diff options
Diffstat (limited to 'drivers/hv/hv_util.c')
| -rw-r--r-- | drivers/hv/hv_util.c | 46 |
1 files changed, 33 insertions, 13 deletions
diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index a0667de7a04c..1d4cbd8e8261 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -49,6 +49,16 @@ static struct hv_util_service util_kvp = { .util_deinit = hv_kvp_deinit, }; +static void perform_shutdown(struct work_struct *dummy) +{ + orderly_poweroff(true); +} + +/* + * Perform the shutdown operation in a thread context. + */ +static DECLARE_WORK(shutdown_work, perform_shutdown); + static void shutdown_onchannelcallback(void *context) { struct vmbus_channel *channel = context; @@ -106,7 +116,7 @@ static void shutdown_onchannelcallback(void *context) } if (execute_shutdown == true) - orderly_poweroff(true); + schedule_work(&shutdown_work); } /* @@ -274,6 +284,16 @@ static int util_probe(struct hv_device *dev, } } + /* + * The set of services managed by the util driver are not performance + * critical and do not need batched reading. Furthermore, some services + * such as KVP can only handle one message from the host at a time. + * Turn off batched reading for all util drivers before we open the + * channel. + */ + + set_channel_read_state(dev->channel, false); + ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0, srv->util_cb, dev->channel); if (ret) @@ -304,21 +324,21 @@ static int util_remove(struct hv_device *dev) static const struct hv_vmbus_device_id id_table[] = { /* Shutdown guid */ - { VMBUS_DEVICE(0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49, - 0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB) - .driver_data = (unsigned long)&util_shutdown }, + { HV_SHUTDOWN_GUID, + .driver_data = (unsigned long)&util_shutdown + }, /* Time synch guid */ - { VMBUS_DEVICE(0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, - 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf) - .driver_data = (unsigned long)&util_timesynch }, + { HV_TS_GUID, + .driver_data = (unsigned long)&util_timesynch + }, /* Heartbeat guid */ - { VMBUS_DEVICE(0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, - 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d) - .driver_data = (unsigned long)&util_heartbeat }, + { HV_HEART_BEAT_GUID, + .driver_data = (unsigned long)&util_heartbeat + }, /* KVP guid */ - { VMBUS_DEVICE(0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, - 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6) - .driver_data = (unsigned long)&util_kvp }, + { HV_KVP_GUID, + .driver_data = (unsigned long)&util_kvp + }, { }, }; |