2 # SPDX-License-Identifier: GPL-2.0
3 # description: ftrace - function glob filters
5 # Make sure that function glob matching filter works.
7 if ! grep -q function available_tracers; then
8 echo "no function tracer configured"
15 ftrace_filter_check() { # glob grep
16 echo "$1" > set_ftrace_filter
17 cut -f1 -d" " set_ftrace_filter > $TMPDIR/actual
18 cut -f1 -d" " available_filter_functions | grep "$2" > $TMPDIR/expected
19 DIFF=`diff $TMPDIR/actual $TMPDIR/expected`
23 # filter by *, front match
24 ftrace_filter_check '*schedule' '^.*schedule$'
26 # filter by *, middle match
27 ftrace_filter_check '*schedule*' '^.*schedule.*$'
29 # filter by *, end match
30 ftrace_filter_check 'schedule*' '^schedule.*$'
33 ftrace_filter_check '*pin*lock' '.*pin.*lock$'
35 # filter by start*mid*
36 ftrace_filter_check 'mutex*try*' '^mutex.*try.*'
38 # Advanced full-glob matching feature is recently supported.
39 # Skip the tests if we are sure the kernel does not support it.
40 if grep -q 'accepts: .* glob-matching-pattern' README ; then
42 # filter by *, both side match
43 ftrace_filter_check 'sch*ule' '^sch.*ule$'
45 # filter by char class.
46 ftrace_filter_check '[Ss]y[Ss]_*' '^[Ss]y[Ss]_.*$'
48 # filter by ?, schedule is always good
49 if ! echo "sch?dule" > set_ftrace_filter; then
51 if ! echo ".sch?dule" > set_ftrace_filter; then
52 fail "can not enable schedule filter"
54 cat set_ftrace_filter | grep '^.schedule$'
56 cat set_ftrace_filter | grep '^schedule$'
61 echo > set_ftrace_filter