1 #!/bin/sh 2 # 3 # Test Case 4 4 # 5 6 export TCID="cpuhotplug04" 7 export TST_TOTAL=1 8 9 # Includes: 10 . test.sh 11 . cpuhotplug_testsuite.sh 12 . cpuhotplug_hotplug.sh 13 14 cat <<EOF 15 Name: $TCID 16 Date: `date` 17 Desc: Does it prevent us from offlining the last CPU? 18 19 EOF 20 21 usage() 22 { 23 cat << EOF 24 usage: $0 -l loop 25 26 OPTIONS 27 -l number of cycle test 28 29 EOF 30 exit 1 31 } 32 33 do_clean() 34 { 35 # Online the ones that were on initially 36 # Restore CPU states 37 set_all_cpu_states "$cpu_states" 38 } 39 40 while getopts l: OPTION; do 41 case $OPTION in 42 l) 43 HOTPLUG04_LOOPS=$OPTARG;; 44 ?) 45 usage;; 46 esac 47 done 48 49 LOOP_COUNT=1 50 51 cpus_num=$(get_present_cpus_num) 52 if [ $cpus_num -lt 2 ]; then 53 tst_brkm TCONF "system doesn't have required CPU hotplug support" 54 fi 55 56 if [ $(get_hotplug_cpus_num) -lt 1 ]; then 57 tst_brkm TCONF "system doesn't have at least one hotpluggable CPU" 58 fi 59 60 TST_CLEANUP=do_clean 61 62 cpu_states=$(get_all_cpu_states) 63 64 until [ $LOOP_COUNT -gt $HOTPLUG04_LOOPS ]; do 65 66 # Online all the hotpluggable CPUs 67 for i in $(get_hotplug_cpus); do 68 if ! cpu_is_online $i; then 69 if ! online_cpu $i; then 70 tst_brkm TBROK "$i can not be onlined" 71 fi 72 fi 73 done 74 75 # Now offline them 76 cpu=0 77 for i in $(get_hotplug_cpus); do 78 cpu=$((cpu + 1)) 79 80 # If all the CPUs are hotpluggable, we expect 81 # that the kernel will refuse to offline the last CPU. 82 # If only some of the CPUs are hotpluggable, 83 # they all can be offlined. 84 if [ $cpu -eq $cpus_num ]; then 85 if offline_cpu $i 2> /dev/null; then 86 tst_brkm TFAIL "Have we just offlined the last CPU?" 87 else 88 tst_resm TPASS "System prevented us from offlining the last CPU - $i" 89 fi 90 else 91 if ! offline_cpu $i; then 92 tst_brkm TFAIL "Could not offline $i" 93 fi 94 fi 95 done 96 97 LOOP_COUNT=$((LOOP_COUNT+1)) 98 99 done 100 101 tst_resm TPASS "Success" 102 103 tst_exit 104
