sysfs.sh (6855B)
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" 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_stats() 84{ 85 stats_dir=$1 86 ensure_dir "$stats_dir" "exist" 87 for f in nr_tried sz_tried nr_applied sz_applied qt_exceeds 88 do 89 ensure_file "$stats_dir/$f" "exist" "400" 90 done 91} 92 93test_watermarks() 94{ 95 watermarks_dir=$1 96 ensure_dir "$watermarks_dir" "exist" 97 ensure_file "$watermarks_dir/metric" "exist" "600" 98 ensure_file "$watermarks_dir/interval_us" "exist" "600" 99 ensure_file "$watermarks_dir/high" "exist" "600" 100 ensure_file "$watermarks_dir/mid" "exist" "600" 101 ensure_file "$watermarks_dir/low" "exist" "600" 102} 103 104test_weights() 105{ 106 weights_dir=$1 107 ensure_dir "$weights_dir" "exist" 108 ensure_file "$weights_dir/sz_permil" "exist" "600" 109 ensure_file "$weights_dir/nr_accesses_permil" "exist" "600" 110 ensure_file "$weights_dir/age_permil" "exist" "600" 111} 112 113test_quotas() 114{ 115 quotas_dir=$1 116 ensure_dir "$quotas_dir" "exist" 117 ensure_file "$quotas_dir/ms" "exist" 600 118 ensure_file "$quotas_dir/bytes" "exist" 600 119 ensure_file "$quotas_dir/reset_interval_ms" "exist" 600 120 test_weights "$quotas_dir/weights" 121} 122 123test_access_pattern() 124{ 125 access_pattern_dir=$1 126 ensure_dir "$access_pattern_dir" "exist" 127 test_range "$access_pattern_dir/age" 128 test_range "$access_pattern_dir/nr_accesses" 129 test_range "$access_pattern_dir/sz" 130} 131 132test_scheme() 133{ 134 scheme_dir=$1 135 ensure_dir "$scheme_dir" "exist" 136 ensure_file "$scheme_dir/action" "exist" "600" 137 test_access_pattern "$scheme_dir/access_pattern" 138 test_quotas "$scheme_dir/quotas" 139 test_watermarks "$scheme_dir/watermarks" 140 test_stats "$scheme_dir/stats" 141} 142 143test_schemes() 144{ 145 schemes_dir=$1 146 ensure_dir "$schemes_dir" "exist" 147 ensure_file "$schemes_dir/nr_schemes" "exist" 600 148 149 ensure_write_succ "$schemes_dir/nr_schemes" "1" "valid input" 150 test_scheme "$schemes_dir/0" 151 152 ensure_write_succ "$schemes_dir/nr_schemes" "2" "valid input" 153 test_scheme "$schemes_dir/0" 154 test_scheme "$schemes_dir/1" 155 156 ensure_write_succ "$schemes_dir/nr_schemes" "0" "valid input" 157 ensure_dir "$schemes_dir/0" "not_exist" 158 ensure_dir "$schemes_dir/1" "not_exist" 159} 160 161test_region() 162{ 163 region_dir=$1 164 ensure_dir "$region_dir" "exist" 165 ensure_file "$region_dir/start" "exist" 600 166 ensure_file "$region_dir/end" "exist" 600 167} 168 169test_regions() 170{ 171 regions_dir=$1 172 ensure_dir "$regions_dir" "exist" 173 ensure_file "$regions_dir/nr_regions" "exist" 600 174 175 ensure_write_succ "$regions_dir/nr_regions" "1" "valid input" 176 test_region "$regions_dir/0" 177 178 ensure_write_succ "$regions_dir/nr_regions" "2" "valid input" 179 test_region "$regions_dir/0" 180 test_region "$regions_dir/1" 181 182 ensure_write_succ "$regions_dir/nr_regions" "0" "valid input" 183 ensure_dir "$regions_dir/0" "not_exist" 184 ensure_dir "$regions_dir/1" "not_exist" 185} 186 187test_target() 188{ 189 target_dir=$1 190 ensure_dir "$target_dir" "exist" 191 ensure_file "$target_dir/pid_target" "exist" "600" 192 test_regions "$target_dir/regions" 193} 194 195test_targets() 196{ 197 targets_dir=$1 198 ensure_dir "$targets_dir" "exist" 199 ensure_file "$targets_dir/nr_targets" "exist" 600 200 201 ensure_write_succ "$targets_dir/nr_targets" "1" "valid input" 202 test_target "$targets_dir/0" 203 204 ensure_write_succ "$targets_dir/nr_targets" "2" "valid input" 205 test_target "$targets_dir/0" 206 test_target "$targets_dir/1" 207 208 ensure_write_succ "$targets_dir/nr_targets" "0" "valid input" 209 ensure_dir "$targets_dir/0" "not_exist" 210 ensure_dir "$targets_dir/1" "not_exist" 211} 212 213test_intervals() 214{ 215 intervals_dir=$1 216 ensure_dir "$intervals_dir" "exist" 217 ensure_file "$intervals_dir/aggr_us" "exist" "600" 218 ensure_file "$intervals_dir/sample_us" "exist" "600" 219 ensure_file "$intervals_dir/update_us" "exist" "600" 220} 221 222test_monitoring_attrs() 223{ 224 monitoring_attrs_dir=$1 225 ensure_dir "$monitoring_attrs_dir" "exist" 226 test_intervals "$monitoring_attrs_dir/intervals" 227 test_range "$monitoring_attrs_dir/nr_regions" 228} 229 230test_context() 231{ 232 context_dir=$1 233 ensure_dir "$context_dir" "exist" 234 ensure_file "$context_dir/avail_operations" "exit" 400 235 ensure_file "$context_dir/operations" "exist" 600 236 test_monitoring_attrs "$context_dir/monitoring_attrs" 237 test_targets "$context_dir/targets" 238 test_schemes "$context_dir/schemes" 239} 240 241test_contexts() 242{ 243 contexts_dir=$1 244 ensure_dir "$contexts_dir" "exist" 245 ensure_file "$contexts_dir/nr_contexts" "exist" 600 246 247 ensure_write_succ "$contexts_dir/nr_contexts" "1" "valid input" 248 test_context "$contexts_dir/0" 249 250 ensure_write_fail "$contexts_dir/nr_contexts" "2" "only 0/1 are supported" 251 test_context "$contexts_dir/0" 252 253 ensure_write_succ "$contexts_dir/nr_contexts" "0" "valid input" 254 ensure_dir "$contexts_dir/0" "not_exist" 255} 256 257test_kdamond() 258{ 259 kdamond_dir=$1 260 ensure_dir "$kdamond_dir" "exist" 261 ensure_file "$kdamond_dir/state" "exist" "600" 262 ensure_file "$kdamond_dir/pid" "exist" 400 263 test_contexts "$kdamond_dir/contexts" 264} 265 266test_kdamonds() 267{ 268 kdamonds_dir=$1 269 ensure_dir "$kdamonds_dir" "exist" 270 271 ensure_file "$kdamonds_dir/nr_kdamonds" "exist" "600" 272 273 ensure_write_succ "$kdamonds_dir/nr_kdamonds" "1" "valid input" 274 test_kdamond "$kdamonds_dir/0" 275 276 ensure_write_succ "$kdamonds_dir/nr_kdamonds" "2" "valid input" 277 test_kdamond "$kdamonds_dir/0" 278 test_kdamond "$kdamonds_dir/1" 279 280 ensure_write_succ "$kdamonds_dir/nr_kdamonds" "0" "valid input" 281 ensure_dir "$kdamonds_dir/0" "not_exist" 282 ensure_dir "$kdamonds_dir/1" "not_exist" 283} 284 285test_damon_sysfs() 286{ 287 damon_sysfs=$1 288 if [ ! -d "$damon_sysfs" ] 289 then 290 echo "$damon_sysfs not found" 291 exit $ksft_skip 292 fi 293 294 test_kdamonds "$damon_sysfs/kdamonds" 295} 296 297check_dependencies() 298{ 299 if [ $EUID -ne 0 ] 300 then 301 echo "Run as root" 302 exit $ksft_skip 303 fi 304} 305 306check_dependencies 307test_damon_sysfs "/sys/kernel/mm/damon/admin"