These patches add additional tests for memblock_alloc_try_nid() and
memblock_alloc_try_nid_raw() that use a simulated physical
memory that is set up with multiple NUMA nodes. Additionally, most of
these tests set nid != NUMA_NO_NODE.
To set up a simulated physical memory with multiple NUMA nodes, patch 1
introduces setup_numa_memblock(). This function uses a previously
allocated dummy physical memory. It can be used in place of
setup_memblock() in tests that need to simulate a NUMA system.
These tests are run twice, once for memblock_alloc_try_nid() and once
for memblock_alloc_try_nid_raw(), so that both functions are tested with
the same set of tests. When the tests run memblock_alloc_try_nid(), they
test that the entire memory region is zero. When the tests run
memblock_alloc_try_nid_raw(), they test that the entire memory region is
nonzero.
---
Changelog
v5 -> v6
Based on feedback from David Hildenbrand:
PATCH 1:
- tests/common.c, tests/common.h:
+ setup_numa_memblock():
* Change nodes[] from const int to const unsigned int
* Remove "&& node_fracs[i] > 0" from the assert()
PATCH 2:
- tests/alloc_nid_api.c:
+ Update node_fractions[] type to static const unsigned int to
reflect changes in PATCH 1
v4 -> v5
Based on feedback from David Hildenbrand:
PATCH 1:
- tests/common.c:
+ setup_numa_memblock():
* Change nodes[] to int basis points (one hundredth of 1% or
1/10000) instead of phys_addr_t fraction denominators
* Rename parameter nodes[] to node_fracs[]
PATCH 2:
- tests/alloc_nid_api.c:
+ Update node_fractions[] to reflect changes in PATCH 1
v3 -> v4
Based on feedback from David Hildenbrand:
PATCH 1:
- tests/common.h:
+ Remove #define MEM_FACTOR
PATCH 2:
- tests/alloc_nid_api.c:
+ Add missing blank line after alloc_nid_test_flags = flags;
PATCH 2, PATCH 3, PATCH 4:
- tests/alloc_nid_api.c:
+ Define variables in new tests in a single block
+ Change "cleared memory region" to "memory region" in comment
blocks for new tests
Based on feedback from Mike Rapoport:
PATCH 1:
- tests/common.c:
+ Remove node_sizes[] array
- tests/common.c, tests/common.h:
+ Combine setup_numa_memblock_generic() and setup_numa_memblock():
* Remove setup_numa_memblock(void)
* Change setup_numa_memblock_generic() to setup_numa_memblock()
and remove the factor and node_cnt parameters
* Change nodes[] parameter to an array containing the
* denominators
of the fractions of MEM_SIZE contained in each node
e.g., if nodes[0] = SZ_8, node 0 will contain 1/8th of
MEM_SIZE
PATCH 2:
- tests/alloc_nid_api.c:
+ Add node_fractions[] array:
* Based on values from node_sizes[] array previously in PATCH 1
* Update to fit the new nodes[] parameter of
* setup_numa_memblock()
v2 -> v3
PATCH 2, PATCH 3, PATCH 4:
- tests/alloc_nid_api.c:
+ Edits for consistency between tests and test naming styles:
* Change "numa_top_down" to "top_down_numa"
* Change "numa_bottom_up" to "bottom_up_numa"
* Move "generic" to immediately before "check"
* alloc_try_nid_bottom_up_numa_small_node_check() and
alloc_try_nid_bottom_up_numa_node_reserved_check():
- Separate size definition from its declaration
Updates based on changes to the dependent patch set noted above:
PATCH 2, PATCH 3, PATCH 4:
- tests/alloc_nid_api.c:
+ get_func_testing():
* Rename to get_memblock_alloc_try_nid_name().
+ Update calls to verify_mem_content() to assert_mem_content().
v1 -> v2
Updates based on changes to the dependent patch set noted above:
PATCH 2, PATCH 3, PATCH 4:
- tests/alloc_nid_api.c:
+ Update calls to verify_mem_content() to include the flags parameter
required by the new, common verify_mem_content() function.
---
Rebecca Mckeever (4):
memblock tests: add simulation of physical memory with multiple NUMA
nodes
memblock tests: add top-down NUMA tests for memblock_alloc_try_nid*
memblock tests: add bottom-up NUMA tests for memblock_alloc_try_nid*
memblock tests: add generic NUMA tests for memblock_alloc_try_nid*
.../testing/memblock/scripts/Makefile.include | 2 +-
tools/testing/memblock/tests/alloc_nid_api.c | 1466 ++++++++++++++++-
tools/testing/memblock/tests/alloc_nid_api.h | 16 +
tools/testing/memblock/tests/common.c | 31 +
tools/testing/memblock/tests/common.h | 22 +-
5 files changed, 1524 insertions(+), 13 deletions(-)
--
2.25.1
Add function setup_numa_memblock() for setting up a memory layout with
multiple NUMA nodes in a previously allocated dummy physical memory.
