1#!/bin/sh 2# description: event tracing - enable/disable with event level files 3 4do_reset() { 5 echo > set_event 6 clear_trace 7} 8 9fail() { #msg 10 do_reset 11 echo $1 12 exit -1 13} 14 15if [ ! -f set_event -o ! -d events/sched ]; then 16 echo "event tracing is not supported" 17 exit_unsupported 18fi 19 20reset_tracer 21do_reset 22 23echo 'sched:sched_switch' > set_event 24usleep 1 25 26count=`cat trace | grep sched_switch | wc -l` 27if [ $count -eq 0 ]; then 28 fail "sched_switch events are not recorded" 29fi 30 31do_reset 32 33echo 1 > events/sched/sched_switch/enable 34usleep 1 35 36count=`cat trace | grep sched_switch | wc -l` 37if [ $count -eq 0 ]; then 38 fail "sched_switch events are not recorded" 39fi 40 41do_reset 42 43echo 0 > events/sched/sched_switch/enable 44usleep 1 45 46count=`cat trace | grep sched_switch | wc -l` 47if [ $count -ne 0 ]; then 48 fail "sched_switch events should not be recorded" 49fi 50 51do_reset 52 53exit 0 54