1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# Please run as root 4 5# Kselftest framework requirement - SKIP code is 4. 6ksft_skip=4 7 8count_total=0 9count_pass=0 10count_fail=0 11count_skip=0 12exitcode=0 13 14usage() { 15 cat <<EOF 16usage: ${BASH_SOURCE[0]:-$0} [ options ] 17 18 -a: run all tests, including extra ones (other than destructive ones) 19 -t: specify specific categories to tests to run 20 -h: display this message 21 -n: disable TAP output 22 -d: run destructive tests 23 24The default behavior is to run required tests only. If -a is specified, 25will run all tests. 26 27Alternatively, specific groups tests can be run by passing a string 28to the -t argument containing one or more of the following categories 29separated by spaces: 30- mmap 31 tests for mmap(2) 32- gup_test 33 tests for gup 34- userfaultfd 35 tests for userfaultfd(2) 36- compaction 37 a test for the patch "Allow compaction of unevictable pages" 38- mlock 39 tests for mlock(2) 40- mremap 41 tests for mremap(2) 42- hugevm 43 tests for very large virtual address space 44- vmalloc 45 vmalloc smoke tests 46- hmm 47 hmm smoke tests 48- madv_populate 49 test memadvise(2) MADV_POPULATE_{READ,WRITE} options 50- memfd_secret 51 test memfd_secret(2) 52- process_mrelease 53 test process_mrelease(2) 54- ksm 55 ksm tests that do not require >=2 NUMA nodes 56- ksm_numa 57 ksm tests that require >=2 NUMA nodes 58- pkey 59 memory protection key tests 60- soft_dirty 61 test soft dirty page bit semantics 62- pagemap 63 test pagemap_scan IOCTL 64- cow 65 test copy-on-write semantics 66- thp 67 test transparent huge pages 68- hugetlb 69 test hugetlbfs huge pages 70- migration 71 invoke move_pages(2) to exercise the migration entry code 72 paths in the kernel 73- mkdirty 74 test handling of code that might set PTE/PMD dirty in 75 read-only VMAs 76- mdwe 77 test prctl(PR_SET_MDWE, ...) 78- page_frag 79 test handling of page fragment allocation and freeing 80 81example: ./run_vmtests.sh -t "hmm mmap ksm" 82EOF 83 exit 0 84} 85 86RUN_ALL=false 87RUN_DESTRUCTIVE=false 88TAP_PREFIX="# " 89 90while getopts "aht:n" OPT; do 91 case ${OPT} in 92 "a") RUN_ALL=true ;; 93 "h") usage ;; 94 "t") VM_SELFTEST_ITEMS=${OPTARG} ;; 95 "n") TAP_PREFIX= ;; 96 "d") RUN_DESTRUCTIVE=true ;; 97 esac 98done 99shift $((OPTIND -1)) 100 101# default behavior: run all tests 102VM_SELFTEST_ITEMS=${VM_SELFTEST_ITEMS:-default} 103 104test_selected() { 105 if [ "$VM_SELFTEST_ITEMS" == "default" ]; then 106 # If no VM_SELFTEST_ITEMS are specified, run all tests 107 return 0 108 fi 109 # If test selected argument is one of the test items 110 if [[ " ${VM_SELFTEST_ITEMS[*]} " =~ " ${1} " ]]; then 111 return 0 112 else 113 return 1 114 fi 115} 116 117run_gup_matrix() { 118 # -t: thp=on, -T: thp=off, -H: hugetlb=on 119 local hugetlb_mb=$(( needmem_KB / 1024 )) 120 121 for huge in -t -T "-H -m $hugetlb_mb"; do 122 # -u: gup-fast, -U: gup-basic, -a: pin-fast, -b: pin-basic, -L: pin-longterm 123 for test_cmd in -u -U -a -b -L; do 124 # -w: write=1, -W: write=0 125 for write in -w -W; do 126 # -S: shared 127 for share in -S " "; do 128 # -n: How many pages to fetch together? 512 is special 129 # because it's default thp size (or 2M on x86), 123 to 130 # just test partial gup when hit a huge in whatever form 131 for num in "-n 1" "-n 512" "-n 123"; do 132 CATEGORY="gup_test" run_test ./gup_test \ 133 $huge $test_cmd $write $share $num 134 done 135 done 136 done 137 done 138 done 139} 140 141# get huge pagesize and freepages from /proc/meminfo 142while read -r name size unit; do 143 if [ "$name" = "HugePages_Free:" ]; then 144 freepgs="$size" 145 fi 146 if [ "$name" = "Hugepagesize:" ]; then 147 hpgsize_KB="$size" 148 fi 149done < /proc/meminfo 150 151# Simple hugetlbfs tests have a hardcoded minimum requirement of 152# huge pages totaling 256MB (262144KB) in size. The userfaultfd 153# hugetlb test requires a minimum of 2 * nr_cpus huge pages. Take 154# both of these requirements into account and attempt to increase 155# number of huge pages available. 