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remckee
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memblock tests: add bottom-up NUMA tests for memblock_alloc_exact_nid_raw
Add tests for memblock_alloc_exact_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 bottom-up 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 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 + range overlaps with multiple nodes along node boundaries, and the requested node ends before min_addr Acked-by: David Hildenbrand <[email protected]> Signed-off-by: Rebecca Mckeever <[email protected]> Signed-off-by: Mike Rapoport <[email protected]> Link: https://lore.kernel.org/r/935f0eed5e06fd44dc67d9f49b277923d7896bd3.1667802195.git.remckee0@gmail.com
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‎tools/testing/memblock/tests/alloc_exact_nid_api.c‎

Lines changed: 282 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -288,12 +288,286 @@ static int alloc_exact_nid_top_down_numa_no_overlap_low_check(void)
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return 0;
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}
290290

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/*
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* A test that tries to allocate a memory region in a specific NUMA node that
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* has enough memory to allocate a region of the requested size.
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* Expect to allocate an aligned region at the beginning of the requested node.
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*/
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static int alloc_exact_nid_bottom_up_numa_simple_check(void)
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{
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int nid_req = 3;
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struct memblock_region *new_rgn = &memblock.reserved.regions[0];
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struct memblock_region *req_node = &memblock.memory.regions[nid_req];
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void *allocated_ptr = NULL;
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phys_addr_t size;
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phys_addr_t min_addr;
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phys_addr_t max_addr;
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PREFIX_PUSH();
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setup_numa_memblock(node_fractions);
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ASSERT_LE(SZ_4, req_node->size);
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size = req_node->size / SZ_4;
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min_addr = memblock_start_of_DRAM();
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max_addr = memblock_end_of_DRAM();
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allocated_ptr = memblock_alloc_exact_nid_raw(size, SMP_CACHE_BYTES,
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min_addr, max_addr,
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nid_req);
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ASSERT_NE(allocated_ptr, NULL);
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ASSERT_MEM_NE(allocated_ptr, 0, size);
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ASSERT_EQ(new_rgn->size, size);
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ASSERT_EQ(new_rgn->base, req_node->base);
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ASSERT_LE(region_end(new_rgn), region_end(req_node));
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ASSERT_EQ(memblock.reserved.cnt, 1);
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ASSERT_EQ(memblock.reserved.total_size, size);
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test_pass_pop();
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return 0;
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}
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/*
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* A test that tries to allocate a memory region in a specific NUMA node that
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* is partially reserved but has enough memory for the allocated region:
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*
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* | +---------------------------------------+ |
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* | | requested | |
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* +-----------+---------------------------------------+---------+
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*
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* | +------------------+-----+ |
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* | | reserved | new | |
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* +-----------+------------------+-----+------------------------+
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*
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* Expect to allocate an aligned region in the requested node that merges with
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* the existing reserved region. The total size gets updated.
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*/
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static int alloc_exact_nid_bottom_up_numa_part_reserved_check(void)
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{
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int nid_req = 4;
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struct memblock_region *new_rgn = &memblock.reserved.regions[0];
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struct memblock_region *req_node = &memblock.memory.regions[nid_req];
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void *allocated_ptr = NULL;
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struct region r1;
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phys_addr_t size;
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phys_addr_t min_addr;
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phys_addr_t max_addr;
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phys_addr_t total_size;
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PREFIX_PUSH();
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setup_numa_memblock(node_fractions);
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ASSERT_LE(SZ_8, req_node->size);
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r1.base = req_node->base;
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r1.size = req_node->size / SZ_2;
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size = r1.size / SZ_4;
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min_addr = memblock_start_of_DRAM();
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max_addr = memblock_end_of_DRAM();
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total_size = size + r1.size;
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memblock_reserve(r1.base, r1.size);
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allocated_ptr = memblock_alloc_exact_nid_raw(size, SMP_CACHE_BYTES,
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min_addr, max_addr,
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nid_req);
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ASSERT_NE(allocated_ptr, NULL);
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ASSERT_MEM_NE(allocated_ptr, 0, size);
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ASSERT_EQ(new_rgn->size, total_size);
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ASSERT_EQ(new_rgn->base, req_node->base);
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ASSERT_LE(region_end(new_rgn), region_end(req_node));
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ASSERT_EQ(memblock.reserved.cnt, 1);
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ASSERT_EQ(memblock.reserved.total_size, total_size);
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test_pass_pop();
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return 0;
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}
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/*
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* A test that tries to allocate a memory region that spans over the min_addr
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* and max_addr range and overlaps with two different nodes, where the first
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* node is the requested node:
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*
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* min_addr
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* | max_addr
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* | |
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* v v
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* | +-----------------------+-----------+ |
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* | | requested | node3 | |
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* +-----------+-----------------------+-----------+--------------+
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* + +
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* | +-----------+ |
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* | | rgn | |
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* +-----------+-----------+--------------------------------------+
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*
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* Expect to drop the lower limit and allocate a memory region at the beginning
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* of the requested node.
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*/
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static int alloc_exact_nid_bottom_up_numa_split_range_low_check(void)
412+
{
