linux-kernel - Re: [PATCH] Bluetooth: make hw_err static, reduces object code size

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Message-Id: <6F6742C3-1D20-44F9-9EF6-DF6085069DA0@holtmann.org>
Date:   Fri, 25 Jan 2019 08:54:39 +0100
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Colin King <colin.king@...onical.com>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Bluetooth: make hw_err static, reduces object code size

Hi Colin,

> Don't populate the const array hw_err on the stack but instead make
> it static. Makes the object code smaller by 45 bytes:
> 
> Before:
>   text	   data	    bss	    dec	    hex	filename
> 100880	  21090	   1088	 123058	  1e0b2	linux/net/bluetooth/hci_core.o
> 
> After:
>   text	   data	    bss	    dec	    hex	filename
> 100739	  21186	   1088	 123013	  1e085	linux/net/bluetooth/hci_core.o
> 
> (gcc version 8.2.0 x86_64)
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
> net/bluetooth/hci_core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel