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From:   David Laight <David.Laight@ACULAB.COM>
To:     'Jiapeng Chong' <jiapeng.chong@linux.alibaba.com>,
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Subject: RE: [PATCH] perf machine: Assign boolean values to a bool variable
Thread-Topic: [PATCH] perf machine: Assign boolean values to a bool variable
Thread-Index: AQHXFMyuUkzqglnwCE+oJIwnabqrBap8/PsQ
Date:   Wed, 10 Mar 2021 09:55:39 +0000
Message-ID: <e28b0392ce4349989fdf03470ed8fd3e@AcuMS.aculab.com>
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From: Jiapeng Chong
> Sent: 09 March 2021 10:11
> 
> Fix the following coccicheck warnings:
> 
> ./tools/perf/util/machine.c:2041:9-10: WARNING: return of 0/1 in
> function 'symbol__match_regex' with return type bool.
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
> ---
>  tools/perf/util/machine.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index b5c2d8b..435771e 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -2038,8 +2038,8 @@ int machine__process_event(struct machine *machine, union perf_event *event,
>  static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
>  {
>  	if (!regexec(regex, sym->name, 0, NULL, 0))
> -		return 1;
> -	return 0;
> +		return true;
> +	return false;

What's wrong with:
	return !regexec(regex, sym->name, 0, NULL, 0);

    David

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