GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

smaps: break out smaps_pte_entry() from smaps_pte_range()

Browse source 
We will use smaps_pte_entry() in a moment to handle both small and
transparent large pages.  But, we must break it out of smaps_pte_range()
first.

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Eric B Munson <emunson@mgebm.net>
Tested-by: Eric B Munson <emunson@mgebm.net>
Cc: Michael J Wolf <mjwolf@us.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dave Hansen 2011-03-22 16:32:58 -07:00 • committed by Linus Torvalds
parent 033193275b
commit ae11c4d9f6
1 changed files with 47 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

33
fs/proc/task_mmu.c
View file

@ -333,33 +333,26 @@ struct mem_size_stats {
u64 pss; u64 pss;
}; };
static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
static void smaps_pte_entry(pte_t ptent, unsigned long addr,
struct mm_walk *walk) struct mm_walk *walk)
{ {
struct mem_size_stats *mss = walk->private; struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = mss->vma; struct vm_area_struct *vma = mss->vma;
pte_t *pte, ptent;
spinlock_t *ptl;
struct page *page; struct page *page;
int mapcount; int mapcount;
split_huge_page_pmd(walk->mm, pmd);
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
for (; addr != end; pte++, addr += PAGE_SIZE) {
ptent = *pte;
if (is_swap_pte(ptent)) { if (is_swap_pte(ptent)) {
mss->swap += PAGE_SIZE; mss->swap += PAGE_SIZE;
continue; return;
} }
if (!pte_present(ptent)) if (!pte_present(ptent))
continue; return;
page = vm_normal_page(vma, addr, ptent); page = vm_normal_page(vma, addr, ptent);
if (!page) if (!page)
continue; return;
if (PageAnon(page)) if (PageAnon(page))
mss->anonymous += PAGE_SIZE; mss->anonymous += PAGE_SIZE;
@ -382,7 +375,21 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
mss->private_clean += PAGE_SIZE; mss->private_clean += PAGE_SIZE;
mss->pss += (PAGE_SIZE << PSS_SHIFT); mss->pss += (PAGE_SIZE << PSS_SHIFT);
} }
} }
static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = mss->vma;
pte_t *pte;
spinlock_t *ptl;
split_huge_page_pmd(walk->mm, pmd);
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
for (; addr != end; pte++, addr += PAGE_SIZE)
smaps_pte_entry(*pte, addr, walk);
pte_unmap_unlock(pte - 1, ptl); pte_unmap_unlock(pte - 1, ptl);
cond_resched(); cond_resched();
return 0; return 0;