linux-kernel - Re: [PATCH 06/15] ia64: convert to use __HEAD and HEAD

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Date:	Sun, 26 Apr 2009 13:21:24 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Tim Abbott <tabbott@....EDU>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Anders Kaseorg <andersk@....edu>,
	Waseem Daher <wdaher@....edu>,
	Denys Vlasenko <vda.linux@...glemail.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Andi Kleen <andi@...stfloor.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Jeff Arnold <jbarnold@....edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jon Masters <jonathan@...masters.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Theodore Ts'o <tytso@....edu>,
	Nikanth Karthikesan <knikanth@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	Américo Wang <xiyou.wangcong@...il.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Kyle McMartin <kyle@...artin.ca>,
	David Howells <dhowells@...hat.com>,
	Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH 06/15] ia64: convert to use __HEAD and HEAD_TEXT macros.

On Sat, Apr 25, 2009 at 10:11:01PM -0400, Tim Abbott wrote:
> This has the consequence of changing the section name use for head
> code from ".text.head" to ".head.text".  Since this commit changes all
> users in the architecture, this change should be harmless.
> 
> Signed-off-by: Tim Abbott <tabbott@....edu>
> Cc: Tony Luck <tony.luck@...el.com>
> ---
>  arch/ia64/kernel/head.S        |    2 +-
>  arch/ia64/kernel/vmlinux.lds.S |    4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
> index 23f846d..a572160 100644
> --- a/arch/ia64/kernel/head.S
> +++ b/arch/ia64/kernel/head.S
> @@ -181,7 +181,7 @@ swapper_pg_dir:
>  halt_msg:
>  	stringz "Halting kernel\n"
>  
> -	.section .text.head,"ax"
> +	__HEAD
>  
>  	.global start_ap
>  
> diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
> index 4a95e86..a8b879e 100644
> --- a/arch/ia64/kernel/vmlinux.lds.S
> +++ b/arch/ia64/kernel/vmlinux.lds.S
> @@ -51,8 +51,8 @@ SECTIONS
>  	KPROBES_TEXT
>  	*(.gnu.linkonce.t*)
>      }
> -  .text.head : AT(ADDR(.text.head) - LOAD_OFFSET)
> -	{ *(.text.head) }
> +  HEAD_TEXT_SECTION : AT(ADDR(HEAD_TEXT_SECTION) - LOAD_OFFSET)
> +	{ HEAD_TEXT }

1) Spell it out directly rahter than using a macro
2) Consider fixing the style when you are here anyway.
   The 'correct' style is to use C rules for '{}' and indent.
   But I guess you followed style of the file - which is ok.

	Sam
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