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Date: Wed, 8 May 2013 23:51:04 +0800 From: Jiang Liu <liuj97@...il.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Jiang Liu <jiang.liu@...wei.com>, David Rientjes <rientjes@...gle.com>, Wen Congyang <wency@...fujitsu.com>, Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Michal Hocko <mhocko@...e.cz>, James Bottomley <James.Bottomley@...senPartnership.com>, Sergei Shtylyov <sergei.shtylyov@...entembedded.com>, David Howells <dhowells@...hat.com>, Mark Salter <msalter@...hat.com>, Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org, linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org, Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>, Al Viro <viro@...iv.linux.org.uk>, user-mode-linux-devel@...ts.sourceforge.net Subject: [PATCH v5, part4 07/41] UML: normalize global variables exported by vmlinux.lds Normalize global variables exported by vmlinux.lds to conform usage guidelines from include/asm-generic/sections.h. 1) Use _text to mark the start of the kernel image including the head text, and _stext to mark the start of the .text section. 2) Export mandatory global variables __bss_stop. 3) Adjust __init_begin and __init_end to avoid acrossing .text and .data sections. Signed-off-by: Jiang Liu <jiang.liu@...wei.com> Cc: Jeff Dike <jdike@...toit.com> Cc: Richard Weinberger <richard@....at> Cc: Al Viro <viro@...iv.linux.org.uk> Cc: user-mode-linux-devel@...ts.sourceforge.net Cc: linux-kernel@...r.kernel.org --- arch/um/include/asm/common.lds.S | 1 - arch/um/kernel/dyn.lds.S | 6 ++++-- arch/um/kernel/uml.lds.S | 7 +++++-- 3 files changed, 9 insertions(+), 5 deletions(-) diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S index 4938de5..1dd5bd8 100644 --- a/arch/um/include/asm/common.lds.S +++ b/arch/um/include/asm/common.lds.S @@ -57,7 +57,6 @@ *(.uml.initcall.init) __uml_initcall_end = .; } - __init_end = .; SECURITY_INIT diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index fb8fd6f..adde088 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -14,8 +14,6 @@ SECTIONS __binary_start = .; . = ALIGN(4096); /* Init code and data */ _text = .; - _stext = .; - __init_begin = .; INIT_TEXT_SECTION(PAGE_SIZE) . = ALIGN(PAGE_SIZE); @@ -67,6 +65,7 @@ SECTIONS } =0x90909090 .plt : { *(.plt) } .text : { + _stext = .; TEXT_TEXT SCHED_TEXT LOCK_TEXT @@ -91,7 +90,9 @@ SECTIONS #include <asm/common.lds.S> + __init_begin = .; init.data : { INIT_DATA } + __init_end = .; /* Ensure the __preinit_array_start label is properly aligned. We could instead move the label definition inside the section, but @@ -155,6 +156,7 @@ SECTIONS . = ALIGN(32 / 8); . = ALIGN(32 / 8); } + __bss_stop = .; _end = .; PROVIDE (end = .); diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S index ff65fb4..6899195 100644 --- a/arch/um/kernel/uml.lds.S +++ b/arch/um/kernel/uml.lds.S @@ -20,13 +20,12 @@ SECTIONS . = START + SIZEOF_HEADERS; _text = .; - _stext = .; - __init_begin = .; INIT_TEXT_SECTION(0) . = ALIGN(PAGE_SIZE); .text : { + _stext = .; TEXT_TEXT SCHED_TEXT LOCK_TEXT @@ -62,7 +61,10 @@ SECTIONS #include <asm/common.lds.S> + __init_begin = .; init.data : { INIT_DATA } + __init_end = .; + .data : { INIT_TASK_DATA(KERNEL_STACK_SIZE) @@ -97,6 +99,7 @@ SECTIONS PROVIDE(_bss_start = .); SBSS(0) BSS(0) + __bss_stop = .; _end = .; PROVIDE (end = .); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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