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From: walter harms <wharms@bfs.de>
To: Colin King <colin.king@canonical.com>
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
	alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ALSA: drivers: make array 'names' const, reduces object code size
Date: Mon, 27 Nov 2017 15:55:28 +0100	[thread overview]
Message-ID: <5A1C2760.1030704@bfs.de> (raw)
In-Reply-To: <20171127125851.10076-1-colin.king@canonical.com>



Am 27.11.2017 13:58, schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Don't populate array 'names' on the stack but instead make them static.
> Makes the object code smaller by 50 bytes:
> 
> Before:
>    text	   data	    bss	    dec	    hex	filename
>   21237	   9192	   1120	  31549	   7b3d	linux/sound/drivers/dummy.o
> 
> After:
>    text	   data	    bss	    dec	    hex	filename
>   21095	   9280	   1120	  31495	   7b07	linux/sound/drivers/dummy.o
> 
> (gcc version 7.2.0 x86_64)
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  sound/drivers/dummy.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
> index 7b2b1f766b00..69db45bc0197 100644
> --- a/sound/drivers/dummy.c
> +++ b/sound/drivers/dummy.c
> @@ -830,7 +830,7 @@ static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_el
>  static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol,
>  				struct snd_ctl_elem_info *info)
>  {
> -	const char *const names[] = { "None", "CD Player" };
> +	static const char *const names[] = { "None", "CD Player" };
>  
>  	return snd_ctl_enum_info(info, 1, 2, names);
>  }

nitpick: while here
   snd_ctl_enum_info(info, 1, ARRAY_SIZE(names), names);

just my 2 cents,
re,
 wh

WARNING: multiple messages have this Message-ID (diff)
From: walter harms <wharms@bfs.de>
To: Colin King <colin.king@canonical.com>
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
	alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ALSA: drivers: make array 'names' const, reduces object code size
Date: Mon, 27 Nov 2017 14:55:28 +0000	[thread overview]
Message-ID: <5A1C2760.1030704@bfs.de> (raw)
In-Reply-To: <20171127125851.10076-1-colin.king@canonical.com>



Am 27.11.2017 13:58, schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Don't populate array 'names' on the stack but instead make them static.
> Makes the object code smaller by 50 bytes:
> 
> Before:
>    text	   data	    bss	    dec	    hex	filename
>   21237	   9192	   1120	  31549	   7b3d	linux/sound/drivers/dummy.o
> 
> After:
>    text	   data	    bss	    dec	    hex	filename
>   21095	   9280	   1120	  31495	   7b07	linux/sound/drivers/dummy.o
> 
> (gcc version 7.2.0 x86_64)
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  sound/drivers/dummy.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
> index 7b2b1f766b00..69db45bc0197 100644
> --- a/sound/drivers/dummy.c
> +++ b/sound/drivers/dummy.c
> @@ -830,7 +830,7 @@ static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_el
>  static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol,
>  				struct snd_ctl_elem_info *info)
>  {
> -	const char *const names[] = { "None", "CD Player" };
> +	static const char *const names[] = { "None", "CD Player" };
>  
>  	return snd_ctl_enum_info(info, 1, 2, names);
>  }

nitpick: while here
   snd_ctl_enum_info(info, 1, ARRAY_SIZE(names), names);

just my 2 cents,
re,
 wh

  reply	other threads:[~2017-11-27 14:55 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-27 12:58 [PATCH] ALSA: drivers: make array 'names' const, reduces object code size Colin King
2017-11-27 14:55 ` walter harms [this message]
2017-11-27 14:55   ` walter harms
2017-11-27 15:40   ` Joe Perches
2017-11-27 15:40     ` Joe Perches
2017-11-27 15:40     ` Joe Perches
2017-11-27 16:00     ` walter harms
2017-11-27 16:00       ` walter harms
2017-11-27 17:34 ` Takashi Sakamoto
2017-11-27 17:34   ` Takashi Sakamoto
2017-11-27 17:34   ` Takashi Sakamoto
2017-11-27 19:51   ` Takashi Iwai
2017-11-27 19:51     ` Takashi Iwai
2017-11-27 19:51     ` Takashi Iwai
2017-11-28 10:39     ` Takashi Sakamoto
2017-11-28 10:39       ` Takashi Sakamoto
2017-11-28 10:39       ` Takashi Sakamoto
2017-11-27 19:51 ` Takashi Iwai
2017-11-27 19:51   ` Takashi Iwai
2017-11-27 19:51   ` Takashi Iwai

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