#!/bin/sh cd /sys/kernel/tracing compare_file() {	file="$1"	val="$2"	content=`cat $file`	if [ "$content" != "$val" ]; then		echo "FAILED: $file has '$content', expected '$val'"		exit 1	fi} compare_file_partial() {	file="$1"	val="$2"	content=`cat $file | sed -ne "/^$val/p"`	if [ -z "$content" ]; then		echo "FAILED: $file does not contain '$val'"		cat $file		exit 1	fi} file_contains() {	file=$1	val="$2" 	if ! grep -q "$val" $file ; then		echo "FAILED: $file does not contain $val"		cat $file		exit 1	fi} compare_mask() {	file=$1	val="$2" 	content=`cat $file | sed -ne "/^[0 ]*$val/p"`	if [ -z "$content" ]; then		echo "FAILED: $file does not have mask '$val'"		cat $file		exit 1	fi}  compare_file "tracing_on" "0"compare_file "current_tracer" "function_graph" compare_file_partial "events/kprobes/start_event/enable" "1"compare_file_partial "events/kprobes/start_event/trigger" "traceon"file_contains "kprobe_events" 'start_event.*pci_proc_init' compare_file_partial "events/kprobes/end_event/enable" "1"compare_file_partial "events/kprobes/end_event/trigger" "traceoff"file_contains "kprobe_events" '^r.*end_event.*pci_proc_init' exit 0