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authorWang, Yalin <Yalin.Wang@sonymobile.com>2015-02-11 15:24:51 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 17:06:00 -0800
commit56873f43abdcd574b25105867a990f067747b2f4 (patch)
treebe55c69ee61da7b4e10e46c89e62a2ca68adaf81 /tools
parent1d148e218a0d0566b1c06f2f45f1436d53b049b2 (diff)
downloadlinux-56873f43abdcd574b25105867a990f067747b2f4.tar.gz
mm:add KPF_ZERO_PAGE flag for /proc/kpageflags
Add KPF_ZERO_PAGE flag for zero_page, so that userspace processes can
detect zero_page in /proc/kpageflags, and then do memory analysis more
accurately.

Signed-off-by: Yalin Wang <yalin.wang@sonymobile.com>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/vm/page-types.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
index 264fbc297e0b..8bdf16b8ba60 100644
--- a/tools/vm/page-types.c
+++ b/tools/vm/page-types.c
@@ -133,6 +133,7 @@ static const char * const page_flag_names[] = {
 	[KPF_KSM]		= "x:ksm",
 	[KPF_THP]		= "t:thp",
 	[KPF_BALLOON]		= "o:balloon",
+	[KPF_ZERO_PAGE]		= "z:zero_page",
 
 	[KPF_RESERVED]		= "r:reserved",
 	[KPF_MLOCKED]		= "m:mlocked",