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hyper-v: trace vmbus_onversion_response()

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Add tracepoint to CHANNELMSG_VERSION_RESPONSE handler.

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 12:21:07 -07:00 committed by Greg Kroah-Hartman
parent 602a8c525c
commit c7924fb07a
2 changed files with 14 additions and 0 deletions
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3
drivers/hv/channel_mgmt.c
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@ -1127,6 +1127,9 @@ static void vmbus_onversion_response(
unsigned long flags;
version_response = (struct vmbus_channel_version_response *)hdr;
trace_vmbus_onversion_response(version_response);
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_for_each_entry(msginfo, &vmbus_connection.chn_msg_list,

11
drivers/hv/hv_trace.h
View file

@ -111,6 +111,17 @@ TRACE_EVENT(vmbus_ongpadl_torndown,
TP_printk("gpadl 0x%x", __entry->gpadl)
);
TRACE_EVENT(vmbus_onversion_response,
TP_PROTO(const struct vmbus_channel_version_response *response),
TP_ARGS(response),
TP_STRUCT__entry(
__field(u8, ver)
),
TP_fast_assign(__entry->ver = response->version_supported;
),
TP_printk("version_supported %d", __entry->ver)
);
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE