vfio-ccw: Add a trace for asynchronous requests (d5950b02) · Commits · 戴 / test

drivers/s390/cio/vfio_ccw_fsm.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -341,6 +341,10 @@ static void fsm_async_request(struct vfio_ccw_private *private,
		/* should not happen? */
		cmd_region->ret_code = -EINVAL;
		}

		trace_vfio_ccw_fsm_async_request(get_schid(private),
		cmd_region->command,
		cmd_region->ret_code);
		}

		/*

+1 −0

Original line number	Diff line number	Diff line
		@@ -9,5 +9,6 @@
		#define CREATE_TRACE_POINTS
		#include "vfio_ccw_trace.h"

		EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_async_request);
		EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_event);
		EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_io_fctl);

+30 −0

Original line number	Diff line number	Diff line
		@@ -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),