tests/test_meminfo_hierarchy.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: LGPL-2.1+
   3
   4 set -eu
   5 [ -n "${DEBUG:-}" ] && set -x
   6
   7 LXCFSDIR=${LXCFSDIR:-/var/lib/lxcfs}
   8
   9 cg1=$(uuidgen).$$
  10 cg2=$(uuidgen).$$
  11
  12 cleanup() {
  13         if [ $FAILED -eq 1 ]; then
  14                 exit 1
  15         fi
  16         exit 0
  17 }
  18
  19 FAILED=1
  20 trap cleanup EXIT HUP INT TERM
  21
  22 [ ! -d /sys/fs/cgroup/memory ] && exit 0
  23 echo "==> Setting up memory cgroup"
  24 initmemory=`awk -F: '/memory/ { print $3 }' /proc/1/cgroup`
  25 mempath=/sys/fs/cgroup/memory/${initmemory}
  26 rmdir ${mempath}/${cg1} 2>/dev/null || true
  27 rmdir ${mempath}/${cg2} 2>/dev/null || true
  28
  29 echo "==> Testing /proc/meminfo with limit"
  30 mkdir ${mempath}/${cg1}
  31 echo 500000000 > ${mempath}/${cg1}/memory.limit_in_bytes
  32 echo 1 > ${mempath}/${cg1}/tasks
  33 m1=`awk '/^MemTotal:/ { print $2 }' ${LXCFSDIR}/proc/meminfo`
  34
  35 echo "==> Testing /proc/meminfo with sub-cgroup"
  36 mkdir ${mempath}/${cg1}/${cg2}
  37 echo 1 > ${mempath}/${cg1}/${cg2}/tasks
  38 m2=`awk '/^MemTotal:/ { print $2 }' ${LXCFSDIR}/proc/meminfo`
  39
  40 echo "==> Confirming same limits"
  41 [ $m1 -eq $m2 ]
  42
  43 FAILED=0