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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2012-03-21 16:33:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-21 17:54:57 -0700 |
| commit | e873c49fbfdd595481976b915850e682441bcbec (patch) | |
| tree | 87ad5d125563d1eb6418e1f7b5a094fab6098108 /include/linux/kernel-page-flags.h | |
| parent | 025c5b2451e42c9e8dfdecd6dc84956ce8f321b5 (diff) | |
| download | blackbird-op-linux-e873c49fbfdd595481976b915850e682441bcbec.tar.gz blackbird-op-linux-e873c49fbfdd595481976b915850e682441bcbec.zip | |
pagemap: export KPF_THP
This flag shows that a given page is a subpage of a transparent hugepage.
It helps us debug and test the kernel by showing physical address of thp.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/kernel-page-flags.h')
| -rw-r--r-- | include/linux/kernel-page-flags.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kernel-page-flags.h b/include/linux/kernel-page-flags.h index bd92a89f4b0a..26a65711676f 100644 --- a/include/linux/kernel-page-flags.h +++ b/include/linux/kernel-page-flags.h @@ -30,6 +30,7 @@ #define KPF_NOPAGE 20 #define KPF_KSM 21 +#define KPF_THP 22 /* kernel hacking assistances * WARNING: subject to change, never rely on them! |
