Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# Kselftest frmework requirement - SKIP code is 4.
5ksft_skip=4
6
7ensure_write_succ()
8{
9 file=$1
10 content=$2
11 reason=$3
12
13 if ! echo "$content" > "$file"
14 then
15 echo "writing $content to $file failed"
16 echo "expected success because $reason"
17 exit 1
18 fi
19}
20
21ensure_write_fail()
22{
23 file=$1
24 content=$2
25 reason=$3
26
27 if (echo "$content" > "$file") 2> /dev/null
28 then
29 echo "writing $content to $file succeed ($fail_reason)"
30 echo "expected failure because $reason"
31 exit 1
32 fi
33}
34
35ensure_dir()
36{
37 dir=$1
38 to_ensure=$2
39 if [ "$to_ensure" = "exist" ] && [ ! -d "$dir" ]
40 then
41 echo "$dir dir is expected but not found"
42 exit 1
43 elif [ "$to_ensure" = "not_exist" ] && [ -d "$dir" ]
44 then
45 echo "$dir dir is not expected but found"
46 exit 1
47 fi
48}
49
50ensure_file()
51{
52 file=$1
53 to_ensure=$2
54 permission=$3
55 if [ "$to_ensure" = "exist" ]
56 then
57 if [ ! -f "$file" ]
58 then
59 echo "$file is expected but not found"
60 exit 1
61 fi
62 perm=$(stat -c "%a" "$file")
63 if [ ! "$perm" = "$permission" ]
64 then
65 echo "$file permission: expected $permission but $perm"
66 exit 1
67 fi
68 elif [ "$to_ensure" = "not_exist" ] && [ -f "$dir" ]
69 then
70 echo "$file is not expected but found"
71 exit 1
72 fi
73}
74
75test_range()
76{
77 range_dir=$1
78 ensure_dir "$range_dir" "exist"
79 ensure_file "$range_dir/min" "exist" 600
80 ensure_file "$range_dir/max" "exist" 600
81}
82
83test_tried_regions()
84{
85 tried_regions_dir=$1
86 ensure_dir "$tried_regions_dir" "exist"
87 ensure_file "$tried_regions_dir/total_bytes" "exist" "400"
88}
89
90test_stats()
91{
92 stats_dir=$1
93 ensure_dir "$stats_dir" "exist"
94 for f in nr_tried sz_tried nr_applied sz_applied qt_exceeds
95 do
96 ensure_file "$stats_dir/$f" "exist" "400"
97 done
98}
99
100test_filter()
101{
102 filter_dir=$1
103 ensure_file "$filter_dir/type" "exist" "600"
104 ensure_write_succ "$filter_dir/type" "anon" "valid input"
105 ensure_write_succ "$filter_dir/type" "memcg" "valid input"
106 ensure_write_succ "$filter_dir/type" "addr" "valid input"
107 ensure_write_succ "$filter_dir/type" "target" "valid input"
108 ensure_write_fail "$filter_dir/type" "foo" "invalid input"
109 ensure_file "$filter_dir/matching" "exist" "600"
110 ensure_file "$filter_dir/memcg_path" "exist" "600"
111 ensure_file "$filter_dir/addr_start" "exist" "600"
112 ensure_file "$filter_dir/addr_end" "exist" "600"
113 ensure_file "$filter_dir/damon_target_idx" "exist" "600"
114}
115
116test_filters()
117{
118 filters_dir=$1
119 ensure_dir "$filters_dir" "exist"
120 ensure_file "$filters_dir/nr_filters" "exist" "600"
121 ensure_write_succ "$filters_dir/nr_filters" "1" "valid input"
122 test_filter "$filters_dir/0"
123
124 ensure_write_succ "$filters_dir/nr_filters" "2" "valid input"
125 test_filter "$filters_dir/0"
126 test_filter "$filters_dir/1"
127
128 ensure_write_succ "$filters_dir/nr_filters" "0" "valid input"
129 ensure_dir "$filters_dir/0" "not_exist"
