Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1742120

[PATCH v2 02/16] hyper-v: trace vmbus_on_message()

Show all headers | View raw

Add tracepoint to vmbus_on_message() which is called when we start
processing a blocking from work context.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 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

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v2 00/16] Hyper-V: add tracing to VMBus module and trace all messages Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 13/16] hyper-v: trace vmbus_teardown_gpadl() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 05/16] hyper-v: trace vmbus_onopen_result() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 15/16] hyper-v: trace vmbus_release_relid() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 12/16] hyper-v: trace vmbus_establish_gpadl() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 02/16] hyper-v: trace vmbus_on_message() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 08/16] hyper-v: trace vmbus_onversion_response() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 04/16] hyper-v: trace vmbus_onoffer_rescind() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 11/16] hyper-v: trace vmbus_close_internal() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 06/16] hyper-v: trace vmbus_ongpadl_created() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200

csiph-web