mirror of
https://github.com/systemd/systemd
synced 2024-07-09 04:26:06 +00:00
69 lines
1.5 KiB
Bash
Executable File
69 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# SPDX-License-Identifier: LGPL-2.1-or-later
|
|
set -ex
|
|
set -o pipefail
|
|
|
|
# We not just test if the file exists, but try to read from it, since if
|
|
# CONFIG_PSI_DEFAULT_DISABLED is set in the kernel the file will exist and can
|
|
# be opened, but any read()s will fail with EOPNOTSUPP, which we want to
|
|
# detect.
|
|
if ! cat /proc/pressure/memory >/dev/null ; then
|
|
echo "kernel too old, has no PSI." >&2
|
|
echo OK >/testok
|
|
exit 0
|
|
fi
|
|
|
|
systemd-analyze log-level debug
|
|
|
|
CGROUP=/sys/fs/cgroup/"$(systemctl show TEST-79-MEMPRESS.service -P ControlGroup)"
|
|
test -d "$CGROUP"
|
|
|
|
if ! test -f "$CGROUP"/memory.pressure ; then
|
|
echo "No memory accounting/PSI delegated via cgroup, can't test." >&2
|
|
echo OK >/testok
|
|
exit 0
|
|
fi
|
|
|
|
UNIT="test-mempress-$RANDOM.service"
|
|
SCRIPT="/tmp/mempress-$RANDOM.sh"
|
|
|
|
cat >"$SCRIPT" <<'EOF'
|
|
#!/bin/bash
|
|
|
|
set -ex
|
|
|
|
export
|
|
id
|
|
|
|
test -n "$MEMORY_PRESSURE_WATCH"
|
|
test "$MEMORY_PRESSURE_WATCH" != /dev/null
|
|
test -w "$MEMORY_PRESSURE_WATCH"
|
|
|
|
ls -al "$MEMORY_PRESSURE_WATCH"
|
|
|
|
EXPECTED="$(echo -n -e "some 123000 2000000\x00" | base64)"
|
|
|
|
test "$EXPECTED" = "$MEMORY_PRESSURE_WRITE"
|
|
|
|
EOF
|
|
|
|
chmod +x "$SCRIPT"
|
|
|
|
systemd-run \
|
|
-u "$UNIT" \
|
|
-p Type=exec \
|
|
-p ProtectControlGroups=1 \
|
|
-p DynamicUser=1 \
|
|
-p MemoryPressureWatch=on \
|
|
-p MemoryPressureThresholdSec=123ms \
|
|
-p BindPaths=$SCRIPT \
|
|
`# Make sanitizers happy when DynamicUser=1 pulls in instrumented systemd NSS modules` \
|
|
-p EnvironmentFile=-/usr/lib/systemd/systemd-asan-env \
|
|
--wait "$SCRIPT"
|
|
|
|
rm "$SCRIPT"
|
|
|
|
systemd-analyze log-level info
|
|
|
|
touch /testok
|