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50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
From 1f904a1aeb23a05a011f3eb028f81c99d7c7d2cc Mon Sep 17 00:00:00 2001
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From: Vitaly Kuznetsov <vkuznets@redhat.com>
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Date: Sun, 29 Oct 2017 12:21:01 -0700
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Subject: [PATCH 03/21] hyper-v: trace vmbus_on_message()
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Add tracepoint to vmbus_on_message() which is called when we start
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processing a blocking from work context.
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Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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(cherry picked from commit 716fa52fb474a36ddd3cbc981108f93610c973ef)
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---
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drivers/hv/channel_mgmt.c | 2 ++
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drivers/hv/hv_trace.h | 5 +++++
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2 files changed, 7 insertions(+)
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diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
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index 43eaf54736f4..2087402b8d01 100644
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--- a/drivers/hv/channel_mgmt.c
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+++ b/drivers/hv/channel_mgmt.c
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@@ -1244,6 +1244,8 @@ void vmbus_onmessage(void *context)
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hdr = (struct vmbus_channel_message_header *)msg->u.payload;
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size = msg->header.payload_size;
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+ trace_vmbus_on_message(hdr);
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+
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if (hdr->msgtype >= CHANNELMSG_COUNT) {
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pr_err("Received invalid channel message type %d size %d\n",
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hdr->msgtype, size);
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diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
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index 9c2772922c76..d432aba5df8a 100644
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--- a/drivers/hv/hv_trace.h
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+++ b/drivers/hv/hv_trace.h
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@@ -19,6 +19,11 @@ DEFINE_EVENT(vmbus_hdr_msg, vmbus_on_msg_dpc,
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TP_ARGS(hdr)
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);
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+DEFINE_EVENT(vmbus_hdr_msg, vmbus_on_message,
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+ TP_PROTO(const struct vmbus_channel_message_header *hdr),
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+ TP_ARGS(hdr)
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+);
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+
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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--
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2.21.0
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