From: "Steven Rostedt (VMware)" Al Viro discovered a bug in the removing of function probes where if it had a '*' at the beginning, it would fail to find any matches. That is, because it reset the glob search string to the the initial string with a "MATCH_END" type, instead of skipping the wildcard "*" it included it, where it would not match any functions because "*" was being treated as a normal character and not a wildcard one. Link: http://lkml.kernel.org/r/20180127031706.GE13338@ZenIV.linux.org.uk Cc: Shuah Khan Signed-off-by: Steven Rostedt (VMware) --- .../ftrace/test.d/ftrace/func_set_ftrace_file.tc | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc index 0f3f92622e33..68e7a48f5828 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc @@ -128,6 +128,43 @@ if check_set_ftrace_filter "$FUNC1" "$FUNC2" ; then fail "Expected $FUNC1 and $FUNC2" fi +test_actual() { # Compares $TMPDIR/expected with set_ftrace_filter + cat set_ftrace_filter | grep -v '#' | cut -d' ' -f1 | cut -d':' -f1 | sort -u > $TMPDIR/actual + DIFF=`diff $TMPDIR/actual $TMPDIR/expected` + test -z "$DIFF" +} + +# Set traceoff trigger for all fuctions with "lock" in their name +cat available_filter_functions | cut -d' ' -f1 | grep 'lock' | sort -u > $TMPDIR/expected +echo '*lock*:traceoff' > set_ftrace_filter +test_actual + +# now remove all with 'try' in it, and end with lock +grep -v 'try.*lock$' $TMPDIR/expected > $TMPDIR/expected2 +mv $TMPDIR/expected2 $TMPDIR/expected +echo '!*try*lock:traceoff' >> set_ftrace_filter +test_actual + +# remove all that start with "m" and end with "lock" +grep -v '^m.*lock$' $TMPDIR/expected > $TMPDIR/expected2 +mv $TMPDIR/expected2 $TMPDIR/expected +echo '!m*lock:traceoff' >> set_ftrace_filter +test_actual + +# remove all that start with "c" and have "unlock" +grep -v '^c.*unlock' $TMPDIR/expected > $TMPDIR/expected2 +mv $TMPDIR/expected2 $TMPDIR/expected +echo '!c*unlock*:traceoff' >> set_ftrace_filter +test_actual + +# clear all the rest +> $TMPDIR/expected +echo '!*:traceoff' >> set_ftrace_filter +test_actual + +rm $TMPDIR/expected +rm $TMPDIR/actual + do_reset exit 0 -- 2.15.1