drivers/hv/hv_balloon.c

585 static void post_status(struct hv_dynmem_device *dm);
1000 	struct hv_dynmem_device *dm = &dm_device;
1007 	pg_start = dm->ha_wrk.ha_page_range.finfo.start_page;
1008 	pfn_cnt = dm->ha_wrk.ha_page_range.finfo.page_cnt;
1010 	rg_start = dm->ha_wrk.ha_region_range.finfo.start_page;
1011 	rg_sz = dm->ha_wrk.ha_region_range.finfo.page_cnt;
1013 	if ((rg_start == 0) && (!dm->host_specified_ha_region)) {
1038 	dm->num_pages_added += resp.page_count;
1070 	dm->state = DM_INITIALIZED;
1072 	vmbus_sendpacket(dm->dev->channel, &resp,
1078 static void process_info(struct hv_dynmem_device *dm, struct dm_info_msg *msg)
1091 			dm->max_dynamic_page_count = *max_page_count;
1134 static unsigned long get_pages_committed(struct hv_dynmem_device *dm)
1137 		dm->num_pages_ballooned +
1138 		(dm->num_pages_added > dm->num_pages_onlined ?
1139 		 dm->num_pages_added - dm->num_pages_onlined : 0) +
1153 static void post_status(struct hv_dynmem_device *dm)
1184 	num_pages_committed = get_pages_committed(dm);
1187 			     vm_memory_committed(), dm->num_pages_ballooned,
1188 			     dm->num_pages_added, dm->num_pages_onlined);
1210 	vmbus_sendpacket(dm->dev->channel, &status,
1217 static void free_balloon_pages(struct hv_dynmem_device *dm,
1229 		dm->num_pages_ballooned--;
1236 static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
1260 		dm->num_pages_ballooned += alloc_unit;
1377 static void balloon_down(struct hv_dynmem_device *dm,
1384 	unsigned int prev_pages_ballooned = dm->num_pages_ballooned;
1387 		free_balloon_pages(dm, &range_array[i]);
1392 		prev_pages_ballooned - dm->num_pages_ballooned);
1407 	dm->state = DM_INITIALIZED;
1414 	struct hv_dynmem_device *dm = dm_dev;
1424 		post_status(dm);
1443 static void version_resp(struct hv_dynmem_device *dm,
1455 		complete(&dm->host_event);
1465 	if (dm->next_version == 0)
1472 	version_req.version.version = dm->next_version;
1473 	dm->version = version_req.version.version;
1481 		dm->next_version = DYNMEM_PROTOCOL_VERSION_WIN7;
1485 		dm->next_version = 0;
1489 	ret = vmbus_sendpacket(dm->dev->channel, &version_req,
1500 	dm->state = DM_INIT_ERROR;
1501 	complete(&dm->host_event);
1504 static void cap_resp(struct hv_dynmem_device *dm,
1509 		dm->state = DM_INIT_ERROR;
1511 	complete(&dm->host_event);
1521 	struct hv_dynmem_device *dm = hv_get_drvdata(dev);
1537 			version_resp(dm,
1542 			cap_resp(dm,
1552 			if (dm->state == DM_BALLOON_UP)
1555 			dm->state = DM_BALLOON_UP;
1566 			dm->state = DM_BALLOON_DOWN;
1567 			balloon_down(dm,
1572 			if (dm->state == DM_HOT_ADD)
1574 			dm->state = DM_HOT_ADD;
1581 				dm->host_specified_ha_region = false;
1583 				dm->ha_wrk.ha_page_range = *ha_pg_range;
1584 				dm->ha_wrk.ha_region_range.page_range = 0;
1591 				dm->host_specified_ha_region = true;
1594 				dm->ha_wrk.ha_page_range = *ha_pg_range;
1595 				dm->ha_wrk.ha_region_range = *ha_region;
1601 			process_info(dm, (struct dm_info_msg *)dm_msg);
1890 	struct hv_dynmem_device *dm = f->private;
1894 				DYNMEM_MAJOR_VERSION(dm->version),
1895 				DYNMEM_MINOR_VERSION(dm->version));
1906 	seq_printf(f, "%-22s: %u", "state", dm->state);
1907 	switch (dm->state) {
1935 	seq_printf(f, "%-22s: %u\n", "pages_added", dm->num_pages_added);
1938 	seq_printf(f, "%-22s: %u\n", "pages_onlined", dm->num_pages_onlined);
1941 	seq_printf(f, "%-22s: %u\n", "pages_ballooned", dm->num_pages_ballooned);
1944 				get_pages_committed(dm));
1947 				dm->max_dynamic_page_count);
2043 	struct hv_dynmem_device *dm = hv_get_drvdata(dev);
2047 	if (dm->num_pages_ballooned != 0)
2048 		pr_warn("Ballooned pages: %d\n", dm->num_pages_ballooned);
2050 	hv_balloon_debugfs_exit(dm);
2052 	cancel_work_sync(&dm->balloon_wrk.wrk);
2053 	cancel_work_sync(&dm->ha_wrk.wrk);
2055 	kthread_stop(dm->thread);
2072 	list_for_each_entry_safe(has, tmp, &dm->ha_region_list, list) {
2084 	struct hv_dynmem_device *dm = hv_get_drvdata(hv_dev);
2088 	cancel_work_sync(&dm->balloon_wrk.wrk);
2089 	cancel_work_sync(&dm->ha_wrk.wrk);
2091 	if (dm->thread) {
2092 		kthread_stop(dm->thread);
2093 		dm->thread = NULL;