linux_kernel/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc

#!/bin/sh
# description: event trigger - test synthetic event create remove
do_reset() {
    reset_trigger
    echo > set_event
    clear_trace
}

fail() { #msg
    do_reset
    echo $1
    exit_fail
}

if [ ! -f set_event ]; then
    echo "event tracing is not supported"
    exit_unsupported
fi

if [ ! -f synthetic_events ]; then
    echo "synthetic event is not supported"
    exit_unsupported
fi

clear_synthetic_events
reset_tracer
do_reset

echo "Test create synthetic event"

echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
if [ ! -d events/synthetic/wakeup_latency ]; then
    fail "Failed to create wakeup_latency synthetic event"
fi

reset_trigger

echo "Test create synthetic event with an error"
echo 'wakeup_latency  u64 lat pid_t pid char' > synthetic_events > /dev/null
if [ -d events/synthetic/wakeup_latency ]; then
    fail "Created wakeup_latency synthetic event with an invalid format"
fi

reset_trigger

echo "Test remove synthetic event"
echo '!wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
if [ -d events/synthetic/wakeup_latency ]; then
    fail "Failed to delete wakeup_latency synthetic event"
fi

do_reset

exit 0