linux/drivers/s390/cio/vfio_ccw_trace.h
Halil Pasic 3cd90214b7 vfio: ccw: add tracepoints for interesting error paths
Add some tracepoints so we can inspect what is not working as is should.

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.ibm.com>
Message-Id: <20180523025645.8978-5-bjsdjshi@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-05-29 09:27:42 +02:00

55 lines
1.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0
* Tracepoints for vfio_ccw driver
*
* Copyright IBM Corp. 2018
*
* Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
* Halil Pasic <pasic@linux.vnet.ibm.com>
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM vfio_ccw
#if !defined(_VFIO_CCW_TRACE_) || defined(TRACE_HEADER_MULTI_READ)
#define _VFIO_CCW_TRACE_
#include <linux/tracepoint.h>
TRACE_EVENT(vfio_ccw_io_fctl,
TP_PROTO(int fctl, struct subchannel_id schid, int errno, char *errstr),
TP_ARGS(fctl, schid, errno, errstr),
TP_STRUCT__entry(
__field(int, fctl)
__field_struct(struct subchannel_id, schid)
__field(int, errno)
__field(char*, errstr)
),
TP_fast_assign(
__entry->fctl = fctl;
__entry->schid = schid;
__entry->errno = errno;
__entry->errstr = errstr;
),
TP_printk("schid=%x.%x.%04x fctl=%x errno=%d info=%s",
__entry->schid.cssid,
__entry->schid.ssid,
__entry->schid.sch_no,
__entry->fctl,
__entry->errno,
__entry->errstr)
);
#endif /* _VFIO_CCW_TRACE_ */
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE vfio_ccw_trace
#include <trace/define_trace.h>