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