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 }
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