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Commit 91e6f1ce authored by Steven Rostedt (Red Hat)'s avatar Steven Rostedt (Red Hat) Committed by Steven Rostedt
Browse files

ftracetest: Add instance created, delete, read and enable event test 



Add a new ftrace test that creates three threads. One that creates and
removes an ftrace instance, one that reads the instance, and one that enables
and disables events in the instance. This is a stress test for accessing and
removing instances at the same time.

Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 0fc1b09f

tools/testing/selftests/ftrace/test.d/instances/instance-event.tc

0 → 100644
+143 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: Test creation and deletion of trace instances while setting an event



if [ ! -d instances ] ; then

    echo "no instance directory with this kernel"

    exit_unsupported;

fi



fail() { # mesg

    rmdir foo 2>/dev/null

    echo $1

    set -e

    exit $FAIL

}



cd instances



# we don't want to fail on error

set +e



mkdir x

rmdir x

result=$?



if [ $result -ne 0 ]; then

    echo "instance rmdir not supported"

    exit_unsupported

fi



instance_slam() {

        while :; do

                mkdir foo 2> /dev/null

                rmdir foo 2> /dev/null

        done

}



instance_read() {

        while :; do

                cat foo/trace 1> /dev/null 2>&1

        done

}



instance_set() {

        while :; do

                echo 1 > foo/events/sched/sched_switch

        done 2> /dev/null

}



instance_slam &

p1=$!

echo $p1



instance_set &

p2=$!

echo $p2



instance_read &

p3=$!

echo $p3



sleep 1



kill -1 $p3

kill -1 $p2

kill -1 $p1



echo "Wait for processes to finish"

wait $p1 $p2 $p3

echo "all processes finished, wait for cleanup"

sleep 1



mkdir foo

ls foo > /dev/null

rmdir foo

if [ -d foo ]; then

        fail "foo still exists"

fi

exit 0









instance_slam() {

    while :; do

	mkdir x

	mkdir y

	mkdir z

	rmdir x

	rmdir y

	rmdir z

    done 2>/dev/null

}



instance_slam &

x=`jobs -l`

p1=`echo $x | cut -d' ' -f2`

echo $p1



instance_slam &

x=`jobs -l | tail -1`

p2=`echo $x | cut -d' ' -f2`

echo $p2



instance_slam &

x=`jobs -l | tail -1`

p3=`echo $x | cut -d' ' -f2`

echo $p3



instance_slam &

x=`jobs -l | tail -1`

p4=`echo $x | cut -d' ' -f2`

echo $p4



instance_slam &

x=`jobs -l | tail -1`

p5=`echo $x | cut -d' ' -f2`

echo $p5



ls -lR >/dev/null

sleep 1



kill -1 $p1

kill -1 $p2

kill -1 $p3

kill -1 $p4

kill -1 $p5



echo "Wait for processes to finish"

wait $p1 $p2 $p3 $p4 $p5

echo "all processes finished, wait for cleanup"



mkdir x y z

ls x y z

rmdir x y z

for d in x y z; do

        if [ -d $d ]; then

                fail "instance $d still exists"

        fi

done



set -e



exit 0