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hyper-v: trace vmbus_open()

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Add tracepoint to CHANNELMSG_OPENCHANNEL sender.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vitaly Kuznetsov 2017-10-29 12:21:09 -07:00 committed by Greg Kroah-Hartman
parent d6706e6336
commit 9202d771ca
2 changed files with 29 additions and 0 deletions
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2
drivers/hv/channel.c
View file

@ -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;

27
drivers/hv/hv_trace.h
View file

@ -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