130 ensure_dir "$filters_dir/1" "not_exist"
131}
132
133test_watermarks()
134{
135 watermarks_dir=$1
136 ensure_dir "$watermarks_dir" "exist"
137 ensure_file "$watermarks_dir/metric" "exist" "600"
138 ensure_file "$watermarks_dir/interval_us" "exist" "600"
139 ensure_file "$watermarks_dir/high" "exist" "600"
140 ensure_file "$watermarks_dir/mid" "exist" "600"
141 ensure_file "$watermarks_dir/low" "exist" "600"
142}
143
144test_weights()
145{
146 weights_dir=$1
147 ensure_dir "$weights_dir" "exist"
148 ensure_file "$weights_dir/sz_permil" "exist" "600"
149 ensure_file "$weights_dir/nr_accesses_permil" "exist" "600"
150 ensure_file "$weights_dir/age_permil" "exist" "600"
151}
152
153test_quotas()
154{
155 quotas_dir=$1
156 ensure_dir "$quotas_dir" "exist"
157 ensure_file "$quotas_dir/ms" "exist" 600
158 ensure_file "$quotas_dir/bytes" "exist" 600
159 ensure_file "$quotas_dir/reset_interval_ms" "exist" 600
160 test_weights "$quotas_dir/weights"
161}
162
163test_access_pattern()
164{
165 access_pattern_dir=$1
166 ensure_dir "$access_pattern_dir" "exist"
167 test_range "$access_pattern_dir/age"
168 test_range "$access_pattern_dir/nr_accesses"
169 test_range "$access_pattern_dir/sz"
170}
171
172test_scheme()
173{
174 scheme_dir=$1
175 ensure_dir "$scheme_dir" "exist"
176 ensure_file "$scheme_dir/action" "exist" "600"
177 test_access_pattern "$scheme_dir/access_pattern"
178 test_quotas "$scheme_dir/quotas"
179 test_watermarks "$scheme_dir/watermarks"
180 test_filters "$scheme_dir/filters"
181 test_stats "$scheme_dir/stats"
182 test_tried_regions "$scheme_dir/tried_regions"
183}
184
185test_schemes()
186{
187 schemes_dir=$1
188 ensure_dir "$schemes_dir" "exist"
189 ensure_file "$schemes_dir/nr_schemes" "exist" 600
190
191 ensure_write_succ "$schemes_dir/nr_schemes" "1" "valid input"
192 test_scheme "$schemes_dir/0"
193
194 ensure_write_succ "$schemes_dir/nr_schemes" "2" "valid input"
195 test_scheme "$schemes_dir/0"
196 test_scheme "$schemes_dir/1"
197
198 ensure_write_succ "$schemes_dir/nr_schemes" "0" "valid input"
199 ensure_dir "$schemes_dir/0" "not_exist"
200 ensure_dir "$schemes_dir/1" "not_exist"
201}
202
203test_region()
204{
205 region_dir=$1
206 ensure_dir "$region_dir" "exist"
207 ensure_file "$region_dir/start" "exist" 600
208 ensure_file "$region_dir/end" "exist" 600
209}
210
211test_regions()
212{
213 regions_dir=$1
214 ensure_dir "$regions_dir" "exist"
215 ensure_file "$regions_dir/nr_regions" "exist" 600
216
217 ensure_write_succ "$regions_dir/nr_regions" "1" "valid input"
218 test_region "$regions_dir/0"
219
220 ensure_write_succ "$regions_dir/nr_regions" "2" "valid input"
221 test_region "$regions_dir/0"
222 test_region "$regions_dir/1"
223
224 ensure_write_succ "$regions_dir/nr_regions" "0" "valid input"
225 ensure_dir "$regions_dir/0" "not_exist"
226 ensure_dir "$regions_dir/1" "not_exist"
227}
228
229test_target()
230{
231 target_dir=$1
232 ensure_dir "$target_dir" "exist"
233 ensure_file "$target_dir/pid_target" "exist" "600"
234 test_regions "$target_dir/regions"
235}
