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_guard 49 test madvise(2) MADV_GUARD_INSTALL and MADV_GUARD_REMOVE options 50- madv_populate 51 test memadvise(2) MADV_POPULATE_{READ,WRITE} options 52- memfd_secret 53 test memfd_secret(2) 54- process_mrelease 55 test process_mrelease(2) 56- ksm 57 ksm tests that do not require >=2 NUMA nodes 58- ksm_numa 59 ksm tests that require >=2 NUMA nodes 60- pkey 61 memory protection key tests 62- soft_dirty 63 test soft dirty page bit semantics 64- pagemap 65 test pagemap_scan IOCTL 66- pfnmap 67 tests for VM_PFNMAP handling 68- process_madv 69 test for process_madv 70- cow 71 test copy-on-write semantics 72- thp 73 test transparent huge pages 74- hugetlb 75 test hugetlbfs huge pages 76- migration 77 invoke move_pages(2) to exercise the migration entry code 78 paths in the kernel 79- mkdirty 80 test handling of code that might set PTE/PMD dirty in 81 read-only VMAs 82- mdwe 83 test prctl(PR_SET_MDWE, ...) 84- page_frag 85 test handling of page fragment allocation and freeing 86- vma_merge 87 test VMA merge cases behave as expected 88 89example: ./run_vmtests.sh -t "hmm mmap ksm" 90EOF 91 exit 0 92} 93 94RUN_ALL=false 95RUN_DESTRUCTIVE=false 96TAP_PREFIX="# " 97 98while getopts "aht:n" OPT; do 99 case ${OPT} in 100 "a") RUN_ALL=true ;; 101 "h") usage ;; 102 "t") VM_SELFTEST_ITEMS=${OPTARG} ;; 103 "n") TAP_PREFIX= ;; 104 "d") RUN_DESTRUCTIVE=true ;; 105 esac 106done 107shift $((OPTIND -1)) 108 109# default behavior: run all tests 110VM_SELFTEST_ITEMS=${VM_SELFTEST_ITEMS:-default} 111 112test_selected() { 113 if [ "$VM_SELFTEST_ITEMS" == "default" ]; then 114 # If no VM_SELFTEST_ITEMS are specified, run all tests 115 return 0 116 fi 117 # If test selected argument is one of the test items 118 if [[ " ${VM_SELFTEST_ITEMS[*]} " =~ " ${1} " ]]; then 119 return 0 120 else 121 return 1 122 fi 123} 124 125run_gup_matrix() { 126 # -t: thp=on, -T: thp=off, -H: hugetlb=on 127 local hugetlb_mb=$(( needmem_KB / 1024 )) 128 129 for huge in -t -T "-H -m $hugetlb_mb"; do 130 # -u: gup-fast, -U: gup-basic, -a: pin-fast, -b: pin-basic, -L: pin-longterm 131 for test_cmd in -u -U -a -b -L; do 132 # -w: write=1, -W: write=0 133 for write in -w -W; do 134 # -S: shared 135 for share in -S " "; do 136 # -n: How many pages to fetch together? 512 is special 137 # because it's default thp size (or 2M on x86), 123 to 138 # just test partial gup when hit a huge in whatever form 139 for num in "-n 1" "-n 512" "-n 123"; do 140 CATEGORY="gup_test" run_test ./gup_test \ 141 $huge $test_cmd $write $share $num 142 done 143 done 144 done 145 done 146 done 147} 148 149# get huge pagesize and freepages from /proc/meminfo 150while read -r name size unit; do 151 if [ "$name" = "HugePages_Free:" ]; then 152 freepgs="$size" 153 fi 154 if [ "$name" = "Hugepagesize:" ]; then 155 hpgsize_KB="$size" 156 fi 157done < /proc/meminfo 158 159# Simple hugetlbfs tests have a hardcoded minimum requirement of 160# huge pages totaling 256MB (262144KB) in size. The userfaultfd 161# hugetlb test requires a minimum of 2 * nr_cpus huge pages. Take 162# both of these requirements into account and attempt to increase 163# number of huge pages available. 