From: Nikanth Karthikesan <knikanth@suse.de>
To: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Matt Mackall <mpm@selenic.com>,
Richard Guenther <rguenther@suse.de>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Michael Matz <matz@novell.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] Export amount of anonymous memory in a mapping via smaps
Date: Thu, 16 Sep 2010 08:56:25 +0530 [thread overview]
Message-ID: <201009160856.25923.knikanth@suse.de> (raw)
In-Reply-To: <AANLkTini3k1hK-9RM6io0mOf4VoDzGpbUEpiv=WHfhEW@mail.gmail.com>
Export the number of anonymous pages in a mapping via smaps.
Even the private pages in a mapping backed by a file, would be marked as
anonymous, when they are modified. Export this information to user-space via
smaps.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
---
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 439fc1f..3c18fc8 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -326,6 +326,7 @@ struct mem_size_stats {
unsigned long private_clean;
unsigned long private_dirty;
unsigned long referenced;
+ unsigned long anonymous;
unsigned long swap;
u64 pss;
};
@@ -356,6 +357,9 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
if (!page)
continue;
+ if (PageAnon(page))
+ mss->anonymous += PAGE_SIZE;
+
mss->resident += PAGE_SIZE;
/* Accumulate the size in pages that have been accessed. */
if (pte_young(ptent) || PageReferenced(page))
@@ -409,6 +413,7 @@ static int show_smap(struct seq_file *m, void *v)
"Private_Clean: %8lu kB\n"
"Private_Dirty: %8lu kB\n"
"Referenced: %8lu kB\n"
+ "Anonymous: %8lu kB\n"
"Swap: %8lu kB\n"
"KernelPageSize: %8lu kB\n"
"MMUPageSize: %8lu kB\n",
@@ -420,6 +425,7 @@ static int show_smap(struct seq_file *m, void *v)
mss.private_clean >> 10,
mss.private_dirty >> 10,
mss.referenced >> 10,
+ mss.anonymous >> 10,
mss.swap >> 10,
vma_kernel_pagesize(vma) >> 10,
vma_mmu_pagesize(vma) >> 10);
--
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next prev parent reply other threads:[~2010-09-16 3:23 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-14 11:10 [PATCH] After swapout/swapin private dirty mappings become clean Nikanth Karthikesan
2010-09-14 11:33 ` Richard Guenther
2010-09-14 17:12 ` Nikanth Karthikesan
2010-09-14 17:14 ` [PATCH v2] After swapout/swapin private dirty mappings are reported clean in smaps Nikanth Karthikesan
2010-09-15 0:26 ` KOSAKI Motohiro
2010-09-15 4:38 ` Nikanth Karthikesan
2010-09-15 4:48 ` KOSAKI Motohiro
2010-09-15 5:04 ` Nikanth Karthikesan
2010-09-15 5:20 ` KOSAKI Motohiro
2010-09-15 6:31 ` Nikanth Karthikesan
2010-09-15 14:09 ` Balbir Singh
2010-09-15 14:14 ` Richard Guenther
2010-09-15 14:46 ` Matt Mackall
2010-09-15 14:53 ` Richard Guenther
2010-09-15 17:24 ` Matt Mackall
2010-09-15 19:08 ` Richard Guenther
2010-09-15 19:18 ` Hugh Dickins
2010-09-15 19:46 ` Matt Mackall
2010-09-15 19:53 ` Richard Guenther
2010-09-15 21:47 ` Hugh Dickins
2010-09-16 3:26 ` Nikanth Karthikesan [this message]
2010-09-16 3:52 ` [PATCH] Export amount of anonymous memory in a mapping via smaps KOSAKI Motohiro
2010-09-16 6:04 ` [PATCH] Document the new Anonymous field in smaps Nikanth Karthikesan
2010-09-16 6:34 ` [PATCH] smaps: fix dirty pages accounting KOSAKI Motohiro
2010-09-16 16:56 ` Hugh Dickins
2010-09-16 16:50 ` [PATCH] Document the new Anonymous field in smaps Hugh Dickins
2010-09-17 6:04 ` [PATCH v2] " Nikanth Karthikesan
2010-09-20 7:11 ` Hugh Dickins
2010-09-20 19:24 ` Matt Mackall
2010-09-16 16:40 ` [PATCH] Export amount of anonymous memory in a mapping via smaps Hugh Dickins
2010-09-15 17:41 ` [PATCH v2] After swapout/swapin private dirty mappings are reported clean in smaps Balbir Singh
2010-09-19 17:37 ` Nikanth Karthikesan
2010-09-19 17:38 ` [PATCH] Document /proc/pid/pagemap in Documentation/filesystems/proc.txt Nikanth Karthikesan
2010-09-20 21:27 ` Matt Mackall
2010-09-20 5:24 ` [PATCH v2] After swapout/swapin private dirty mappings are reported clean in smaps Nikanth Karthikesan
2010-09-20 14:30 ` Richard Guenther
2010-09-15 0:24 ` [PATCH] After swapout/swapin private dirty mappings become clean KOSAKI Motohiro
2010-09-15 4:37 ` Nikanth Karthikesan
2010-09-15 4:46 ` KOSAKI Motohiro
2010-09-15 5:00 ` Nikanth Karthikesan
2010-09-15 5:15 ` KOSAKI Motohiro
2010-09-15 6:29 ` Nikanth Karthikesan
2010-09-15 8:40 ` Richard Guenther
2010-09-16 1:29 ` KOSAKI Motohiro
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