linux-kernel - Re: [PATCH] rtl8xxxu: make arrays static, makes object smaller

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Message-ID: <CAB4CAwdd-+Oq+qrFTzUmG39yNgd_+Zn2rii=mXWOJb5x+4VHYw@mail.gmail.com>
Date:   Tue, 8 Oct 2019 13:36:28 +0800
From:   Chris Chiu <chiu@...lessm.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Jes Sorensen <Jes.Sorensen@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>, kernel-janitors@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] rtl8xxxu: make arrays static, makes object smaller

On Mon, Oct 7, 2019 at 9:53 PM Colin King <colin.king@...onical.com> wrote:
>
> From: Colin Ian King <colin.king@...onical.com>
>
> Don't populate const arrays on the stack but instead make them
> static. Makes the object code smaller by 60 bytes.
>
> Before:
>    text    data     bss     dec     hex filename
>   15133    8768       0   23901    5d5d realtek/rtl8xxxu/rtl8xxxu_8192e.o
>   15209    6392       0   21601    5461 realtek/rtl8xxxu/rtl8xxxu_8723b.o
>  103254   31202     576  135032   20f78 realtek/rtl8xxxu/rtl8xxxu_core.o
>
> After:
>    text    data     bss     dec     hex filename
>   14861    9024       0   23885    5d4d realtek/rtl8xxxu/rtl8xxxu_8192e.o
>   14953    6616       0   21569    5441 realtek/rtl8xxxu/rtl8xxxu_8723b.o
>  102986   31458     576  135020   20f6c realtek/rtl8xxxu/rtl8xxxu_core.o
>
> (gcc version 9.2.1, amd64)
>
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
Reviewed-by: Chris Chiu <chiu@...lessm.com>