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ARM: 8168/1: extend __init_end to a page align address

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This patch changes the __init_end address to a
page align address, so that free_initmem() can
free the whole .init section, because if the end
address is not page aligned, it will round down to
a page align address, then the tail unligned page
will not be freed.

Signed-off-by: wang <yalin.wang2010@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Yalin Wang 2014-09-26 03:30:59 +01:00 • committed by Russell King
parent e16343c47e
commit 562c85cadb
3 changed files with 4 additions and 2 deletions
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2
arch/arm/kernel/vmlinux.lds.S
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@ -219,8 +219,8 @@ SECTIONS
__data_loc = ALIGN(4); /* location in binary */ __data_loc = ALIGN(4); /* location in binary */
. = PAGE_OFFSET + TEXT_OFFSET; . = PAGE_OFFSET + TEXT_OFFSET;
#else #else
__init_end = .;
. = ALIGN(THREAD_SIZE); . = ALIGN(THREAD_SIZE);
__init_end = .;
__data_loc = .; __data_loc = .;
#endif #endif

2
arch/arm64/kernel/vmlinux.lds.S
View file

@ -97,9 +97,9 @@ SECTIONS
PERCPU_SECTION(64) PERCPU_SECTION(64)
. = ALIGN(PAGE_SIZE);
__init_end = .; __init_end = .;
. = ALIGN(PAGE_SIZE);
_data = .; _data = .;
_sdata = .; _sdata = .;
RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE) RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)

2
include/asm-generic/vmlinux.lds.h
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@ -40,6 +40,8 @@
* } * }
* *
* [__init_begin, __init_end] is the init section that may be freed after init * [__init_begin, __init_end] is the init section that may be freed after init
* // __init_begin and __init_end should be page aligned, so that we can
* // free the whole .init memory
* [_stext, _etext] is the text section * [_stext, _etext] is the text section
* [_sdata, _edata] is the data section * [_sdata, _edata] is the data section
* *