linux-kernel - Re: [PATCH 3/8] list: Out of line INIT_LIST_HEAD and list

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Message-ID: <1400285003.5367.17.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Fri, 16 May 2014 17:03:23 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 3/8] list: Out of line INIT_LIST_HEAD and list_del

On Fri, 2014-05-16 at 14:43 -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> Out of lining these two inlines saves ~21k on my vmlinux
> 
> 14152713	2003976	1507328	17664017	10d8811	vmlinux-before-list
> 14131431	2008136	1507328	17646895	10d452f	vmlinux-list
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>
> ---

> +
> +void list_del(struct list_head *entry)
> +{
> +	__list_del(entry->prev, entry->next);
> +	entry->next = LIST_POISON1;
> +	entry->prev = LIST_POISON2;
> +}
> +EXPORT_SYMBOL(list_del);

Have you tried :

CONFIG_DEBUG_LIST=y

Function will be doubly defined/exported then....

BTW, my vmlinux is more like 

$ size vmlinux
   text	   data	    bss	    dec	    hex	filename
8233991	1743032	1904640	11881663	 b54cbf	vmlinux

Seems I beat you without even trying ;)


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