This function can be used in place of setup_memblock() in tests that need
to simulate a NUMA system.
setup_numa_memblock():
- allows for setting up a memory layout by specifying the fraction of
MEM_SIZE in each node
Set CONFIG_NODES_SHIFT to 4 when building with NUMA=1 to allow for up to
16 NUMA nodes.
Reviewed-by: David Hildenbrand <[email protected]>
Signed-off-by: Rebecca Mckeever <[email protected]>
---
.../testing/memblock/scripts/Makefile.include | 2 +-
tools/testing/memblock/tests/common.c | 31 +++++++++++++++++++
tools/testing/memblock/tests/common.h | 4 ++-
3 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/tools/testing/memblock/scripts/Makefile.include b/tools/testing/memblock/scripts/Makefile.include
index aa6d82d56a23..998281723590 100644
--- a/tools/testing/memblock/scripts/Makefile.include
+++ b/tools/testing/memblock/scripts/Makefile.include
@@ -3,7 +3,7 @@
# Simulate CONFIG_NUMA=y
ifeq ($(NUMA), 1)
- CFLAGS += -D CONFIG_NUMA
+ CFLAGS += -D CONFIG_NUMA -D CONFIG_NODES_SHIFT=4
endif
# Use 32 bit physical addresses.
diff --git a/tools/testing/memblock/tests/common.c b/tools/testing/memblock/tests/common.c
index eec6901081af..3f795047bbe1 100644
--- a/tools/testing/memblock/tests/common.c
+++ b/tools/testing/memblock/tests/common.c
@@ -9,6 +9,7 @@
#define INIT_MEMBLOCK_RESERVED_REGIONS INIT_MEMBLOCK_REGIONS
#define PREFIXES_MAX 15
#define DELIM ": "
+#define BASIS 10000
static struct test_memory memory_block;
static const char __maybe_unused *prefixes[PREFIXES_MAX];
@@ -72,6 +73,36 @@ void setup_memblock(void)
fill_memblock();
}
+/**
+ * setup_numa_memblock:
+ * Set up a memory layout with multiple NUMA nodes in a previously allocated
+ * dummy physical memory.
+ * @node_fracs: an array representing the fraction of MEM_SIZE contained in
+ * each node in basis point units (one hundredth of 1% or 1/10000).
+ * For example, if node 0 should contain 1/8 of MEM_SIZE,
+ * node_fracs[0] = 1250.
+ *
+ * The nids will be set to 0 through NUMA_NODES - 1.
+ */
+void setup_numa_memblock(const unsigned int node_fracs[])
+{
+ phys_addr_t base;
+ int flags;
+
+ reset_memblock_regions();
+ base = (phys_addr_t)memory_block.base;
+ flags = (movable_node_is_enabled()) ? MEMBLOCK_NONE : MEMBLOCK_HOTPLUG;
+
+ for (int i = 0; i < NUMA_NODES; i++) {
+ assert(node_fracs[i] <= BASIS);
+ phys_addr_t size = MEM_SIZE * node_fracs[i] / BASIS;
+
+ memblock_add_node(base, size, i, flags);
+ base += size;
+ }
+ fill_memblock();
+}
+
void dummy_physical_memory_init(void)
{
memory_block.base = malloc(MEM_SIZE);
diff --git a/tools/testing/memblock/tests/common.h b/tools/testing/memblock/tests/common.h
index 78128e109a95..def71648887f 100644
--- a/tools/testing/memblock/tests/common.h
+++ b/tools/testing/memblock/tests/common.h
@@ -10,7 +10,8 @@
#include <linux/printk.h>
#include <../selftests/kselftest.h>
-#define MEM_SIZE SZ_16K
+#define MEM_SIZE SZ_16K
+#define NUMA_NODES 8
enum test_flags {
/* No special request. */
@@ -102,6 +103,7 @@ struct region {
void reset_memblock_regions(void);
void reset_memblock_attributes(void);
void setup_memblock(void);
+void setup_numa_memblock(const unsigned int node_fracs[]);
void dummy_physical_memory_init(void);
void dummy_physical_memory_cleanup(void);
void parse_args(int argc, char **argv);
--
2.25.1
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
Acked-by: David Hildenbrand <[email protected]>
Signed-off-by: Rebecca Mckeever <[email protected]>
---
tools/testing/memblock/tests/alloc_nid_api.c | 701 ++++++++++++++++++-
tools/testing/memblock/tests/alloc_nid_api.h | 16 +
tools/testing/memblock/tests/common.h | 18 +
3 files changed, 724 insertions(+), 11 deletions(-)
diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/memblock/tests/alloc_nid_api.c
index db5daa50fa72..b13fcbcac457 100644
--- a/tools/testing/memblock/tests/alloc_nid_api.c
+++ b/tools/testing/memblock/tests/alloc_nid_api.c
@@ -3,6 +3,21 @@
static int alloc_nid_test_flags = TEST_F_NONE;
+/*
+ * contains the fraction of MEM_SIZE contained in each node in basis point
+ * units (one hundredth of 1% or 1/10000)
+ */
+static const unsigned int node_fractions[] = {
+ 2500, /* 1/4 */
+ 625, /* 1/16 */
+ 1250, /* 1/8 */
+ 1250, /* 1/8 */
+ 625, /* 1/16 */
+ 625, /* 1/16 */
+ 2500, /* 1/4 */
+ 625, /* 1/16 */
+};
+
static inline const char * const get_memblock_alloc_try_nid_name(int flags)
{
if (flags & TEST_F_RAW)
@@ -1054,7 +1069,7 @@ static int alloc_try_nid_bottom_up_cap_min_check(void)
return 0;
}
-/* Test case wrappers */
+/* Test case wrappers for range tests */
static int alloc_try_nid_simple_check(void)
{
test_print("\tRunning %s...\n", __func__);
@@ -1186,17 +1201,10 @@ static int alloc_try_nid_low_max_check(void)
return 0;
}
-static int memblock_alloc_nid_checks_internal(int flags)
+static int memblock_alloc_nid_range_checks(void)
{
- const char *func = get_memblock_alloc_try_nid_name(flags);
-
- alloc_nid_test_flags = flags;
- prefix_reset();
- prefix_push(func);
- test_print("Running %s tests...\n", func);
-
- reset_memblock_attributes();
- dummy_physical_memory_init();
+ test_print("Running %s range tests...\n",
+ get_memblock_alloc_try_nid_name(alloc_nid_test_flags));
alloc_try_nid_simple_check();
alloc_try_nid_misaligned_check();
@@ -1213,6 +1221,677 @@ static int memblock_alloc_nid_checks_internal(int flags)
alloc_try_nid_reserved_all_check();
alloc_try_nid_low_max_check();
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * has enough memory to allocate a region of the requested size.
