tools/testing/selftests/cpufreq/module.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Modules specific tests cases
   5
   6 # protect against multiple inclusion
   7 if [ $FILE_MODULE ]; then
   8         return 0
   9 else
  10         FILE_MODULE=DONE
  11 fi
  12
  13 source cpu.sh
  14 source cpufreq.sh
  15 source governor.sh
  16
  17 # Check basic insmod/rmmod
  18 # $1: module
  19 test_basic_insmod_rmmod()
  20 {
  21         printf "** Test: Running ${FUNCNAME[0]} **\n\n"
  22
  23         printf "Inserting $1 module\n"
  24         # insert module
  25         insmod $1
  26         if [ $? != 0 ]; then
  27                 ktap_exit_fail_msg "Insmod $1 failed\n"
  28         fi
  29
  30         printf "Removing $1 module\n"
  31         # remove module
  32         rmmod $1
  33         if [ $? != 0 ]; then
  34                 ktap_exit_fail_msg "rmmod $1 failed\n"
  35         fi
  36
  37         printf "\n"
  38 }
  39
  40 # Insert cpufreq driver module and perform basic tests
  41 # $1: cpufreq-driver module to insert
  42 # $2: If we want to play with CPUs (1) or not (0)
  43 module_driver_test_single()
  44 {
  45         printf "** Test: Running ${FUNCNAME[0]} for driver $1 and cpus_hotplug=$2 **\n\n"
  46
  47         if [ $2 -eq 1 ]; then
  48                 # offline all non-boot CPUs
  49                 for_each_non_boot_cpu offline_cpu
  50                 printf "\n"
  51         fi
  52
  53         # insert module
  54         printf "Inserting $1 module\n\n"
  55         insmod $1
  56         if [ $? != 0 ]; then
  57                 printf "Insmod $1 failed\n"
  58                 return;
  59         fi
  60
  61         if [ $2 -eq 1 ]; then
  62                 # online all non-boot CPUs
  63                 for_each_non_boot_cpu online_cpu
  64                 printf "\n"
  65         fi
  66
  67         # run basic tests
  68         cpufreq_basic_tests
  69
  70         # remove module
  71         printf "Removing $1 module\n\n"
  72         rmmod $1
  73         if [ $? != 0 ]; then
  74                 printf "rmmod $1 failed\n"
  75                 return;
  76         fi
  77
  78         # There shouldn't be any cpufreq directories now.
  79         for_each_cpu cpu_should_not_have_cpufreq_directory
  80         printf "\n"
  81 }
  82
  83 # $1: cpufreq-driver module to insert
  84 module_driver_test()
  85 {
  86         printf "** Test: Running ${FUNCNAME[0]} **\n\n"
  87
  88         # check if module is present or not
  89         ls $1 > /dev/null
  90         if [ $? != 0 ]; then
  91                 printf "$1: not present in `pwd` folder\n"
  92                 return;
  93         fi
  94
  95         # test basic module tests
  96         test_basic_insmod_rmmod $1
  97
  98         # Do simple module test
  99         module_driver_test_single $1 0
 100
 101         # Remove CPUs before inserting module and then bring them back
 102         module_driver_test_single $1 1
 103         printf "\n"
 104 }
 105
 106 # find governor name based on governor module name
 107 # $1: governor module name
 108 find_gov_name()
 109 {
 110         if [ $1 = "cpufreq_ondemand.ko" ]; then
 111                 printf "ondemand"
 112         elif [ $1 = "cpufreq_conservative.ko" ]; then
 113                 printf "conservative"
 114         elif [ $1 = "cpufreq_userspace.ko" ]; then
 115                 printf "userspace"
 116         elif [ $1 = "cpufreq_performance.ko" ]; then
 117                 printf "performance"
 118         elif [ $1 = "cpufreq_powersave.ko" ]; then
 119                 printf "powersave"
 120         elif [ $1 = "cpufreq_schedutil.ko" ]; then
 121                 printf "schedutil"
 122         fi
 123 }
 124
