From: Jiang Liu <liuj97@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiang Liu <jiang.liu@huawei.com>,
David Rientjes <rientjes@google.com>,
Wen Congyang <wency@cn.fujitsu.com>, Mel Gorman <mgorman@suse.de>,
Minchan Kim <minchan@kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Michal Hocko <mhocko@suse.cz>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
David Howells <dhowells@redhat.com>,
Mark Salter <msalter@redhat.com>,
Jianguo Wu <wujianguo@huawei.com>,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH v4, part3 01/41] vmlinux.lds: add comments for global variables and clean up useless declarations
Date: Sat, 6 Apr 2013 22:32:00 +0800 [thread overview]
Message-ID: <1365258760-30821-2-git-send-email-jiang.liu@huawei.com> (raw)
In-Reply-To: <1365258760-30821-1-git-send-email-jiang.liu@huawei.com>
This patch documents global variables exported from vmlinux.lds.
1) Add comments about usage guidelines for global variables exported
from vmlinux.lds.S.
2) Remove unused __initdata_begin[] and __initdata_end[].
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
include/asm-generic/sections.h | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index c1a1216..f1a24b5 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -3,6 +3,26 @@
/* References to section boundaries */
+/*
+ * Usage guidelines:
+ * _text, _data: architecture specific, don't use them in arch-independent code
+ * [_stext, _etext]: contains .text.* sections, may also contain .rodata.*
+ * and/or .init.* sections
+ * [_sdata, _edata]: contains .data.* sections, may also contain .rodata.*
+ * and/or .init.* sections.
+ * [__start_rodata, __end_rodata]: contains .rodata.* sections
+ * [__init_begin, __init_end]: contains .init.* sections, but .init.text.*
+ * may be out of this range on some architectures.
+ * [_sinittext, _einittext]: contains .init.text.* sections
+ * [__bss_start, __bss_stop]: contains BSS sections
+ *
+ * Following global variables are optional and may be unavailable on some
+ * architectures and/or kernel configurations.
+ * _text, _data
+ * __kprobes_text_start, __kprobes_text_end
+ * __entry_text_start, __entry_text_end
+ * __ctors_start, __ctors_end
+ */
extern char _text[], _stext[], _etext[];
extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
@@ -12,7 +32,6 @@ extern char _end[];
extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
extern char __kprobes_text_start[], __kprobes_text_end[];
extern char __entry_text_start[], __entry_text_end[];
-extern char __initdata_begin[], __initdata_end[];
extern char __start_rodata[], __end_rodata[];
/* Start and end of .ctors section - used for constructor calls. */
--
1.7.9.5
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-04-06 14:42 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-06 14:31 [PATCH v4, part3 00/41] Simplify mem_init() implementations and kill num_physpages Jiang Liu
2013-04-06 14:32 ` Jiang Liu [this message]
2013-04-06 14:32 ` [PATCH v4, part3 02/41] avr32: normalize global variables exported by vmlinux.lds Jiang Liu
2013-04-07 8:00 ` Hans-Christian Egtvedt
2013-04-06 14:32 ` [PATCH v4, part3 03/41] c6x: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 04/41] h8300: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 05/41] score: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 06/41] tile: " Jiang Liu
2013-04-12 20:54 ` Chris Metcalf
2013-04-06 14:32 ` [PATCH v4, part3 07/41] UML: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 08/41] mm: introduce helper function mem_init_print_info() to simplify mem_init() Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 09/41] mm: use totalram_pages instead of num_physpages at runtime Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 10/41] mm/hotplug: prepare for removing num_physpages Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 11/41] mm/alpha: prepare for removing num_physpages and simplify mem_init() Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 12/41] mm/ARC: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 13/41] mm/ARM: " Jiang Liu
2013-04-19 16:54 ` Russell King - ARM Linux
2013-04-20 15:19 ` Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 14/41] mm/ARM64: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 15/41] mm/AVR32: " Jiang Liu
2013-04-07 7:59 ` Hans-Christian Egtvedt
2013-04-06 14:32 ` [PATCH v4, part3 16/41] mm/blackfin: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 17/41] mm/c6x: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 18/41] mm/cris: " Jiang Liu
2013-04-08 9:52 ` Jesper Nilsson
2013-04-06 14:32 ` [PATCH v4, part3 19/41] mm/frv: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 20/41] mm/h8300: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 21/41] mm/hexagon: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 22/41] mm/IA64: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 23/41] mm/m32r: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 24/41] mm/m68k: " Jiang Liu
2013-04-08 1:34 ` Greg Ungerer
2013-04-06 14:32 ` [PATCH v4, part3 25/41] mm/metag: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 26/41] mm/microblaze: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 27/41] mm/MIPS: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 28/41] mm/mn10300: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 29/41] mm/openrisc: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 30/41] mm/PARISC: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 31/41] mm/ppc: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 32/41] mm/s390: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 33/41] mm/score: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 34/41] mm/SH: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 35/41] mm/SPARC: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 36/41] mm/tile: " Jiang Liu
2013-04-12 20:56 ` Chris Metcalf
2013-04-06 14:32 ` [PATCH v4, part3 37/41] mm/um: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 38/41] mm/unicore32: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 39/41] mm/x86: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 40/41] mm/xtensa: " Jiang Liu
2013-04-06 14:32 ` [PATCH v4, part3 41/41] mm: kill global variable num_physpages Jiang Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1365258760-30821-2-git-send-email-jiang.liu@huawei.com \
--to=liuj97@gmail.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=dhowells@redhat.com \
--cc=jiang.liu@huawei.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=mhocko@suse.cz \
--cc=minchan@kernel.org \
--cc=msalter@redhat.com \
--cc=rientjes@google.com \
--cc=sergei.shtylyov@cogentembedded.com \
--cc=wency@cn.fujitsu.com \
--cc=wujianguo@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).