ftracetest: Clear trace buffer after running kprobe testcases
commitce1ac64b930a9f702cc89af590728df6b345ab31
authorNamhyung Kim <namhyung@kernel.org>
Thu, 6 Nov 2014 02:04:29 +0000 (6 11:04 +0900)
committerSteven Rostedt <rostedt@goodmis.org>
Thu, 6 Nov 2014 13:39:39 +0000 (6 08:39 -0500)
tree6099d357102dbd729d544440a68d505ceb3ecab4
parent347e0e46b1515165ec3e2786ff5bee31eb778bb5
ftracetest: Clear trace buffer after running kprobe testcases

The kprobe testcases create, use and delete dynamic events during the
test but didn't clear the trace buffer so it'll leave the result after
it finishes.

  # ./ftracetest
  ...

  # cat trace
  # tracer: nop
  #
  # entries-in-buffer/entries-written: 2/2   #P:12
  #
  #                              _-----=> irqs-off
  #                             / _----=> need-resched
  #                            | / _---=> hardirq/softirq
  #                            || / _--=> preempt-depth
  #                            ||| /     delay
  #           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
  #              | |       |   ||||       |         |
        ftracetest-26474 [009] d..1 79417.143782: Unknown type 1099
        ftracetest-26498 [009] d..1 79417.208034: Unknown type 1101

Link: http://lkml.kernel.org/r/1415239470-28705-2-git-send-email-namhyung@kernel.org
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc