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1#!/bin/bash
2
3# protect against multiple inclusion
4if [ $FILE_CPUFREQ ]; then
5	return 0
6else
7	FILE_CPUFREQ=DONE
8fi
9
10source cpu.sh
11
12
13# $1: cpu
14cpu_should_have_cpufreq_directory()
15{
16	if [ ! -d $CPUROOT/$1/cpufreq ]; then
17		printf "Warning: No cpufreq directory present for $1\n"
18	fi
19}
20
21cpu_should_not_have_cpufreq_directory()
22{
23	if [ -d $CPUROOT/$1/cpufreq ]; then
24		printf "Warning: cpufreq directory present for $1\n"
25	fi
26}
27
28for_each_policy()
29{
30	policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
31	for policy in $policies; do
32		$@ $policy
33	done
34}
35
36for_each_policy_concurrent()
37{
38	policies=$(ls $CPUFREQROOT| grep "policy[0-9].*")
39	for policy in $policies; do
40		$@ $policy &
41	done
42}
43
44# $1: Path
45read_cpufreq_files_in_dir()
46{
47	local files=`ls $1`
48
49	printf "Printing directory: $1\n\n"
50
51	for file in $files; do
52		if [ -f $1/$file ]; then
53			printf "$file:"
54			cat $1/$file
55		else
56			printf "\n"
57			read_cpufreq_files_in_dir "$1/$file"
58		fi
59	done
60	printf "\n"
61}
62
63
64read_all_cpufreq_files()
65{
66	printf "** Test: Running ${FUNCNAME[0]} **\n\n"
67
68	read_cpufreq_files_in_dir $CPUFREQROOT
69
70	printf "%s\n\n" "------------------------------------------------"
71}
72
73
74# UPDATE CPUFREQ FILES
75
76# $1: directory path
77update_cpufreq_files_in_dir()
78{
79	local files=`ls $1`
80
81	printf "Updating directory: $1\n\n"
82
83	for file in $files; do
84		if [ -f $1/$file ]; then
85			# file is writable ?
86			local wfile=$(ls -l $1/$file | awk '$1 ~ /^.*w.*/ { print $NF; }')
87
88			if [ ! -z $wfile ]; then
89				# scaling_setspeed is a special file and we
90				# should skip updating it
91				if [ $file != "scaling_setspeed" ]; then
92					local val=$(cat $1/$file)
93					printf "Writing $val to: $file\n"
94					echo $val > $1/$file
95				fi
96			fi
97		else
98			printf "\n"
99			update_cpufreq_files_in_dir "$1/$file"
100		fi
101	done
102
103	printf "\n"
104}
105
106# Update all writable files with their existing values
107update_all_cpufreq_files()
108{
109	printf "** Test: Running ${FUNCNAME[0]} **\n\n"
110
111	update_cpufreq_files_in_dir $CPUFREQROOT
112
113	printf "%s\n\n" "------------------------------------------------"
114}
115
116
117# CHANGE CPU FREQUENCIES
118
119# $1: policy
120find_current_freq()
121{
122	cat $CPUFREQROOT/$1/scaling_cur_freq
123}
124
125# $1: policy
126# $2: frequency
127set_cpu_frequency()
128{
129	printf "Change frequency for $1 to $2\n"
130	echo $2 > $CPUFREQROOT/$1/scaling_setspeed
131}
132
133# $1: policy
134test_all_frequencies()
135{
136	local filepath="$CPUFREQROOT/$1"
137
138	backup_governor $1
139
140	local found=$(switch_governor $1 "userspace")
141	if [ $found = 1 ]; then
142		printf "${FUNCNAME[0]}: userspace governor not available for: $1\n"
143		return;
144	fi
145
146	printf "Switched governor for $1 to userspace\n\n"
147
148	local freqs=$(cat $filepath/scaling_available_frequencies)
149	printf "Available frequencies for $1: $freqs\n\n"
150
151	# Set all frequencies one-by-one
152	for freq in $freqs; do
153		set_cpu_frequency $1 $freq
154	done
155
156	printf "\n"
157
158	restore_governor $1
159}
160
161# $1: loop count
162shuffle_frequency_for_all_cpus()
163{
164	printf "** Test: Running ${FUNCNAME[0]} for $1 loops **\n\n"
165
166	for i in `seq 1 $1`; do
167		for_each_policy test_all_frequencies
168	done
169	printf "\n%s\n\n" "------------------------------------------------"
170}
171
172# Basic cpufreq tests
173cpufreq_basic_tests()
174{
175	printf "*** RUNNING CPUFREQ SANITY TESTS ***\n"
176	printf "====================================\n\n"
177
178	count=$(count_cpufreq_managed_cpus)
179	if [ $count = 0 ]; then
180		printf "No cpu is managed by cpufreq core, exiting\n"
181		exit;
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
205do_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			echo $filename > $SYSFS/power/state
235			printf "Came out of $1\n"
236
237			printf "Do basic tests after finishing $1 to verify cpufreq state\n\n"
238			cpufreq_basic_tests
239		done
240	fi
241}
242