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selftests/mm: run the MAP_DROPPABLE selftest

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The test was not being run by the selftest framework so it was never
noticed that it would fail with an assertion failure on configs without
support for MAP_DROPPABLE.  Update the test so that it is skipped instead
when MAP_DROPPABLE is not supported, and add it to the mmap category so
that the test is run by the framework.

Link: https://lore.kernel.org/20260416033939.49981-4-anthony.yznaga@oracle.com
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Liam Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Anthony Yznaga 2026-04-15 20:39:39 -07:00 committed by Andrew Morton
parent c02dd57c57
commit 303c6bdfe7
2 changed files with 9 additions and 1 deletions
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9
tools/testing/selftests/mm/droppable.c
View File

@ -26,7 +26,14 @@ int main(int argc, char *argv[])
ksft_set_plan(1);
alloc = mmap(0, alloc_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_DROPPABLE, -1, 0);
assert(alloc != MAP_FAILED);
if (alloc == MAP_FAILED) {
if ((errno == EOPNOTSUPP) || (errno == EINVAL)) {
ksft_test_result_skip("MAP_DROPPABLE not supported\n");
exit(KSFT_SKIP);
}
ksft_test_result_fail("mmap error: %s\n", strerror(errno));
exit(KSFT_FAIL);
}
memset(alloc, 'A', alloc_size);
for (size_t i = 0; i < alloc_size; i += page_size)
assert(*(uint8_t *)(alloc + i));

1
tools/testing/selftests/mm/run_vmtests.sh
View File

@ -382,6 +382,7 @@ else
fi
CATEGORY="mmap" run_test ./map_populate
CATEGORY="mmap" run_test ./droppable
CATEGORY="mlock" run_test ./mlock-random-test