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hyper-v: trace vmbus_negotiate_version()

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Add tracepoint to CHANNELMSG_INITIATE_CONTACT 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 12:21:13 -07:00 committed by Greg Kroah-Hartman
parent 09cdf8f87c
commit 034ebf552e
2 changed files with 29 additions and 0 deletions
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3
drivers/hv/connection.c
View File

@ -117,6 +117,9 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo,
ret = vmbus_post_msg(msg,
sizeof(struct vmbus_channel_initiate_contact),
true);
trace_vmbus_negotiate_version(msg, ret);
if (ret != 0) {
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_del(&msginfo->msglistentry);

26
drivers/hv/hv_trace.h
View File

@ -232,6 +232,32 @@ TRACE_EVENT(vmbus_teardown_gpadl,
)
);
TRACE_EVENT(vmbus_negotiate_version,
TP_PROTO(const struct vmbus_channel_initiate_contact *msg, int ret),
TP_ARGS(msg, ret),
TP_STRUCT__entry(
__field(u32, ver)
__field(u32, target_vcpu)
__field(int, ret)
__field(u64, int_page)
__field(u64, mon_page1)
__field(u64, mon_page2)
),
TP_fast_assign(
__entry->ver = msg->vmbus_version_requested;
__entry->target_vcpu = msg->target_vcpu;
__entry->int_page = msg->interrupt_page;
__entry->mon_page1 = msg->monitor_page1;
__entry->mon_page2 = msg->monitor_page2;
__entry->ret = ret;
),
TP_printk("sending vmbus_version_requested %d, target_vcpu 0x%x, "
"pages %llx:%llx:%llx, ret %d",
__entry->ver, __entry->target_vcpu, __entry->int_page,
__entry->mon_page1, __entry->mon_page2, __entry->ret
)
);
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE