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Subject[PATCH] smaps: account swap entries
From
Date
Subject: smaps: account swap entries

Show the amount of swap for each vma. This can be used to see where all the
swap goes.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
fs/proc/task_mmu.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
Index: linux-2.6/fs/proc/task_mmu.c
===================================================================
--- linux-2.6.orig/fs/proc/task_mmu.c
+++ linux-2.6/fs/proc/task_mmu.c
@@ -313,6 +313,7 @@ struct mem_size_stats
unsigned long private_clean;
unsigned long private_dirty;
unsigned long referenced;
+ unsigned long swap;
u64 pss;
};

@@ -329,6 +330,12 @@ static int smaps_pte_range(pmd_t *pmd, u
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)) {
+ mss->swap += PAGE_SIZE;
+ continue;
+ }
+
if (!pte_present(ptent))
continue;

@@ -387,7 +394,8 @@ static int show_smap(struct seq_file *m,
"Shared_Dirty: %8lu kB\n"
"Private_Clean: %8lu kB\n"
"Private_Dirty: %8lu kB\n"
- "Referenced: %8lu kB\n",
+ "Referenced: %8lu kB\n"
+ "Swap: %8lu kB\n",
(vma->vm_end - vma->vm_start) >> 10,
mss.resident >> 10,
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
@@ -395,7 +403,8 @@ static int show_smap(struct seq_file *m,
mss.shared_dirty >> 10,
mss.private_clean >> 10,
mss.private_dirty >> 10,
- mss.referenced >> 10);
+ mss.referenced >> 10,
+ mss.swap >> 10);

return ret;
}



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