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mm/metag: 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: James Hogan <james.hogan@imgtec.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 15:06:57 -07:00 committed by Linus Torvalds
parent d2309a1996
commit c941836819
1 changed files with 2 additions and 19 deletions
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21
arch/metag/mm/init.c
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@ -412,32 +412,15 @@ void __init mem_init(void)
return; return;
} }
static void free_init_pages(char *what, unsigned long begin, unsigned long end)
{
unsigned long addr;
for (addr = begin; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
free_page(addr);
totalram_pages++;
}
pr_info("Freeing %s: %luk freed\n", what, (end - begin) >> 10);
}
void free_initmem(void) void free_initmem(void)
{ {
free_init_pages("unused kernel memory", free_initmem_default(POISON_FREE_INITMEM);
(unsigned long)(&__init_begin),
(unsigned long)(&__init_end));
} }
#ifdef CONFIG_BLK_DEV_INITRD #ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end) void free_initrd_mem(unsigned long start, unsigned long end)
{ {
end = end & PAGE_MASK; free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
free_init_pages("initrd memory", start, end);
} }
#endif #endif