On 04.09.22 06:21, Rebecca Mckeever wrote:
Add tests for memblock_alloc_try_nid() and memblock_alloc_try_nid_raw() where the simulated physical memory is set up with multiple NUMA nodes. Additionally, all of these tests set nid != NUMA_NO_NODE. These tests are run with a top-down allocation direction. The tested scenarios are: Range unrestricted: - region can be allocated in the specific node requested: + there are no previously reserved regions + the requested node is partially reserved but has enough space - the specific node requested cannot accommodate the request, but the region can be allocated in a different node: + there are no previously reserved regions, but node is too small + the requested node is fully reserved + the requested node is partially reserved and does not have enough space Range restricted: - region can be allocated in the specific node requested after dropping min_addr: + range partially overlaps with two different nodes, where the first node is the requested node + range partially overlaps with two different nodes, where the requested node ends before min_addr - region cannot be allocated in the specific node requested, but it can be allocated in the requested range: + range overlaps with multiple nodes along node boundaries, and the requested node ends before min_addr + range overlaps with multiple nodes along node boundaries, and the requested node starts after max_addr - region cannot be allocated in the specific node requested, but it can be allocated after dropping min_addr: + range partially overlaps with two different nodes, where the second node is the requested node Signed-off-by: Rebecca Mckeever <remckee0@xxxxxxxxx> --- tools/testing/memblock/tests/alloc_nid_api.c | 694 ++++++++++++++++++- tools/testing/memblock/tests/alloc_nid_api.h | 16 + tools/testing/memblock/tests/common.h | 18 + 3 files changed, 717 insertions(+), 11 deletions(-) diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/memblock/tests/alloc_nid_api.c index 32b3c1594fdd..a639e9d3e098 100644 --- a/tools/testing/memblock/tests/alloc_nid_api.c +++ b/tools/testing/memblock/tests/alloc_nid_api.c @@ -3,6 +3,14 @@static int alloc_nid_test_flags = TEST_F_NONE; +/*+ * contains the denominators of the fractions of MEM_SIZE contained in each node + * (e.g., if node_fractions[0] = SZ_8, node 0 will contain 1/8th of MEM_SIZE) + */ +static const phys_addr_t node_fractions[] = { + SZ_4, SZ_16, SZ_8, SZ_8, SZ_16, SZ_16, SZ_4, SZ_16 +}; +
Besides that part, that I consider confusing :) Acked-by: David Hildenbrand <david@xxxxxxxxxx> -- Thanks, David / dhildenb
