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

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Use common help functions to free reserved pages.  Also include
<asm/sections.h> to avoid local declarations.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@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 15:06:25 -07:00
committed by Linus Torvalds
parent 69afade72a
commit f3beeb4a51
3 changed files with 6 additions and 26 deletions
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24
arch/alpha/mm/init.c
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@@ -31,6 +31,7 @@
#include <asm/console.h>
#include <asm/tlb.h>
#include <asm/setup.h>
#include <asm/sections.h>
extern void die_if_kernel(char *,struct pt_regs *,long);
@@ -281,8 +282,6 @@ printk_memory_info(void)
{
unsigned long codesize, reservedpages, datasize, initsize, tmp;
extern int page_is_ram(unsigned long) __init;
extern char _text, _etext, _data, _edata;
extern char __init_begin, __init_end;
/* printk all informations */
reservedpages = 0;
@@ -317,33 +316,16 @@ mem_init(void)
}
#endif /* CONFIG_DISCONTIGMEM */
void
free_reserved_mem(void *start, void *end)
{
void *__start = start;
for (; __start < end; __start += PAGE_SIZE) {
ClearPageReserved(virt_to_page(__start));
init_page_count(virt_to_page(__start));
free_page((long)__start);
totalram_pages++;
}
}
void
free_initmem(void)
{
extern char __init_begin, __init_end;
free_reserved_mem(&__init_begin, &__init_end);
printk ("Freeing unused kernel memory: %ldk freed\n",
(&__init_end - &__init_begin) >> 10);
free_initmem_default(0);
}
#ifdef CONFIG_BLK_DEV_INITRD
void
free_initrd_mem(unsigned long start, unsigned long end)
{
free_reserved_mem((void *)start, (void *)end);
printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
free_reserved_area(start, end, 0, "initrd");
}
#endif