#! stap -p4

# Normally we'd just test the ioscheduler.* probes, not the
# ioscheduler.*.kp/ioscheduler.*.tp underlying probe aliases.  On
# systems where the tracepoint aliases are used (*.tp), we'd never
# test the kprobes aliases (*.kp).  This could cause them to get out
# of sync with the kprobed functions.  So, we test them explicitly.

probe ioscheduler.elv_next_request
{
	printf("%s: %s\n", name, elevator_name)
}
probe ioscheduler.elv_next_request.return
{
	printf("name: %s, %d, %d, %p, %d", name, disk_major,
	       disk_minor, rq, rq_flags)
}

probe ioscheduler.elv_completed_request
{
	printf("name: %s, elv_name: %s, %d, %d, %p, %d", name, elevator_name,
	       disk_major, disk_minor, rq, rq_flags)
}

probe ioscheduler.elv_add_request,
      ioscheduler.elv_add_request.kp,
      ioscheduler.elv_add_request.tp ?
{
	printf("name: %s, elv_name: %s, %d, %d, %p, %d", name, elevator_name,
	       disk_major, disk_minor, rq, rq_flags)
	printf("%p\n", q)
}

probe ioscheduler_trace.elv_completed_request ?,
      ioscheduler_trace.elv_issue_request ?,
      ioscheduler_trace.elv_requeue_request ?,
      ioscheduler_trace.elv_abort_request ?
{
	printf("name: %s, request %p, elv_name: %s, %d, %d, %d\n",
	       name, rq, elevator_name, disk_major, disk_minor, rq_flags)
}

probe ioscheduler_trace.plug ?,
      ioscheduler_trace.unplug_io ?,
      ioscheduler_trace.unplug_timer ?
{
        printf("name: %s, request %p", name, rq_queue)
}