tools/testing/selftests/cgroup/test_cpuset_v1_base.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Basc test for cpuset v1 interfaces write/read
   5 #
   6
   7 skip_test() {
   8         echo "$1"
   9         echo "Test SKIPPED"
  10         exit 4 # ksft_skip
  11 }
  12
  13 write_test() {
  14         dir=$1
  15         interface=$2
  16         value=$3
  17         original=$(cat $dir/$interface)
  18         echo "testing $interface $value"
  19         echo $value > $dir/$interface
  20         new=$(cat $dir/$interface)
  21         [[ $value -ne $(cat $dir/$interface) ]] && {
  22                 echo "$interface write $value failed: new:$new"
  23                 exit 1
  24         }
  25 }
  26
  27 [[ $(id -u) -eq 0 ]] || skip_test "Test must be run as root!"
  28
  29 # Find cpuset v1 mount point
  30 CPUSET=$(mount -t cgroup | grep cpuset | head -1 | awk '{print $3}')
  31 [[ -n "$CPUSET" ]] || skip_test "cpuset v1 mount point not found!"
  32
  33 #
  34 # Create a test cpuset, read write test
  35 #
  36 TDIR=test$$
  37 [[ -d $CPUSET/$TDIR ]] || mkdir $CPUSET/$TDIR
  38
  39 ITF_MATRIX=(
  40         #interface                      value           expect  root_only
  41         'cpuset.cpus                    0-1             0-1     0'
  42         'cpuset.mem_exclusive           1               1       0'
  43         'cpuset.mem_exclusive           0               0       0'
  44         'cpuset.mem_hardwall            1               1       0'
  45         'cpuset.mem_hardwall            0               0       0'
  46         'cpuset.memory_migrate          1               1       0'
  47         'cpuset.memory_migrate          0               0       0'
  48         'cpuset.memory_spread_page      1               1       0'
  49         'cpuset.memory_spread_page      0               0       0'
  50         'cpuset.memory_spread_slab      1               1       0'
  51         'cpuset.memory_spread_slab      0               0       0'
  52         'cpuset.mems                    0               0       0'
  53         'cpuset.sched_load_balance      1               1       0'
  54         'cpuset.sched_load_balance      0               0       0'
  55         'cpuset.sched_relax_domain_level        2       2       0'
  56         'cpuset.memory_pressure_enabled 1               1       1'
  57         'cpuset.memory_pressure_enabled 0               0       1'
  58 )
  59
  60 run_test()
  61 {
  62         cnt="${ITF_MATRIX[@]}"
  63         for i in "${ITF_MATRIX[@]}" ; do
  64                 args=($i)
  65                 root_only=${args[3]}
  66                 [[ $root_only -eq 1 ]] && {
  67                         write_test "$CPUSET" "${args[0]}" "${args[1]}" "${args[2]}"
  68                         continue
  69                 }
  70                 write_test "$CPUSET/$TDIR" "${args[0]}" "${args[1]}" "${args[2]}"
  71         done
  72 }
  73
  74 run_test
  75 rmdir $CPUSET/$TDIR
  76 echo "Test PASSED"
  77 exit 0