3 files changed, 23 insertions, 2 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 9f1afd361583..73564cac38c7 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -125,6 +125,8 @@ void mem_cgroup_update_file_mapped(struct page *page, int val);
 unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
                                                 gfp_t gfp_mask, int nid,
                                                 int zid);
+u64 mem_cgroup_get_limit(struct mem_cgroup *mem);
+
 #else /* CONFIG_CGROUP_MEM_RES_CTLR */
 struct mem_cgroup;
 
@@ -304,6 +306,12 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
         return 0;
 }
 
+static inline
+u64 mem_cgroup_get_limit(struct mem_cgroup *mem)
+{
+        return 0;
+}
+
 #endif /* CONFIG_CGROUP_MEM_CONT */
 
 #endif /* _LINUX_MEMCONTROL_H */
diff --git a/include/linux/oom.h b/include/linux/oom.h
index 40e5e3a6bc20..73b8d7b6dd19 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -1,14 +1,24 @@
 #ifndef __INCLUDE_LINUX_OOM_H
 #define __INCLUDE_LINUX_OOM_H
 
-/* /proc/<pid>/oom_adj set to -17 protects from the oom-killer */
+/*
+ * /proc/<pid>/oom_adj set to -17 protects from the oom-killer
+ */
 #define OOM_DISABLE (-17)
 /* inclusive */
 #define OOM_ADJUST_MIN (-16)
 #define OOM_ADJUST_MAX 15
 
+/*
+ * /proc/<pid>/oom_score_adj set to OOM_SCORE_ADJ_MIN disables oom killing for
+ * pid.
+ */
+#define OOM_SCORE_ADJ_MIN       (-1000)
+#define OOM_SCORE_ADJ_MAX       1000
+
 #ifdef __KERNEL__
 
+#include <linux/sched.h>
 #include <linux/types.h>
 #include <linux/nodemask.h>
 
@@ -27,6 +37,8 @@ enum oom_constraint {
         CONSTRAINT_MEMCG,
 };
 
+extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
+                        const nodemask_t *nodemask, unsigned long totalpages);
 extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
 extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9591907c4f79..ce160d68f5e7 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -621,7 +621,8 @@ struct signal_struct {
         struct tty_audit_buf *tty_audit_buf;
 #endif
 
-        int oom_adj;    /* OOM kill score adjustment (bit shift) */
+        int oom_adj;            /* OOM kill score adjustment (bit shift) */
+        int oom_score_adj;      /* OOM kill score adjustment */
 };
 
 /* Context switch must be unlocked if interrupts are to be enabled */