From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751983AbdITRZw (ORCPT ); Wed, 20 Sep 2017 13:25:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47428 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751693AbdITRWP (ORCPT ); Wed, 20 Sep 2017 13:22:15 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com EC65BC00DBBD Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=vkuznets@redhat.com From: Vitaly Kuznetsov To: devel@linuxdriverproject.org Cc: linux-kernel@vger.kernel.org, "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Steven Rostedt , Dexuan Cui Subject: [PATCH 02/16] hyper-v: trace vmbus_on_message() Date: Wed, 20 Sep 2017 19:21:53 +0200 Message-Id: <20170920172207.12622-3-vkuznets@redhat.com> In-Reply-To: <20170920172207.12622-1-vkuznets@redhat.com> References: <20170920172207.12622-1-vkuznets@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 20 Sep 2017 17:22:15 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add tracepoint to vmbus_on_message() which is called when we start processing a blocking from work context. Signed-off-by: Vitaly Kuznetsov --- drivers/hv/channel_mgmt.c | 2 ++ drivers/hv/hv_trace.h | 8 ++++++++ 2 files changed, 10 insertions(+) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 060df71c2e8b..ddeebba8971e 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -1170,6 +1170,8 @@ void vmbus_onmessage(void *context) hdr = (struct vmbus_channel_message_header *)msg->u.payload; size = msg->header.payload_size; + trace_vmbus_on_message(hdr); + if (hdr->msgtype >= CHANNELMSG_COUNT) { pr_err("Received invalid channel message type %d size %d\n", hdr->msgtype, size); diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index 9a29ef55477d..72911dfc9682 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -14,6 +14,14 @@ TRACE_EVENT(vmbus_on_msg_dpc, TP_printk("message %u received", __entry->msgtype) ); +TRACE_EVENT(vmbus_on_message, + TP_PROTO(const struct vmbus_channel_message_header *hdr), + TP_ARGS(hdr), + TP_STRUCT__entry(__field(unsigned int, msgtype)), + TP_fast_assign(__entry->msgtype = hdr->msgtype), + TP_printk("processing message %u", __entry->msgtype) + ); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE -- 2.13.5