tools/testing/selftests/cpufreq/cpu.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # CPU helpers
   5
   6 # protect against multiple inclusion
   7 if [ $FILE_CPU ]; then
   8         return 0
   9 else
  10         FILE_CPU=DONE
  11 fi
  12
  13 source cpufreq.sh
  14
  15 for_each_cpu()
  16 {
  17         cpus=$(ls $CPUROOT | grep "cpu[0-9].*")
  18         for cpu in $cpus; do
  19                 $@ $cpu
  20         done
  21 }
  22
  23 for_each_non_boot_cpu()
  24 {
  25         cpus=$(ls $CPUROOT | grep "cpu[1-9].*")
  26         for cpu in $cpus; do
  27                 $@ $cpu
  28         done
  29 }
  30
  31 #$1: cpu
  32 offline_cpu()
  33 {
  34         printf "Offline $1\n"
  35         echo 0 > $CPUROOT/$1/online
  36 }
  37
  38 #$1: cpu
  39 online_cpu()
  40 {
  41         printf "Online $1\n"
  42         echo 1 > $CPUROOT/$1/online
  43 }
  44
  45 #$1: cpu
  46 reboot_cpu()
  47 {
  48         offline_cpu $1
  49         online_cpu $1
  50 }
  51
  52 # Reboot CPUs
  53 # param: number of times we want to run the loop
  54 reboot_cpus()
  55 {
  56         printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n"
  57
  58         for i in `seq 1 $1`; do
  59                 for_each_non_boot_cpu offline_cpu
  60                 for_each_non_boot_cpu online_cpu
  61                 printf "\n"
  62         done
  63
  64         printf "\n%s\n\n" "------------------------------------------------"
  65 }
  66
  67 # Prints warning for all CPUs with missing cpufreq directory
  68 print_unmanaged_cpus()
  69 {
  70         for_each_cpu cpu_should_have_cpufreq_directory
  71 }
  72
  73 # Counts CPUs with cpufreq directories
  74 count_cpufreq_managed_cpus()
  75 {
  76         count=0;
  77
  78         for cpu in `ls $CPUROOT | grep "cpu[0-9].*"`; do
  79                 if [ -d $CPUROOT/$cpu/cpufreq ]; then
  80                         let count=count+1;
  81                 fi
  82         done
  83
  84         echo $count;
  85 }