diff options
| -rw-r--r-- | include/linux/vmpressure.h | 5 | ||||
| -rw-r--r-- | mm/memcontrol.c | 53 | ||||
| -rw-r--r-- | mm/vmpressure.c | 12 |
3 files changed, 30 insertions, 40 deletions
diff --git a/include/linux/vmpressure.h b/include/linux/vmpressure.h index b048365a7ed9..3e4535876d37 100644 --- a/include/linux/vmpressure.h +++ b/include/linux/vmpressure.h @@ -34,11 +34,10 @@ extern void vmpressure_init(struct vmpressure *vmpr); extern void vmpressure_cleanup(struct vmpressure *vmpr); extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg); extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr); -extern struct vmpressure *css_to_vmpressure(struct cgroup_subsys_state *css); -extern int vmpressure_register_event(struct cgroup_subsys_state *css, +extern int vmpressure_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args); -extern void vmpressure_unregister_event(struct cgroup_subsys_state *css, +extern void vmpressure_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd); #else static inline void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 3c93dcfd26da..42f2843af1a7 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -233,9 +233,9 @@ struct mem_cgroup_eventfd_list { */ struct cgroup_event { /* - * css which the event belongs to. + * memcg which the event belongs to. */ - struct cgroup_subsys_state *css; + struct mem_cgroup *memcg; /* * eventfd to signal userspace about the event. */ @@ -249,14 +249,14 @@ struct cgroup_event { * waiter for changes related to this event. Use eventfd_signal() * on eventfd to send notification to userspace. */ - int (*register_event)(struct cgroup_subsys_state *css, + int (*register_event)(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args); /* * unregister_event() callback will be called when userspace closes * the eventfd or on cgroup removing. This callback must be set, * if you want provide notification functionality. */ - void (*unregister_event)(struct cgroup_subsys_state *css, + void (*unregister_event)(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd); /* * All fields below needed to unregister event when @@ -535,11 +535,6 @@ struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr) return &container_of(vmpr, struct mem_cgroup, vmpressure)->css; } -struct vmpressure *css_to_vmpressure(struct cgroup_subsys_state *css) -{ - return &mem_cgroup_from_css(css)->vmpressure; -} - static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) { return (memcg == root_mem_cgroup); @@ -5682,10 +5677,9 @@ static void mem_cgroup_oom_notify(struct mem_cgroup *memcg) mem_cgroup_oom_notify_cb(iter); } -static int __mem_cgroup_usage_register_event(struct cgroup_subsys_state *css, +static int __mem_cgroup_usage_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args, enum res_type type) { - struct mem_cgroup *memcg = mem_cgroup_from_css(css); struct mem_cgroup_thresholds *thresholds; struct mem_cgroup_threshold_ary *new; u64 threshold, usage; @@ -5764,22 +5758,21 @@ unlock: return ret; } -static int mem_cgroup_usage_register_event(struct cgroup_subsys_state *css, +static int mem_cgroup_usage_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args) { - return __mem_cgroup_usage_register_event(css, eventfd, args, _MEM); + return __mem_cgroup_usage_register_event(memcg, eventfd, args, _MEM); } -static int memsw_cgroup_usage_register_event(struct cgroup_subsys_state *css, +static int memsw_cgroup_usage_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args) { - return __mem_cgroup_usage_register_event(css, eventfd, args, _MEMSWAP); + return __mem_cgroup_usage_register_event(memcg, eventfd, args, _MEMSWAP); } -static void __mem_cgroup_usage_unregister_event(struct cgroup_subsys_state *css, +static void __mem_cgroup_usage_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, enum res_type type) { - struct mem_cgroup *memcg = mem_cgroup_from_css(css); struct mem_cgroup_thresholds *thresholds; struct mem_cgroup_threshold_ary *new; u64 usage; @@ -5854,22 +5847,21 @@ unlock: mutex_unlock(&memcg->thresholds_lock); } -static void mem_cgroup_usage_unregister_event(struct cgroup_subsys_state *css, +static void mem_cgroup_usage_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd) { - return __mem_cgroup_usage_unregister_event(css, eventfd, _MEM); + return __mem_cgroup_usage_unregister_event(memcg, eventfd, _MEM); } -static void memsw_cgroup_usage_unregister_event(struct cgroup_subsys_state *css, +static void memsw_cgroup_usage_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd) { - return __mem_cgroup_usage_unregister_event(css, eventfd, _MEMSWAP); + return __mem_cgroup_usage_unregister_event(memcg, eventfd, _MEMSWAP); } -static int mem_cgroup_oom_register_event(struct cgroup_subsys_state *css, +static int mem_cgroup_oom_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args) { - struct mem_cgroup *memcg = mem_cgroup_from_css(css); struct mem_cgroup_eventfd_list *event; event = kmalloc(sizeof(*event), GFP_KERNEL); @@ -5889,10 +5881,9 @@ static int mem_cgroup_oom_register_event(struct cgroup_subsys_state *css, return 0; } -static void mem_cgroup_oom_unregister_event(struct cgroup_subsys_state *css, +static void mem_cgroup_oom_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd) { - struct mem_cgroup *memcg = mem_cgroup_from_css(css); struct mem_cgroup_eventfd_list *ev, *tmp; spin_lock(&memcg_oom_lock); @@ -6019,18 +6010,18 @@ static void cgroup_event_remove(struct work_struct *work) { struct cgroup_event *event = container_of(work, struct cgroup_event, remove); - struct cgroup_subsys_state *css = event->css; + struct mem_cgroup *memcg = event->memcg; remove_wait_queue(event->wqh, &event->wait); - event->unregister_event(css, event->eventfd); + event->unregister_event(memcg, event->eventfd); /* Notify userspace the event is going away. */ eventfd_signal(event->eventfd, 1); eventfd_ctx_put(event->eventfd); kfree(event); - css_put(css); + css_put(&memcg->css); } /* @@ -6043,7 +6034,7 @@ static int cgroup_event_wake(wait_queue_t *wait, unsigned mode, { struct cgroup_event *event = container_of(wait, struct cgroup_event, wait); - struct mem_cgroup *memcg = mem_cgroup_from_css(event->css); + struct mem_cgroup *memcg = event->memcg; unsigned long flags = (unsigned long)key; if (flags & POLLHUP) { @@ -6114,7 +6105,7 @@ static int cgroup_write_event_control(struct cgroup_subsys_state *css, if (!event) return -ENOMEM; - event->css = css; + event->memcg = memcg; INIT_LIST_HEAD(&event->list); init_poll_funcptr(&event->pt, cgroup_event_ptable_queue_proc); init_waitqueue_func_entry(&event->wait, cgroup_event_wake); @@ -6186,7 +6177,7 @@ static int cgroup_write_event_control(struct cgroup_subsys_state *css, if (ret) goto out_put_cfile; - ret = event->register_event(css, event->eventfd, buffer); + ret = event->register_event(memcg, event->eventfd, buffer); if (ret) goto out_put_css; diff --git a/mm/vmpressure.c b/mm/vmpressure.c index 0f25a996d150..196970a4541f 100644 --- a/mm/vmpressure.c +++ b/mm/vmpressure.c @@ -278,7 +278,7 @@ void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio) /** * vmpressure_register_event() - Bind vmpressure notifications to an eventfd - * @css: css that is interested in vmpressure notifications + * @memcg: memcg that is interested in vmpressure notifications * @eventfd: eventfd context to link notifications with * @args: event arguments (used to set up a pressure level threshold) * @@ -290,10 +290,10 @@ void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio) * * To be used as memcg event method. */ -int vmpressure_register_event(struct cgroup_subsys_state *css, +int vmpressure_register_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd, const char *args) { - struct vmpressure *vmpr = css_to_vmpressure(css); + struct vmpressure *vmpr = memcg_to_vmpressure(memcg); struct vmpressure_event *ev; int level; @@ -321,7 +321,7 @@ int vmpressure_register_event(struct cgroup_subsys_state *css, /** * vmpressure_unregister_event() - Unbind eventfd from vmpressure - * @css: css handle + * @memcg: memcg handle * @eventfd: eventfd context that was used to link vmpressure with the @cg * * This function does internal manipulations to detach the @eventfd from @@ -330,10 +330,10 @@ int vmpressure_register_event(struct cgroup_subsys_state *css, * * To be used as memcg event method. */ -void vmpressure_unregister_event(struct cgroup_subsys_state *css, +void vmpressure_unregister_event(struct mem_cgroup *memcg, struct eventfd_ctx *eventfd) { - struct vmpressure *vmpr = css_to_vmpressure(css); + struct vmpressure *vmpr = memcg_to_vmpressure(memcg); struct vmpressure_event *ev; mutex_lock(&vmpr->events_lock); |