#!/bin/bash# Perf event open fallback test# SPDX-License-Identifier: GPL-2.0 skip_cnt=0ok_cnt=0err_cnt=0 perf_record(){	perf record -o /dev/null "$@" -- true 1>/dev/null 2>&1} test_decrease_precise_ip(){	echo "Decrease precise ip test" 	perf list pmu | grep -q 'cycles' || return 2 	if ! perf_record -e cycles; then		return 2	fi 	# It should reduce precision level down to 0 if needed.	if ! perf_record -e cycles:P; then		return 1	fi	return 0} test_decrease_precise_ip_complicated(){	echo "Decrease precise ip test (complicated case)" 	perf list pmu | grep -q 'mem-loads-aux' || return 2 	if ! perf_record -e '{mem-loads-aux:S,mem-loads:PS}'; then		return 1	fi	return 0} count_result(){	if [ "$1" -eq 2 ] ; then		skip_cnt=$((skip_cnt + 1))		return	fi	if [ "$1" -eq 0 ] ; then		ok_cnt=$((ok_cnt + 1))		return	fi	err_cnt=$((err_cnt + 1))} ret=0test_decrease_precise_ip		|| ret=$? ; count_result $ret ; ret=0test_decrease_precise_ip_complicated	|| ret=$? ; count_result $ret ; ret=0 cleanup if [ ${err_cnt} -gt 0 ] ; then	exit 1fi if [ ${ok_cnt} -gt 0 ] ; then	exit 0fi # Skipexit 2