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mm/SPARC: 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>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
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 2013-05-07 16:18:08 -07:00 committed by Linus Torvalds
parent 0f47c9423c
commit 70affe4520
3 changed files with 12 additions and 68 deletions
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15
arch/sparc/kernel/leon_smp.c
View File

@ -253,24 +253,15 @@ void __init leon_smp_done(void)
/* Free unneeded trap tables */
if (!cpu_present(1)) {
ClearPageReserved(virt_to_page(&trapbase_cpu1));
init_page_count(virt_to_page(&trapbase_cpu1));
free_page((unsigned long)&trapbase_cpu1);
totalram_pages++;
free_reserved_page(virt_to_page(&trapbase_cpu1));
num_physpages++;
}
if (!cpu_present(2)) {
ClearPageReserved(virt_to_page(&trapbase_cpu2));
init_page_count(virt_to_page(&trapbase_cpu2));
free_page((unsigned long)&trapbase_cpu2);
totalram_pages++;
free_reserved_page(virt_to_page(&trapbase_cpu2));
num_physpages++;
}
if (!cpu_present(3)) {
ClearPageReserved(virt_to_page(&trapbase_cpu3));
init_page_count(virt_to_page(&trapbase_cpu3));
free_page((unsigned long)&trapbase_cpu3);
totalram_pages++;
free_reserved_page(virt_to_page(&trapbase_cpu3));
num_physpages++;
}
/* Ok, they are spinning and ready to go. */

37
arch/sparc/mm/init_32.c
View File

@ -366,45 +366,14 @@ void __init mem_init(void)
void free_initmem (void)
{
unsigned long addr;
unsigned long freed;
addr = (unsigned long)(&__init_begin);
freed = (unsigned long)(&__init_end) - addr;
for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
struct page *p;
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
p = virt_to_page(addr);
ClearPageReserved(p);
init_page_count(p);
__free_page(p);
totalram_pages++;
num_physpages++;
}
printk(KERN_INFO "Freeing unused kernel memory: %ldk freed\n",
freed >> 10);
num_physpages += free_initmem_default(POISON_FREE_INITMEM);
}
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (start < end)
printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
(end - start) >> 10);
for (; start < end; start += PAGE_SIZE) {
struct page *p;
memset((void *)start, POISON_FREE_INITMEM, PAGE_SIZE);
p = virt_to_page(start);
ClearPageReserved(p);
init_page_count(p);
__free_page(p);
totalram_pages++;
num_physpages++;
}
num_physpages += free_reserved_area(start, end, POISON_FREE_INITMEM,
"initrd");
}
#endif

28
arch/sparc/mm/init_64.c
View File

@ -2059,8 +2059,7 @@ void __init mem_init(void)
/* We subtract one to account for the mem_map_zero page
* allocated below.
*/
totalram_pages -= 1;
num_physpages = totalram_pages;
num_physpages = totalram_pages - 1;
/*
* Set up the zero page, mark it reserved, so that page count
@ -2071,7 +2070,7 @@ void __init mem_init(void)
prom_printf("paging_init: Cannot alloc zero page.\n");
prom_halt();
}
SetPageReserved(mem_map_zero);
mark_page_reserved(mem_map_zero);
codepages = (((unsigned long) _etext) - ((unsigned long) _start));
codepages = PAGE_ALIGN(codepages) >> PAGE_SHIFT;
@ -2111,37 +2110,22 @@ void free_initmem(void)
initend = (unsigned long)(__init_end) & PAGE_MASK;
for (; addr < initend; addr += PAGE_SIZE) {
unsigned long page;
struct page *p;
page = (addr +
((unsigned long) __va(kern_base)) -
((unsigned long) KERNBASE));
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
if (do_free) {
p = virt_to_page(page);
ClearPageReserved(p);
init_page_count(p);
__free_page(p);
totalram_pages++;
}
if (do_free)
free_reserved_page(virt_to_page(page));
}
}
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (start < end)
printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
for (; start < end; start += PAGE_SIZE) {
struct page *p = virt_to_page(start);
ClearPageReserved(p);
init_page_count(p);
__free_page(p);
totalram_pages++;
}
num_physpages += free_reserved_area(start, end, POISON_FREE_INITMEM,
"initrd");
}
#endif