#!/bin/sh # description: event tracing - restricts events based on pid do_reset() { echo > set_event echo > set_event_pid echo 0 > options/event-fork clear_trace } fail() { #msg do_reset echo $1 exit $FAIL } yield() { ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1 } if [ ! -f set_event -o ! -d events/sched ]; then echo "event tracing is not supported" exit_unsupported fi if [ ! -f set_event_pid ]; then echo "event pid filtering is not supported" exit_unsupported fi reset_tracer do_reset echo 1 > events/sched/sched_switch/enable yield count=`cat trace | grep sched_switch | wc -l` if [ $count -eq 0 ]; then fail "sched_switch events are not recorded" fi do_reset read mypid rest < /proc/self/stat echo $mypid > set_event_pid echo 'sched:sched_switch' > set_event yield count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l` if [ $count -ne 0 ]; then fail "sched_switch events from other task are recorded" fi do_reset echo $mypid > set_event_pid echo 1 > options/event-fork echo 1 > events/sched/sched_switch/enable yield count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l` if [ $count -eq 0 ]; then fail "sched_switch events from other task are not recorded" fi do_reset exit 0 ut type='submit' value='switch'/> net-next plumbingsTobias Klauser

path: root/tools/testing/selftests/ftrace/test.d

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