156nr_cpus=$(nproc) 157uffd_min_KB=$((hpgsize_KB * nr_cpus * 2)) 158hugetlb_min_KB=$((256 * 1024)) 159if [[ $uffd_min_KB -gt $hugetlb_min_KB ]]; then 160 needmem_KB=$uffd_min_KB 161else 162 needmem_KB=$hugetlb_min_KB 163fi 164 165# set proper nr_hugepages 166if [ -n "$freepgs" ] && [ -n "$hpgsize_KB" ]; then 167 nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 168 needpgs=$((needmem_KB / hpgsize_KB)) 169 tries=2 170 while [ "$tries" -gt 0 ] && [ "$freepgs" -lt "$needpgs" ]; do 171 lackpgs=$((needpgs - freepgs)) 172 echo 3 > /proc/sys/vm/drop_caches 173 if ! echo $((lackpgs + nr_hugepgs)) > /proc/sys/vm/nr_hugepages; then 174 echo "Please run this test as root" 175 exit $ksft_skip 176 fi 177 while read -r name size unit; do 178 if [ "$name" = "HugePages_Free:" ]; then 179 freepgs=$size 180 fi 181 done < /proc/meminfo 182 tries=$((tries - 1)) 183 done 184 if [ "$freepgs" -lt "$needpgs" ]; then 185 printf "Not enough huge pages available (%d < %d)\n" \ 186 "$freepgs" "$needpgs" 187 fi 188else 189 echo "no hugetlbfs support in kernel?" 190 exit 1 191fi 192 193# filter 64bit architectures 194ARCH64STR="arm64 mips64 parisc64 ppc64 ppc64le riscv64 s390x sparc64 x86_64" 195if [ -z "$ARCH" ]; then 196 ARCH=$(uname -m 2>/dev/null | sed -e 's/aarch64.*/arm64/') 197fi 198VADDR64=0 199echo "$ARCH64STR" | grep "$ARCH" &>/dev/null && VADDR64=1 200 201tap_prefix() { 202 sed -e "s/^/${TAP_PREFIX}/" 203} 204 205tap_output() { 206 if [[ ! -z "$TAP_PREFIX" ]]; then 207 read str 208 echo $str 209 fi 210} 211 212pretty_name() { 213 echo "$*" | sed -e 's/^\(bash \)\?\.\///' 214} 215 216# Usage: run_test [test binary] [arbitrary test arguments...] 217run_test() { 218 if test_selected ${CATEGORY}; then 219 # On memory constrainted systems some tests can fail to allocate hugepages. 220 # perform some cleanup before the test for a higher success rate. 221 if [ ${CATEGORY} == "thp" ] | [ ${CATEGORY} == "hugetlb" ]; then 222 echo 3 > /proc/sys/vm/drop_caches 223 sleep 2 224 echo 1 > /proc/sys/vm/compact_memory 225 sleep 2 226 fi 227 228 local test=$(pretty_name "$*") 229 local title="running $*" 230 local sep=$(echo -n "$title" | tr "[:graph:][:space:]" -) 231 printf "%s\n%s\n%s\n" "$sep" "$title" "$sep" | tap_prefix 232 233 ("$@" 2>&1) | tap_prefix 234 local ret=${PIPESTATUS[0]} 235 count_total=$(( count_total + 1 )) 236 if [ $ret -eq 0 ]; then 237 count_pass=$(( count_pass + 1 )) 238 echo "[PASS]" | tap_prefix 239 echo "ok ${count_total} ${test}" | tap_output 240 elif [ $ret -eq $ksft_skip ]; then 241 count_skip=$(( count_skip + 1 )) 242 echo "[SKIP]" | tap_prefix 243 echo "ok ${count_total} ${test} # SKIP" | tap_output 244 exitcode=$ksft_skip 245 else 246 count_fail=$(( count_fail + 1 )) 247 echo "[FAIL]" | tap_prefix 248 echo "not ok ${count_total} ${test} # exit=$ret" | tap_output 249 exitcode=1 250 fi 251 fi # test_selected 252} 253 254echo "TAP version 13" | tap_output 255 256CATEGORY="hugetlb" run_test ./hugepage-mmap 257 258shmmax=$(cat /proc/sys/kernel/shmmax) 259shmall=$(cat /proc/sys/kernel/shmall) 260echo 268435456 > /proc/sys/kernel/shmmax 261echo 4194304 > /proc/sys/kernel/shmall 262CATEGORY="hugetlb" run_test ./hugepage-shm 263echo "$shmmax" > /proc/sys/kernel/shmmax 264echo "$shmall" > /proc/sys/kernel/shmall 