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selftests/ftrace: Fix kprobe string testcase to not probe notrace function

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Fix kprobe string argument testcase to not probe notrace
function. Instead, it probes tracefs function which must
be available with ftrace.

Link: http://lkml.kernel.org/r/153294607107.32740.1664854684396589624.stgit@devbox

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2018-07-30 19:21:11 +09:00 • committed by Steven Rostedt (VMware)
parent d899926f55
commit 6fc7c4110c
2 changed files with 13 additions and 19 deletions
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30
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc
View file

@ -9,28 +9,22 @@ echo > kprobe_events
case `uname -m` in
x86_64)
ARG2=%si
OFFS=8
ARG1=%di
;;
i[3456]86)
ARG2=%cx
OFFS=4
ARG1=%ax
;;
aarch64)
ARG2=%x1
OFFS=8
ARG1=%x0
;;
arm*)
ARG2=%r1
OFFS=4
ARG1=%r0
;;
ppc64*)
ARG2=%r4
OFFS=8
ARG1=%r3
;;
ppc*)
ARG2=%r4
OFFS=4
ARG1=%r3
;;
*)
echo "Please implement other architecture here"
@ -38,17 +32,17 @@ ppc*)
esac
: "Test get argument (1)"
echo "p:testprobe create_trace_kprobe arg1=+0(+0(${ARG2})):string" > kprobe_events
echo "p:testprobe tracefs_create_dir arg1=+0(${ARG1}):string" > kprobe_events
echo 1 > events/kprobes/testprobe/enable
! echo test >> kprobe_events
tail -n 1 trace | grep -qe "testprobe.* arg1=\"test\""
echo "p:test _do_fork" >> kprobe_events
grep -qe "testprobe.* arg1=\"test\"" trace
echo 0 > events/kprobes/testprobe/enable
: "Test get argument (2)"
echo "p:testprobe create_trace_kprobe arg1=+0(+0(${ARG2})):string arg2=+0(+${OFFS}(${ARG2})):string" > kprobe_events
echo "p:testprobe tracefs_create_dir arg1=+0(${ARG1}):string arg2=+0(${ARG1}):string" > kprobe_events
echo 1 > events/kprobes/testprobe/enable
! echo test1 test2 >> kprobe_events
tail -n 1 trace | grep -qe "testprobe.* arg1=\"test1\" arg2=\"test2\""
echo "p:test _do_fork" >> kprobe_events
grep -qe "testprobe.* arg1=\"test\" arg2=\"test\"" trace
echo 0 > events/enable
echo > kprobe_events

2
tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc
View file

@ -4,7 +4,7 @@
[ -f kprobe_events ] || exit_unsupported # this is configurable
TARGET_FUNC=create_trace_kprobe
TARGET_FUNC=tracefs_create_dir
dec_addr() { # hexaddr
printf "%d" "0x"`echo $1 | tail -c 8`