diff options
| author | Brendan Jackman <jackmanb@google.com> | 2025-03-11 13:18:21 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-16 22:06:39 -0700 |
| commit | f896c6de833342bda61b8fe39f612023f7daf2a5 (patch) | |
| tree | b2183a1cec852f165eb864a0ac7c0518ade4446c | |
| parent | e9269b2cc403b7681980e7219cf2dc339fca8d38 (diff) | |
selftests/mm: ensure uffd-wp-mremap gets pages of each size
This test allocates a page of every available size and doesn't have any
SKIP logic if the allocation fails. So, ensure it's available and skip
the test if we can't do so.
Link: https://lkml.kernel.org/r/20250311-mm-selftests-v4-10-dec210a658f5@google.com
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rwxr-xr-x | tools/testing/selftests/mm/run_vmtests.sh | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 31a576d70b572..e1c20dcf8486d 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -325,9 +325,30 @@ CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb "$half_ufd_size_MB" 3 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 |