The patch titled
Subject: selftests/mm: skip uffd hugetlb tests with insufficient hugepages
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-skip-uffd-hugetlb-tests-with-insufficient-hugepages.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-skip-uffd-hugetlb-tests-with-insufficient-hugepages.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Nico Pache <npache@xxxxxxxxxx>
Subject: selftests/mm: skip uffd hugetlb tests with insufficient hugepages
Date: Wed, 6 Mar 2024 15:37:13 -0700
Now that run_vmtests.sh does not guarantee that the correct hugepage count
is available, add a check inside the userfaultfd hugetlb test to verify
the nr_hugepages count before continuing.
Link: https://lkml.kernel.org/r/20240306223714.320681-3-npache@xxxxxxxxxx
Signed-off-by: Nico Pache <npache@xxxxxxxxxx>
Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-stress.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/tools/testing/selftests/mm/uffd-stress.c~selftests-mm-skip-uffd-hugetlb-tests-with-insufficient-hugepages
+++ a/tools/testing/selftests/mm/uffd-stress.c
@@ -441,6 +441,12 @@ int main(int argc, char **argv)
parse_test_type_arg(argv[1]);
bytes = atol(argv[2]) * 1024 * 1024;
+ if (test_type == TEST_HUGETLB &&
+ get_free_hugepages() < bytes / page_size) {
+ printf("skip: Skipping userfaultfd... not enough hugepages\n");
+ return KSFT_SKIP;
+ }
+
nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
nr_pages_per_cpu = bytes / page_size / nr_cpus;
_
Patches currently in -mm which might be from npache@xxxxxxxxxx are
selftests-mm-dont-fail-testsuite-due-to-a-lack-of-hugepages.patch
selftests-mm-skip-uffd-hugetlb-tests-with-insufficient-hugepages.patch
selftests-mm-skip-the-hugetlb-madvise-tests-on-unmet-hugepage-requirements.patch
