From: Naveen N. Rao Date: Fri, 7 Jul 2017 18:57:32 +0000 (+0530) Subject: selftests/ftrace: Add a test to probe module functions X-Git-Tag: v4.13-rc1~36^2~7 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ff431b1390cbf8764f8550b8e427eb28d4a6328e;p=platform%2Fkernel%2Flinux-exynos.git selftests/ftrace: Add a test to probe module functions Add a kprobes test to ensure that we are able to add a probe on a module function using 'p :' format, with/without having to specify a probe name. Link: http://lkml.kernel.org/r/2d8087e25a7ad9206f3e2b7b4bb0c3c86eaa38af.1499453040.git.naveen.n.rao@linux.vnet.ibm.com Suggested-by: Masami Hiramatsu Acked-by: Masami Hiramatsu Signed-off-by: Naveen N. Rao Signed-off-by: Steven Rostedt (VMware) --- diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc new file mode 100644 index 0000000..6d634e4 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc @@ -0,0 +1,28 @@ +#!/bin/sh +# description: Kprobe dynamic event - probing module + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +disable_events +echo > kprobe_events + +:;: "Add an event on a module function without specifying event name" ;: + +MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "` +FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "` +[ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_unresolved +echo "p $MOD:$FUNC" > kprobe_events +PROBE_NAME=`echo $MOD:$FUNC | tr ".:" "_"` +test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure + +:;: "Add an event on a module function with new event name" ;: + +echo "p:event1 $MOD:$FUNC" > kprobe_events +test -d events/kprobes/event1 || exit_failure + +:;: "Add an event on a module function with new event and group name" ;: + +echo "p:kprobes1/event1 $MOD:$FUNC" > kprobe_events +test -d events/kprobes1/event1 || exit_failure + +echo > kprobe_events