From d6706e63367a9c783974db4b94cf8980d31c4cb2 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Sun, 29 Oct 2017 12:21:08 -0700 Subject: [PATCH] hyper-v: trace vmbus_request_offers() Add tracepoint to CHANNELMSG_REQUESTOFFERS sender. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/channel_mgmt.c | 4 +++- drivers/hv/hv_trace.h | 8 ++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index c33b7412f303..b27edff8796e 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -1224,9 +1224,11 @@ int vmbus_request_offers(void) msg->msgtype = CHANNELMSG_REQUESTOFFERS; - ret = vmbus_post_msg(msg, sizeof(struct vmbus_channel_message_header), true); + + trace_vmbus_request_offers(ret); + if (ret != 0) { pr_err("Unable to request offers - %d\n", ret); diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index 2a046547107f..566ac0f2fe56 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -122,6 +122,14 @@ TRACE_EVENT(vmbus_onversion_response, TP_printk("version_supported %d", __entry->ver) ); +TRACE_EVENT(vmbus_request_offers, + TP_PROTO(int ret), + TP_ARGS(ret), + TP_STRUCT__entry(__field(int, ret)), + TP_fast_assign(__entry->ret = ret), + TP_printk("sending ret %d", __entry->ret) + ); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE -- 2.30.2