+ * Expect to allocate an aligned region at the end of the requested node.
+ */
+static int alloc_try_nid_top_down_numa_simple_check(void)
+{
+ int nid_req = 3;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ ASSERT_LE(SZ_4, req_node->size);
+ size = req_node->size / SZ_4;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, region_end(req_node) - size);
+ ASSERT_LE(req_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * does not have enough memory to allocate a region of the requested size:
+ *
+ * | +-----+ +------------------+ |
+ * | | req | | expected | |
+ * +---+-----+----------+------------------+-----+
+ *
+ * | +---------+ |
+ * | | rgn | |
+ * +-----------------------------+---------+-----+
+ *
+ * Expect to allocate an aligned region at the end of the last node that has
+ * enough memory (in this case, nid = 6) after falling back to NUMA_NO_NODE.
+ */
+static int alloc_try_nid_top_down_numa_small_node_check(void)
+{
+ int nid_req = 1;
+ int nid_exp = 6;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ size = SZ_2 * req_node->size;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, region_end(exp_node) - size);
+ ASSERT_LE(exp_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * is fully reserved:
+ *
+ * | +---------+ +------------------+ |
+ * | |requested| | expected | |
+ * +--------------+---------+------------+------------------+-----+
+ *
+ * | +---------+ +---------+ |
+ * | | reserved| | new | |
+ * +--------------+---------+---------------------+---------+-----+
+ *
+ * Expect to allocate an aligned region at the end of the last node that is
+ * large enough and has enough unreserved memory (in this case, nid = 6) after
+ * falling back to NUMA_NO_NODE. The region count and total size get updated.
+ */
+static int alloc_try_nid_top_down_numa_node_reserved_check(void)
+{
+ int nid_req = 2;
+ int nid_exp = 6;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[1];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ size = req_node->size;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ memblock_reserve(req_node->base, req_node->size);
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, region_end(exp_node) - size);
+ ASSERT_LE(exp_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 2);
+ ASSERT_EQ(memblock.reserved.total_size, size + req_node->size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * is partially reserved but has enough memory for the allocated region:
+ *
+ * | +---------------------------------------+ |
+ * | | requested | |
+ * +-----------+---------------------------------------+----------+
+ *
+ * | +------------------+ +-----+ |
+ * | | reserved | | new | |
+ * +-----------+------------------+--------------+-----+----------+
+ *
+ * Expect to allocate an aligned region at the end of the requested node. The
+ * region count and total size get updated.
+ */
+static int alloc_try_nid_top_down_numa_part_reserved_check(void)
+{
+ int nid_req = 4;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[1];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ void *allocated_ptr = NULL;
+ struct region r1;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ ASSERT_LE(SZ_8, req_node->size);
+ r1.base = req_node->base;
+ r1.size = req_node->size / SZ_2;
+ size = r1.size / SZ_4;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ memblock_reserve(r1.base, r1.size);
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, region_end(req_node) - size);
+ ASSERT_LE(req_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 2);
+ ASSERT_EQ(memblock.reserved.total_size, size + r1.size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * is partially reserved and does not have enough contiguous memory for the
+ * allocated region:
+ *
+ * | +-----------------------+ +----------------------|
+ * | | requested | | expected |
+ * +-----------+-----------------------+---------+----------------------+
+ *
+ * | +----------+ +-----------|
+ * | | reserved | | new |
+ * +-----------------+----------+---------------------------+-----------+
+ *
+ * Expect to allocate an aligned region at the end of the last node that is
+ * large enough and has enough unreserved memory (in this case,
+ * nid = NUMA_NODES - 1) after falling back to NUMA_NO_NODE. The region count
+ * and total size get updated.
+ */
+static int alloc_try_nid_top_down_numa_part_reserved_fallback_check(void)
+{
+ int nid_req = 4;
+ int nid_exp = NUMA_NODES - 1;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[1];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ struct region r1;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ ASSERT_LE(SZ_4, req_node->size);
+ size = req_node->size / SZ_2;
+ r1.base = req_node->base + (size / SZ_2);
+ r1.size = size;
+
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ memblock_reserve(r1.base, r1.size);
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, region_end(exp_node) - size);
+ ASSERT_LE(exp_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 2);
+ ASSERT_EQ(memblock.reserved.total_size, size + r1.size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region that spans over the min_addr
+ * and max_addr range and overlaps with two different nodes, where the first
+ * node is the requested node:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +-----------------------+-----------+ |
+ * | | requested | node3 | |
+ * +-----------+-----------------------+-----------+--------------+
+ * + +
+ * | +-----------+ |
+ * | | rgn | |
+ * +-----------------------+-----------+--------------------------+
+ *
+ * Expect to drop the lower limit and allocate a memory region that ends at
+ * the end of the requested node.
