[PATCH 11/16] hyper-v: trace vmbus_close_internal()

Vitaly Kuznetsov
2017-09-20T17:22:36Z

Add tracepoint to CHANNELMSG_CLOSECHANNEL sender.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
drivers/hv/channel.c | 2 ++
drivers/hv/hv_trace.h | 15 +++++++++++++++
2 files changed, 17 insertions(+)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 7b114b390871..9fe4c0624dbd 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -591,6 +591,8 @@ static int vmbus_close_internal(struct vmbus_channel *channel)
ret = vmbus_post_msg(msg, sizeof(struct vmbus_channel_close_channel),
true);

+ trace_vmbus_close_internal(msg, ret);
+
if (ret) {
pr_err("Close failed: close post msg return is %d\n", ret);
/*
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index aefbbb56e686..a8c4bcd1fc8e 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -155,6 +155,21 @@ TRACE_EVENT(vmbus_open,
)
);

+TRACE_EVENT(vmbus_close_internal,
+ TP_PROTO(const struct vmbus_channel_close_channel *msg, int ret),
+ TP_ARGS(msg, ret),
+ TP_STRUCT__entry(
+ __field(u32, child_relid)
+ __field(int, ret)
+ ),
+ TP_fast_assign(
+ __entry->child_relid = msg->child_relid;
+ __entry->ret = ret;
+ ),
+ TP_printk("sending child_relid 0x%x, ret %d", __entry->child_relid,
+ __entry->ret)