diff options
| author |   Eric Farman <farman@linux.ibm.com> | 2020-05-05 14:27:45 +0200 |
|---|---|---|
| committer |   Cornelia Huck <cohuck@redhat.com> | 2020-06-03 11:28:19 +0200 |
| commit | b2dd9a44a1098c96935c495570b663bd223a087e (patch) | |
| tree | 02722e471fadc8e344011949fadde0e479fa0e63 /drivers/s390 | |
| parent | vfio-ccw: Wire up the CRW irq and CRW region (diff) | |
| download | linux-dev-b2dd9a44a1098c96935c495570b663bd223a087e.tar.xz linux-dev-b2dd9a44a1098c96935c495570b663bd223a087e.zip | |
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: 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>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_drv.c | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_trace.c | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_trace.h | 30 |
3 files changed, 32 insertions, 0 deletions
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c index 9144360851ed..8c625b530035 100644 --- a/drivers/s390/cio/vfio_ccw_drv.c +++ b/drivers/s390/cio/vfio_ccw_drv.c @@ -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, 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 f5d31887d413..62fb30598d47 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, |