1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3# description: ftrace - function glob filters
4# requires: set_ftrace_filter function:tracer
5
6# Make sure that function glob matching filter works.
7
8disable_tracing
9clear_trace
10
11ftrace_filter_check() { # glob grep
12  echo "$1" > set_ftrace_filter
13  cut -f1 -d" " set_ftrace_filter > $TMPDIR/actual
14  cut -f1 -d" " available_filter_functions | grep "$2" > $TMPDIR/expected
15  DIFF=`diff $TMPDIR/actual $TMPDIR/expected`
16  test -z "$DIFF"
17}
18
19# filter by *, front match
20ftrace_filter_check '*schedule' '^.*schedule$'
21
22# filter by *, middle match
23ftrace_filter_check '*schedule*' '^.*schedule.*$'
24
25# filter by *, end match
26ftrace_filter_check 'schedule*' '^schedule.*$'
27
28# filter by *mid*end
29ftrace_filter_check '*pin*lock' '.*pin.*lock$'
30
31# filter by start*mid*
32ftrace_filter_check 'mutex*try*' '^mutex.*try.*'
33
34# Advanced full-glob matching feature is recently supported.
35# Skip the tests if we are sure the kernel does not support it.
36if grep -q 'accepts: .* glob-matching-pattern' README ; then
37
38# filter by *, both side match
39ftrace_filter_check 'sch*ule' '^sch.*ule$'
40
41# filter by char class.
42ftrace_filter_check '[Ss]y[Ss]_*' '^[Ss]y[Ss]_.*$'
43
44# filter by ?, schedule is always good
45if ! echo "sch?dule" > set_ftrace_filter; then
46    # test for powerpc 64
47    if ! echo ".sch?dule" > set_ftrace_filter; then
48	fail "can not enable schedule filter"
49    fi
50    cat set_ftrace_filter | grep '^.schedule$'
51else
52    cat set_ftrace_filter | grep '^schedule$'
53fi
54
55fi
56
57echo > set_ftrace_filter
58enable_tracing
59