 0) {
> -			print_flags = change == REMOVE ? false : true;
> +			print_flags = change == REMOVE;

Read the deleted code above this again.

(you have inverted the logic)

>  			continue;
>  		}
>  		if (i == imax) {
> @@ -3282,7 +3282,7 @@ static char *get_script_path(const char *script_root, const char *suffix)
>  
>  static bool is_top_script(const char *script_path)
>  {
> -	return ends_with(script_path, "top") == NULL ? false : true;
> +	return ends_with(script_path, "top") == NULL;

and here.