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int nid_req = 2;
414+
struct memblock_region *new_rgn = &memblock.reserved.regions[0];
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struct memblock_region *req_node = &memblock.memory.regions[nid_req];
416+
void *allocated_ptr = NULL;
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phys_addr_t size = SZ_512;
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phys_addr_t min_addr;
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phys_addr_t max_addr;
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phys_addr_t req_node_end;
421+
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PREFIX_PUSH();
423+
setup_numa_memblock(node_fractions);
424+
425+
req_node_end = region_end(req_node);
426+
min_addr = req_node_end - SZ_256;
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max_addr = min_addr + size;
428+
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allocated_ptr = memblock_alloc_exact_nid_raw(size, SMP_CACHE_BYTES,
430+
min_addr, max_addr,
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nid_req);
432+
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ASSERT_NE(allocated_ptr, NULL);
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ASSERT_MEM_NE(allocated_ptr, 0, size);
435+
436+
ASSERT_EQ(new_rgn->size, size);
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ASSERT_EQ(new_rgn->base, req_node->base);
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ASSERT_LE(region_end(new_rgn), req_node_end);
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ASSERT_EQ(memblock.reserved.cnt, 1);
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ASSERT_EQ(memblock.reserved.total_size, size);
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test_pass_pop();
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return 0;
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}
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/*
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* A test that tries to allocate a memory region that spans over the min_addr
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* and max_addr range and overlaps with two different nodes, where the requested
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* node ends before min_addr:
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*
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* min_addr
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* | max_addr
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* | |
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* v v
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* | +---------------+ +-------------+---------+ |
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* | | requested | | node1 | node2 | |
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* +----+---------------+--------+-------------+---------+---------+
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* + +
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* | +---------+ |
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* | | rgn | |
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* +----+---------+------------------------------------------------+
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*
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* Expect to drop the lower limit and allocate a memory region that starts at
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* the beginning of the requested node.
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*/
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static int alloc_exact_nid_bottom_up_numa_no_overlap_split_check(void)
469+
{
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int nid_req = 2;
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struct memblock_region *new_rgn = &memblock.reserved.regions[0];
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struct memblock_region *req_node = &memblock.memory.regions[nid_req];
473+
struct memblock_region *node2 = &memblock.memory.regions[6];
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void *allocated_ptr = NULL;
475+
phys_addr_t size;
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phys_addr_t min_addr;
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phys_addr_t max_addr;
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479+
PREFIX_PUSH();
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setup_numa_memblock(node_fractions);
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size = SZ_512;
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min_addr = node2->base - SZ_256;
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max_addr = min_addr + size;
485+
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allocated_ptr = memblock_alloc_exact_nid_raw(size, SMP_CACHE_BYTES,
487+
min_addr, max_addr,
488+
nid_req);
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ASSERT_NE(allocated_ptr, NULL);
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ASSERT_MEM_NE(allocated_ptr, 0, size);
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ASSERT_EQ(new_rgn->size, size);
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ASSERT_EQ(new_rgn->base, req_node->base);
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ASSERT_LE(region_end(new_rgn), region_end(req_node));
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ASSERT_EQ(memblock.reserved.cnt, 1);
498+
ASSERT_EQ(memblock.reserved.total_size, size);
499+
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test_pass_pop();
501+
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return 0;
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}
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/*
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* A test that tries to allocate memory within min_addr and max_add range when
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* the requested node and the range do not overlap, and requested node ends
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* before min_addr. The range overlaps with multiple nodes along node
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* boundaries:
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*
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* min_addr
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* | max_addr
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* | |
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* v v
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* |-----------+ +----------+----...----+----------+ |
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* | requested | | min node | ... | max node | |
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* +-----------+-----------+----------+----...----+----------+------+
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* + +
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* |-----+ |
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* | rgn | |
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* +-----+----------------------------------------------------------+
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*
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* Expect to drop the lower limit and allocate a memory region that starts at
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* the beginning of the requested node.
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*/
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static int alloc_exact_nid_bottom_up_numa_no_overlap_low_check(void)
527+
{
528+
int nid_req = 0;
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struct memblock_region *new_rgn = &memblock.reserved.regions[0];
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struct memblock_region *req_node = &memblock.memory.regions[nid_req];
531+
struct memblock_region *min_node = &memblock.memory.regions[2];
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struct memblock_region *max_node = &memblock.memory.regions[5];
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void *allocated_ptr = NULL;
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phys_addr_t size = SZ_64;
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phys_addr_t max_addr;
536+
phys_addr_t min_addr;
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538+
PREFIX_PUSH();
539+
setup_numa_memblock(node_fractions);
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541+
min_addr = min_node->base;
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max_addr = region_end(max_node);
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allocated_ptr = memblock_alloc_exact_nid_raw(size, SMP_CACHE_BYTES,
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min_addr, max_addr,
546+
nid_req);
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ASSERT_NE(allocated_ptr, NULL);
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ASSERT_MEM_NE(allocated_ptr, 0, size);
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ASSERT_EQ(new_rgn->size, size);
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ASSERT_EQ(new_rgn->base, req_node->base);
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ASSERT_LE(region_end(new_rgn), region_end(req_node));
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ASSERT_EQ(memblock.reserved.cnt, 1);
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ASSERT_EQ(memblock.reserved.total_size, size);
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test_pass_pop();
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560+
return 0;
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}
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291563
/* Test case wrappers for NUMA tests */
292564
static int alloc_exact_nid_numa_simple_check(void)
293565
{
294566
test_print("\tRunning %s...\n", __func__);
295567
memblock_set_bottom_up(false);
296568
alloc_exact_nid_top_down_numa_simple_check();
569+
memblock_set_bottom_up(true);
570+
alloc_exact_nid_bottom_up_numa_simple_check();
297571

