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yaml
---
r: 365370
b: refs/heads/master
c: 0999f11
h: refs/heads/master
v: v3
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Jiang Liu authored and Linus Torvalds committed Apr 29, 2013
1 parent b814433 commit fe1e578
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Showing 2 changed files with 7 additions and 30 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 5d585e5c4840381112011aa257c7a94b2b66f9de
refs/heads/master: 0999f1193a51de6317171b340a19a1af70d7ecb0
35 changes: 6 additions & 29 deletions trunk/arch/s390/mm/init.c
Original file line number Diff line number Diff line change
Expand Up @@ -42,11 +42,10 @@ pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE)));
unsigned long empty_zero_page, zero_page_mask;
EXPORT_SYMBOL(empty_zero_page);

static unsigned long __init setup_zero_pages(void)
static void __init setup_zero_pages(void)
{
struct cpuid cpu_id;
unsigned int order;
unsigned long size;
struct page *page;
int i;

Expand Down Expand Up @@ -83,14 +82,11 @@ static unsigned long __init setup_zero_pages(void)
page = virt_to_page((void *) empty_zero_page);
split_page(page, order);
for (i = 1 << order; i > 0; i--) {
SetPageReserved(page);
mark_page_reserved(page);
page++;
}

size = PAGE_SIZE << order;
zero_page_mask = (size - 1) & PAGE_MASK;

return 1UL << order;
zero_page_mask = ((PAGE_SIZE << order) - 1) & PAGE_MASK;
}

/*
Expand Down Expand Up @@ -147,7 +143,7 @@ void __init mem_init(void)

/* this will put all low memory onto the freelists */
totalram_pages += free_all_bootmem();
totalram_pages -= setup_zero_pages(); /* Setup zeroed pages. */
setup_zero_pages(); /* Setup zeroed pages. */

reservedpages = 0;

Expand All @@ -166,34 +162,15 @@ void __init mem_init(void)
PFN_ALIGN((unsigned long)&_eshared) - 1);
}

void free_init_pages(char *what, unsigned long begin, unsigned long end)
{
unsigned long addr = begin;

if (begin >= end)
return;
for (; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
memset((void *)(addr & PAGE_MASK), POISON_FREE_INITMEM,
PAGE_SIZE);
free_page(addr);
totalram_pages++;
}
printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
}

void free_initmem(void)
{
free_init_pages("unused kernel memory",
(unsigned long)&__init_begin,
(unsigned long)&__init_end);
free_initmem_default(0);
}

#ifdef CONFIG_BLK_DEV_INITRD
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
free_init_pages("initrd memory", start, end);
free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif

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