From: Namhyung Kim 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 Signed-off-by: Namhyung Kim Signed-off-by: Steven Rostedt --- tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc | 1 + tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc | 1 + tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc | 1 + tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc | 1 + 4 files changed, 4 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc index 1b8b665ab2b3..a5a426211129 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc @@ -9,3 +9,4 @@ echo p:myevent do_fork > kprobe_events grep myevent kprobe_events test -d events/kprobes/myevent echo > kprobe_events +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc index b55c84003587..d8c7bb6581fe 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc @@ -11,3 +11,4 @@ echo 1 > events/kprobes/myevent/enable echo > kprobe_events && exit 1 # this must fail echo 0 > events/kprobes/myevent/enable echo > kprobe_events # this must succeed +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc index a603d3f8db7b..c45ee2761354 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc @@ -12,5 +12,6 @@ echo 1 > events/kprobes/testprobe/enable ( echo "forked") echo 0 > events/kprobes/testprobe/enable echo "-:testprobe" >> kprobe_events +clear_trace test -d events/kprobes/testprobe && exit 1 || exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc index 283c29e7f7c4..31717985acc7 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc @@ -12,4 +12,5 @@ echo 1 > events/kprobes/testprobe2/enable ( echo "forked") echo 0 > events/kprobes/testprobe2/enable echo '-:testprobe2' >> kprobe_events +clear_trace test -d events/kprobes/testprobe2 && exit 1 || exit 0 -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/