+ */
+static int alloc_try_nid_top_down_numa_split_range_low_check(void)
+{
+ int nid_req = 2;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_512;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+ phys_addr_t req_node_end;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ req_node_end = region_end(req_node);
+ min_addr = req_node_end - SZ_256;
+ max_addr = min_addr + size;
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, req_node_end - size);
+ ASSERT_LE(req_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region that spans over the min_addr
+ * and max_addr range and overlaps with two different nodes, where the second
+ * node is the requested node:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +--------------------------+---------+ |
+ * | | expected |requested| |
+ * +------+--------------------------+---------+----------------+
+ * + +
+ * | +---------+ |
+ * | | rgn | |
+ * +-----------------------+---------+--------------------------+
+ *
+ * Expect to drop the lower limit and allocate a memory region that
+ * ends at the end of the first node that overlaps with the range.
+ */
+static int alloc_try_nid_top_down_numa_split_range_high_check(void)
+{
+ int nid_req = 3;
+ int nid_exp = nid_req - 1;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_512;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+ phys_addr_t exp_node_end;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ exp_node_end = region_end(exp_node);
+ min_addr = exp_node_end - SZ_256;
+ max_addr = min_addr + size;
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, exp_node_end - size);
+ ASSERT_LE(exp_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region that spans over the min_addr
+ * and max_addr range and overlaps with two different nodes, where the requested
+ * node ends before min_addr:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +---------------+ +-------------+---------+ |
+ * | | requested | | node1 | node2 | |
+ * +----+---------------+--------+-------------+---------+----------+
+ * + +
+ * | +---------+ |
+ * | | rgn | |
+ * +----------+---------+-------------------------------------------+
+ *
+ * Expect to drop the lower limit and allocate a memory region that ends at
+ * the end of the requested node.
+ */
+static int alloc_try_nid_top_down_numa_no_overlap_split_check(void)
+{
+ int nid_req = 2;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *node2 = &memblock.memory.regions[6];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ size = SZ_512;
+ min_addr = node2->base - SZ_256;
+ max_addr = min_addr + size;
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, region_end(req_node) - size);
+ ASSERT_LE(req_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate memory within min_addr and max_add range when
+ * the requested node and the range do not overlap, and requested node ends
+ * before min_addr. The range overlaps with multiple nodes along node
+ * boundaries:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * |-----------+ +----------+----...----+----------+ |
+ * | requested | | min node | ... | max node | |
+ * +-----------+-----------+----------+----...----+----------+------+
+ * + +
+ * | +-----+ |
+ * | | rgn | |
+ * +---------------------------------------------------+-----+------+
+ *
+ * Expect to allocate a memory region at the end of the final node in
+ * the range after falling back to NUMA_NO_NODE.
+ */
+static int alloc_try_nid_top_down_numa_no_overlap_low_check(void)
+{
+ int nid_req = 0;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *min_node = &memblock.memory.regions[2];
+ struct memblock_region *max_node = &memblock.memory.regions[5];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_64;
+ phys_addr_t max_addr;
+ phys_addr_t min_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ min_addr = min_node->base;
+ max_addr = region_end(max_node);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, max_addr - size);
+ ASSERT_LE(max_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate memory within min_addr and max_add range when
+ * the requested node and the range do not overlap, and requested node starts
+ * after max_addr. The range overlaps with multiple nodes along node
+ * boundaries:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +----------+----...----+----------+ +-----------+ |
+ * | | min node | ... | max node | | requested | |
+ * +-----+----------+----...----+----------+--------+-----------+---+
+ * + +
+ * | +-----+ |
+ * | | rgn | |
+ * +---------------------------------+-----+------------------------+
+ *
+ * Expect to allocate a memory region at the end of the final node in
+ * the range after falling back to NUMA_NO_NODE.
