per-zone and reclaim enhancements for memory controller: remember reclaim priority in memory cgroup
Functions to remember reclaim priority per cgroup (as zone->prev_priority)
[akpm@linux-foundation.org: build fixes]
[akpm@linux-foundation.org: more build fixes]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Paul Menage <menage@google.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index bb9c079..f82158f 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -70,6 +70,11 @@
extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);
extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
+extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
+extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
+ int priority);
+extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
+ int priority);
#else /* CONFIG_CGROUP_MEM_CONT */
@@ -153,6 +158,21 @@
return 0;
}
+static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
+{
+ return 0;
+}
+
+static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
+ int priority)
+{
+}
+
+static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
+ int priority)
+{
+}
+
#endif /* CONFIG_CGROUP_MEM_CONT */
#endif /* _LINUX_MEMCONTROL_H */