164nr_cpus=$(nproc) 165uffd_min_KB=$((hpgsize_KB * nr_cpus * 2)) 166hugetlb_min_KB=$((256 * 1024)) 167if [[ $uffd_min_KB -gt $hugetlb_min_KB ]]; then 168 needmem_KB=$uffd_min_KB 169else 170 needmem_KB=$hugetlb_min_KB 171fi 172 173# set proper nr_hugepages 174if [ -n "$freepgs" ] && [ -n "$hpgsize_KB" ]; then 175 nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 176 needpgs=$((needmem_KB / hpgsize_KB)) 177 tries=2 178 while [ "$tries" -gt 0 ] && [ "$freepgs" -lt "$needpgs" ]; do 179 lackpgs=$((needpgs - freepgs)) 180 echo 3 > /proc/sys/vm/drop_caches 181 if ! echo $((lackpgs + nr_hugepgs)) > /proc/sys/vm/nr_hugepages; then 182 echo "Please run this test as root" 183 exit $ksft_skip 184 fi 185 while read -r name size unit; do 186 if [ "$name" = "HugePages_Free:" ]; then 187 freepgs=$size 188 fi 189 done < /proc/meminfo 190 tries=$((tries - 1)) 191 done 192 if [ "$freepgs" -lt "$needpgs" ]; then 193 printf "Not enough huge pages available (%d < %d)\n" \ 194 "$freepgs" "$needpgs" 195 fi 196 HAVE_HUGEPAGES=1 197else 198 echo "no hugetlbfs support in kernel?" 199 HAVE_HUGEPAGES=0 200fi 201 202# filter 64bit architectures 203ARCH64STR="arm64 mips64 parisc64 ppc64 ppc64le riscv64 s390x sparc64 x86_64" 204if [ -z "$ARCH" ]; then 205 ARCH=$(uname -m 2>/dev/null | sed -e 's/aarch64.*/arm64/') 206fi 207VADDR64=0 208echo "$ARCH64STR" | grep "$ARCH" &>/dev/null && VADDR64=1 209 210tap_prefix() { 211 sed -e "s/^/${TAP_PREFIX}/" 212} 213 214tap_output() { 215 if [[ ! -z "$TAP_PREFIX" ]]; then 216 read str 217 echo $str 218 fi 219} 220 221pretty_name() { 222 echo "$*" | sed -e 's/^\(bash \)\?\.\///' 223} 224 225# Usage: run_test [test binary] [arbitrary test arguments...] 226run_test() { 227 if test_selected ${CATEGORY}; then 228 local skip=0 229 230 # On memory constrainted systems some tests can fail to allocate hugepages. 231 # perform some cleanup before the test for a higher success rate. 232 if [ ${CATEGORY} == "thp" -o ${CATEGORY} == "hugetlb" ]; then 233 if [ "${HAVE_HUGEPAGES}" = "1" ]; then 234 echo 3 > /proc/sys/vm/drop_caches 235 sleep 2 236 echo 1 > /proc/sys/vm/compact_memory 237 sleep 2 238 else 239 echo "hugepages not supported" | tap_prefix 240 skip=1 241 fi 242 fi 243 244 local test=$(pretty_name "$*") 245 local title="running $*" 246 local sep=$(echo -n "$title" | tr "[:graph:][:space:]" -) 247 printf "%s\n%s\n%s\n" "$sep" "$title" "$sep" | tap_prefix 248 249 if [ "${skip}" != "1" ]; then 250 ("$@" 2>&1) | tap_prefix 251 local ret=${PIPESTATUS[0]} 252 else 253 local ret=$ksft_skip 254 fi 255 count_total=$(( count_total + 1 )) 256 if [ $ret -eq 0 ]; then 257 count_pass=$(( count_pass + 1 )) 258 echo "[PASS]" | tap_prefix 259 echo "ok ${count_total} ${test}" | tap_output 260 elif [ $ret -eq $ksft_skip ]; then 261 count_skip=$(( count_skip + 1 )) 262 echo "[SKIP]" | tap_prefix 263 echo "ok ${count_total} ${test} # SKIP" | tap_output 264 exitcode=$ksft_skip 265 else 266 count_fail=$(( count_fail + 1 )) 267 echo "[FAIL]" | tap_prefix 268 echo "not ok ${count_total} ${test} # exit=$ret" | tap_output 269 exitcode=1 270 fi 271 fi # test_selected 272} 273 274echo "TAP version 13" | tap_output 275 276CATEGORY="hugetlb" run_test ./hugepage-mmap 277 278shmmax=$(cat /proc/sys/kernel/shmmax) 279shmall=$(cat /proc/sys/kernel/shmall) 280echo 268435456 > /proc/sys/kernel/shmmax 281echo 4194304 > /proc/sys/kernel/shmall 282CATEGORY="hugetlb" run_test ./hugepage-shm 283echo "$shmmax" > /proc/sys/kernel/shmmax 284echo "$shmall" > /proc/sys/kernel/shmall 285 286CATEGORY="hugetlb" run_test ./map_hugetlb 287CATEGORY="hugetlb" run_test ./hugepage-mremap 288CATEGORY="hugetlb" run_test ./hugepage-vmemmap 289CATEGORY="hugetlb" run_test ./hugetlb-madvise 290CATEGORY="hugetlb" run_test ./hugetlb_dio 291 292if [ "${HAVE_HUGEPAGES}" = "1" ]; then 293 nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) 294 # For this test, we need one and just one huge page 295 echo 1 > /proc/sys/vm/nr_hugepages 296 CATEGORY="hugetlb" run_test ./hugetlb_fault_after_madv 297 CATEGORY="hugetlb" run_test ./hugetlb_madv_vs_map 298 # Restore the previous number of huge pages, since further tests rely on it 299 echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages 300fi 301 302if test_selected "hugetlb"; then 303 echo "NOTE: These hugetlb tests provide minimal coverage. Use" | tap_prefix 304 echo " https://github.com/libhugetlbfs/libhugetlbfs.git for" | tap_prefix 305 echo " hugetlb regression testing." | tap_prefix 306fi 307 308CATEGORY="mmap" run_test ./map_fixed_noreplace 309 310if $RUN_ALL; then 311 run_gup_matrix 312else 313 # get_user_pages_fast() benchmark 314 CATEGORY="gup_test" run_test ./gup_test -u 315 # pin_user_pages_fast() benchmark 316 CATEGORY="gup_test" run_test ./gup_test -a 317fi 318# Dump pages 0, 19, and 4096, using pin_user_pages: 319CATEGORY="gup_test" run_test ./gup_test -ct -F 0x1 0 19 0x1000 320CATEGORY="gup_test" run_test ./gup_longterm 321 322CATEGORY="userfaultfd" run_test ./uffd-unit-tests 323uffd_stress_bin=./uffd-stress 324CATEGORY="userfaultfd" run_test ${uffd_stress_bin} anon 20 16 325# Hugetlb tests require source and destination huge pages. Pass in half 326# the size of the free pages we have, which is used for *each*. 327# uffd-stress expects a region expressed in MiB, so we adjust 328# half_ufd_size_MB accordingly. 329half_ufd_size_MB=$(((freepgs * hpgsize_KB) / 1024 / 2)) 330CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb "$half_ufd_size_MB" 32 331CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb-private "$half_ufd_size_MB" 32 332CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem 20 16 333CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem-private 20 16 334# uffd-wp-mremap requires at least one page of each size. 335have_all_size_hugepgs=true 336declare -A nr_size_hugepgs 337for f in /sys/kernel/mm/hugepages/**/nr_hugepages; do 338 old=$(cat $f) 339 nr_size_hugepgs["$f"]="$old" 340 if [ "$old" == 0 ]; then 341 echo 1 > "$f" 342 fi 343 if [ $(cat "$f") == 0 ]; then 344 have_all_size_hugepgs=false 345 break 346 fi 347done 348if $have_all_size_hugepgs; then 349 CATEGORY="userfaultfd" run_test ./uffd-wp-mremap 350else 351 echo "# SKIP ./uffd-wp-mremap" 352fi 353 354#cleanup 355for f in "${!nr_size_hugepgs[@]}"; do 356 echo "${nr_size_hugepgs["$f"]}" > "$f" 357done 358echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages 359 360CATEGORY="compaction" run_test ./compaction_test 361 362if command -v sudo &> /dev/null && sudo -u nobody ls ./on-fault-limit >/dev/null; 363then 364 CATEGORY="mlock" run_test sudo -u nobody ./on-fault-limit 365else 366 echo "# SKIP ./on-fault-limit" 367fi 368 369CATEGORY="mmap" run_test ./map_populate 370 371CATEGORY="mlock" run_test ./mlock-random-test 372 373CATEGORY="mlock" run_test ./mlock2-tests 374 375CATEGORY="process_mrelease" run_test ./mrelease_test 376 377CATEGORY="mremap" run_test ./mremap_test 378 379CATEGORY="hugetlb" run_test ./thuge-gen 380CATEGORY="hugetlb" run_test ./charge_reserved_hugetlb.sh -cgroup-v2 381CATEGORY="hugetlb" run_test ./hugetlb_reparenting_test.sh -cgroup-v2 382if $RUN_DESTRUCTIVE; then 383nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) 384enable_soft_offline=$(cat /proc/sys/vm/enable_soft_offline) 385echo 8 > /proc/sys/vm/nr_hugepages 386CATEGORY="hugetlb" run_test ./hugetlb-soft-offline 387echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages 388echo "$enable_soft_offline" > /proc/sys/vm/enable_soft_offline 389CATEGORY="hugetlb" run_test ./hugetlb-read-hwpoison 390fi 391 392if [ $VADDR64 -ne 0 ]; then 393 394 # set overcommit_policy as OVERCOMMIT_ALWAYS so that kernel 395 # allows high virtual address allocation requests independent 396 # of platform's physical memory. 397 398 if [ -x ./virtual_address_range ]; then 399 prev_policy=$(cat /proc/sys/vm/overcommit_memory) 400 echo 1 > /proc/sys/vm/overcommit_memory 401 CATEGORY="hugevm" run_test ./virtual_address_range 402 echo $prev_policy > /proc/sys/vm/overcommit_memory 403 fi 404 405 # va high address boundary switch test 406 ARCH_ARM64="arm64" 407 prev_nr_hugepages=$(cat /proc/sys/vm/nr_hugepages) 408 if [ "$ARCH" == "$ARCH_ARM64" ]; then 409 echo 6 > /proc/sys/vm/nr_hugepages 410 fi 411 CATEGORY="hugevm" run_test bash ./va_high_addr_switch.sh 412 if [ "$ARCH" == "$ARCH_ARM64" ]; then 413 echo $prev_nr_hugepages > /proc/sys/vm/nr_hugepages 414 fi 415fi # VADDR64 416 417# vmalloc stability smoke test 418CATEGORY="vmalloc" run_test bash ./test_vmalloc.sh smoke 419 420CATEGORY="mremap" run_test ./mremap_dontunmap 421 422CATEGORY="hmm" run_test bash ./test_hmm.sh smoke 423 424# MADV_GUARD_INSTALL and MADV_GUARD_REMOVE tests 425CATEGORY="madv_guard" run_test ./guard-regions 426 427# MADV_POPULATE_READ and MADV_POPULATE_WRITE tests 428CATEGORY="madv_populate" run_test ./madv_populate 429 430# PROCESS_MADV test 431CATEGORY="process_madv" run_test ./process_madv 432 433CATEGORY="vma_merge" run_test ./merge 434 435if [ -x ./memfd_secret ] 436then 437if [ -f /proc/sys/kernel/yama/ptrace_scope ]; then 438 (echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix 439fi 440CATEGORY="memfd_secret" run_test ./memfd_secret 441fi 442 443# KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 444if [ "${HAVE_HUGEPAGES}" = "1" ]; then 445 CATEGORY="ksm" run_test ./ksm_tests -H -s 100 446fi 447# KSM KSM_MERGE_TIME test with size of 100 448CATEGORY="ksm" run_test ./ksm_tests -P -s 100 449# KSM MADV_MERGEABLE test with 10 identical pages 450CATEGORY="ksm" run_test ./ksm_tests -M -p 10 451# KSM unmerge test 452CATEGORY="ksm" run_test ./ksm_tests -U 453# KSM test with 10 zero pages and use_zero_pages = 0 454CATEGORY="ksm" run_test ./ksm_tests -Z -p 10 -z 0 455# KSM test with 10 zero pages and use_zero_pages = 1 456CATEGORY="ksm" run_test ./ksm_tests -Z -p 10 -z 1 457# KSM test with 2 NUMA nodes and merge_across_nodes = 1 458CATEGORY="ksm_numa" run_test ./ksm_tests -N -m 1 459# KSM test with 2 NUMA nodes and merge_across_nodes = 0 460CATEGORY="ksm_numa" run_test ./ksm_tests -N -m 0 461 462CATEGORY="ksm" run_test ./ksm_functional_tests 463 464# protection_keys tests 465nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 466if [ -x ./protection_keys_32 ] 467then 468 CATEGORY="pkey" run_test ./protection_keys_32 469fi 470 471if [ -x ./protection_keys_64 ] 472then 473 CATEGORY="pkey" run_test ./protection_keys_64 474fi 475echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages 476 477if [ -x ./soft-dirty ] 478then 479 CATEGORY="soft_dirty" run_test ./soft-dirty 480fi 481 482CATEGORY="pagemap" run_test ./pagemap_ioctl 483 484CATEGORY="pfnmap" run_test ./pfnmap 485 486# COW tests 487CATEGORY="cow" run_test ./cow 488 489CATEGORY="thp" run_test ./khugepaged 490 491CATEGORY="thp" run_test ./khugepaged -s 2 492 493CATEGORY="thp" run_test ./khugepaged all:shmem 494 495CATEGORY="thp" run_test ./khugepaged -s 4 all:shmem 496 497CATEGORY="thp" run_test ./transhuge-stress -d 20 498 499# Try to create XFS if not provided 500if [ -z "${SPLIT_HUGE_PAGE_TEST_XFS_PATH}" ]; then 501 if [ "${HAVE_HUGEPAGES}" = "1" ]; then 502 if test_selected "thp"; then 503 if grep xfs /proc/filesystems &>/dev/null; then 504 XFS_IMG=$(mktemp /tmp/xfs_img_XXXXXX) 505 SPLIT_HUGE_PAGE_TEST_XFS_PATH=$(mktemp -d /tmp/xfs_dir_XXXXXX) 506 truncate -s 314572800 ${XFS_IMG} 507 mkfs.xfs -q ${XFS_IMG} 508 mount -o loop ${XFS_IMG} ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 509 MOUNTED_XFS=1 510 fi 511 fi 512 fi 513fi 514 515CATEGORY="thp" run_test ./split_huge_page_test ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 516 517if [ -n "${MOUNTED_XFS}" ]; then 518 umount ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 519 rmdir ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 520 rm -f ${XFS_IMG} 521fi 522 523CATEGORY="migration" run_test ./migration 524 525CATEGORY="mkdirty" run_test ./mkdirty 526 527CATEGORY="mdwe" run_test ./mdwe_test 528 529CATEGORY="page_frag" run_test ./test_page_frag.sh smoke 530 531CATEGORY="page_frag" run_test ./test_page_frag.sh aligned 532 533CATEGORY="page_frag" run_test ./test_page_frag.sh nonaligned 534 535echo "SUMMARY: PASS=${count_pass} SKIP=${count_skip} FAIL=${count_fail}" | tap_prefix 536echo "1..${count_total}" | tap_output 537 538exit $exitcode 539