265 266CATEGORY="hugetlb" run_test ./map_hugetlb 267CATEGORY="hugetlb" run_test ./hugepage-mremap 268CATEGORY="hugetlb" run_test ./hugepage-vmemmap 269CATEGORY="hugetlb" run_test ./hugetlb-madvise 270CATEGORY="hugetlb" run_test ./hugetlb_dio 271 272nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) 273# For this test, we need one and just one huge page 274echo 1 > /proc/sys/vm/nr_hugepages 275CATEGORY="hugetlb" run_test ./hugetlb_fault_after_madv 276CATEGORY="hugetlb" run_test ./hugetlb_madv_vs_map 277# Restore the previous number of huge pages, since further tests rely on it 278echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages 279 280if test_selected "hugetlb"; then 281 echo "NOTE: These hugetlb tests provide minimal coverage. Use" | tap_prefix 282 echo " https://github.com/libhugetlbfs/libhugetlbfs.git for" | tap_prefix 283 echo " hugetlb regression testing." | tap_prefix 284fi 285 286CATEGORY="mmap" run_test ./map_fixed_noreplace 287 288if $RUN_ALL; then 289 run_gup_matrix 290else 291 # get_user_pages_fast() benchmark 292 CATEGORY="gup_test" run_test ./gup_test -u 293 # pin_user_pages_fast() benchmark 294 CATEGORY="gup_test" run_test ./gup_test -a 295fi 296# Dump pages 0, 19, and 4096, using pin_user_pages: 297CATEGORY="gup_test" run_test ./gup_test -ct -F 0x1 0 19 0x1000 298CATEGORY="gup_test" run_test ./gup_longterm 299 300CATEGORY="userfaultfd" run_test ./uffd-unit-tests 301uffd_stress_bin=./uffd-stress 302CATEGORY="userfaultfd" run_test ${uffd_stress_bin} anon 20 16 303# Hugetlb tests require source and destination huge pages. Pass in half 304# the size of the free pages we have, which is used for *each*. 305half_ufd_size_MB=$((freepgs / 2)) 306CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb "$half_ufd_size_MB" 32 307CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb-private "$half_ufd_size_MB" 32 308CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem 20 16 309CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem-private 20 16 310 311#cleanup 312echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages 313 314CATEGORY="compaction" run_test ./compaction_test 315 316if command -v sudo &> /dev/null; 317then 318 CATEGORY="mlock" run_test sudo -u nobody ./on-fault-limit 319else 320 echo "# SKIP ./on-fault-limit" 321fi 322 323CATEGORY="mmap" run_test ./map_populate 324 325CATEGORY="mlock" run_test ./mlock-random-test 326 327CATEGORY="mlock" run_test ./mlock2-tests 328 329CATEGORY="process_mrelease" run_test ./mrelease_test 330 331CATEGORY="mremap" run_test ./mremap_test 332 333CATEGORY="hugetlb" run_test ./thuge-gen 334CATEGORY="hugetlb" run_test ./charge_reserved_hugetlb.sh -cgroup-v2 335CATEGORY="hugetlb" run_test ./hugetlb_reparenting_test.sh -cgroup-v2 336if $RUN_DESTRUCTIVE; then 337nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) 338enable_soft_offline=$(cat /proc/sys/vm/enable_soft_offline) 339echo 8 > /proc/sys/vm/nr_hugepages 340CATEGORY="hugetlb" run_test ./hugetlb-soft-offline 341echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages 342echo "$enable_soft_offline" > /proc/sys/vm/enable_soft_offline 343CATEGORY="hugetlb" run_test ./hugetlb-read-hwpoison 344fi 345 346if [ $VADDR64 -ne 0 ]; then 347 348 # set overcommit_policy as OVERCOMMIT_ALWAYS so that kernel 349 # allows high virtual address allocation requests independent 350 # of platform's physical memory. 