From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: devel@linuxdriverproject.org
Cc: linux-kernel@vger.kernel.org,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Steven Rostedt <rostedt@goodmis.org>,
Dexuan Cui <decui@microsoft.com>
Subject: [PATCH 02/16] hyper-v: trace vmbus_on_message()
Date: Wed, 20 Sep 2017 19:21:53 +0200 [thread overview]
Message-ID: <20170920172207.12622-3-vkuznets@redhat.com> (raw)
In-Reply-To: <20170920172207.12622-1-vkuznets@redhat.com>
Add tracepoint to vmbus_on_message() which is called when we start
processing a blocking from work context.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
drivers/hv/channel_mgmt.c | 2 ++
drivers/hv/hv_trace.h | 8 ++++++++
2 files changed, 10 insertions(+)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 060df71c2e8b..ddeebba8971e 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -1170,6 +1170,8 @@ void vmbus_onmessage(void *context)
hdr = (struct vmbus_channel_message_header *)msg->u.payload;
size = msg->header.payload_size;
+ trace_vmbus_on_message(hdr);
+
if (hdr->msgtype >= CHANNELMSG_COUNT) {
pr_err("Received invalid channel message type %d size %d\n",
hdr->msgtype, size);
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index 9a29ef55477d..72911dfc9682 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -14,6 +14,14 @@ TRACE_EVENT(vmbus_on_msg_dpc,
TP_printk("message %u received", __entry->msgtype)
);
+TRACE_EVENT(vmbus_on_message,
+ TP_PROTO(const struct vmbus_channel_message_header *hdr),
+ TP_ARGS(hdr),
+ TP_STRUCT__entry(__field(unsigned int, msgtype)),
+ TP_fast_assign(__entry->msgtype = hdr->msgtype),
+ TP_printk("processing message %u", __entry->msgtype)
+ );
+
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
--
2.13.5
next prev parent reply other threads:[~2017-09-20 17:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 17:21 [PATCH 00/16] Hyper-V: add tracing to VMBus module and trace all messages Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 01/16] hyper-v: trace vmbus_on_msg_dpc() Vitaly Kuznetsov
2017-09-20 17:21 ` Vitaly Kuznetsov [this message]
2017-09-20 17:55 ` [PATCH 02/16] hyper-v: trace vmbus_on_message() Steven Rostedt
2017-09-21 8:17 ` Vitaly Kuznetsov
2017-10-03 16:54 ` Stephen Hemminger
2017-10-04 14:09 ` Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 03/16] hyper-v: trace vmbus_onoffer() Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 04/16] hyper-v: trace vmbus_onoffer_rescind() Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 05/16] hyper-v: trace vmbus_onopen_result() Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 06/16] hyper-v: trace vmbus_ongpadl_created() Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 07/16] hyper-v: trace vmbus_ongpadl_torndown() Vitaly Kuznetsov
2017-09-20 17:21 ` [PATCH 08/16] hyper-v: trace vmbus_onversion_response() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 09/16] hyper-v: trace vmbus_request_offers() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 10/16] hyper-v: trace vmbus_open() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 11/16] hyper-v: trace vmbus_close_internal() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 12/16] hyper-v: trace vmbus_establish_gpadl() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 13/16] hyper-v: trace vmbus_teardown_gpadl() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 14/16] hyper-v: trace vmbus_negotiate_version() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 15/16] hyper-v: trace vmbus_release_relid() Vitaly Kuznetsov
2017-09-20 17:22 ` [PATCH 16/16] hyper-v: trace vmbus_send_tl_connect_request() Vitaly Kuznetsov
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