Open Menu / tools / testing / selftests / verification / test.d / rv_deadline.tc 
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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# description: Test deadline monitors trigger no reaction
# requires: available_reactors deadline:monitor printk:reactor stress-ng:program

load() { # returns true if there was a reaction
	local lines_before
	lines_before=$(dmesg | wc -l)
	stress-ng --cpu 2 --sched deadline --sched-period 100000000 \
		--sched-deadline 100000000 --sched-runtime 20000000 -t 5 &
	stress-ng --cpu 2 --sched rr --sched-prio 50 --cyclic 1 \
		--cyclic-policy rr --cyclic-prio 50 -t 5 &
	wait
	dmesg | tail -n +$((lines_before + 1)) | grep -q "rv: monitor [a-z]\+ does not allow event"
}

echo 1 > monitors/deadline/enable
echo printk > monitors/deadline/reactors

! load || false

echo nop > monitors/deadline/reactors
echo 0 > monitors/deadline/enable