summaryrefslogtreecommitdiff
path: root/include/linux/oom.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/oom.h')
-rw-r--r--include/linux/oom.h33
1 files changed, 31 insertions, 2 deletions
diff --git a/include/linux/oom.h b/include/linux/oom.h
index 537662315627..5e3aa8311c5e 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -1,19 +1,34 @@
#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 is deprecated, see
+ * Documentation/feature-removal-schedule.txt.
+ *
+ * /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>
struct zonelist;
struct notifier_block;
+struct mem_cgroup;
+struct task_struct;
/*
* Types of limitations to the nodes from which allocations may occur
@@ -22,9 +37,12 @@ enum oom_constraint {
CONSTRAINT_NONE,
CONSTRAINT_CPUSET,
CONSTRAINT_MEMORY_POLICY,
+ CONSTRAINT_MEMCG,
};
-extern int try_set_zone_oom(struct zonelist *zonelist, gfp_t gfp_flags);
+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);
extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,
@@ -43,5 +61,16 @@ static inline void oom_killer_enable(void)
{
oom_killer_disabled = false;
}
+
+/* The badness from the OOM killer */
+extern unsigned long badness(struct task_struct *p, struct mem_cgroup *mem,
+ const nodemask_t *nodemask, unsigned long uptime);
+
+extern struct task_struct *find_lock_task_mm(struct task_struct *p);
+
+/* sysctls */
+extern int sysctl_oom_dump_tasks;
+extern int sysctl_oom_kill_allocating_task;
+extern int sysctl_panic_on_oom;
#endif /* __KERNEL__*/
#endif /* _INCLUDE_LINUX_OOM_H */