+ */
+static int alloc_try_nid_top_down_numa_no_overlap_high_check(void)
+{
+ int nid_req = 7;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *min_node = &memblock.memory.regions[2];
+ struct memblock_region *max_node = &memblock.memory.regions[5];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_64;
+ phys_addr_t max_addr;
+ phys_addr_t min_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ min_addr = min_node->base;
+ max_addr = region_end(max_node);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, max_addr - size);
+ ASSERT_LE(max_node->base, new_rgn->base);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/* Test case wrappers for NUMA tests */
+static int alloc_try_nid_numa_simple_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_simple_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_small_node_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_small_node_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_node_reserved_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_node_reserved_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_part_reserved_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_part_reserved_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_part_reserved_fallback_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_part_reserved_fallback_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_split_range_low_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_split_range_low_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_split_range_high_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_split_range_high_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_no_overlap_split_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_no_overlap_split_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_no_overlap_low_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_no_overlap_low_check();
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_no_overlap_high_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ memblock_set_bottom_up(false);
+ alloc_try_nid_top_down_numa_no_overlap_high_check();
+
+ return 0;
+}
+
+int __memblock_alloc_nid_numa_checks(void)
+{
+ test_print("Running %s NUMA tests...\n",
+ get_memblock_alloc_try_nid_name(alloc_nid_test_flags));
+
+ alloc_try_nid_numa_simple_check();
+ alloc_try_nid_numa_small_node_check();
+ alloc_try_nid_numa_node_reserved_check();
+ alloc_try_nid_numa_part_reserved_check();
+ alloc_try_nid_numa_part_reserved_fallback_check();
+ alloc_try_nid_numa_split_range_low_check();
+ alloc_try_nid_numa_split_range_high_check();
+
+ alloc_try_nid_numa_no_overlap_split_check();
+ alloc_try_nid_numa_no_overlap_low_check();
+ alloc_try_nid_numa_no_overlap_high_check();
+
+ return 0;
+}
+
+static int memblock_alloc_nid_checks_internal(int flags)
+{
+ alloc_nid_test_flags = flags;
+
+ prefix_reset();
+ prefix_push(get_memblock_alloc_try_nid_name(flags));
+
+ reset_memblock_attributes();
+ dummy_physical_memory_init();
+
+ memblock_alloc_nid_range_checks();
+ memblock_alloc_nid_numa_checks();
+
dummy_physical_memory_cleanup();
prefix_pop();
diff --git a/tools/testing/memblock/tests/alloc_nid_api.h b/tools/testing/memblock/tests/alloc_nid_api.h
index b35cf3c3f489..92d07d230e18 100644
--- a/tools/testing/memblock/tests/alloc_nid_api.h
+++ b/tools/testing/memblock/tests/alloc_nid_api.h
@@ -5,5 +5,21 @@
#include "common.h"
int memblock_alloc_nid_checks(void);
+int __memblock_alloc_nid_numa_checks(void);
+
+#ifdef CONFIG_NUMA
+static inline int memblock_alloc_nid_numa_checks(void)
+{
+ __memblock_alloc_nid_numa_checks();
+ return 0;
+}
+
+#else
+static inline int memblock_alloc_nid_numa_checks(void)
+{
+ return 0;
+}
+
+#endif /* CONFIG_NUMA */
#endif
diff --git a/tools/testing/memblock/tests/common.h b/tools/testing/memblock/tests/common.h
index def71648887f..d6bbbe63bfc3 100644
--- a/tools/testing/memblock/tests/common.h
+++ b/tools/testing/memblock/tests/common.h
@@ -59,6 +59,19 @@ enum test_flags {
assert((_expected) < (_seen)); \
} while (0)
+/**
+ * ASSERT_LE():
+ * Check the condition
+ * @_expected <= @_seen
+ * If false, print failed test message (if running with --verbose) and then
+ * assert.
+ */
+#define ASSERT_LE(_expected, _seen) do { \
+ if ((_expected) > (_seen)) \
+ test_fail(); \
+ assert((_expected) <= (_seen)); \
+} while (0)
+
/**
* ASSERT_MEM_EQ():
* Check that the first @_size bytes of @_seen are all equal to @_expected.
@@ -100,6 +113,11 @@ struct region {
phys_addr_t size;
};
+static inline phys_addr_t __maybe_unused region_end(struct memblock_region *rgn)
+{
+ return rgn->base + rgn->size;
+}
+
void reset_memblock_regions(void);
void reset_memblock_attributes(void);
void setup_memblock(void);
--
2.25.1
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 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
- 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
Acked-by: David Hildenbrand <[email protected]>
Signed-off-by: Rebecca Mckeever <[email protected]>
---
tools/testing/memblock/tests/alloc_nid_api.c | 568 +++++++++++++++++++
1 file changed, 568 insertions(+)
diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/memblock/tests/alloc_nid_api.c
index b13fcbcac457..7247fa145d7d 100644
--- a/tools/testing/memblock/tests/alloc_nid_api.c
+++ b/tools/testing/memblock/tests/alloc_nid_api.c
@@ -1768,12 +1768,562 @@ static int alloc_try_nid_top_down_numa_no_overlap_high_check(void)
return 0;
}
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * has enough memory to allocate a region of the requested size.
+ * Expect to allocate an aligned region at the beginning of the requested node.
+ */
+static int alloc_try_nid_bottom_up_numa_simple_check(void)
+{
+ int nid_req = 3;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ ASSERT_LE(SZ_4, req_node->size);
+ size = req_node->size / SZ_4;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, req_node->base);
+ ASSERT_LE(region_end(new_rgn), region_end(req_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * does not have enough memory to allocate a region of the requested size:
+ *
+ * |----------------------+-----+ |
+ * | expected | req | |
+ * +----------------------+-----+----------------+
+ *
+ * |---------+ |
+ * | rgn | |
+ * +---------+-----------------------------------+
+ *
+ * Expect to allocate an aligned region at the beginning of the first node that
+ * has enough memory (in this case, nid = 0) after falling back to NUMA_NO_NODE.
+ */
+static int alloc_try_nid_bottom_up_numa_small_node_check(void)
+{
+ int nid_req = 1;
+ int nid_exp = 0;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ size = SZ_2 * req_node->size;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, exp_node->base);
+ ASSERT_LE(region_end(new_rgn), region_end(exp_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * is fully reserved:
+ *
+ * |----------------------+ +-----------+ |
+ * | expected | | requested | |
+ * +----------------------+-----+-----------+--------------------+
+ *
+ * |-----------+ +-----------+ |
+ * | new | | reserved | |
+ * +-----------+----------------+-----------+--------------------+
+ *
+ * Expect to allocate an aligned region at the beginning of the first node that
+ * is large enough and has enough unreserved memory (in this case, nid = 0)
+ * after falling back to NUMA_NO_NODE. The region count and total size get
+ * updated.
