#!/bin/sh# SPDX-License-Identifier: GPL-2.0# description: event trigger - test stacktrace-trigger fail() { #msg    echo $1    exit_fail} if [ ! -f set_event -o ! -d events/sched ]; then    echo "event tracing is not supported"    exit_unsupportedfi if [ ! -f events/sched/sched_process_fork/trigger ]; then    echo "event trigger is not supported"    exit_unsupportedfi FEATURE=`grep stacktrace events/sched/sched_process_fork/trigger`if [ -z "$FEATURE" ]; then    echo "stacktrace trigger is not supported"    exit_unsupportedfi echo "Test stacktrace tigger"echo 0 > traceecho 0 > options/stacktraceecho 'stacktrace' > events/sched/sched_process_fork/trigger( echo "forked")grep "<stack trace>" trace > /dev/null || \    fail "stacktrace trigger on sched_process_fork did not work" reset_trigger echo "Test stacktrace semantic errors" ! echo "stacktrace:foo" > events/sched/sched_process_fork/triggerecho "stacktrace" > events/sched/sched_process_fork/trigger! echo "stacktrace" > events/sched/sched_process_fork/trigger exit 0