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| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2017-07-08 00:27:32 +0530 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-07-09 07:46:25 -0400 |
| commit | ff431b1390cbf8764f8550b8e427eb28d4a6328e (patch) | |
| tree | 5340d8442b87aba4e5d3da5df546ab354b955e5f /tools | |
| parent | f7181e5aaab58d81c5453887e39a1e1041f6bb1a (diff) | |
| download | linux-ff431b1390cbf8764f8550b8e427eb28d4a6328e.tar.bz2 | |
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 <mod>:<func>' 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 <mhiramat@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc | 28 |
1 files changed, 28 insertions, 0 deletions
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 000000000000..6d634e4b7680 --- /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 |