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authorVitaly Kuznetsov <vkuznets@redhat.com>2017-10-29 12:21:13 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-04 12:04:25 +0100
commit034ebf552e0a3403eeb7e7f8a3a502fc0c70a24c (patch)
treeb7d8455fb7b161733de85415883e0f2e17c45ffe /drivers
parent09cdf8f87c15dbe9a3eeb6de04aaafd0cd922d6d (diff)
hyper-v: trace vmbus_negotiate_version()
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hv/connection.c3
-rw-r--r--drivers/hv/hv_trace.h26
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index b06a6b796819..05f413c4fe3b 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -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);
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index cd33a52ef27f..f06284d64a8c 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -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

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