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71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
From aa1a536cd395c0f186f305f0d963c2906ca1eef6 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 12:21:13 -0700
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Subject: [PATCH 15/21] hyper-v: trace vmbus_negotiate_version()
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Add tracepoint to CHANNELMSG_INITIATE_CONTACT 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 034ebf552e0a3403eeb7e7f8a3a502fc0c70a24c)
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---
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drivers/hv/connection.c | 3 +++
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drivers/hv/hv_trace.h | 26 ++++++++++++++++++++++++++
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2 files changed, 29 insertions(+)
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diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
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index f41901f80b64..5e36f86d0b0c 100644
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--- a/drivers/hv/connection.c
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+++ b/drivers/hv/connection.c
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@@ -117,6 +117,9 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo,
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ret = vmbus_post_msg(msg,
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sizeof(struct vmbus_channel_initiate_contact),
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true);
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+
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+ trace_vmbus_negotiate_version(msg, ret);
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+
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if (ret != 0) {
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spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
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list_del(&msginfo->msglistentry);
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diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
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index cd33a52ef27f..f06284d64a8c 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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@@ -232,6 +232,32 @@ TRACE_EVENT(vmbus_teardown_gpadl,
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)
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);
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+TRACE_EVENT(vmbus_negotiate_version,
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+ TP_PROTO(const struct vmbus_channel_initiate_contact *msg, int ret),
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+ TP_ARGS(msg, ret),
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+ TP_STRUCT__entry(
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+ __field(u32, ver)
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+ __field(u32, target_vcpu)
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+ __field(int, ret)
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+ __field(u64, int_page)
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+ __field(u64, mon_page1)
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+ __field(u64, mon_page2)
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+ ),
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+ TP_fast_assign(
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+ __entry->ver = msg->vmbus_version_requested;
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+ __entry->target_vcpu = msg->target_vcpu;
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+ __entry->int_page = msg->interrupt_page;
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+ __entry->mon_page1 = msg->monitor_page1;
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+ __entry->mon_page2 = msg->monitor_page2;
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+ __entry->ret = ret;
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+ ),
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+ TP_printk("sending vmbus_version_requested %d, target_vcpu 0x%x, "
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+ "pages %llx:%llx:%llx, ret %d",
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+ __entry->ver, __entry->target_vcpu, __entry->int_page,
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+ __entry->mon_page1, __entry->mon_page2, __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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