1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# description: event tracing - enable/disable with subsystem level files 4# requires: set_event events/sched/enable 5# flags: instance 6 7do_reset() { 8 echo > set_event 9 clear_trace 10} 11 12fail() { #msg 13 echo $1 14 exit_fail 15} 16 17echo 'sched:*' > set_event 18 19yield 20 21count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` 22if [ $count -lt 3 ]; then 23 fail "at least fork, exec and exit events should be recorded" 24fi 25 26do_reset 27 28echo 1 > events/sched/enable 29 30yield 31 32count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` 33if [ $count -lt 3 ]; then 34 fail "at least fork, exec and exit events should be recorded" 35fi 36 37do_reset 38 39echo 0 > events/sched/enable 40 41yield 42 43count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` 44if [ $count -ne 0 ]; then 45 fail "any of scheduler events should not be recorded" 46fi 47 48exit 0 49