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From: Eric Farman <farman@linux.ibm.com>
To: Cornelia Huck <cohuck@redhat.com>
Cc: Halil Pasic <pasic@linux.ibm.com>,
	Jason Herne <jjherne@linux.ibm.com>,
	Jared Rossi <jrossi@linux.ibm.com>,
	Eric Farman <farman@linux.ibm.com>,
	linux-s390@vger.kernel.org, kvm@vger.kernel.org
Subject: [RFC PATCH v2 8/9] vfio-ccw: Add trace for CRW event
Date: Thu,  6 Feb 2020 22:38:24 +0100	[thread overview]
Message-ID: <20200206213825.11444-9-farman@linux.ibm.com> (raw)
In-Reply-To: <20200206213825.11444-1-farman@linux.ibm.com>

Since CRW events are (should be) rare, let's put a trace
in that routine too.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 drivers/s390/cio/vfio_ccw_drv.c   |  1 +
 drivers/s390/cio/vfio_ccw_trace.c |  1 +
 drivers/s390/cio/vfio_ccw_trace.h | 30 ++++++++++++++++++++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index c48c260a129d..21952258d71a 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -357,6 +357,7 @@ static int vfio_ccw_chp_event(struct subchannel *sch,
 	if (!private || !mask)
 		return 0;
 
+	trace_vfio_ccw_chp_event(private->sch->schid, mask, event);
 	VFIO_CCW_MSG_EVENT(2, "%pUl (%x.%x.%04x): mask=0x%x event=%d\n",
 			   mdev_uuid(private->mdev), sch->schid.cssid,
 			   sch->schid.ssid, sch->schid.sch_no,
diff --git a/drivers/s390/cio/vfio_ccw_trace.c b/drivers/s390/cio/vfio_ccw_trace.c
index 8c671d2519f6..4a0205905afc 100644
--- a/drivers/s390/cio/vfio_ccw_trace.c
+++ b/drivers/s390/cio/vfio_ccw_trace.c
@@ -9,6 +9,7 @@
 #define CREATE_TRACE_POINTS
 #include "vfio_ccw_trace.h"
 
+EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_chp_event);
 EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_async_request);
 EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_event);
 EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_io_request);
diff --git a/drivers/s390/cio/vfio_ccw_trace.h b/drivers/s390/cio/vfio_ccw_trace.h
index 30162a318a8a..8c82d0c27e81 100644
--- a/drivers/s390/cio/vfio_ccw_trace.h
+++ b/drivers/s390/cio/vfio_ccw_trace.h
@@ -17,6 +17,36 @@
 
 #include <linux/tracepoint.h>
 
+TRACE_EVENT(vfio_ccw_chp_event,
+	TP_PROTO(struct subchannel_id schid,
+		 int mask,
+		 int event),
+	TP_ARGS(schid, mask, event),
+
+	TP_STRUCT__entry(
+		__field(u8, cssid)
+		__field(u8, ssid)
+		__field(u16, sch_no)
+		__field(int, mask)
+		__field(int, event)
+	),
+
+	TP_fast_assign(
+		__entry->cssid = schid.cssid;
+		__entry->ssid = schid.ssid;
+		__entry->sch_no = schid.sch_no;
+		__entry->mask = mask;
+		__entry->event = event;
+	),
+
+	TP_printk("schid=%x.%x.%04x mask=0x%x event=%d",
+		  __entry->cssid,
+		  __entry->ssid,
+		  __entry->sch_no,
+		  __entry->mask,
+		  __entry->event)
+);
+
 TRACE_EVENT(vfio_ccw_fsm_async_request,
 	TP_PROTO(struct subchannel_id schid,
 		 int command,
-- 
2.17.1

  parent reply	other threads:[~2020-02-06 21:38 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-06 21:38 [RFC PATCH v2 0/9] s390x/vfio-ccw: Channel Path Handling Eric Farman
2020-02-06 21:38 ` [RFC PATCH v2 1/9] vfio-ccw: Introduce new helper functions to free/destroy regions Eric Farman
2020-02-06 21:38 ` [RFC PATCH v2 2/9] vfio-ccw: Register a chp_event callback for vfio-ccw Eric Farman
2020-02-14 12:11   ` Cornelia Huck
2020-02-14 16:35     ` Eric Farman
2020-03-24 15:58       ` Cornelia Huck
2020-03-26  2:09         ` Eric Farman
2020-03-26  6:47           ` Cornelia Huck
2020-03-26 11:54             ` Eric Farman
2020-02-06 21:38 ` [RFC PATCH v2 3/9] vfio-ccw: Refactor the unregister of the async regions Eric Farman
2020-02-06 21:38 ` [RFC PATCH v2 4/9] vfio-ccw: Introduce a new schib region Eric Farman
2020-02-14 12:32   ` Cornelia Huck
2020-02-14 14:29     ` Eric Farman
2020-02-06 21:38 ` [RFC PATCH v2 5/9] vfio-ccw: Introduce a new CRW region Eric Farman
2020-04-06 13:40   ` Cornelia Huck
2020-04-06 21:43     ` Eric Farman
2020-04-07  6:30       ` Cornelia Huck
2020-02-06 21:38 ` [RFC PATCH v2 6/9] vfio-ccw: Refactor IRQ handlers Eric Farman
2020-02-06 21:38 ` [RFC PATCH v2 7/9] vfio-ccw: Wire up the CRW irq and CRW region Eric Farman
2020-02-14 13:34   ` Cornelia Huck
2020-02-14 16:24     ` Eric Farman
2020-03-24 16:34       ` Cornelia Huck
2020-03-26 18:51         ` Eric Farman
2020-04-06 13:52   ` Cornelia Huck
2020-04-06 22:11     ` Eric Farman
2020-02-06 21:38 ` Eric Farman [this message]
2020-02-06 21:38 ` [RFC PATCH v2 9/9] vfio-ccw: Remove inline get_schid() routine Eric Farman
2020-02-14 13:27   ` Cornelia Huck
2020-02-14 14:27     ` Eric Farman
2020-02-07  9:12 ` [RFC PATCH v2 0/9] s390x/vfio-ccw: Channel Path Handling Cornelia Huck
2020-02-07 13:26   ` Eric Farman

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