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authorPeter Zijlstra <peterz@infradead.org>2008-04-28 02:12:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:22 -0700
commit214e471ff99064726b2d8af3aa0e24a73c775531 (patch)
treea78674e56c27db43490cac0ef7c121e845051b62
parente20b8cca760ed2a6abcfe37ef56f2306790db648 (diff)
smaps: account swap entries
Show the amount of swap for each vma. This can be used to see where all the swap goes. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Matt Mackall <mpm@selenic.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/proc/task_mmu.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index f4ab76c7c66..7415eeb7cc3 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -338,8 +338,7 @@ const struct file_operations proc_maps_operations = {
#define PSS_SHIFT 12
#ifdef CONFIG_PROC_PAGE_MONITOR
-struct mem_size_stats
-{
+struct mem_size_stats {
struct vm_area_struct *vma;
unsigned long resident;
unsigned long shared_clean;
@@ -347,6 +346,7 @@ struct mem_size_stats
unsigned long private_clean;
unsigned long private_dirty;
unsigned long referenced;
+ unsigned long swap;
u64 pss;
};
@@ -363,6 +363,12 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
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;
@@ -421,7 +427,8 @@ static int show_smap(struct seq_file *m, void *v)
"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)),
@@ -429,7 +436,8 @@ static int show_smap(struct seq_file *m, void *v)
mss.shared_dirty >> 10,
mss.private_clean >> 10,
mss.private_dirty >> 10,
- mss.referenced >> 10);
+ mss.referenced >> 10,
+ mss.swap >> 10);
return ret;
}