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yaml
---
r: 365417
b: refs/heads/master
c: e8216da
h: refs/heads/master
i:
  365415: 1df9ffb
v: v3
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Johannes Weiner authored and Linus Torvalds committed Apr 29, 2013
1 parent 4765d37 commit 62f488e
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Showing 2 changed files with 39 additions and 41 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: 6c7a2ca4c11bcc00f8b4b840a4fca694d20e8905
refs/heads/master: e8216da5c719c3bfec12779b6faf456009f01c44
78 changes: 38 additions & 40 deletions trunk/arch/x86/mm/init_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -1281,7 +1281,8 @@ static long __meminitdata addr_start, addr_end;
static void __meminitdata *p_start, *p_end;
static int __meminitdata node_start;

int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
static int __meminit vmemmap_populate_hugepages(unsigned long start,
unsigned long end, int node)
{
unsigned long addr;
unsigned long next;
Expand All @@ -1290,7 +1291,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
pmd_t *pmd;

for (addr = start; addr < end; addr = next) {
void *p = NULL;
next = pmd_addr_end(addr, end);

pgd = vmemmap_pgd_populate(addr, node);
if (!pgd)
Expand All @@ -1300,53 +1301,50 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
if (!pud)
return -ENOMEM;

if (!cpu_has_pse) {
next = (addr + PAGE_SIZE) & PAGE_MASK;
pmd = vmemmap_pmd_populate(pud, addr, node);

if (!pmd)
return -ENOMEM;

p = vmemmap_pte_populate(pmd, addr, node);
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd)) {
pte_t entry;
void *p;

p = vmemmap_alloc_block_buf(PMD_SIZE, node);
if (!p)
return -ENOMEM;
} else {
next = pmd_addr_end(addr, end);

pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd)) {
pte_t entry;

p = vmemmap_alloc_block_buf(PMD_SIZE, node);
if (!p)
return -ENOMEM;

entry = pfn_pte(__pa(p) >> PAGE_SHIFT,
PAGE_KERNEL_LARGE);
set_pmd(pmd, __pmd(pte_val(entry)));

/* check to see if we have contiguous blocks */
if (p_end != p || node_start != node) {
if (p_start)
printk(KERN_DEBUG " [%lx-%lx] PMD -> [%p-%p] on node %d\n",
addr_start, addr_end-1, p_start, p_end-1, node_start);
addr_start = addr;
node_start = node;
p_start = p;
}

addr_end = addr + PMD_SIZE;
p_end = p + PMD_SIZE;
} else
vmemmap_verify((pte_t *)pmd, node, addr, next);
}
entry = pfn_pte(__pa(p) >> PAGE_SHIFT,
PAGE_KERNEL_LARGE);
set_pmd(pmd, __pmd(pte_val(entry)));

/* check to see if we have contiguous blocks */
if (p_end != p || node_start != node) {
if (p_start)
printk(KERN_DEBUG " [%lx-%lx] PMD -> [%p-%p] on node %d\n",
addr_start, addr_end-1, p_start, p_end-1, node_start);
addr_start = addr;
node_start = node;
p_start = p;
}

addr_end = addr + PMD_SIZE;
p_end = p + PMD_SIZE;
} else
vmemmap_verify((pte_t *)pmd, node, addr, next);
}
sync_global_pgds(start, end - 1);
return 0;
}

int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
{
int err;

if (cpu_has_pse)
err = vmemmap_populate_hugepages(start, end, node);
else
err = vmemmap_populate_basepages(start, end, node);
if (!err)
sync_global_pgds(start, end - 1);
return err;
}

#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HAVE_BOOTMEM_INFO_NODE)
void register_page_bootmem_memmap(unsigned long section_nr,
struct page *start_page, unsigned long size)
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