 125 # $1: governor string, $2: governor module, $3: policy
 126 # example: module_governor_test_single "ondemand" "cpufreq_ondemand.ko" 2
 127 module_governor_test_single()
 128 {
 129         printf "** Test: Running ${FUNCNAME[0]} for $3 **\n\n"
 130
 131         backup_governor $3
 132
 133         # switch to new governor
 134         printf "Switch from $CUR_GOV to $1\n"
 135         switch_show_governor $3 $1
 136
 137         # try removing module, it should fail as governor is used
 138         printf "Removing $2 module\n\n"
 139         rmmod $2
 140         if [ $? = 0 ]; then
 141                 printf "WARN: rmmod $2 succeeded even if governor is used\n"
 142                 insmod $2
 143         else
 144                 printf "Pass: unable to remove $2 while it is being used\n\n"
 145         fi
 146
 147         # switch back to old governor
 148         printf "Switchback to $CUR_GOV from $1\n"
 149         restore_governor $3
 150         printf "\n"
 151 }
 152
 153 # Insert cpufreq governor module and perform basic tests
 154 # $1: cpufreq-governor module to insert
 155 module_governor_test()
 156 {
 157         printf "** Test: Running ${FUNCNAME[0]} **\n\n"
 158
 159         # check if module is present or not
 160         ls $1 > /dev/null
 161         if [ $? != 0 ]; then
 162                 printf "$1: not present in `pwd` folder\n"
 163                 return;
 164         fi
 165
 166         # test basic module tests
 167         test_basic_insmod_rmmod $1
 168
 169         # insert module
 170         printf "Inserting $1 module\n\n"
 171         insmod $1
 172         if [ $? != 0 ]; then
 173                 printf "Insmod $1 failed\n"
 174                 return;
 175         fi
 176
 177         # switch to new governor for each cpu
 178         for_each_policy module_governor_test_single $(find_gov_name $1) $1
 179
 180         # remove module
 181         printf "Removing $1 module\n\n"
 182         rmmod $1
 183         if [ $? != 0 ]; then
 184                 printf "rmmod $1 failed\n"
 185                 return;
 186         fi
 187         printf "\n"
 188 }
 189
 190 # test modules: driver and governor
 191 # $1: driver module, $2: governor module
 192 module_test()
 193 {
 194         printf "** Test: Running ${FUNCNAME[0]} **\n\n"
 195
 196         # check if modules are present or not
 197         ls $1 $2 > /dev/null
 198         if [ $? != 0 ]; then
 199                 printf "$1 or $2: is not present in `pwd` folder\n"
 200                 return;
 201         fi
 202
 203         # TEST1: Insert gov after driver
 204         # insert driver module
 205         printf "Inserting $1 module\n\n"
 206         insmod $1
 207         if [ $? != 0 ]; then
 208                 printf "Insmod $1 failed\n"
 209                 return;
 210         fi
 211
 212         # run governor tests
 213         module_governor_test $2
 214
 215         # remove driver module
 216         printf "Removing $1 module\n\n"
 217         rmmod $1
 218         if [ $? != 0 ]; then
 219                 printf "rmmod $1 failed\n"
 220                 return;
 221         fi
 222
 223         # TEST2: Insert driver after governor
 224         # insert governor module
 225         printf "Inserting $2 module\n\n"
 226         insmod $2
 227         if [ $? != 0 ]; then
 228                 printf "Insmod $2 failed\n"
 229                 return;
 230         fi
 231
 232         # run governor tests
 233         module_driver_test $1
 234
 235         # remove driver module
 236         printf "Removing $2 module\n\n"
 237         rmmod $2
 238         if [ $? != 0 ]; then
 239                 printf "rmmod $2 failed\n"
 240                 return;
 241         fi
 242 }