From: Masami Hiramatsu <mhira...@kernel.org> Add a testcase for kprobe event naming. This testcase checks whether the kprobe events can automatically ganerate its event name on normal function and dot-suffixed function. Also it checks whether the kprobe events can correctly define new event with given event name and group name.
Signed-off-by: Masami Hiramatsu <mhira...@kernel.org> [Updated tests to use vfs_read and symbols with '.isra.', added check for kprobe_events and a command to clear it on exit] Signed-off-by: Naveen N. Rao <naveen.n....@linux.vnet.ibm.com> --- .../ftrace/test.d/kprobe/kprobe_eventname.tc | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc new file mode 100644 index 000000000000..182e5a78ef4b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc @@ -0,0 +1,32 @@ +#!/bin/sh +# description: Kprobe event auto/manual naming + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +disable_events +echo > kprobe_events + +:;: "Add an event on function without name" ;: + +FUNC=`grep " [tT] .*vfs_read$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "` +echo p $FUNC > kprobe_events +FUNC_NAME=`echo $FUNC | tr ".:" "_"` +test -d events/kprobes/p_${FUNC_NAME}_0 || exit_failure + +:;: "Add an event on function with new name" ;: + +echo p:event1 $FUNC > kprobe_events +test -d events/kprobes/event1 || exit_failure + +:;: "Add an event on function with new name and group" ;: + +echo p:kprobes2/event2 $FUNC > kprobe_events +test -d events/kprobes2/event2 || exit_failure + +:;: "Add an event on dot function without name" ;: + +FUNC=`grep -m 10 " [tT] .*\.isra\..*$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "` +echo p $FUNC > kprobe_events +EVENT=`grep $FUNC kprobe_events | cut -f 1 -d " " | cut -f 2 -d:` || exit_failure +test -d events/$EVENT || exit_failure +echo > kprobe_events -- 2.13.1