From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Fri, 27 Feb 2015 19:25:52 +0000 (-0800)
Subject: Drivers: hv: vmbus: rename channel work queues
X-Git-Tag: firefly_0821_release~176^2~1906^2~124
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=bc63b6f634d91a0b2a7f3ba4f266e55fec369de3;p=firefly-linux-kernel-4.4.55.git

Drivers: hv: vmbus: rename channel work queues

All channel work queues are named 'hv_vmbus_ctl', this makes them
indistinguishable in ps output and makes it hard to link to the corresponding
vmbus device. Rename them to hv_vmbus_ctl/N and make vmbus device names match,
e.g. now vmbus_1 device is served by hv_vmbus_ctl/1 work queue.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 3736f71bdec5..ba4b25f0b213 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -139,19 +139,22 @@ EXPORT_SYMBOL_GPL(vmbus_prep_negotiate_resp);
  */
 static struct vmbus_channel *alloc_channel(void)
 {
+	static atomic_t chan_num = ATOMIC_INIT(0);
 	struct vmbus_channel *channel;
 
 	channel = kzalloc(sizeof(*channel), GFP_ATOMIC);
 	if (!channel)
 		return NULL;
 
+	channel->id = atomic_inc_return(&chan_num);
 	spin_lock_init(&channel->inbound_lock);
 	spin_lock_init(&channel->lock);
 
 	INIT_LIST_HEAD(&channel->sc_list);
 	INIT_LIST_HEAD(&channel->percpu_list);
 
-	channel->controlwq = create_workqueue("hv_vmbus_ctl");
+	channel->controlwq = alloc_workqueue("hv_vmbus_ctl/%d", WQ_MEM_RECLAIM,
+					     1, channel->id);
 	if (!channel->controlwq) {
 		kfree(channel);
 		return NULL;
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 3b18a665ef4c..e334ccc70582 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -875,10 +875,8 @@ int vmbus_device_register(struct hv_device *child_device_obj)
 {
 	int ret = 0;
 
-	static atomic_t device_num = ATOMIC_INIT(0);
-
-	dev_set_name(&child_device_obj->device, "vmbus_0_%d",
-		     atomic_inc_return(&device_num));
+	dev_set_name(&child_device_obj->device, "vmbus_%d",
+		     child_device_obj->channel->id);
 
 	child_device_obj->device.bus = &hv_bus;
 	child_device_obj->device.parent = &hv_acpi_dev->dev;
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 5a2ba674795e..26a32b771ee5 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -646,6 +646,9 @@ struct hv_input_signal_event_buffer {
 };
 
 struct vmbus_channel {
+	/* Unique channel id */
+	int id;
+
 	struct list_head listentry;
 
 	struct hv_device *device_obj;