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vfio-ccw: Add trace for CRW event

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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>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200505122745.53208-9-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Eric Farman 2020-05-05 14:27:45 +02:00 committed by Cornelia Huck
parent 3f02cb2fd9
commit b2dd9a44a1
3 changed files with 32 additions and 0 deletions
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1
drivers/s390/cio/vfio_ccw_drv.c
View file

@ -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,

1
drivers/s390/cio/vfio_ccw_trace.c
View file

@ -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);

30
drivers/s390/cio/vfio_ccw_trace.h
View file

@ -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,