linux-kernel - Re: [PATCH] netlink: NL_SET_ERR_MSG

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Date:   Mon, 9 Aug 2021 18:30:33 -0400
From:   Jonathan Toppins <jtoppins@...hat.com>
To:     Joe Perches <joe@...ches.com>, netdev <netdev@...r.kernel.org>
Cc:     Johannes Berg <johannes.berg@...el.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] netlink: NL_SET_ERR_MSG - remove local static array

On 8/9/21 1:04 PM, Joe Perches wrote:
> The want was to have some separate object section for netlink messages
> so all netlink messages could be specifically listed by some tool but
> the effect is duplicating static const char arrays in the object code.
> 
> It seems unused presently so change the macro to avoid the local static
> declarations until such time as these actually are wanted and used.
> 
> This reduces object size ~8KB in an x86-64 defconfig without modules.
> 
> $ size vmlinux.o*
>     text	   data	    bss	    dec	    hex	filename
> 20110471	3460344	 741760	24312575	172faff	vmlinux.o.new
> 20119444	3460344	 741760	24321548	1731e0c	vmlinux.o.old
> 
> Signed-off-by: Joe Perches <joe@...ches.com>

Seems reasonable.

Acked-by: Jonathan Toppins <jtoppins@...hat.com>