diff options
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index eaf1a10b0245..f7f6b9144b07 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -887,6 +887,18 @@ msg_handled: /* + * Direct callback for channels using other deferred processing + */ +static void vmbus_channel_isr(struct vmbus_channel *channel) +{ + void (*callback_fn)(void *); + + callback_fn = READ_ONCE(channel->onchannel_callback); + if (likely(callback_fn != NULL)) + (*callback_fn)(channel->channel_callback_context); +} + +/* * Schedule all channels with events pending */ static void vmbus_chan_sched(struct hv_per_cpu_context *hv_cpu) @@ -927,9 +939,19 @@ static void vmbus_chan_sched(struct hv_per_cpu_context *hv_cpu) /* Find channel based on relid */ list_for_each_entry(channel, &hv_cpu->chan_list, percpu_list) { - if (channel->offermsg.child_relid == relid) { - tasklet_schedule(&channel->callback_event); + if (channel->offermsg.child_relid != relid) + continue; + + switch (channel->callback_mode) { + case HV_CALL_ISR: + vmbus_channel_isr(channel); break; + + case HV_CALL_BATCHED: + hv_begin_read(&channel->inbound); + /* fallthrough */ + case HV_CALL_DIRECT: + tasklet_schedule(&channel->callback_event); } } } |