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hyper-v: trace vmbus_send_tl_connect_request() 

Add tracepoint to CHANNELMSG_TL_CONNECT_REQUEST sender.

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>
This commit is contained in:
Vitaly Kuznetsov 2017-10-29 12:21:15 -07:00 committed by Greg Kroah-Hartman
parent 259cc665e9
commit 98f31a0050
2 changed files with 26 additions and 1 deletions
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7
drivers/hv/channel.c
View File

@ -236,13 +236,18 @@ int vmbus_send_tl_connect_request(const uuid_le *shv_guest_servie_id,
const uuid_le *shv_host_servie_id)
{
struct vmbus_channel_tl_connect_request conn_msg;
int ret;
memset(&conn_msg, 0, sizeof(conn_msg));
conn_msg.header.msgtype = CHANNELMSG_TL_CONNECT_REQUEST;
conn_msg.guest_endpoint_id = *shv_guest_servie_id;
conn_msg.host_service_id = *shv_host_servie_id;
return vmbus_post_msg(&conn_msg, sizeof(conn_msg), true);
ret = vmbus_post_msg(&conn_msg, sizeof(conn_msg), true);
trace_vmbus_send_tl_connect_request(&conn_msg, ret);
return ret;
}
EXPORT_SYMBOL_GPL(vmbus_send_tl_connect_request);

20
drivers/hv/hv_trace.h
View File

@ -274,6 +274,26 @@ TRACE_EVENT(vmbus_release_relid,
)
);
TRACE_EVENT(vmbus_send_tl_connect_request,
TP_PROTO(const struct vmbus_channel_tl_connect_request *msg,
int ret),
TP_ARGS(msg, ret),
TP_STRUCT__entry(
__array(char, guest_id, 16)
__array(char, host_id, 16)
__field(int, ret)
),
TP_fast_assign(
memcpy(__entry->guest_id, &msg->guest_endpoint_id.b, 16);
memcpy(__entry->host_id, &msg->host_service_id.b, 16);
__entry->ret = ret;
),
TP_printk("sending guest_endpoint_id %pUl, host_service_id %pUl, "
"ret %d",
__entry->guest_id, __entry->host_id, __entry->ret
)
);
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE