linux-master/mm/page_reporting.c

61 __page_reporting_request(struct page_reporting_dev_info *prdev)
66 	state = atomic_read(&prdev->state);
74 	state = atomic_xchg(&prdev->state, PAGE_REPORTING_REQUESTED);
83 	schedule_delayed_work(&prdev->work, PAGE_REPORTING_DELAY);
86 /* notify prdev of free page reporting request */
89 	struct page_reporting_dev_info *prdev;
97 	prdev = rcu_dereference(pr_dev_info);
98 	if (likely(prdev))
99 		__page_reporting_request(prdev);
105 page_reporting_drain(struct page_reporting_dev_info *prdev,
146 page_reporting_cycle(struct page_reporting_dev_info *prdev, struct zone *zone,
194 			atomic_set(&prdev->state, PAGE_REPORTING_REQUESTED);
225 		err = prdev->report(prdev, sgl, PAGE_REPORTING_CAPACITY);
237 		page_reporting_drain(prdev, sgl, PAGE_REPORTING_CAPACITY, !err);
260 page_reporting_process_zone(struct page_reporting_dev_info *prdev,
285 			err = page_reporting_cycle(prdev, zone, order, mt,
296 		err = prdev->report(prdev, sgl, leftover);
300 		page_reporting_drain(prdev, sgl, leftover, !err);
310 	struct page_reporting_dev_info *prdev =
322 	atomic_set(&prdev->state, state);
332 		err = page_reporting_process_zone(prdev, sgl, zone);
344 	state = atomic_cmpxchg(&prdev->state, state, PAGE_REPORTING_IDLE);
346 		schedule_delayed_work(&prdev->work, PAGE_REPORTING_DELAY);
352 int page_reporting_register(struct page_reporting_dev_info *prdev)
373 		if (prdev->order > 0 && prdev->order <= MAX_PAGE_ORDER)
374 			page_reporting_order = prdev->order;
380 	atomic_set(&prdev->state, PAGE_REPORTING_IDLE);
381 	INIT_DELAYED_WORK(&prdev->work, &page_reporting_process);
384 	__page_reporting_request(prdev);
387 	rcu_assign_pointer(pr_dev_info, prdev);
401 void page_reporting_unregister(struct page_reporting_dev_info *prdev)
405 	if (prdev == rcu_dereference_protected(pr_dev_info,
412 		cancel_delayed_work_sync(&prdev->work);