The usleep is only provided on distros from Redhat so running ftracetest
on other distro resulted in failures due to the missing usleep.
The reason of using [u]sleep in the test was to generate (scheduler)
events. It can be done various ways like this:
yield() { ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1; }
For more information to the history of this patch, please refer to:
Link: http://lkml.kernel.org/r/1427329943-16896-1-git-send-email-namhyung@kernel.org
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Luis Henriques <luis.henriques@canonical.com>
Suggested-by: Pádraig Brady <P@draigBrady.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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
do_reset
echo 'sched:sched_switch' > set_event
-usleep 1
+
+yield
count=`cat trace | grep sched_switch | wc -l`
if [ $count -eq 0 ]; then
do_reset
echo 1 > events/sched/sched_switch/enable
-usleep 1
+
+yield
count=`cat trace | grep sched_switch | wc -l`
if [ $count -eq 0 ]; then
do_reset
echo 0 > events/sched/sched_switch/enable
-usleep 1
+
+yield
count=`cat trace | grep sched_switch | wc -l`
if [ $count -ne 0 ]; then
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
do_reset
echo 'sched:*' > set_event
-usleep 1
+
+yield
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
if [ $count -lt 3 ]; then
do_reset
echo 1 > events/sched/enable
-usleep 1
+
+yield
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
if [ $count -lt 3 ]; then
do_reset
echo 0 > events/sched/enable
-usleep 1
+
+yield
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
if [ $count -ne 0 ]; then
exit $FAIL
}
+yield() {
+ ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
+}
+
if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
echo "event tracing is not supported"
exit_unsupported
do_reset
echo '*:*' > set_event
+
+yield
+
count=`cat trace | grep -v ^# | wc -l`
if [ $count -eq 0 ]; then
fail "none of events are recorded"
do_reset
echo 1 > events/enable
+
+yield
+
count=`cat trace | grep -v ^# | wc -l`
if [ $count -eq 0 ]; then
fail "none of events are recorded"
do_reset
echo 0 > events/enable
+
+yield
+
count=`cat trace | grep -v ^# | wc -l`
if [ $count -ne 0 ]; then
fail "any of events should not be recorded"