From 259cc665e9c08d054549a877c1b53b793de15753 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Sun, 29 Oct 2017 12:21:14 -0700 Subject: [PATCH] hyper-v: trace vmbus_release_relid() Add tracepoint to CHANNELMSG_RELID_RELEASED sender. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/channel_mgmt.c | 7 +++++-- drivers/hv/hv_trace.h | 16 ++++++++++++++++ 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index b27edff8796e..ec5454f3f4a6 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -373,12 +373,15 @@ static void percpu_channel_deq(void *arg) static void vmbus_release_relid(u32 relid) { struct vmbus_channel_relid_released msg; + int ret; memset(&msg, 0, sizeof(struct vmbus_channel_relid_released)); msg.child_relid = relid; msg.header.msgtype = CHANNELMSG_RELID_RELEASED; - vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released), - true); + ret = vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released), + true); + + trace_vmbus_release_relid(&msg, ret); } void hv_process_channel_removal(u32 relid) diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index f06284d64a8c..f0e437c3522f 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -258,6 +258,22 @@ TRACE_EVENT(vmbus_negotiate_version, ) ); +TRACE_EVENT(vmbus_release_relid, + TP_PROTO(const struct vmbus_channel_relid_released *msg, int ret), + TP_ARGS(msg, ret), + TP_STRUCT__entry( + __field(u32, child_relid) + __field(int, ret) + ), + TP_fast_assign( + __entry->child_relid = msg->child_relid; + __entry->ret = ret; + ), + TP_printk("sending child_relid 0x%x, ret %d", + __entry->child_relid, __entry->ret + ) + ); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE -- 2.30.2