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mm/score: 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: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.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 15:06:49 -07:00 committed by Linus Torvalds
parent 0999f1193a
commit 7265d80f06
1 changed files with 5 additions and 28 deletions
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33
arch/score/mm/init.c
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@ -43,7 +43,7 @@ EXPORT_SYMBOL_GPL(empty_zero_page);
static struct kcore_list kcore_mem, kcore_vmalloc;
static unsigned long setup_zero_page(void)
static void setup_zero_page(void)
{
struct page *page;
@ -52,9 +52,7 @@ static unsigned long setup_zero_page(void)
panic("Oh boy, that early out of memory?");
page = virt_to_page((void *) empty_zero_page);
SetPageReserved(page);
return 1UL;
mark_page_reserved(page);
}
#ifndef CONFIG_NEED_MULTIPLE_NODES
@ -84,7 +82,7 @@ void __init mem_init(void)
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
totalram_pages += free_all_bootmem();
totalram_pages -= setup_zero_page(); /* Setup zeroed pages. */
setup_zero_page(); /* Setup zeroed pages. */
reservedpages = 0;
for (tmp = 0; tmp < max_low_pfn; tmp++)
@ -109,37 +107,16 @@ void __init mem_init(void)
}
#endif /* !CONFIG_NEED_MULTIPLE_NODES */
static void free_init_pages(const char *what, unsigned long begin, unsigned long end)
{
unsigned long pfn;
for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) {
struct page *page = pfn_to_page(pfn);
void *addr = phys_to_virt(PFN_PHYS(pfn));
ClearPageReserved(page);
init_page_count(page);
memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
__free_page(page);
totalram_pages++;
}
printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
}
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
free_init_pages("initrd memory",
virt_to_phys((void *) start),
virt_to_phys((void *) end));
free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif
void __init_refok free_initmem(void)
{
free_init_pages("unused kernel memory",
__pa(&__init_begin),
__pa(&__init_end));
free_initmem_default(POISON_FREE_INITMEM);
}
unsigned long pgd_current;