ftrace.event {
	task.task_newtask {
		filter = "pid < 128"
		enable
	}
	kprobes.vfs_read {
              probes = "vfs_read $arg1 $arg2"
              filter = "common_pid < 200"
              enable
      }
      synthetic.initcall_latency {
              fields = "unsigned long func", "u64 lat"
              actions = "hist:keys=func.sym,lat:vals=lat:sort=lat"
      }
      initcall.initcall_start {
              actions = "hist:keys=func:ts0=common_timestamp.usecs"
      }
      initcall.initcall_finish {
              actions = "hist:keys=func:lat=common_timestamp.usecs-$ts0:onmatch(initcall.initcall_start).initcall_latency(func,$lat)"
      }
}

ftrace.instance {
      foo {
              tracer = "function"
              ftrace.filters = "user_*"
              cpumask = 1
              options = nosym-addr
              buffer_size = 512KB
              trace_clock = mono
		event.signal.signal_deliver.actions=snapshot
      }
      bar {
              tracer = "function"
              ftrace.filters = "kernel_*"
	      cpumask = 2
             trace_clock = x86-tsc
      }
}

ftrace.alloc_snapshot

kernel {
      trace_options = sym-addr
      trace_events = "initcall:*"
#      tp_printk
      trace_buf_size = 1M
      ftrace = function
      ftrace_filter = "vfs*"
}