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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Tim Abbott <tabbott@MIT.EDU>
Cc: "Sam Ravnborg" <sam@ravnborg.org>,
	"Linux kernel mailing list" <linux-kernel@vger.kernel.org>,
	"Anders Kaseorg" <andersk@MIT.EDU>,
	"Waseem Daher" <wdaher@MIT.EDU>,
	"Denys Vlasenko" <vda.linux@googlemail.com>,
	"Rusty Russell" <rusty@rustcorp.com.au>,
	"Andi Kleen" <andi@firstfloor.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Stephen Rothwell" <sfr@canb.auug.org.au>,
	"Jeff Arnold" <jbarnold@MIT.EDU>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Jon Masters" <jonathan@jonmasters.org>,
	"Masami Hiramatsu" <mhiramat@redhat.com>,
	"Theodore Ts'o" <tytso@MIT.EDU>,
	"Nikanth Karthikesan" <knikanth@suse.de>,
	"Arjan van de Ven" <arjan@infradead.org>,
	"Paul Mundt" <lethal@linux-sh.org>,
	"Américo Wang" <xiyou.wangcong@gmail.com>,
	"Ralf Baechle" <ralf@linux-mips.org>,
	"Kyle McMartin" <kyle@mcmartin.ca>,
	"David Howells" <dhowells@redhat.com>,
	"Russell King" <rmk+kernel@arm.linux.org.uk>,
	"Tony Luck" <tony.luck@intel.com>
Subject: Re: [PATCH 05/15] arm: convert to use __HEAD and HEAD_TEXT macros.
Date: Mon, 27 Apr 2009 10:06:26 -0700 (PDT)	[thread overview]
Message-ID: <alpine.LFD.2.00.0904270958010.22156@localhost.localdomain> (raw)
In-Reply-To: <alpine.DEB.1.10.0904271121280.1665@vinegar-pot.mit.edu>



On Mon, 27 Apr 2009, Tim Abbott wrote:
> 
> Does .head.text actually need its own output section here?

Probably not. Does the ARM build system massage the end result some way 
looking for that .text.head section in the end? As you note, nobody else 
cares, and the proper patch may be more along the lines of something 
below.

Of course, most other architectures put the "init" section at the end, and 
leave the HEAD_TEXT in the regular text section, but I suspect the ARM way 
of laying things out (init text first) is probably better, since it allows 
you to free that head code too.

Not that it likely much matters. 

		Linus

---
 arch/arm/kernel/vmlinux.lds.S |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index c90f272..15520be 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -23,13 +23,11 @@ SECTIONS
 #else
 	. = PAGE_OFFSET + TEXT_OFFSET;
 #endif
-	.text.head : {
-		_stext = .;
-		_sinittext = .;
-		*(.text.head)
-	}
 
 	.init : {			/* Init code and data		*/
+		_stext = .;
+		_sinittext = .;
+			HEAD_TEXT
 			INIT_TEXT
 		_einittext = .;
 		__proc_info_begin = .;

  parent reply	other threads:[~2009-04-27 17:26 UTC|newest]

