[PATCH v2 04/16] hyper-v: trace vmbus_onoffer_rescind()

[Vitaly Kuznetsov]

Add tracepoint to CHANNELMSG_RESCIND_CHANNELOFFER handler.

Signed-off-by: Vitaly Kuznetsov <vkuzn...@redhat.com>
---
 drivers/hv/channel_mgmt.c | 2 ++
 drivers/hv/hv_trace.h     | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 290ea25ce409..563653a02ab6 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -841,6 +841,8 @@ static void vmbus_onoffer_rescind(struct 
vmbus_channel_message_header *hdr)
 
        rescind = (struct vmbus_channel_rescind_offer *)hdr;
 
+       trace_vmbus_onoffer_rescind(rescind);
+
        /*
         * The offer msg and the corresponding rescind msg
         * from the host are guranteed to be ordered -
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index d38f8ed272ca..8bb8806a16f7 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -61,6 +61,14 @@ TRACE_EVENT(vmbus_onoffer,
                    )
        );
 
+TRACE_EVENT(vmbus_onoffer_rescind,
+           TP_PROTO(const struct vmbus_channel_rescind_offer *offer),
+           TP_ARGS(offer),
+           TP_STRUCT__entry(__field(u32, child_relid)),
+           TP_fast_assign(__entry->child_relid = offer->child_relid),
+           TP_printk("child_relid 0x%x", __entry->child_relid)
+       );
+
 #undef TRACE_INCLUDE_PATH
 #define TRACE_INCLUDE_PATH .
 #undef TRACE_INCLUDE_FILE
-- 
2.13.5