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Commit 6fc7c411 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Steven Rostedt (VMware)
Browse files

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

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: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent d899926f

tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc

+12 −18
Original line number Diff line number Diff line
@@ -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

tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc

+1 −1
Original line number Diff line number Diff line
@@ -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`