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