diff options
Diffstat (limited to 'tools/testing/selftests/mm/run_vmtests.sh')
| -rwxr-xr-x | tools/testing/selftests/mm/run_vmtests.sh | 101 |
1 files changed, 71 insertions, 30 deletions
diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 333c468c2699..9aff33b10999 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -187,9 +187,10 @@ if [ -n "$freepgs" ] && [ -n "$hpgsize_KB" ]; then printf "Not enough huge pages available (%d < %d)\n" \ "$freepgs" "$needpgs" fi + HAVE_HUGEPAGES=1 else echo "no hugetlbfs support in kernel?" - exit 1 + HAVE_HUGEPAGES=0 fi # filter 64bit architectures @@ -218,13 +219,20 @@ pretty_name() { # Usage: run_test [test binary] [arbitrary test arguments...] run_test() { if test_selected ${CATEGORY}; then + local skip=0 + # On memory constrainted systems some tests can fail to allocate hugepages. # perform some cleanup before the test for a higher success rate. - if [ ${CATEGORY} == "thp" ] | [ ${CATEGORY} == "hugetlb" ]; then - echo 3 > /proc/sys/vm/drop_caches - sleep 2 - echo 1 > /proc/sys/vm/compact_memory - sleep 2 + if [ ${CATEGORY} == "thp" -o ${CATEGORY} == "hugetlb" ]; then + if [ "${HAVE_HUGEPAGES}" = "1" ]; then + echo 3 > /proc/sys/vm/drop_caches + sleep 2 + echo 1 > /proc/sys/vm/compact_memory + sleep 2 + else + echo "hugepages not supported" | tap_prefix + skip=1 + fi fi local test=$(pretty_name "$*") @@ -232,8 +240,12 @@ run_test() { local sep=$(echo -n "$title" | tr "[:graph:][:space:]" -) printf "%s\n%s\n%s\n" "$sep" "$title" "$sep" | tap_prefix - ("$@" 2>&1) | tap_prefix - local ret=${PIPESTATUS[0]} + if [ "${skip}" != "1" ]; then + ("$@" 2>&1) | tap_prefix + local ret=${PIPESTATUS[0]} + else + local ret=$ksft_skip + fi count_total=$(( count_total + 1 )) if [ $ret -eq 0 ]; then count_pass=$(( count_pass + 1 )) @@ -271,13 +283,15 @@ CATEGORY="hugetlb" run_test ./hugepage-vmemmap CATEGORY="hugetlb" run_test ./hugetlb-madvise CATEGORY="hugetlb" run_test ./hugetlb_dio -nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) -# For this test, we need one and just one huge page -echo 1 > /proc/sys/vm/nr_hugepages -CATEGORY="hugetlb" run_test ./hugetlb_fault_after_madv -CATEGORY="hugetlb" run_test ./hugetlb_madv_vs_map -# Restore the previous number of huge pages, since further tests rely on it -echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages +if [ "${HAVE_HUGEPAGES}" = "1" ]; then + nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) + # For this test, we need one and just one huge page + echo 1 > /proc/sys/vm/nr_hugepages + CATEGORY="hugetlb" run_test ./hugetlb_fault_after_madv + CATEGORY="hugetlb" run_test ./hugetlb_madv_vs_map + # Restore the previous number of huge pages, since further tests rely on it + echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages +fi if test_selected "hugetlb"; then echo "NOTE: These hugetlb tests provide minimal coverage. Use" | tap_prefix @@ -304,19 +318,42 @@ uffd_stress_bin=./uffd-stress CATEGORY="userfaultfd" run_test ${uffd_stress_bin} anon 20 16 # Hugetlb tests require source and destination huge pages. Pass in half # the size of the free pages we have, which is used for *each*. -half_ufd_size_MB=$((freepgs / 2)) +# uffd-stress expects a region expressed in MiB, so we adjust +# half_ufd_size_MB accordingly. +half_ufd_size_MB=$(((freepgs * hpgsize_KB) / 1024 / 2)) CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb "$half_ufd_size_MB" 32 CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb-private "$half_ufd_size_MB" 32 CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem 20 16 CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem-private 20 16 -CATEGORY="userfaultfd" run_test ./uffd-wp-mremap +# uffd-wp-mremap requires at least one page of each size. +have_all_size_hugepgs=true +declare -A nr_size_hugepgs +for f in /sys/kernel/mm/hugepages/**/nr_hugepages; do + old=$(cat $f) + nr_size_hugepgs["$f"]="$old" + if [ "$old" == 0 ]; then + echo 1 > "$f" + fi + if [ $(cat "$f") == 0 ]; then + have_all_size_hugepgs=false + break + fi +done +if $have_all_size_hugepgs; then + CATEGORY="userfaultfd" run_test ./uffd-wp-mremap +else + echo "# SKIP ./uffd-wp-mremap" +fi #cleanup +for f in "${!nr_size_hugepgs[@]}"; do + echo "${nr_size_hugepgs["$f"]}" > "$f" +done echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages CATEGORY="compaction" run_test ./compaction_test -if command -v sudo &> /dev/null; +if command -v sudo &> /dev/null && sudo -u nobody ls ./on-fault-limit >/dev/null; then CATEGORY="mlock" run_test sudo -u nobody ./on-fault-limit else @@ -379,19 +416,21 @@ CATEGORY="mremap" run_test ./mremap_dontunmap CATEGORY="hmm" run_test bash ./test_hmm.sh smoke # MADV_GUARD_INSTALL and MADV_GUARD_REMOVE tests -CATEGORY="madv_guard" run_test ./guard-pages +CATEGORY="madv_guard" run_test ./guard-regions # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests CATEGORY="madv_populate" run_test ./madv_populate if [ -x ./memfd_secret ] then -(echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix +(echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix CATEGORY="memfd_secret" run_test ./memfd_secret fi # KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 -CATEGORY="ksm" run_test ./ksm_tests -H -s 100 +if [ "${HAVE_HUGEPAGES}" = "1" ]; then + CATEGORY="ksm" run_test ./ksm_tests -H -s 100 +fi # KSM KSM_MERGE_TIME test with size of 100 CATEGORY="ksm" run_test ./ksm_tests -P -s 100 # KSM MADV_MERGEABLE test with 10 identical pages @@ -440,15 +479,17 @@ CATEGORY="thp" run_test ./transhuge-stress -d 20 # Try to create XFS if not provided if [ -z "${SPLIT_HUGE_PAGE_TEST_XFS_PATH}" ]; then - if test_selected "thp"; then - if grep xfs /proc/filesystems &>/dev/null; then - XFS_IMG=$(mktemp /tmp/xfs_img_XXXXXX) - SPLIT_HUGE_PAGE_TEST_XFS_PATH=$(mktemp -d /tmp/xfs_dir_XXXXXX) - truncate -s 314572800 ${XFS_IMG} - mkfs.xfs -q ${XFS_IMG} - mount -o loop ${XFS_IMG} ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} - MOUNTED_XFS=1 - fi + if [ "${HAVE_HUGEPAGES}" = "1" ]; then + if test_selected "thp"; then + if grep xfs /proc/filesystems &>/dev/null; then + XFS_IMG=$(mktemp /tmp/xfs_img_XXXXXX) + SPLIT_HUGE_PAGE_TEST_XFS_PATH=$(mktemp -d /tmp/xfs_dir_XXXXXX) + truncate -s 314572800 ${XFS_IMG} + mkfs.xfs -q ${XFS_IMG} + mount -o loop ${XFS_IMG} ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} + MOUNTED_XFS=1 + fi + fi fi fi |