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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: event tracing - enable/disable with module event
# requires: set_event "Can enable module events via: :mod:":README
# flags: instance
rmmod trace-events-sample ||:
if ! modprobe trace-events-sample ; then
echo "No trace-events sample module - please make CONFIG_SAMPLE_TRACE_EVENTS=m"
exit_unresolved;
fi
trap "rmmod trace-events-sample" EXIT
# Set events for the module
echo ":mod:trace-events-sample" > set_event
test_all_enabled() {
# Check if more than one is enabled
grep -q sample-trace:foo_bar set_event
grep -q sample-trace:foo_bar_with_cond set_event
grep -q sample-trace:foo_bar_with_fn set_event
# All of them should be enabled. Check via the enable file
val=`cat events/sample-trace/enable`
if [ $val -ne 1 ]; then
exit_fail
fi
}
clear_events() {
echo > set_event
val=`cat events/enable`
if [ "$val" != "0" ]; then
exit_fail
fi
count=`cat set_event | wc -l`
if [ $count -ne 0 ]; then
exit_fail
fi
}
test_all_enabled
echo clear all events
echo 0 > events/enable
echo Confirm the events are disabled
val=`cat events/sample-trace/enable`
if [ $val -ne 0 ]; then
exit_fail
fi
echo And the set_event file is empty
cnt=`wc -l set_event`
if [ $cnt -ne 0 ]; then
exit_fail
fi
echo now enable all events
echo 1 > events/enable
echo Confirm the events are enabled again
val=`cat events/sample-trace/enable`
if [ $val -ne 1 ]; then
exit_fail
fi
echo disable just the module events
echo '!:mod:trace-events-sample' >> set_event
echo Should have mix of events enabled
val=`cat events/enable`
if [ "$val" != "X" ]; then
exit_fail
fi
echo Confirm the module events are disabled
val=`cat events/sample-trace/enable`
if [ $val -ne 0 ]; then
exit_fail
fi
echo 0 > events/enable
echo now enable the system events
echo 'sample-trace:mod:trace-events-sample' > set_event
test_all_enabled
echo clear all events
echo 0 > events/enable
echo Confirm the events are disabled
val=`cat events/sample-trace/enable`
if [ $val -ne 0 ]; then
exit_fail
fi
echo Test enabling foo_bar only
echo 'foo_bar:mod:trace-events-sample' > set_event
grep -q sample-trace:foo_bar set_event
echo make sure nothing is found besides foo_bar
if grep -q -v sample-trace:foo_bar set_event ; then
exit_fail
fi
echo Append another using the system and event name
echo 'sample-trace:foo_bar_with_cond:mod:trace-events-sample' >> set_event
grep -q sample-trace:foo_bar set_event
grep -q sample-trace:foo_bar_with_cond set_event
count=`cat set_event | wc -l`
if [ $count -ne 2 ]; then
exit_fail
fi
clear_events
rmmod trace-events-sample
echo ':mod:trace-events-sample' > set_event
echo make sure that the module shows up, and '-' is converted to '_'
grep -q '\*:\*:mod:trace_events_sample' set_event
modprobe trace-events-sample
test_all_enabled
clear_events
rmmod trace-events-sample
echo Enable just the system events
echo 'sample-trace:mod:trace-events-sample' > set_event
grep -q 'sample-trace:mod:trace_events_sample' set_event
modprobe trace-events-sample
test_all_enabled
clear_events
rmmod trace-events-sample
echo Enable event with just event name
echo 'foo_bar:mod:trace-events-sample' > set_event
grep -q 'foo_bar:mod:trace_events_sample' set_event
echo Enable another event with both system and event name
echo 'sample-trace:foo_bar_with_cond:mod:trace-events-sample' >> set_event
grep -q 'sample-trace:foo_bar_with_cond:mod:trace_events_sample' set_event
echo Make sure the other event was still there
grep -q 'foo_bar:mod:trace_events_sample' set_event
modprobe trace-events-sample
echo There should be no :mod: cached events
if grep -q ':mod:' set_event; then
exit_fail
fi
echo two events should be enabled
count=`cat set_event | wc -l`
if [ $count -ne 2 ]; then
exit_fail
fi
echo only two events should be enabled
val=`cat events/sample-trace/enable`
if [ "$val" != "X" ]; then
exit_fail
fi
val=`cat events/sample-trace/foo_bar/enable`
if [ "$val" != "1" ]; then
exit_fail
fi
val=`cat events/sample-trace/foo_bar_with_cond/enable`
if [ "$val" != "1" ]; then
exit_fail
fi
clear_trace
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