Add tracepoint to vmbus_on_message() which is called when we start processing a blocking from work context. Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> --- drivers/hv/channel_mgmt.c | 2 ++ drivers/hv/hv_trace.h | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 060df71c2e8b..ddeebba8971e 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -1170,6 +1170,8 @@ void vmbus_onmessage(void *context) hdr = (struct vmbus_channel_message_header *)msg->u.payload; size = msg->header.payload_size; + trace_vmbus_on_message(hdr); + if (hdr->msgtype >= CHANNELMSG_COUNT) { pr_err("Received invalid channel message type %d size %d\n", hdr->msgtype, size); diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index 82432e351724..4aac780099b4 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -19,6 +19,11 @@ DEFINE_EVENT_PRINT(vmbus_hdr_msg, vmbus_on_msg_dpc, TP_ARGS(hdr), TP_printk("message %u received", __entry->msgtype)); +DEFINE_EVENT_PRINT(vmbus_hdr_msg, vmbus_on_message, + TP_PROTO(const struct vmbus_channel_message_header *hdr), + TP_ARGS(hdr), + TP_printk("processing message %u", __entry->msgtype)); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE -- 2.13.5 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel