#!/bin/sh
|
# SPDX-License-Identifier: GPL-2.0
|
# description: ftrace - function glob filters
|
|
# Make sure that function glob matching filter works.
|
|
if ! grep -q function available_tracers; then
|
echo "no function tracer configured"
|
exit_unsupported
|
fi
|
|
disable_tracing
|
clear_trace
|
|
ftrace_filter_check() { # glob grep
|
echo "$1" > set_ftrace_filter
|
cut -f1 -d" " set_ftrace_filter > $TMPDIR/actual
|
cut -f1 -d" " available_filter_functions | grep "$2" > $TMPDIR/expected
|
DIFF=`diff $TMPDIR/actual $TMPDIR/expected`
|
test -z "$DIFF"
|
}
|
|
# filter by *, front match
|
ftrace_filter_check '*schedule' '^.*schedule$'
|
|
# filter by *, middle match
|
ftrace_filter_check '*schedule*' '^.*schedule.*$'
|
|
# filter by *, end match
|
ftrace_filter_check 'schedule*' '^schedule.*$'
|
|
# filter by *mid*end
|
ftrace_filter_check '*pin*lock' '.*pin.*lock$'
|
|
# filter by start*mid*
|
ftrace_filter_check 'mutex*try*' '^mutex.*try.*'
|
|
# Advanced full-glob matching feature is recently supported.
|
# Skip the tests if we are sure the kernel does not support it.
|
if grep -q 'accepts: .* glob-matching-pattern' README ; then
|
|
# filter by *, both side match
|
ftrace_filter_check 'sch*ule' '^sch.*ule$'
|
|
# filter by char class.
|
ftrace_filter_check '[Ss]y[Ss]_*' '^[Ss]y[Ss]_.*$'
|
|
# filter by ?, schedule is always good
|
if ! echo "sch?dule" > set_ftrace_filter; then
|
# test for powerpc 64
|
if ! echo ".sch?dule" > set_ftrace_filter; then
|
fail "can not enable schedule filter"
|
fi
|
cat set_ftrace_filter | grep '^.schedule$'
|
else
|
cat set_ftrace_filter | grep '^schedule$'
|
fi
|
|
fi
|
|
echo > set_ftrace_filter
|
enable_tracing
|
