[PATCH] selftests/mm: skip migration tests if NUMA is unavailable

[AnishMulay <anishm7030@gmail.com>]

Currently, the migration test asserts that numa_available() returns 0.
On systems where NUMA is not available (returning -1), such as certain
ARM64 configurations or single-node systems, this assertion fails and
crashes the test.

Update the test to check the return value of numa_available(). If it
is less than 0, skip the test gracefully instead of failing.

This aligns the behavior with other MM selftests (like rmap) that
skip when NUMA support is missing.

Signed-off-by: AnishMulay <anishm7030@gmail.com>
---
 tools/testing/selftests/mm/migration.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/migration.c b/tools/testing/selftests/mm/migration.c
index ee24b88c2b248..60e78bbfc0e3e 100644
--- a/tools/testing/selftests/mm/migration.c
+++ b/tools/testing/selftests/mm/migration.c
@@ -36,7 +36,8 @@ FIXTURE_SETUP(migration)
 {
 	int n;
 
-	ASSERT_EQ(numa_available(), 0);
+	if (numa_available() < 0)
+		SKIP(return, "NUMA not available");
 	self->nthreads = numa_num_task_cpus() - 1;
 	self->n1 = -1;
 	self->n2 = -1;
-- 
2.51.0