Author: delphij Date: Tue Dec 29 07:54:55 2015 New Revision: 292859 URL: https://svnweb.freebsd.org/changeset/base/292859
Log: hyperv: vmbus: remove the per-channel control_work_queue Now vmbus_channel_on_offer() -> vmbus_channel_process_offer() can safely run on the global hv_vmbus_g_connection.work_queue now. We remove the per-channel control_work_queue to achieve the proper serialization of the message handling. I removed the bogus TODO in vmbus_channel_on_offer(): a vmbus offer can only come from the parent partition, i.e., the host. PR: kern/205156 Submitted by: Dexuan Cui <decui microsoft com> Reviewed by: Howard Su <howard0su gmail com>, delphij MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D4597 Modified: head/sys/dev/hyperv/include/hyperv.h head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Modified: head/sys/dev/hyperv/include/hyperv.h ============================================================================== --- head/sys/dev/hyperv/include/hyperv.h Tue Dec 29 03:31:06 2015 (r292858) +++ head/sys/dev/hyperv/include/hyperv.h Tue Dec 29 07:54:55 2015 (r292859) @@ -759,7 +759,6 @@ typedef struct hv_vmbus_channel { hv_vmbus_ring_buffer_info inbound; struct mtx inbound_lock; - hv_vmbus_handle control_work_queue; hv_vmbus_pfn_channel_callback on_channel_callback; void* channel_callback_context; Modified: head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c ============================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Tue Dec 29 03:31:06 2015 (r292858) +++ head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c Tue Dec 29 07:54:55 2015 (r292859) @@ -49,7 +49,6 @@ static void vmbus_channel_on_gpadl_creat static void vmbus_channel_on_gpadl_torndown(hv_vmbus_channel_msg_header* hdr); static void vmbus_channel_on_offers_delivered(hv_vmbus_channel_msg_header* hdr); static void vmbus_channel_on_version_response(hv_vmbus_channel_msg_header* hdr); -static void vmbus_channel_process_offer(void *context); /** * Channel message dispatch table @@ -206,15 +205,6 @@ hv_queue_work_item( return (taskqueue_enqueue(wq->queue, &w->work)); } -/** - * @brief Rescind the offer by initiating a device removal - */ -static void -vmbus_channel_process_rescind_offer(void *context) -{ - hv_vmbus_channel* channel = (hv_vmbus_channel*) context; - hv_vmbus_child_device_unregister(channel->device); -} /** * @brief Allocate and initialize a vmbus channel object @@ -237,14 +227,6 @@ hv_vmbus_allocate_channel(void) TAILQ_INIT(&channel->sc_list_anchor); - channel->control_work_queue = hv_work_queue_create("control"); - - if (channel->control_work_queue == NULL) { - mtx_destroy(&channel->inbound_lock); - free(channel, M_DEVBUF); - return (NULL); - } - return (channel); } @@ -255,7 +237,6 @@ static inline void ReleaseVmbusChannel(void *context) { hv_vmbus_channel* channel = (hv_vmbus_channel*) context; - hv_work_queue_close(channel->control_work_queue); free(channel, M_DEVBUF); } @@ -281,14 +262,12 @@ hv_vmbus_free_vmbus_channel(hv_vmbus_cha * associated with this offer */ static void -vmbus_channel_process_offer(void *context) +vmbus_channel_process_offer(hv_vmbus_channel *new_channel) { - hv_vmbus_channel* new_channel; boolean_t f_new; hv_vmbus_channel* channel; int ret; - new_channel = (hv_vmbus_channel*) context; f_new = TRUE; channel = NULL; @@ -521,11 +500,7 @@ vmbus_channel_on_offer(hv_vmbus_channel_ new_channel->monitor_group = (uint8_t) offer->monitor_id / 32; new_channel->monitor_bit = (uint8_t) offer->monitor_id % 32; - /* TODO: Make sure the offer comes from our parent partition */ - hv_queue_work_item( - new_channel->control_work_queue, - vmbus_channel_process_offer, - new_channel); + vmbus_channel_process_offer(new_channel); } /** @@ -546,8 +521,7 @@ vmbus_channel_on_offer_rescind(hv_vmbus_ if (channel == NULL) return; - hv_queue_work_item(channel->control_work_queue, - vmbus_channel_process_rescind_offer, channel); + hv_vmbus_child_device_unregister(channel->device); } /** _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
