These tests are aimed at verifying the memblock_alloc_node() to work as expected, so setting the
correct NUMA node for the new allocated region. The memblock_alloc_node() is mimicked by executing
the already implemented test function run_memblock_alloc_try_nid() and by setting the flags used
internally by the memblock_alloc_node(). The core check is between the requested NUMA node and the
`nid` field inside the memblock_region structure. These two are supposed to be equal in order for
the test to succeed.
Signed-off-by: Claudio Migliorelli <claudio.migliorelli@xxxxxxxxxxxxxx>
---
tools/testing/memblock/tests/alloc_nid_api.c | 43 ++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/memblock/tests/alloc_nid_api.c
index 2c2d60f4e3e3..9183e2219c5c 100644
--- a/tools/testing/memblock/tests/alloc_nid_api.c
+++ b/tools/testing/memblock/tests/alloc_nid_api.c
@@ -2483,6 +2483,40 @@ static int alloc_try_nid_numa_split_all_reserved_generic_check(void)
return 0;
}
+/*
+ * A test that tries to allocate a memory region through the
+ * memblock_alloc_node() on a NUMA node with id `nid`. The call to the
+ * memblock_alloc_node() is mimicked using the run_memblock_alloc_try_nid()
+ * with appropriate flags, the same used internally by the memblock_alloc_node().
+ * Expected to have the correct NUMA node set for the new region.
+ */
+static int alloc_node_on_correct_nid_simple_check(void)
+{
+ int nid_req = 2;
+ void *allocated_ptr = NULL;
+#ifdef CONFIG_NUMA
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+#endif
+ phys_addr_t size = SZ_512;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ MEMBLOCK_LOW_LIMIT, MEMBLOCK_ALLOC_ACCESSIBLE,
+ nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+#ifdef CONFIG_NUMA
+ ASSERT_EQ(nid_req, req_node->nid);
+#endif
+
+ test_pass_pop();
+
+ return 0;
+}
+
/* Test case wrappers for NUMA tests */
static int alloc_try_nid_numa_simple_check(void)
{
@@ -2621,6 +2655,14 @@ static int alloc_try_nid_numa_split_all_reserved_check(void)
return 0;
}
+static int alloc_try_nid_numa_correct_node_simple_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ alloc_node_on_correct_nid_simple_check();
+
+ return 0;
+}
+
int __memblock_alloc_nid_numa_checks(void)
{
test_print("Running %s NUMA tests...\n",
@@ -2640,6 +2682,7 @@ int __memblock_alloc_nid_numa_checks(void)
alloc_try_nid_numa_large_region_check();
alloc_try_nid_numa_reserved_full_merge_check();
alloc_try_nid_numa_split_all_reserved_check();
+ alloc_try_nid_numa_correct_node_simple_check();
return 0;
}
--
2.39.0
