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| author |   Eric Farman <farman@linux.ibm.com> | 2019-10-16 16:20:39 +0200 |
|---|---|---|
| committer |   Cornelia Huck <cohuck@redhat.com> | 2019-10-17 11:36:55 +0200 |
| commit | d5950b02b79eed046dd52ec40f3485221e95146b (patch) | |
| tree | cd9fd46664b985db765e93c485836a4d1f412c90 /drivers/s390/cio/vfio_ccw_trace.h | |
| parent | vfio-ccw: Trace the FSM jumptable (diff) | |
| download | linux-dev-d5950b02b79eed046dd52ec40f3485221e95146b.tar.xz linux-dev-d5950b02b79eed046dd52ec40f3485221e95146b.zip | |
vfio-ccw: Add a trace for asynchronous requests
Since the asynchronous requests are typically associated with
error recovery, let's add a simple trace when one of those is
issued to a device.
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20191016142040.14132-4-farman@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_trace.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/s390/cio/vfio_ccw_trace.h b/drivers/s390/cio/vfio_ccw_trace.h index 5005d57901b4..5f57cefa84dd 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_fsm_async_request, + TP_PROTO(struct subchannel_id schid, + int command, + int errno), + TP_ARGS(schid, command, errno), + + TP_STRUCT__entry( + __field(u8, cssid) + __field(u8, ssid) + __field(u16, sch_no) + __field(int, command) + __field(int, errno) + ), + + TP_fast_assign( + __entry->cssid = schid.cssid; + __entry->ssid = schid.ssid; + __entry->sch_no = schid.sch_no; + __entry->command = command; + __entry->errno = errno; + ), + + TP_printk("schid=%x.%x.%04x command=0x%x errno=%d", + __entry->cssid, + __entry->ssid, + __entry->sch_no, + __entry->command, + __entry->errno) +); + TRACE_EVENT(vfio_ccw_fsm_event, TP_PROTO(struct subchannel_id schid, int state, int event), TP_ARGS(schid, state, event), |