1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 # protect against multiple inclusion
5 if [ $FILE_CPUFREQ ]; then
6 return 0
7 else
8 FILE_CPUFREQ=DONE
9 fi
10
11 source cpu.sh
12
13
14 # $1: cpu
15 cpu_should_have_cpufreq_directory()
16 {
17 if [ ! -d $CPUROOT/$1/cpufreq ]; then
18 printf "Warning: No cpufreq directory present for $1\n"
19 fi
20 }
21
22 cpu_should_not_have_cpufreq_directory()
23 {
24 if [ -d $CPUROOT/$1/cpufreq ]; then
25 printf "Warning: cpufreq directory present for $1\n"
26 fi
27 }
28
29 for_each_policy()
30 {
31 policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
32 for policy in $policies; do
33 $@ $policy
34 done
35 }
36
37 for_each_policy_concurrent()
38 {
39 policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
40 for policy in $policies; do
41 $@ $policy &
42 done
43 }
44
45 # $1: Path
46 read_cpufreq_files_in_dir()
47 {
48 local files=`ls $1`
49
50 printf "Printing directory: $1\n\n"
51
52 for file in $files; do
53 if [ -f $1/$file ]; then
54 printf "$file:"
55 cat $1/$file
56 else
57 printf "\n"
58 read_cpufreq_files_in_dir "$1/$file"
59 fi
60 done
61 printf "\n"
62 }
63
64
65 read_all_cpufreq_files()
66 {
67 printf "** Test: Running ${FUNCNAME[0]} **\n\n"
68
69 read_cpufreq_files_in_dir $CPUFREQROOT
70
71 printf "%s\n\n" "------------------------------------------------"
72 }
73
74
75 # UPDATE CPUFREQ FILES
76
77 # $1: directory path
78 update_cpufreq_files_in_dir()
79 {
80 local files=`ls $1`
81
82 printf "Updating directory: $1\n\n"
83
84 for file in $files; do
85 if [ -f $1/$file ]; then
86 # file is writable ?
87 local wfile=$(ls -l $1/$file | awk '$1 ~ /^.*w.*/ { print $NF; }')
88
89 if [ ! -z $wfile ]; then
90 # scaling_setspeed is a special file and we
91 # should skip updating it
92 if [ $file != "scaling_setspeed" ]; then
93 local val=$(cat $1/$file)
94 printf "Writing $val to: $file\n"
95 echo $val > $1/$file
96 fi
97 fi
98 else
99 printf "\n"
100 update_cpufreq_files_in_dir "$1/$file"
101 fi
102 done
103
104 printf "\n"
105 }
106
107 # Update all writable files with their existing values
108 update_all_cpufreq_files()
109 {
110 printf "** Test: Running ${FUNCNAME[0]} **\n\n"
111
112 update_cpufreq_files_in_dir $CPUFREQROOT
113
114 printf "%s\n\n" "------------------------------------------------"
115 }
116
117
118 # CHANGE CPU FREQUENCIES
119
120 # $1: policy
121 find_current_freq()
122 {
123 cat $CPUFREQROOT/$1/scaling_cur_freq
124 }
125
126 # $1: policy
127 # $2: frequency
128 set_cpu_frequency()
129 {
130 printf "Change frequency for $1 to $2\n"
131 echo $2 > $CPUFREQROOT/$1/scaling_setspeed
132 }
133
134 # $1: policy
135 test_all_frequencies()
136 {
137 local filepath="$CPUFREQROOT/$1"
138
139 backup_governor $1
140
141 local found=$(switch_governor $1 "userspace")
142 if [ $found = 1 ]; then
143 printf "${FUNCNAME[0]}: userspace governor not available for: $1\n"
144 return;
145 fi
146
147 printf "Switched governor for $1 to userspace\n\n"
148
149 local freqs=$(cat $filepath/scaling_available_frequencies)
150 printf "Available frequencies for $1: $freqs\n\n"
151
152 # Set all frequencies one-by-one
153 for freq in $freqs; do
154 set_cpu_frequency $1 $freq
155 done
156
157 printf "\n"
158
159 restore_governor $1
160 }
161
162 # $1: loop count
163 shuffle_frequency_for_all_cpus()
164 {
165 printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n"
166
167 for i in `seq 1 $1`; do
168 for_each_policy test_all_frequencies
169 done
170 printf "\n%s\n\n" "------------------------------------------------"
171 }
172
173 # Basic cpufreq tests
174 cpufreq_basic_tests()
175 {
176 printf "*** RUNNING CPUFREQ SANITY TESTS ***\n"
177 printf "====================================\n\n"
178
179 count=$(count_cpufreq_managed_cpus)
180 if [ $count = 0 ]; then
181 ktap_exit_fail_msg "No cpu is managed by cpufreq core, exiting\n"
182 else
183 printf "CPUFreq manages: $count CPUs\n\n"
184 fi
185
186 # Detect & print which CPUs are not managed by cpufreq
187 print_unmanaged_cpus
188
189 # read/update all cpufreq files
190 read_all_cpufreq_files
191 update_all_cpufreq_files
192
193 # hotplug cpus
194 reboot_cpus 5
195
196 # Test all frequencies
197 shuffle_frequency_for_all_cpus 2
198
199 # Test all governors
200 shuffle_governors_for_all_cpus 1
201 }
202
203 # Suspend/resume
204 # $1: "suspend" or "hibernate", $2: loop count
205 do_suspend()
206 {
207 printf "** Test: Running ${FUNCNAME[0]}: Trying $1 for $2 loops **\n\n"
208
209 # Is the directory available
210 if [ ! -d $SYSFS/power/ -o ! -f $SYSFS/power/state ]; then
211 printf "$SYSFS/power/state not available\n"
212 return 1
213 fi
214
215 if [ $1 = "suspend" ]; then
216 filename="mem"
217 elif [ $1 = "hibernate" ]; then
218 filename="disk"
219 else
220 printf "$1 is not a valid option\n"
221 return 1
222 fi
223
224 if [ -n $filename ]; then
225 present=$(cat $SYSFS/power/state | grep $filename)
226
227 if [ -z "$present" ]; then
228 printf "Tried to $1 but $filename isn't present in $SYSFS/power/state\n"
229 return 1;
230 fi
231
232 for i in `seq 1 $2`; do
233 printf "Starting $1\n"
234
235 if [ "$3" = "rtc" ]; then
236 if ! command -v rtcwake &> /dev/null; then
237 printf "rtcwake could not be found, please install it.\n"
238 return 1
239 fi
240
241 rtcwake -m $filename -s 15
242
243 if [ $? -ne 0 ]; then
244 printf "Failed to suspend using RTC wake alarm\n"
245 return 1
246 fi
247 fi
248
249 echo $filename > $SYSFS/power/state
250 printf "Came out of $1\n"
251
252 printf "Do basic tests after finishing $1 to verify cpufreq state\n\n"
253 cpufreq_basic_tests
254 done
255 fi
256 }
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