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Subject[PATCH v2 10/16] hyper-v: trace vmbus_open()
Date
Add tracepoint to CHANNELMSG_OPENCHANNEL sender.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
drivers/hv/channel.c | 2 ++
drivers/hv/hv_trace.h | 27 +++++++++++++++++++++++++++
2 files changed, 29 insertions(+)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index efd5db743319..82cb57e2d6bd 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -185,6 +185,8 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
ret = vmbus_post_msg(open_msg,
sizeof(struct vmbus_channel_open_channel), true);

+ trace_vmbus_open(open_msg, ret);
+
if (ret != 0) {
err = ret;
goto error_clean_msglist;
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index 7212d8898775..01acbbf7badf 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -130,6 +130,33 @@ TRACE_EVENT(vmbus_request_offers,
TP_printk("sending ret %d", __entry->ret)
);

+TRACE_EVENT(vmbus_open,
+ TP_PROTO(const struct vmbus_channel_open_channel *msg, int ret),
+ TP_ARGS(msg, ret),
+ TP_STRUCT__entry(
+ __field(u32, child_relid)
+ __field(u32, openid)
+ __field(u32, gpadlhandle)
+ __field(u32, target_vp)
+ __field(u32, offset)
+ __field(int, ret)
+ ),
+ TP_fast_assign(
+ __entry->child_relid = msg->child_relid;
+ __entry->openid = msg->openid;
+ __entry->gpadlhandle = msg->ringbuffer_gpadlhandle;
+ __entry->target_vp = msg->target_vp;
+ __entry->offset = msg->downstream_ringbuffer_pageoffset;
+ __entry->ret = ret;
+ ),
+ TP_printk("sending child_relid 0x%x, openid %d, "
+ "gpadlhandle 0x%x, target_vp 0x%x, offset 0x%x, ret %d",
+ __entry->child_relid, __entry->openid,
+ __entry->gpadlhandle, __entry->target_vp,
+ __entry->offset, __entry->ret
+ )
+ );
+
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
--
2.13.5
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