Commit | Line | Data |
---|---|---|
e66d5b67 | 1 | #!/bin/bash |
b2441318 | 2 | # SPDX-License-Identifier: GPL-2.0 |
e66d5b67 VK |
3 | # |
4 | # Test governors | |
5 | ||
6 | # protect against multiple inclusion | |
7 | if [ $FILE_GOVERNOR ]; then | |
8 | return 0 | |
9 | else | |
10 | FILE_GOVERNOR=DONE | |
11 | fi | |
12 | ||
13 | source cpu.sh | |
14 | source cpufreq.sh | |
15 | ||
16 | CUR_GOV= | |
17 | CUR_FREQ= | |
18 | ||
19 | # Find governor's directory path | |
20 | # $1: policy, $2: governor | |
21 | find_gov_directory() | |
22 | { | |
23 | if [ -d $CPUFREQROOT/$2 ]; then | |
24 | printf "$CPUFREQROOT/$2\n" | |
25 | elif [ -d $CPUFREQROOT/$1/$2 ]; then | |
26 | printf "$CPUFREQROOT/$1/$2\n" | |
27 | else | |
28 | printf "INVALID\n" | |
29 | fi | |
30 | } | |
31 | ||
32 | # $1: policy | |
33 | find_current_governor() | |
34 | { | |
35 | cat $CPUFREQROOT/$1/scaling_governor | |
36 | } | |
37 | ||
38 | # $1: policy | |
39 | backup_governor() | |
40 | { | |
41 | CUR_GOV=$(find_current_governor $1) | |
42 | ||
43 | printf "Governor backup done for $1: $CUR_GOV\n" | |
44 | ||
45 | if [ $CUR_GOV == "userspace" ]; then | |
46 | CUR_FREQ=$(find_current_freq $1) | |
47 | printf "Governor frequency backup done for $1: $CUR_FREQ\n" | |
48 | fi | |
49 | ||
50 | printf "\n" | |
51 | } | |
52 | ||
53 | # $1: policy | |
54 | restore_governor() | |
55 | { | |
56 | __switch_governor $1 $CUR_GOV | |
57 | ||
58 | printf "Governor restored for $1 to $CUR_GOV\n" | |
59 | ||
60 | if [ $CUR_GOV == "userspace" ]; then | |
61 | set_cpu_frequency $1 $CUR_FREQ | |
62 | printf "Governor frequency restored for $1: $CUR_FREQ\n" | |
63 | fi | |
64 | ||
65 | printf "\n" | |
66 | } | |
67 | ||
68 | # param: | |
69 | # $1: policy, $2: governor | |
70 | __switch_governor() | |
71 | { | |
72 | echo $2 > $CPUFREQROOT/$1/scaling_governor | |
73 | } | |
74 | ||
1e4c2830 VK |
75 | # param: |
76 | # $1: cpu, $2: governor | |
77 | __switch_governor_for_cpu() | |
78 | { | |
79 | echo $2 > $CPUROOT/$1/cpufreq/scaling_governor | |
80 | } | |
81 | ||
e66d5b67 VK |
82 | # SWITCH GOVERNORS |
83 | ||
84 | # $1: cpu, $2: governor | |
85 | switch_governor() | |
86 | { | |
87 | local filepath=$CPUFREQROOT/$1/scaling_available_governors | |
88 | ||
89 | # check if governor is available | |
90 | local found=$(cat $filepath | grep $2 | wc -l) | |
91 | if [ $found = 0 ]; then | |
92 | echo 1; | |
93 | return | |
94 | fi | |
95 | ||
96 | __switch_governor $1 $2 | |
97 | echo 0; | |
98 | } | |
99 | ||
100 | # $1: policy, $2: governor | |
101 | switch_show_governor() | |
102 | { | |
103 | cur_gov=find_current_governor | |
104 | if [ $cur_gov == "userspace" ]; then | |
105 | cur_freq=find_current_freq | |
106 | fi | |
107 | ||
108 | # switch governor | |
109 | __switch_governor $1 $2 | |
110 | ||
111 | printf "\nSwitched governor for $1 to $2\n\n" | |
112 | ||
113 | if [ $2 == "userspace" -o $2 == "powersave" -o $2 == "performance" ]; then | |
114 | printf "No files to read for $2 governor\n\n" | |
115 | return | |
116 | fi | |
117 | ||
118 | # show governor files | |
119 | local govpath=$(find_gov_directory $1 $2) | |
120 | read_cpufreq_files_in_dir $govpath | |
121 | } | |
122 | ||
123 | # $1: function to be called, $2: policy | |
124 | call_for_each_governor() | |
125 | { | |
126 | local filepath=$CPUFREQROOT/$2/scaling_available_governors | |
127 | ||
128 | # Exit if cpu isn't managed by cpufreq core | |
129 | if [ ! -f $filepath ]; then | |
130 | return; | |
131 | fi | |
132 | ||
133 | backup_governor $2 | |
134 | ||
135 | local governors=$(cat $filepath) | |
136 | printf "Available governors for $2: $governors\n" | |
137 | ||
138 | for governor in $governors; do | |
139 | $1 $2 $governor | |
140 | done | |
141 | ||
142 | restore_governor $2 | |
143 | } | |
144 | ||
145 | # $1: loop count | |
146 | shuffle_governors_for_all_cpus() | |
147 | { | |
148 | printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n" | |
149 | ||
150 | for i in `seq 1 $1`; do | |
151 | for_each_policy call_for_each_governor switch_show_governor | |
152 | done | |
153 | printf "%s\n\n" "------------------------------------------------" | |
154 | } |