linux-kernel - Re: [PATCH] linux/string.h: Introduce streq macro.

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Message-ID: <BANLkTikO4aJ4Lp5DS-G9tNH7TOpraVVaMg@mail.gmail.com>
Date:	Tue, 26 Apr 2011 16:54:42 -0300
From:	Thiago Farina <tfransosi@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Thiago Farina <tfransosi@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Joe Perches <joe@...ches.com>
Subject: Re: [PATCH] linux/string.h: Introduce streq macro.

+Copying Andrew and Joe.

On Tue, Apr 26, 2011 at 4:45 PM, Thiago Farina <tfransosi@...il.com> wrote:
> This macro is arguably more readable than its variants:
> - !strcmp(a, b)
> - strcmp(a, b) == 0
>
> Signed-off-by: Thiago Farina <tfransosi@...il.com>
> ---
>  Changes from v1 (Steven and Alexey review):
>  - Convert from macro to static inline.
>  - Remove the example.
>  - Add the suggested comment by Steven.
>
>  include/linux/string.h |   15 +++++++++++++++
>  1 files changed, 15 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/string.h b/include/linux/string.h
> index a716ee2..d859bb2 100644
> --- a/include/linux/string.h
> +++ b/include/linux/string.h
> @@ -134,6 +134,21 @@ extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
>                        const void *from, size_t available);
>
>  /**
> + * streq - Are two strings equal?
> + * @a: first string
> + * @b: second string
> + *
> + * Use: streq(a, b)
> + * Instead of: strcmp(a, b) == 0 or !strcmp(a, b)
> + *
> + * This makes the code more readable and less error prone.
> + */
> +static inline int streq(const char *a, const char *b)
> +{
> +       return strcmp(a, b) == 0;
> +}
> +
> +/**
>  * strstarts - does @str start with @prefix?
>  * @str: string to examine
>  * @prefix: prefix to look for.
> --
> 1.7.5.rc2.5.g60e19
>
>
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