[PATCH 13/16] hyper-v: trace vmbus_teardown_gpadl()

Vitaly Kuznetsov
2017-09-20T17:22:40Z

Add tracepoint to CHANNELMSG_GPADL_TEARDOWN sender.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
drivers/hv/channel.c | 2 ++
drivers/hv/hv_trace.h | 18 ++++++++++++++++++
2 files changed, 20 insertions(+)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index f51ddc89c85a..2422ef6f9164 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -519,6 +519,8 @@ int vmbus_teardown_gpadl(struct vmbus_channel *channel, u32 gpadl_handle)
ret = vmbus_post_msg(msg, sizeof(struct vmbus_channel_gpadl_teardown),
true);

+ trace_vmbus_teardown_gpadl(msg, ret);
+
if (ret)
goto post_msg_err;

diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index a77a1f3b83ed..98c2e9e9ad5e 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -212,6 +212,24 @@ TRACE_EVENT(vmbus_establish_gpadl_body,
)
);

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