diff options
| -rw-r--r-- | drivers/hv/hv_util.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index 32d96af67522..64fbf4ac80f9 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -25,7 +25,9 @@ #define SD_MAJOR 3 #define SD_MINOR 0 #define SD_MINOR_1 1 +#define SD_MINOR_2 2 #define SD_VERSION_3_1 (SD_MAJOR << 16 | SD_MINOR_1) +#define SD_VERSION_3_2 (SD_MAJOR << 16 | SD_MINOR_2) #define SD_VERSION (SD_MAJOR << 16 | SD_MINOR) #define SD_MAJOR_1 1 @@ -52,8 +54,9 @@ static int sd_srv_version; static int ts_srv_version; static int hb_srv_version; -#define SD_VER_COUNT 3 +#define SD_VER_COUNT 4 static const int sd_versions[] = { + SD_VERSION_3_2, SD_VERSION_3_1, SD_VERSION, SD_VERSION_1 @@ -78,9 +81,45 @@ static const int fw_versions[] = { UTIL_WS2K8_FW_VERSION }; +/* + * Send the "hibernate" udev event in a thread context. + */ +struct hibernate_work_context { + struct work_struct work; + struct hv_device *dev; +}; + +static struct hibernate_work_context hibernate_context; +static bool hibernation_supported; + +static void send_hibernate_uevent(struct work_struct *work) +{ + char *uevent_env[2] = { "EVENT=hibernate", NULL }; + struct hibernate_work_context *ctx; + + ctx = container_of(work, struct hibernate_work_context, work); + + kobject_uevent_env(&ctx->dev->device.kobj, KOBJ_CHANGE, uevent_env); + + pr_info("Sent hibernation uevent\n"); +} + +static int hv_shutdown_init(struct hv_util_service *srv) +{ + struct vmbus_channel *channel = srv->channel; + + INIT_WORK(&hibernate_context.work, send_hibernate_uevent); + hibernate_context.dev = channel->device_obj; + + hibernation_supported = hv_is_hibernation_supported(); + + return 0; +} + static void shutdown_onchannelcallback(void *context); static struct hv_util_service util_shutdown = { .util_cb = shutdown_onchannelcallback, + .util_init = hv_shutdown_init, }; static int hv_timesync_init(struct hv_util_service *srv); @@ -191,6 +230,14 @@ static void shutdown_onchannelcallback(void *context) pr_info("Restart request received -" " graceful restart initiated\n"); break; + case 4: + case 5: + pr_info("Hibernation request received\n"); + icmsghdrp->status = hibernation_supported ? + HV_S_OK : HV_E_FAIL; + if (hibernation_supported) + work = &hibernate_context.work; + break; default: icmsghdrp->status = HV_E_FAIL; pr_info("Shutdown request received -" |