Commit b2dd9a44 authored by Eric Farman's avatar Eric Farman Committed by Cornelia Huck
Browse files

vfio-ccw: Add trace for CRW event 



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

Signed-off-by: default avatarEric Farman <farman@linux.ibm.com>
Reviewed-by: default avatarCornelia Huck <cohuck@redhat.com>
Message-Id: <20200505122745.53208-9-farman@linux.ibm.com>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
parent 3f02cb2f

drivers/s390/cio/vfio_ccw_drv.c

+1 −0
Original line number Diff line number Diff line
@@ -336,6 +336,7 @@ 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,

drivers/s390/cio/vfio_ccw_trace.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

drivers/s390/cio/vfio_ccw_trace.h

+30 −0
Original line number Diff line number Diff line
@@ -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,

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