+ */
+static int alloc_try_nid_bottom_up_numa_node_reserved_check(void)
+{
+ int nid_req = 2;
+ int nid_exp = 0;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ size = req_node->size;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ memblock_reserve(req_node->base, req_node->size);
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, exp_node->base);
+ ASSERT_LE(region_end(new_rgn), region_end(exp_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 2);
+ ASSERT_EQ(memblock.reserved.total_size, size + req_node->size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * is partially reserved but has enough memory for the allocated region:
+ *
+ * | +---------------------------------------+ |
+ * | | requested | |
+ * +-----------+---------------------------------------+---------+
+ *
+ * | +------------------+-----+ |
+ * | | reserved | new | |
+ * +-----------+------------------+-----+------------------------+
+ *
+ * Expect to allocate an aligned region in the requested node that merges with
+ * the existing reserved region. The total size gets updated.
+ */
+static int alloc_try_nid_bottom_up_numa_part_reserved_check(void)
+{
+ int nid_req = 4;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ void *allocated_ptr = NULL;
+ struct region r1;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+ phys_addr_t total_size;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ ASSERT_LE(SZ_8, req_node->size);
+ r1.base = req_node->base;
+ r1.size = req_node->size / SZ_2;
+ size = r1.size / SZ_4;
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+ total_size = size + r1.size;
+
+ memblock_reserve(r1.base, r1.size);
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, total_size);
+ ASSERT_EQ(new_rgn->base, req_node->base);
+ ASSERT_LE(region_end(new_rgn), region_end(req_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, total_size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * is partially reserved and does not have enough contiguous memory for the
+ * allocated region:
+ *
+ * |----------------------+ +-----------------------+ |
+ * | expected | | requested | |
+ * +----------------------+-------+-----------------------+---------+
+ *
+ * |-----------+ +----------+ |
+ * | new | | reserved | |
+ * +-----------+------------------------+----------+----------------+
+ *
+ * Expect to allocate an aligned region at the beginning of the first
+ * node that is large enough and has enough unreserved memory (in this case,
+ * nid = 0) after falling back to NUMA_NO_NODE. The region count and total size
+ * get updated.
+ */
+static int alloc_try_nid_bottom_up_numa_part_reserved_fallback_check(void)
+{
+ int nid_req = 4;
+ int nid_exp = 0;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ struct region r1;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ ASSERT_LE(SZ_4, req_node->size);
+ size = req_node->size / SZ_2;
+ r1.base = req_node->base + (size / SZ_2);
+ r1.size = size;
+
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ memblock_reserve(r1.base, r1.size);
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, exp_node->base);
+ ASSERT_LE(region_end(new_rgn), region_end(exp_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 2);
+ ASSERT_EQ(memblock.reserved.total_size, size + r1.size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region that spans over the min_addr
+ * and max_addr range and overlaps with two different nodes, where the first
+ * node is the requested node:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +-----------------------+-----------+ |
+ * | | requested | node3 | |
+ * +-----------+-----------------------+-----------+--------------+
+ * + +
+ * | +-----------+ |
+ * | | rgn | |
+ * +-----------+-----------+--------------------------------------+
+ *
+ * Expect to drop the lower limit and allocate a memory region at the beginning
+ * of the requested node.
+ */
+static int alloc_try_nid_bottom_up_numa_split_range_low_check(void)
+{
+ int nid_req = 2;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_512;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+ phys_addr_t req_node_end;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ req_node_end = region_end(req_node);
+ min_addr = req_node_end - SZ_256;
+ max_addr = min_addr + size;
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, req_node->base);
+ ASSERT_LE(region_end(new_rgn), req_node_end);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region that spans over the min_addr
+ * and max_addr range and overlaps with two different nodes, where the second
+ * node is the requested node:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * |------------------+ +----------------------+---------+ |
+ * | expected | | previous |requested| |
+ * +------------------+--------+----------------------+---------+------+
+ * + +
+ * |---------+ |
+ * | rgn | |
+ * +---------+---------------------------------------------------------+
+ *
+ * Expect to drop the lower limit and allocate a memory region at the beginning
+ * of the first node that has enough memory.
+ */
+static int alloc_try_nid_bottom_up_numa_split_range_high_check(void)
+{
+ int nid_req = 3;
+ int nid_exp = 0;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *exp_node = &memblock.memory.regions[nid_exp];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_512;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+ phys_addr_t exp_node_end;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ exp_node_end = region_end(req_node);
+ min_addr = req_node->base - SZ_256;
+ max_addr = min_addr + size;
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, exp_node->base);
+ ASSERT_LE(region_end(new_rgn), exp_node_end);
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate a memory region that spans over the min_addr
+ * and max_addr range and overlaps with two different nodes, where the requested
+ * node ends before min_addr:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +---------------+ +-------------+---------+ |
+ * | | requested | | node1 | node2 | |
+ * +----+---------------+--------+-------------+---------+---------+
+ * + +
+ * | +---------+ |
+ * | | rgn | |
+ * +----+---------+------------------------------------------------+
+ *
+ * Expect to drop the lower limit and allocate a memory region that starts at
+ * the beginning of the requested node.