298572
return 0;
299573
}
@@ -303,6 +577,8 @@ static int alloc_exact_nid_numa_part_reserved_check(void)
303577
test_print("\tRunning %s...\n", __func__);
304578
memblock_set_bottom_up(false);
305579
alloc_exact_nid_top_down_numa_part_reserved_check();
580+
memblock_set_bottom_up(true);
581+
alloc_exact_nid_bottom_up_numa_part_reserved_check();
306582

307583
return 0;
308584
}
@@ -312,6 +588,8 @@ static int alloc_exact_nid_numa_split_range_low_check(void)
312588
test_print("\tRunning %s...\n", __func__);
313589
memblock_set_bottom_up(false);
314590
alloc_exact_nid_top_down_numa_split_range_low_check();
591+
memblock_set_bottom_up(true);
592+
alloc_exact_nid_bottom_up_numa_split_range_low_check();
315593

316594
return 0;
317595
}
@@ -321,6 +599,8 @@ static int alloc_exact_nid_numa_no_overlap_split_check(void)
321599
test_print("\tRunning %s...\n", __func__);
322600
memblock_set_bottom_up(false);
323601
alloc_exact_nid_top_down_numa_no_overlap_split_check();
602+
memblock_set_bottom_up(true);
603+
alloc_exact_nid_bottom_up_numa_no_overlap_split_check();
324604

325605
return 0;
326606
}
@@ -330,6 +610,8 @@ static int alloc_exact_nid_numa_no_overlap_low_check(void)
330610
test_print("\tRunning %s...\n", __func__);
331611
memblock_set_bottom_up(false);
332612
alloc_exact_nid_top_down_numa_no_overlap_low_check();
613+
memblock_set_bottom_up(true);
614+
alloc_exact_nid_bottom_up_numa_no_overlap_low_check();
333615

334616
return 0;
335617
}

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