Thread overview: 99+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-05 23:14 [PATCH v2 0/4] Add support for compiling with -ffunction-sections -fdata-sections Tim Abbott
2009-04-05 23:14 ` [PATCH v2 1/4] Make section names compatible " Tim Abbott
2009-04-05 23:14   ` [PATCH v2 2/4] modpost: Check the section flags, not name, to catch missing "ax"/"aw" Tim Abbott
2009-04-05 23:14     ` [PATCH v2 3/4] modpost: Support objects with more than 64k sections Tim Abbott
2009-04-05 23:14       ` [PATCH v2 4/4] x86: Add an option to compile with -ffunction-sections -fdata-sections Tim Abbott
2009-04-08  0:34 ` [PATCH v2 0/4] Add support for compiling " Tim Abbott
2009-04-08  5:22   ` Rusty Russell
2009-04-20 20:26   ` Tim Abbott
2009-04-20 23:40     ` Linus Torvalds
2009-04-21  0:26       ` Tim Abbott
2009-04-21  0:35         ` Linus Torvalds
2009-04-21  1:25           ` H. Peter Anvin
2009-04-21  1:49             ` Denys Vlasenko
2009-04-21  3:18           ` Arjan van de Ven
2009-04-21  3:26             ` Anders Kaseorg
2009-04-21 10:26             ` Andi Kleen
2009-04-21  6:01           ` Tim Abbott
2009-04-21 10:24           ` Andi Kleen
2009-04-23 20:48           ` [PATCH v3 0/3] " Tim Abbott
2009-04-23 20:49             ` [PATCH v3 1/3] Make section names compatible " Tim Abbott
2009-04-23 20:49               ` [PATCH v3 2/3] modpost: Check the section flags, not name, to catch missing "ax"/"aw" Tim Abbott
2009-04-23 20:49                 ` [PATCH v3 3/3] modpost: Support objects with more than 64k sections Tim Abbott
2009-04-24  0:16               ` [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections Paul Mundt
2009-04-24 17:23               ` Sam Ravnborg
2009-04-26  2:10                 ` Tim Abbott
2009-04-26  2:10                   ` [PATCH 01/15] Add new HEAD_TEXT_SECTION macro Tim Abbott
2009-04-26  2:10                     ` [PATCH 02/15] xtensa: convert to use __HEAD and HEAD_TEXT macros Tim Abbott
2009-04-26  2:10                       ` [PATCH 03/15] alpha: " Tim Abbott
2009-04-26  2:10                         ` [PATCH 04/15] frv: convert frv " Tim Abbott
2009-04-26  2:11                           ` [PATCH 05/15] arm: convert " Tim Abbott
2009-04-26  2:11                             ` [PATCH 06/15] ia64: " Tim Abbott
2009-04-26  2:11                               ` [PATCH 07/15] m32r: " Tim Abbott
2009-04-26  2:11                                 ` [PATCH 08/15] m68k: " Tim Abbott
2009-04-26  2:11                                   ` [PATCH 09/15] mn10300: " Tim Abbott
2009-04-26  2:11                                     ` [PATCH 10/15] powerpc: " Tim Abbott
2009-04-26  2:11                                       ` [PATCH 11/15] s390: " Tim Abbott
2009-04-26  2:11                                         ` [PATCH 12/15] sh: " Tim Abbott
2009-04-26  2:11                                           ` [PATCH 13/15] sparc: " Tim Abbott
2009-04-26  2:11                                             ` [PATCH 14/15] x86: " Tim Abbott
2009-04-26  2:11                                               ` [PATCH 15/15] modpost: convert modpost to use HEAD_TEXT_SECTION macro Tim Abbott
2009-04-26 11:30                                                 ` Sam Ravnborg
2009-04-26 22:18                                                   ` Anders Kaseorg
2009-04-26 11:28                                               ` [PATCH 14/15] x86: convert to use __HEAD and HEAD_TEXT macros Sam Ravnborg
2009-04-26 16:40                                               ` Linus Torvalds
2009-04-26 17:12                                                 ` Linus Torvalds
2009-04-26 18:34                                                   ` Sam Ravnborg
2009-04-26 18:56                                                     ` Linus Torvalds
2009-04-26 19:23                                                       ` Sam Ravnborg
2009-04-26 21:07                                                         ` [PATCH] x86: beautify vmlinux_64.lds.S Sam Ravnborg
2009-04-27  4:54                                                           ` [tip:x86/kbuild] " tip-bot for Sam Ravnborg
2009-04-27  4:59                                                         ` [PATCH 14/15] x86: convert to use __HEAD and HEAD_TEXT macros Ingo Molnar
2009-04-27  6:42                                                           ` Sam Ravnborg
2009-04-27  7:19                                                             ` Ingo Molnar
2009-04-27  7:37                                                               ` Sam Ravnborg
2009-04-26 20:50                                                       ` Andi Kleen
2009-04-27  3:47                                                       ` Ingo Molnar
2009-04-30 10:39                                                   ` [tip:x86/kbuild] x86: boot/compressed/vmlinux.lds.S: fix build of bzImage with 64 bit compiler tip-bot for Sam Ravnborg
2009-04-30 14:52                                                     ` H. Peter Anvin
2009-04-30 15:09                                                       ` Sam Ravnborg
2009-04-30 16:29                                                         ` H. Peter Anvin
2009-04-30 17:52                                                           ` Sam Ravnborg
2009-04-30 19:02                                                             ` H. Peter Anvin
2009-04-26 11:24                                             ` [PATCH 13/15] sparc: convert to use __HEAD and HEAD_TEXT macros Sam Ravnborg
2009-04-26 11:24                                           ` [PATCH 12/15] sh: " Sam Ravnborg
2009-04-26 11:23                                         ` [PATCH 11/15] s390: " Sam Ravnborg
2009-04-26 11:23                                       ` [PATCH 10/15] powerpc: " Sam Ravnborg
2009-04-26 11:22                                     ` [PATCH 09/15] mn10300: " Sam Ravnborg
2009-04-26 11:22                                   ` [PATCH 08/15] m68k: " Sam Ravnborg
2009-04-26 11:21                                 ` [PATCH 07/15] m32r: " Sam Ravnborg
2009-04-28  3:34                                   ` Hirokazu Takata
2009-04-26 11:21                               ` [PATCH 06/15] ia64: " Sam Ravnborg
2009-04-26 11:19                             ` [PATCH 05/15] arm: " Sam Ravnborg
2009-04-27 16:46                               ` Tim Abbott
2009-04-27 17:00                                 ` Russell King
2009-04-27 17:06                                 ` Linus Torvalds [this message]
2009-04-27 17:29                                   ` Luck, Tony
2009-04-28  8:56                                   ` Ralf Baechle
2009-04-26 11:16                           ` [PATCH 04/15] frv: convert frv " Sam Ravnborg
2009-04-26 11:15                         ` [PATCH 03/15] alpha: convert " Sam Ravnborg
2009-04-26 11:13                       ` [PATCH 02/15] xtensa: " Sam Ravnborg
2009-04-26 16:29                     ` [PATCH 01/15] Add new HEAD_TEXT_SECTION macro Linus Torvalds
2009-04-26  2:42                   ` [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections Paul Mundt
2009-04-26  9:15                     ` Sam Ravnborg
2009-04-26  9:20                     ` [PATCH] kbuild: fix comment in modpost.c Sam Ravnborg
2009-04-26 17:28                       ` Tim Abbott
2009-04-26  9:09                   ` [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections Sam Ravnborg
2009-04-26 21:53                     ` Tim Abbott
2009-04-26 13:09                 ` Rusty Russell
2009-04-24  0:14             ` [PATCH v3 0/3] Add support for compiling " Paul Mundt
2009-04-24 14:19             ` Masami Hiramatsu
2009-04-24 15:32               ` Tim Abbott
2009-04-25  1:49                 ` Masami Hiramatsu
2009-04-21  1:05       ` [PATCH v2 0/4] " Denys Vlasenko
2009-04-21  5:50       ` Rusty Russell
2009-04-22 12:47         ` Paul Mundt
2009-04-21 14:02 ` Américo Wang
2009-04-21 17:40   ` Anders Kaseorg
2009-04-22 11:38     ` Masami Hiramatsu
2009-04-22 17:13       ` Tim Abbott

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