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authorVitaly Kuznetsov <vkuznets@redhat.com>2017-10-29 12:21:00 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-04 12:04:24 +0100
commitc9fe0f8fa4136c2451dcc012e48fbf4470d6b592 (patch)
tree5e8ce5d0a106d970b061041158eba858af9a35e6 /drivers/hv/vmbus_drv.c
parent32946cc2d5686d320aab9fb162d8949c767f7519 (diff)
hyper-v: trace vmbus_on_msg_dpc()
Add tracing subsystem to Hyper-V VMBus module and add tracepoint to vmbus_on_msg_dpc() which is called when we receive a message from host. 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>
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
-rw-r--r--drivers/hv/vmbus_drv.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 8fe13cd76acf..8f9293a87c6b 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -835,6 +835,8 @@ void vmbus_on_msg_dpc(unsigned long data)
hdr = (struct vmbus_channel_message_header *)msg->u.payload;
+ trace_vmbus_on_msg_dpc(hdr);
+
if (hdr->msgtype >= CHANNELMSG_COUNT) {
WARN_ONCE(1, "unknown msgtype=%d\n", hdr->msgtype);
goto msg_handled;