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mm/ARM: use common help functions to free reserved pages

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Use common help functions to free reserved pages.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiang Liu
2013-04-29 15:06:26 -07:00
committed by Linus Torvalds
parent f3beeb4a51
commit 83db0384a9
2 changed files with 18 additions and 56 deletions
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26
arch/arm64/mm/init.c
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@@ -197,24 +197,6 @@ void __init bootmem_init(void)
max_pfn = max_low_pfn = max;
}
static inline int free_area(unsigned long pfn, unsigned long end, char *s)
{
unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10);
for (; pfn < end; pfn++) {
struct page *page = pfn_to_page(pfn);
ClearPageReserved(page);
init_page_count(page);
__free_page(page);
pages++;
}
if (size && s)
pr_info("Freeing %s memory: %dK\n", s, size);
return pages;
}
/*
* Poison init memory with an undefined instruction (0x0).
*/
@@ -405,9 +387,7 @@ void __init mem_init(void)
void free_initmem(void)
{
poison_init_mem(__init_begin, __init_end - __init_begin);
totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)),
__phys_to_pfn(__pa(__init_end)),
"init");
free_initmem_default(0);
}
#ifdef CONFIG_BLK_DEV_INITRD
@@ -418,9 +398,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
{
if (!keep_initrd) {
poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
totalram_pages += free_area(__phys_to_pfn(__pa(start)),
__phys_to_pfn(__pa(end)),
"initrd");
free_reserved_area(start, end, 0, "initrd");
}
}