tools/testing/selftests/cpufreq/special-tests.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Special test cases reported by people
   5
   6 # Testcase 1: Reported here: http://marc.info/?l=linux-pm&m=140618592709858&w=2
   7
   8 # protect against multiple inclusion
   9 if [ $FILE_SPECIAL ]; then
  10         return 0
  11 else
  12         FILE_SPECIAL=DONE
  13 fi
  14
  15 source cpu.sh
  16 source cpufreq.sh
  17 source governor.sh
  18
  19 # Test 1
  20 # $1: policy
  21 __simple_lockdep()
  22 {
  23         # switch to ondemand
  24         __switch_governor $1 "ondemand"
  25
  26         # cat ondemand files
  27         local ondir=$(find_gov_directory $1 "ondemand")
  28         if [ -z $ondir ]; then
  29                 printf "${FUNCNAME[0]}Ondemand directory not created, quit"
  30                 return
  31         fi
  32
  33         cat $ondir/*
  34
  35         # switch to conservative
  36         __switch_governor $1 "conservative"
  37 }
  38
  39 simple_lockdep()
  40 {
  41         printf "** Test: Running ${FUNCNAME[0]} **\n"
  42
  43         for_each_policy __simple_lockdep
  44 }
  45
  46 # Test 2
  47 # $1: policy
  48 __concurrent_lockdep()
  49 {
  50         for i in `seq 0 100`; do
  51                 __simple_lockdep $1
  52         done
  53 }
  54
  55 concurrent_lockdep()
  56 {
  57         printf "** Test: Running ${FUNCNAME[0]} **\n"
  58
  59         for_each_policy_concurrent __concurrent_lockdep
  60 }
  61
  62 # Test 3
  63 quick_shuffle()
  64 {
  65         # this is called concurrently from governor_race
  66         for I in `seq 1000`
  67         do
  68                 echo ondemand | sudo tee $CPUFREQROOT/policy*/scaling_governor &
  69                 echo userspace | sudo tee $CPUFREQROOT/policy*/scaling_governor &
  70         done
  71 }
  72
  73 governor_race()
  74 {
  75         printf "** Test: Running ${FUNCNAME[0]} **\n"
  76
  77         # run 8 concurrent instances
  78         for I in `seq 8`
  79         do
  80                 quick_shuffle &
  81         done
  82 }
  83
  84 # Test 4
  85 # $1: cpu
  86 hotplug_with_updates_cpu()
  87 {
  88         local filepath="$CPUROOT/$1/cpufreq"
  89
  90         # switch to ondemand
  91         __switch_governor_for_cpu $1 "ondemand"
  92
  93         for i in `seq 1 5000`
  94         do
  95                 reboot_cpu $1
  96         done &
  97
  98         local freqs=$(cat $filepath/scaling_available_frequencies)
  99         local oldfreq=$(cat $filepath/scaling_min_freq)
 100
 101         for j in `seq 1 5000`
 102         do
 103                 # Set all frequencies one-by-one
 104                 for freq in $freqs; do
 105                         echo $freq > $filepath/scaling_min_freq
 106                 done
 107         done
 108
 109         # restore old freq
 110         echo $oldfreq > $filepath/scaling_min_freq
 111 }
 112
 113 hotplug_with_updates()
 114 {
 115         for_each_non_boot_cpu hotplug_with_updates_cpu
 116 }