diff options
| author | Aboorva Devarajan <aboorvad@linux.ibm.com> | 2025-08-16 09:31:12 +0530 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-09-13 16:55:04 -0700 |
| commit | e36215431ce2e381bd3ff0bf2d16d1fe5792ddba (patch) | |
| tree | c4c61abe8de041cca89e5b0cb336d0a70818974e | |
| parent | 2d941088f4570f50df8a079b3ca25c392226fb38 (diff) | |
selftests/mm: skip thuge-gen test if system is not setup properly
Make thuge-gen skip instead of fail when it can't run due to system
settings. If shmmax is too small or no 1G huge pages are available, the
test now prints a warning and is marked as skipped.
-------------------
Before Patch:
-------------------
~ running ./thuge-gen
~ Bail out! Please do echo 262144 > /proc/sys/kernel/shmmax
~ Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
~ [FAIL]
not ok 28 thuge-gen ~ exit=1
-------------------
After Patch:
-------------------
~ running ./thuge-gen
~ ~ WARNING: shmmax is too small to run this test.
~ ~ Please run the following command to increase shmmax:
~ ~ echo 262144 > /proc/sys/kernel/shmmax
~ 1..0 ~ SKIP Test skipped due to insufficient shmmax value.
~ [SKIP]
ok 29 thuge-gen ~ SKIP
Link: https://lkml.kernel.org/r/20250816040113.760010-7-aboorvad@linux.ibm.com
Co-developed-by: Donet Tom <donettom@linux.ibm.com>
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | tools/testing/selftests/mm/thuge-gen.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/tools/testing/selftests/mm/thuge-gen.c b/tools/testing/selftests/mm/thuge-gen.c index 8e2b08dc5762..4f5e290ff1a6 100644 --- a/tools/testing/selftests/mm/thuge-gen.c +++ b/tools/testing/selftests/mm/thuge-gen.c @@ -177,13 +177,16 @@ void find_pagesizes(void) globfree(&g); read_sysfs("/proc/sys/kernel/shmmax", &shmmax_val); - if (shmmax_val < NUM_PAGES * largest) - ksft_exit_fail_msg("Please do echo %lu > /proc/sys/kernel/shmmax", - largest * NUM_PAGES); + if (shmmax_val < NUM_PAGES * largest) { + ksft_print_msg("WARNING: shmmax is too small to run this test.\n"); + ksft_print_msg("Please run the following command to increase shmmax:\n"); + ksft_print_msg("echo %lu > /proc/sys/kernel/shmmax\n", largest * NUM_PAGES); + ksft_exit_skip("Test skipped due to insufficient shmmax value.\n"); + } #if defined(__x86_64__) if (largest != 1U<<30) { - ksft_exit_fail_msg("No GB pages available on x86-64\n" + ksft_exit_skip("No GB pages available on x86-64\n" "Please boot with hugepagesz=1G hugepages=%d\n", NUM_PAGES); } #endif |