351 352 prev_policy=$(cat /proc/sys/vm/overcommit_memory) 353 echo 1 > /proc/sys/vm/overcommit_memory 354 CATEGORY="hugevm" run_test ./virtual_address_range 355 echo $prev_policy > /proc/sys/vm/overcommit_memory 356 357 # va high address boundary switch test 358 ARCH_ARM64="arm64" 359 prev_nr_hugepages=$(cat /proc/sys/vm/nr_hugepages) 360 if [ "$ARCH" == "$ARCH_ARM64" ]; then 361 echo 6 > /proc/sys/vm/nr_hugepages 362 fi 363 CATEGORY="hugevm" run_test bash ./va_high_addr_switch.sh 364 if [ "$ARCH" == "$ARCH_ARM64" ]; then 365 echo $prev_nr_hugepages > /proc/sys/vm/nr_hugepages 366 fi 367fi # VADDR64 368 369# vmalloc stability smoke test 370CATEGORY="vmalloc" run_test bash ./test_vmalloc.sh smoke 371 372CATEGORY="mremap" run_test ./mremap_dontunmap 373 374CATEGORY="hmm" run_test bash ./test_hmm.sh smoke 375 376# MADV_POPULATE_READ and MADV_POPULATE_WRITE tests 377CATEGORY="madv_populate" run_test ./madv_populate 378 379if [ -x ./memfd_secret ] 380then 381(echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix 382CATEGORY="memfd_secret" run_test ./memfd_secret 383fi 384 385# KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 386CATEGORY="ksm" run_test ./ksm_tests -H -s 100 387# KSM KSM_MERGE_TIME test with size of 100 388CATEGORY="ksm" run_test ./ksm_tests -P -s 100 389# KSM MADV_MERGEABLE test with 10 identical pages 390CATEGORY="ksm" run_test ./ksm_tests -M -p 10 391# KSM unmerge test 392CATEGORY="ksm" run_test ./ksm_tests -U 393# KSM test with 10 zero pages and use_zero_pages = 0 394CATEGORY="ksm" run_test ./ksm_tests -Z -p 10 -z 0 395# KSM test with 10 zero pages and use_zero_pages = 1 396CATEGORY="ksm" run_test ./ksm_tests -Z -p 10 -z 1 397# KSM test with 2 NUMA nodes and merge_across_nodes = 1 398CATEGORY="ksm_numa" run_test ./ksm_tests -N -m 1 399# KSM test with 2 NUMA nodes and merge_across_nodes = 0 400CATEGORY="ksm_numa" run_test ./ksm_tests -N -m 0 401 402CATEGORY="ksm" run_test ./ksm_functional_tests 403 404# protection_keys tests 405nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 406if [ -x ./protection_keys_32 ] 407then 408 CATEGORY="pkey" run_test ./protection_keys_32 409fi 410 411if [ -x ./protection_keys_64 ] 412then 413 CATEGORY="pkey" run_test ./protection_keys_64 414fi 415echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages 416 417if [ -x ./soft-dirty ] 418then 419 CATEGORY="soft_dirty" run_test ./soft-dirty 420fi 421 422CATEGORY="pagemap" run_test ./pagemap_ioctl 423 424# COW tests 425CATEGORY="cow" run_test ./cow 426 427CATEGORY="thp" run_test ./khugepaged 428 429CATEGORY="thp" run_test ./khugepaged -s 2 430 431CATEGORY="thp" run_test ./transhuge-stress -d 20 432 433# Try to create XFS if not provided 434if [ -z "${SPLIT_HUGE_PAGE_TEST_XFS_PATH}" ]; then 435 if test_selected "thp"; then 436 if grep xfs /proc/filesystems &>/dev/null; then 437 XFS_IMG=$(mktemp /tmp/xfs_img_XXXXXX) 438 SPLIT_HUGE_PAGE_TEST_XFS_PATH=$(mktemp -d /tmp/xfs_dir_XXXXXX) 439 truncate -s 314572800 ${XFS_IMG} 440 mkfs.xfs -q ${XFS_IMG} 441 mount -o loop ${XFS_IMG} ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 442 MOUNTED_XFS=1 443 fi 444 fi 445fi 446 447CATEGORY="thp" run_test ./split_huge_page_test ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 448 449if [ -n "${MOUNTED_XFS}" ]; then 450 umount ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 451 rmdir ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 452 rm -f ${XFS_IMG} 453fi 454 455CATEGORY="migration" run_test ./migration 456 457CATEGORY="mkdirty" run_test ./mkdirty 458 459CATEGORY="mdwe" run_test ./mdwe_test 460 461CATEGORY="page_frag" run_test ./test_page_frag.sh smoke 462 463CATEGORY="page_frag" run_test ./test_page_frag.sh aligned 464 465CATEGORY="page_frag" run_test ./test_page_frag.sh nonaligned 466 467echo "SUMMARY: PASS=${count_pass} SKIP=${count_skip} FAIL=${count_fail}" | tap_prefix 468echo "1..${count_total}" | tap_output 469 470exit $exitcode 471