From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751960AbdJEOvY (ORCPT ); Thu, 5 Oct 2017 10:51:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59962 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751869AbdJEOvW (ORCPT ); Thu, 5 Oct 2017 10:51:22 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 9592E267F5 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.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 v3 17/17] hyper-v: trace channel events Date: Thu, 5 Oct 2017 16:50:44 +0200 Message-Id: <20171005145044.12181-18-vkuznets@redhat.com> In-Reply-To: <20171005145044.12181-1-vkuznets@redhat.com> References: <20171005145044.12181-1-vkuznets@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Thu, 05 Oct 2017 14:51:22 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Added an additional set of trace points for when channel gets notified or signals host. Suggested-by: Stephen Hemminger Signed-off-by: Vitaly Kuznetsov --- drivers/hv/channel.c | 2 ++ drivers/hv/connection.c | 2 ++ drivers/hv/hv_trace.h | 23 +++++++++++++++++++++++ drivers/hv/vmbus_drv.c | 2 ++ 4 files changed, 29 insertions(+) diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 3efe9e8ab079..4824a5bc178d 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -43,6 +43,8 @@ void vmbus_setevent(struct vmbus_channel *channel) { struct hv_monitor_page *monitorpage; + trace_vmbus_setevent(channel); + /* * For channels marked as in "low latency" mode * bypass the monitor page mechanism. diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 5e36f86d0b0c..8acd2e0e7c8e 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -322,6 +322,8 @@ void vmbus_on_event(unsigned long data) struct vmbus_channel *channel = (void *) data; unsigned long time_limit = jiffies + 2; + trace_vmbus_on_event(channel); + do { void (*callback_fn)(void *); diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index 5382d9630306..d635ee95b20d 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -294,6 +294,29 @@ TRACE_EVENT(vmbus_send_tl_connect_request, ) ); +DECLARE_EVENT_CLASS(vmbus_channel, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel), + TP_STRUCT__entry(__field(u32, relid)), + TP_fast_assign(__entry->relid = channel->offermsg.child_relid), + TP_printk("relid 0x%x", __entry->relid) +); + +DEFINE_EVENT(vmbus_channel, vmbus_chan_sched, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel) +); + +DEFINE_EVENT(vmbus_channel, vmbus_setevent, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel) +); + +DEFINE_EVENT(vmbus_channel, vmbus_on_event, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel) +); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index ced33b1982c4..c882c4a9d9f5 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -945,6 +945,8 @@ static void vmbus_chan_sched(struct hv_per_cpu_context *hv_cpu) if (channel->rescind) continue; + trace_vmbus_chan_sched(channel); + switch (channel->callback_mode) { case HV_CALL_ISR: vmbus_channel_isr(channel); -- 2.13.6