+ */
+static int alloc_try_nid_bottom_up_numa_no_overlap_split_check(void)
+{
+ int nid_req = 2;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *node2 = &memblock.memory.regions[6];
+ void *allocated_ptr = NULL;
+ phys_addr_t size;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ size = SZ_512;
+ min_addr = node2->base - SZ_256;
+ max_addr = min_addr + size;
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, req_node->base);
+ ASSERT_LE(region_end(new_rgn), region_end(req_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate memory within min_addr and max_add range when
+ * the requested node and the range do not overlap, and requested node ends
+ * before min_addr. The range overlaps with multiple nodes along node
+ * boundaries:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * |-----------+ +----------+----...----+----------+ |
+ * | requested | | min node | ... | max node | |
+ * +-----------+-----------+----------+----...----+----------+------+
+ * + +
+ * | +-----+ |
+ * | | rgn | |
+ * +-----------------------+-----+----------------------------------+
+ *
+ * Expect to allocate a memory region at the beginning of the first node
+ * in the range after falling back to NUMA_NO_NODE.
+ */
+static int alloc_try_nid_bottom_up_numa_no_overlap_low_check(void)
+{
+ int nid_req = 0;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *min_node = &memblock.memory.regions[2];
+ struct memblock_region *max_node = &memblock.memory.regions[5];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_64;
+ phys_addr_t max_addr;
+ phys_addr_t min_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ min_addr = min_node->base;
+ max_addr = region_end(max_node);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, min_addr);
+ ASSERT_LE(region_end(new_rgn), region_end(min_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate memory within min_addr and max_add range when
+ * the requested node and the range do not overlap, and requested node starts
+ * after max_addr. The range overlaps with multiple nodes along node
+ * boundaries:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +----------+----...----+----------+ +---------+ |
+ * | | min node | ... | max node | |requested| |
+ * +-----+----------+----...----+----------+---------+---------+---+
+ * + +
+ * | +-----+ |
+ * | | rgn | |
+ * +-----+-----+---------------------------------------------------+
+ *
+ * Expect to allocate a memory region at the beginning of the first node
+ * in the range after falling back to NUMA_NO_NODE.
+ */
+static int alloc_try_nid_bottom_up_numa_no_overlap_high_check(void)
+{
+ int nid_req = 7;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *min_node = &memblock.memory.regions[2];
+ struct memblock_region *max_node = &memblock.memory.regions[5];
+ void *allocated_ptr = NULL;
+ phys_addr_t size = SZ_64;
+ phys_addr_t max_addr;
+ phys_addr_t min_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ min_addr = min_node->base;
+ max_addr = region_end(max_node);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, size);
+ ASSERT_EQ(new_rgn->base, min_addr);
+ ASSERT_LE(region_end(new_rgn), region_end(min_node));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
/* Test case wrappers for NUMA tests */
static int alloc_try_nid_numa_simple_check(void)
{
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_simple_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_simple_check();
return 0;
}
@@ -1783,6 +2333,8 @@ static int alloc_try_nid_numa_small_node_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_small_node_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_small_node_check();
return 0;
}
@@ -1792,6 +2344,8 @@ static int alloc_try_nid_numa_node_reserved_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_node_reserved_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_node_reserved_check();
return 0;
}
@@ -1801,6 +2355,8 @@ static int alloc_try_nid_numa_part_reserved_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_part_reserved_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_part_reserved_check();
return 0;
}
@@ -1810,6 +2366,8 @@ static int alloc_try_nid_numa_part_reserved_fallback_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_part_reserved_fallback_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_part_reserved_fallback_check();
return 0;
}
@@ -1819,6 +2377,8 @@ static int alloc_try_nid_numa_split_range_low_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_split_range_low_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_split_range_low_check();
return 0;
}
@@ -1828,6 +2388,8 @@ static int alloc_try_nid_numa_split_range_high_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_split_range_high_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_split_range_high_check();
return 0;
}
@@ -1837,6 +2399,8 @@ static int alloc_try_nid_numa_no_overlap_split_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_no_overlap_split_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_no_overlap_split_check();
return 0;
}
@@ -1846,6 +2410,8 @@ static int alloc_try_nid_numa_no_overlap_low_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_no_overlap_low_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_no_overlap_low_check();
return 0;
}
@@ -1855,6 +2421,8 @@ static int alloc_try_nid_numa_no_overlap_high_check(void)
test_print("\tRunning %s...\n", __func__);
memblock_set_bottom_up(false);
alloc_try_nid_top_down_numa_no_overlap_high_check();
+ memblock_set_bottom_up(true);
+ alloc_try_nid_bottom_up_numa_no_overlap_high_check();
return 0;
}
--
2.25.1
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, two of these tests set nid != NUMA_NO_NODE. All tests are
run for both top-down and bottom-up allocation directions.
The tested scenarios are:
Range unrestricted:
- region cannot be allocated:
+ none of the nodes have enough memory to allocate the region
Range restricted:
- region can be allocated in the specific node requested without dropping
min_addr:
+ the range fully overlaps with the node, and there are adjacent
reserved regions
- region cannot be allocated:
+ nid is set to NUMA_NO_NODE and the total range can fit the region,
but the range is split between two nodes and everything else is
reserved
Acked-by: David Hildenbrand <[email protected]>
Signed-off-by: Rebecca Mckeever <[email protected]>
---
tools/testing/memblock/tests/alloc_nid_api.c | 197 +++++++++++++++++++
1 file changed, 197 insertions(+)
diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/memblock/tests/alloc_nid_api.c
index 7247fa145d7d..2c2d60f4e3e3 100644
--- a/tools/testing/memblock/tests/alloc_nid_api.c
+++ b/tools/testing/memblock/tests/alloc_nid_api.c
@@ -2316,6 +2316,173 @@ static int alloc_try_nid_bottom_up_numa_no_overlap_high_check(void)
return 0;
}
+/*
+ * A test that tries to allocate a memory region in a specific NUMA node that
+ * does not have enough memory to allocate a region of the requested size.
