mm: memcg: do not trap chargers with full callstack on OOM

[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index f79ced7..6682da3 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -107,14 +107,6 @@ extern unsigned long this_cpu_load(void);
 extern void calc_global_load(unsigned long ticks);
 extern void update_cpu_load_nohz(void);
 
-/* Notifier for when a task gets migrated to a new CPU */
-struct task_migration_notifier {
-       struct task_struct *task;
-       int from_cpu;
-       int to_cpu;
-};
-extern void register_task_migration_notifier(struct notifier_block *n);
-
 extern unsigned long get_parent_ip(unsigned long addr);
 
 extern void dump_cpu_task(int cpu);
@@ -1401,6 +1393,13 @@ struct task_struct {
                unsigned long memsw_nr_pages; /* uncharged mem+swap usage */
        } memcg_batch;
        unsigned int memcg_kmem_skip_account;
+       struct memcg_oom_info {
+               unsigned int may_oom:1;
+               unsigned int in_memcg_oom:1;
+               unsigned int oom_locked:1;
+               int wakeups;
+               struct mem_cgroup *wait_on_memcg;
+       } memcg_oom;
 #endif
 #ifdef CONFIG_UPROBES
        struct uprobe_task *utask;
@@ -2177,15 +2176,15 @@ static inline bool thread_group_leader(struct task_struct *p)
  * all we care about is that we have a task with the appropriate
  * pid, we don't actually care if we have the right task.
  */
-static inline int has_group_leader_pid(struct task_struct *p)
+static inline bool has_group_leader_pid(struct task_struct *p)
 {
-       return p->pid == p->tgid;
+       return task_pid(p) == p->signal->leader_pid;
 }
 
 static inline
-int same_thread_group(struct task_struct *p1, struct task_struct *p2)
+bool same_thread_group(struct task_struct *p1, struct task_struct *p2)
 {
-       return p1->tgid == p2->tgid;
+       return p1->signal == p2->signal;
 }
 
 static inline struct task_struct *next_thread(const struct task_struct *p)