diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/memcontrol.h | 21 | ||||
| -rw-r--r-- | include/linux/sched.h | 4 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 34ac6497d01a..89d576cfcc4c 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -157,6 +157,10 @@ extern void mem_cgroup_replace_page_cache(struct page *oldpage, * * Toggle whether a failed memcg charge should invoke the OOM killer * or just return -ENOMEM. Returns the previous toggle state. + * + * NOTE: Any path that enables the OOM killer before charging must + * call mem_cgroup_oom_synchronize() afterward to finalize the + * OOM handling and clean up. */ static inline bool mem_cgroup_toggle_oom(bool new) { @@ -182,6 +186,13 @@ static inline void mem_cgroup_disable_oom(void) WARN_ON(old == false); } +static inline bool task_in_memcg_oom(struct task_struct *p) +{ + return p->memcg_oom.in_memcg_oom; +} + +bool mem_cgroup_oom_synchronize(void); + #ifdef CONFIG_MEMCG_SWAP extern int do_swap_account; #endif @@ -427,6 +438,16 @@ static inline void mem_cgroup_disable_oom(void) { } +static inline bool task_in_memcg_oom(struct task_struct *p) +{ + return false; +} + +static inline bool mem_cgroup_oom_synchronize(void) +{ + return false; +} + static inline void mem_cgroup_inc_page_stat(struct page *page, enum mem_cgroup_page_stat_item idx) { diff --git a/include/linux/sched.h b/include/linux/sched.h index 9ce1fa53031f..6682da36b293 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1395,6 +1395,10 @@ struct task_struct { 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 |