(2014/10/20 19:52), Heiko Carstens wrote: > Add a kprobes on ftrace testcase. The testcase verifies that > - enabling and disabling function tracing works on a function which > already contains a dynamic kprobe > - adding and removing a dynamic kprobe works on a function which is > already enabled for function tracing >
Looks good to me. > Signed-off-by: Heiko Carstens <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> Thanks! > --- > .../ftrace/test.d/kprobe/kprobe_ftrace.tc | 55 > ++++++++++++++++++++++ > 1 file changed, 55 insertions(+) > create mode 100644 > tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc > > diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc > b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc > new file mode 100644 > index 000000000000..ab41d2b29841 > --- /dev/null > +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc > @@ -0,0 +1,55 @@ > +#!/bin/sh > +# description: Kprobe dynamic event with function tracer > + > +[ -f kprobe_events ] || exit_unsupported # this is configurable > +grep function available_tracers || exit_unsupported # this is configurable > + > +# prepare > +echo nop > current_tracer > +echo do_fork > set_ftrace_filter > +echo 0 > events/enable > +echo > kprobe_events > +echo 'p:testprobe do_fork' > kprobe_events > + > +# kprobe on / ftrace off > +echo 1 > events/kprobes/testprobe/enable > +echo > trace > +( echo "forked") > +grep testprobe trace > +! grep 'do_fork <-' trace I like this technique :) > + > +# kprobe on / ftrace on > +echo function > current_tracer > +echo > trace > +( echo "forked") > +grep testprobe trace > +grep 'do_fork <-' trace > + > +# kprobe off / ftrace on > +echo 0 > events/kprobes/testprobe/enable > +echo > trace > +( echo "forked") > +! grep testprobe trace > +grep 'do_fork <-' trace > + > +# kprobe on / ftrace on > +echo 1 > events/kprobes/testprobe/enable > +echo function > current_tracer > +echo > trace > +( echo "forked") > +grep testprobe trace > +grep 'do_fork <-' trace > + > +# kprobe on / ftrace off > +echo nop > current_tracer > +echo > trace > +( echo "forked") > +grep testprobe trace > +! grep 'do_fork <-' trace > + > +# cleanup > +echo nop > current_tracer > +echo > set_ftrace_filter > +echo 0 > events/kprobes/testprobe/enable > +echo > kprobe_events > +echo > trace > -- Masami HIRAMATSU Software Platform Research Dept. Linux Technology Research Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
