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authorPeter Oberparleiter <oberpar@linux.vnet.ibm.com>2009-06-17 19:28:03 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-18 16:03:57 -0400
commitb99b87f70c7785ab1e253c6220f4b0b57ce3a7f7 (patch)
treeec5688052334448ec8edd3a1a9cb95cd68501ac7 /include/asm-generic/vmlinux.lds.h
parente24aca672ff06aff0e6a1045efab86043ea5f735 (diff)
kernel: constructor support
Call constructors (gcc-generated initcall-like functions) during kernel start and module load. Constructors are e.g. used for gcov data initialization. Disable constructor support for usermode Linux to prevent conflicts with host glibc. Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Huang Ying <ying.huang@intel.com> Cc: Li Wei <W.Li@Sun.COM> Cc: Michael Ellerman <michaele@au1.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Heiko Carstens <heicars2@linux.vnet.ibm.com> Cc: Martin Schwidefsky <mschwid2@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-generic/vmlinux.lds.h')
-rw-r--r--include/asm-generic/vmlinux.lds.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 6bdba10fef4a..55413e568f07 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -440,12 +440,21 @@
440 INIT_TASK \ 440 INIT_TASK \
441 } 441 }
442 442
443#ifdef CONFIG_CONSTRUCTORS
444#define KERNEL_CTORS() VMLINUX_SYMBOL(__ctors_start) = .; \
445 *(.ctors) \
446 VMLINUX_SYMBOL(__ctors_end) = .;
447#else
448#define KERNEL_CTORS()
449#endif
450
443/* init and exit section handling */ 451/* init and exit section handling */
444#define INIT_DATA \ 452#define INIT_DATA \
445 *(.init.data) \ 453 *(.init.data) \
446 DEV_DISCARD(init.data) \ 454 DEV_DISCARD(init.data) \
447 CPU_DISCARD(init.data) \ 455 CPU_DISCARD(init.data) \
448 MEM_DISCARD(init.data) \ 456 MEM_DISCARD(init.data) \
457 KERNEL_CTORS() \
449 *(.init.rodata) \ 458 *(.init.rodata) \
450 DEV_DISCARD(init.rodata) \ 459 DEV_DISCARD(init.rodata) \
451 CPU_DISCARD(init.rodata) \ 460 CPU_DISCARD(init.rodata) \