tools/testing/selftests/cpufreq/cpu.sh

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