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selftests: tracing: Enable fprobe events before checking enable_functions

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Since the fprobe is not registered before enabling the fprobe events,
enable_functions is also empty before enabling it. Thus the tests
which checking enable_functions must ensure the event is enabled before
testing the enable_functions.

Link: https://lore.kernel.org/all/174343538009.843280.6583146613234713007.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
This commit is contained in:
Masami Hiramatsu (Google) 2025-04-01 00:36:20 +09:00
parent 2db832ec90
commit 434f6703ce
1 changed files with 27 additions and 19 deletions
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46
tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc
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@ -16,36 +16,41 @@ ocnt=`cat enabled_functions | wc -l`
echo "f:myevent1 $PLACE" >> dynamic_events
# Make sure the event is attached and is the only one
grep -q $PLACE enabled_functions
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 1)) ]; then
exit_fail
fi
echo "f:myevent2 $PLACE%return" >> dynamic_events
# It should till be the only attached function
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 1)) ]; then
exit_fail
fi
# add another event
echo "f:myevent3 $PLACE2" >> dynamic_events
grep -q $PLACE2 enabled_functions
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 2)) ]; then
exit_fail
fi
grep -q myevent1 dynamic_events
grep -q myevent2 dynamic_events
grep -q myevent3 dynamic_events
test -d events/fprobes/myevent1
test -d events/fprobes/myevent2
echo 1 > events/fprobes/myevent1/enable
# Make sure the event is attached and is the only one
grep -q $PLACE enabled_functions
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 1)) ]; then
exit_fail
fi
echo 1 > events/fprobes/myevent2/enable
# It should till be the only attached function
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 1)) ]; then
exit_fail
fi
echo 1 > events/fprobes/myevent3/enable
# If the function is different, the attached function should be increased
grep -q $PLACE2 enabled_functions
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 2)) ]; then
exit_fail
fi
echo 0 > events/fprobes/myevent2/enable
echo "-:myevent2" >> dynamic_events
grep -q myevent1 dynamic_events
@ -57,6 +62,7 @@ if [ $cnt -ne $((ocnt + 2)) ]; then
exit_fail
fi
echo 0 > events/fprobes/enable
echo > dynamic_events
# Should have none left
@ -67,12 +73,14 @@ fi
echo "f:myevent4 $PLACE" >> dynamic_events
echo 1 > events/fprobes/myevent4/enable
# Should only have one enabled
cnt=`cat enabled_functions | wc -l`
if [ $cnt -ne $((ocnt + 1)) ]; then
exit_fail
fi
echo 0 > events/fprobes/enable
echo > dynamic_events
# Should have none left