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acc059e6c8
Note, we skip 4.14.45 because 4.14.46 only has 3 patches in it which unbreak 'perf' compilation. Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
69 lines
2.1 KiB
Diff
69 lines
2.1 KiB
Diff
From 31062dfba0a0a70855ac6cd545ac58f33521f7d6 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 12:21:14 -0700
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Subject: [PATCH 16/21] hyper-v: trace vmbus_release_relid()
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Add tracepoint to CHANNELMSG_RELID_RELEASED 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 259cc665e9c08d054549a877c1b53b793de15753)
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---
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drivers/hv/channel_mgmt.c | 7 +++++--
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drivers/hv/hv_trace.h | 16 ++++++++++++++++
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2 files changed, 21 insertions(+), 2 deletions(-)
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diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
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index 4c36029595e7..181f00c60be0 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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@@ -374,12 +374,15 @@ static void percpu_channel_deq(void *arg)
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static void vmbus_release_relid(u32 relid)
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{
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struct vmbus_channel_relid_released msg;
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+ int ret;
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memset(&msg, 0, sizeof(struct vmbus_channel_relid_released));
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msg.child_relid = relid;
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msg.header.msgtype = CHANNELMSG_RELID_RELEASED;
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- vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released),
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- true);
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+ ret = vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released),
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+ true);
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+
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+ trace_vmbus_release_relid(&msg, ret);
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}
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void hv_process_channel_removal(u32 relid)
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diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
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index f06284d64a8c..f0e437c3522f 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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@@ -258,6 +258,22 @@ TRACE_EVENT(vmbus_negotiate_version,
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)
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);
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+TRACE_EVENT(vmbus_release_relid,
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+ TP_PROTO(const struct vmbus_channel_relid_released *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(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->ret = ret;
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+ ),
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+ TP_printk("sending child_relid 0x%x, ret %d",
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+ __entry->child_relid, __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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