236
237test_targets()
238{
239 targets_dir=$1
240 ensure_dir "$targets_dir" "exist"
241 ensure_file "$targets_dir/nr_targets" "exist" 600
242
243 ensure_write_succ "$targets_dir/nr_targets" "1" "valid input"
244 test_target "$targets_dir/0"
245
246 ensure_write_succ "$targets_dir/nr_targets" "2" "valid input"
247 test_target "$targets_dir/0"
248 test_target "$targets_dir/1"
249
250 ensure_write_succ "$targets_dir/nr_targets" "0" "valid input"
251 ensure_dir "$targets_dir/0" "not_exist"
252 ensure_dir "$targets_dir/1" "not_exist"
253}
254
255test_intervals()
256{
257 intervals_dir=$1
258 ensure_dir "$intervals_dir" "exist"
259 ensure_file "$intervals_dir/aggr_us" "exist" "600"
260 ensure_file "$intervals_dir/sample_us" "exist" "600"
261 ensure_file "$intervals_dir/update_us" "exist" "600"
262}
263
264test_monitoring_attrs()
265{
266 monitoring_attrs_dir=$1
267 ensure_dir "$monitoring_attrs_dir" "exist"
268 test_intervals "$monitoring_attrs_dir/intervals"
269 test_range "$monitoring_attrs_dir/nr_regions"
270}
271
272test_context()
273{
274 context_dir=$1
275 ensure_dir "$context_dir" "exist"
276 ensure_file "$context_dir/avail_operations" "exit" 400
277 ensure_file "$context_dir/operations" "exist" 600
278 test_monitoring_attrs "$context_dir/monitoring_attrs"
279 test_targets "$context_dir/targets"
280 test_schemes "$context_dir/schemes"
281}
282
283test_contexts()
284{
285 contexts_dir=$1
286 ensure_dir "$contexts_dir" "exist"
287 ensure_file "$contexts_dir/nr_contexts" "exist" 600
288
289 ensure_write_succ "$contexts_dir/nr_contexts" "1" "valid input"
290 test_context "$contexts_dir/0"
291
292 ensure_write_fail "$contexts_dir/nr_contexts" "2" "only 0/1 are supported"
293 test_context "$contexts_dir/0"
294
295 ensure_write_succ "$contexts_dir/nr_contexts" "0" "valid input"
296 ensure_dir "$contexts_dir/0" "not_exist"
297}
298
299test_kdamond()
300{
301 kdamond_dir=$1
302 ensure_dir "$kdamond_dir" "exist"
303 ensure_file "$kdamond_dir/state" "exist" "600"
304 ensure_file "$kdamond_dir/pid" "exist" 400
305 test_contexts "$kdamond_dir/contexts"
306}
307
308test_kdamonds()
309{
310 kdamonds_dir=$1
311 ensure_dir "$kdamonds_dir" "exist"
312
313 ensure_file "$kdamonds_dir/nr_kdamonds" "exist" "600"
314
315 ensure_write_succ "$kdamonds_dir/nr_kdamonds" "1" "valid input"
316 test_kdamond "$kdamonds_dir/0"
317
318 ensure_write_succ "$kdamonds_dir/nr_kdamonds" "2" "valid input"
319 test_kdamond "$kdamonds_dir/0"
320 test_kdamond "$kdamonds_dir/1"
321
322 ensure_write_succ "$kdamonds_dir/nr_kdamonds" "0" "valid input"
323 ensure_dir "$kdamonds_dir/0" "not_exist"
324 ensure_dir "$kdamonds_dir/1" "not_exist"
325}
326
327test_damon_sysfs()
328{
329 damon_sysfs=$1
330 if [ ! -d "$damon_sysfs" ]
331 then
332 echo "$damon_sysfs not found"
333 exit $ksft_skip
334 fi
335
336 test_kdamonds "$damon_sysfs/kdamonds"
337}
338
339check_dependencies()
340{
341 if [ $EUID -ne 0 ]
342 then
343 echo "Run as root"
344 exit $ksft_skip
345 fi
346}
347
348check_dependencies
349test_damon_sysfs "/sys/kernel/mm/damon/admin"