summaryrefslogtreecommitdiff
path: root/include/linux/mmzone.h
diff options
context:
space:
mode:
authorMinchan Kim <minchan@kernel.org>2013-02-23 04:33:58 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-24 05:50:15 +0400
commit194159fbcc0d6ac1351837d3cd7a27a4af0219a6 (patch)
treea5a960a4c8698001db50a987015131bb5d256c6e /include/linux/mmzone.h
parentc60514b6314137a9505c60966fda2094b22a2fda (diff)
downloadlinux-194159fbcc0d6ac1351837d3cd7a27a4af0219a6.tar.xz
mm: remove MIGRATE_ISOLATE check in hotpath
Several functions test MIGRATE_ISOLATE and some of those are hotpath but MIGRATE_ISOLATE is used only if we enable CONFIG_MEMORY_ISOLATION(ie, CMA, memory-hotplug and memory-failure) which are not common config option. So let's not add unnecessary overhead and code when we don't enable CONFIG_MEMORY_ISOLATION. Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mmzone.h')
-rw-r--r--include/linux/mmzone.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 73b64a38b984..4f4c8c26fa9d 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -57,7 +57,9 @@ enum {
*/
MIGRATE_CMA,
#endif
+#ifdef CONFIG_MEMORY_ISOLATION
MIGRATE_ISOLATE, /* can't allocate from here */
+#endif
MIGRATE_TYPES
};