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71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
From 4ba9ef3a50587ec067fca7ea4ce7eb739bcd72ce 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 12:21:09 -0700
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Subject: [PATCH 11/21] hyper-v: trace vmbus_open()
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Add tracepoint to CHANNELMSG_OPENCHANNEL sender.
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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 9202d771ca37514bfbc2c3a8fdcb018f40a6bd8a)
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---
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drivers/hv/channel.c | 2 ++
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drivers/hv/hv_trace.h | 27 +++++++++++++++++++++++++++
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2 files changed, 29 insertions(+)
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diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
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index 05964347008d..b562a7fb4c42 100644
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--- a/drivers/hv/channel.c
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+++ b/drivers/hv/channel.c
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@@ -185,6 +185,8 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
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ret = vmbus_post_msg(open_msg,
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sizeof(struct vmbus_channel_open_channel), true);
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+ trace_vmbus_open(open_msg, ret);
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+
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if (ret != 0) {
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err = ret;
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goto error_clean_msglist;
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diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
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index 566ac0f2fe56..38fedb803bd8 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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@@ -130,6 +130,33 @@ TRACE_EVENT(vmbus_request_offers,
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TP_printk("sending ret %d", __entry->ret)
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);
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+TRACE_EVENT(vmbus_open,
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+ TP_PROTO(const struct vmbus_channel_open_channel *msg, int ret),
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+ TP_ARGS(msg, ret),
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+ TP_STRUCT__entry(
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+ __field(u32, child_relid)
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+ __field(u32, openid)
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+ __field(u32, gpadlhandle)
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+ __field(u32, target_vp)
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+ __field(u32, offset)
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+ __field(int, ret)
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+ ),
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+ TP_fast_assign(
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+ __entry->child_relid = msg->child_relid;
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+ __entry->openid = msg->openid;
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+ __entry->gpadlhandle = msg->ringbuffer_gpadlhandle;
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+ __entry->target_vp = msg->target_vp;
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+ __entry->offset = msg->downstream_ringbuffer_pageoffset;
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+ __entry->ret = ret;
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+ ),
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+ TP_printk("sending child_relid 0x%x, openid %d, "
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+ "gpadlhandle 0x%x, target_vp 0x%x, offset 0x%x, ret %d",
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+ __entry->child_relid, __entry->openid,
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+ __entry->gpadlhandle, __entry->target_vp,
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+ __entry->offset, __entry->ret
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+ )
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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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2.16.0
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