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ARM: Keep exit text/data around for SMP_ON_UP 

When SMP_ON_UP is used and the spinlocks are inlined, we end up with
inline spinlocks in the exit code, with references from the SMP
alternatives section to the exit sections.  This causes link time
errors.  Avoid this by placing the exit sections in the init-discarded
region.

Cc: <stable@kernel.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-02-21 10:13:36 +00:00
parent 53399053eb
commit a9ad21fed0
1 changed files with 9 additions and 0 deletions
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9
arch/arm/kernel/vmlinux.lds.S
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@ -21,6 +21,12 @@
#define ARM_CPU_KEEP(x)
#endif
#if defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)
#define ARM_EXIT_KEEP(x) x
#else
#define ARM_EXIT_KEEP(x)
#endif
OUTPUT_ARCH(arm)
ENTRY(stext)
@ -43,6 +49,7 @@ SECTIONS
_sinittext = .;
HEAD_TEXT
INIT_TEXT
ARM_EXIT_KEEP(EXIT_TEXT)
_einittext = .;
ARM_CPU_DISCARD(PROC_INFO)
__arch_info_begin = .;
@ -67,6 +74,7 @@ SECTIONS
#ifndef CONFIG_XIP_KERNEL
__init_begin = _stext;
INIT_DATA
ARM_EXIT_KEEP(EXIT_DATA)
#endif
}
@ -162,6 +170,7 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
__init_begin = .;
INIT_DATA
ARM_EXIT_KEEP(EXIT_DATA)
. = ALIGN(PAGE_SIZE);
__init_end = .;
#endif