diff options
| author | Mike Rapoport (Microsoft) <rppt@kernel.org> | 2026-05-11 19:28:38 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-28 21:31:54 -0700 |
| commit | ea55ee48c531cd237f82f5e74dbdd71140ad1659 (patch) | |
| tree | 8996802f50ec187e7e0a0695fd513071cf19c57f /tools | |
| parent | 5f0a9aa21ff963b9d92cd75de078fca906e28ccb (diff) | |
| download | linux-next-history-ea55ee48c531cd237f82f5e74dbdd71140ad1659.tar.gz | |
selftests/mm: run_vmtests.sh: free memory if available memory is low
Currently when running THP and HugeTLB tests, if HAVE_HUGEPAGES is set
run_test() drops caches, compacts memory and runs the test. But if
HAVE_HUGEPAGES is not set it skips the tests entirely, even if THP tests
have nothing to do with HAVE_HUGEPAGES.
Replace the check if HAVE_HUGEPAGES is set with a check of how much memory
is available. If there is less than 256 MB of available memory, drop
caches and run compaction and then continue to run a test regardless of
HAVE_HUGEPAGES value.
Link: https://lore.kernel.org/20260511162840.375890-55-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Luiz Capitulino <luizcap@redhat.com>
Tested-by: Sarthak Sharma <sarthak.sharma@arm.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam@infradead.org>
Cc: Li Wang <li.wang@linux.dev>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools')
| -rwxr-xr-x | tools/testing/selftests/mm/run_vmtests.sh | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 8453be45ab183..524c79b423443 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -234,19 +234,17 @@ 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" -o ${CATEGORY} == "hugetlb" ]; then - if [ "${HAVE_HUGEPAGES}" = "1" ]; then + mem_kb=$(awk '/MemAvailable/ {print $2}' /proc/meminfo) + mem_Mb=$((mem_kb / 1024)) + + if (( $mem_Mb < 256 )); then echo 3 > /proc/sys/vm/drop_caches sleep 2 echo 1 > /proc/sys/vm/compact_memory sleep 2 - else - echo "hugepages not supported" | tap_prefix - skip=1 fi fi @@ -255,12 +253,8 @@ run_test() { local sep=$(echo -n "$title" | tr "[:graph:][:space:]" -) printf "%s\n%s\n%s\n" "$sep" "$title" "$sep" | tap_prefix - if [ "${skip}" != "1" ]; then - ("$@" 2>&1) | tap_prefix - local ret=${PIPESTATUS[0]} - else - local ret=$ksft_skip - fi + ("$@" 2>&1) | tap_prefix + local ret=${PIPESTATUS[0]} count_total=$(( count_total + 1 )) if [ $ret -eq 0 ]; then count_pass=$(( count_pass + 1 )) |