+ * Additionally, none of the nodes have enough memory to allocate the region:
+ *
+ * +-----------------------------------+
+ * | new |
+ * +-----------------------------------+
+ * |-------+-------+-------+-------+-------+-------+-------+-------|
+ * | node0 | node1 | node2 | node3 | node4 | node5 | node6 | node7 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * Expect no allocation to happen.
+ */
+static int alloc_try_nid_numa_large_region_generic_check(void)
+{
+ int nid_req = 3;
+ void *allocated_ptr = NULL;
+ phys_addr_t size = MEM_SIZE / SZ_2;
+ phys_addr_t min_addr;
+ phys_addr_t max_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ min_addr = memblock_start_of_DRAM();
+ max_addr = memblock_end_of_DRAM();
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+ ASSERT_EQ(allocated_ptr, NULL);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate memory within min_addr and max_addr range when
+ * there are two reserved regions at the borders. The requested node starts at
+ * min_addr and ends at max_addr and is the same size as the region to be
+ * allocated:
+ *
+ * min_addr
+ * | max_addr
+ * | |
+ * v v
+ * | +-----------+-----------------------+-----------------------|
+ * | | node5 | requested | node7 |
+ * +------+-----------+-----------------------+-----------------------+
+ * + +
+ * | +----+-----------------------+----+ |
+ * | | r2 | new | r1 | |
+ * +-------------+----+-----------------------+----+------------------+
+ *
+ * Expect to merge all of the regions into one. The region counter and total
+ * size fields get updated.
+ */
+static int alloc_try_nid_numa_reserved_full_merge_generic_check(void)
+{
+ int nid_req = 6;
+ int nid_next = nid_req + 1;
+ struct memblock_region *new_rgn = &memblock.reserved.regions[0];
+ struct memblock_region *req_node = &memblock.memory.regions[nid_req];
+ struct memblock_region *next_node = &memblock.memory.regions[nid_next];
+ void *allocated_ptr = NULL;
+ struct region r1, r2;
+ phys_addr_t size = req_node->size;
+ phys_addr_t total_size;
+ phys_addr_t max_addr;
+ phys_addr_t min_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ r1.base = next_node->base;
+ r1.size = SZ_128;
+
+ r2.size = SZ_128;
+ r2.base = r1.base - (size + r2.size);
+
+ total_size = r1.size + r2.size + size;
+ min_addr = r2.base + r2.size;
+ max_addr = r1.base;
+
+ memblock_reserve(r1.base, r1.size);
+ memblock_reserve(r2.base, r2.size);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr, nid_req);
+
+ ASSERT_NE(allocated_ptr, NULL);
+ assert_mem_content(allocated_ptr, size, alloc_nid_test_flags);
+
+ ASSERT_EQ(new_rgn->size, total_size);
+ ASSERT_EQ(new_rgn->base, r2.base);
+
+ ASSERT_LE(new_rgn->base, req_node->base);
+ ASSERT_LE(region_end(req_node), region_end(new_rgn));
+
+ ASSERT_EQ(memblock.reserved.cnt, 1);
+ ASSERT_EQ(memblock.reserved.total_size, total_size);
+
+ test_pass_pop();
+
+ return 0;
+}
+
+/*
+ * A test that tries to allocate memory within min_addr and max_add range,
+ * where the total range can fit the region, but it is split between two nodes
+ * and everything else is reserved. Additionally, nid is set to NUMA_NO_NODE
+ * instead of requesting a specific node:
+ *
+ * +-----------+
+ * | new |
+ * +-----------+
+ * | +---------------------+-----------|
+ * | | prev node | next node |
+ * +------+---------------------+-----------+
+ * + +
+ * |----------------------+ +-----|
+ * | r1 | | r2 |
+ * +----------------------+-----------+-----+
+ * ^ ^
+ * | |
+ * | max_addr
+ * |
+ * min_addr
+ *
+ * Expect no allocation to happen.
+ */
+static int alloc_try_nid_numa_split_all_reserved_generic_check(void)
+{
+ void *allocated_ptr = NULL;
+ struct memblock_region *next_node = &memblock.memory.regions[7];
+ struct region r1, r2;
+ phys_addr_t size = SZ_256;
+ phys_addr_t max_addr;
+ phys_addr_t min_addr;
+
+ PREFIX_PUSH();
+ setup_numa_memblock(node_fractions);
+
+ r2.base = next_node->base + SZ_128;
+ r2.size = memblock_end_of_DRAM() - r2.base;
+
+ r1.size = MEM_SIZE - (r2.size + size);
+ r1.base = memblock_start_of_DRAM();
+
+ min_addr = r1.base + r1.size;
+ max_addr = r2.base;
+
+ memblock_reserve(r1.base, r1.size);
+ memblock_reserve(r2.base, r2.size);
+
+ allocated_ptr = run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES,
+ min_addr, max_addr,
+ NUMA_NO_NODE);
+
+ ASSERT_EQ(allocated_ptr, NULL);
+
+ test_pass_pop();
+
+ return 0;
+}
+
/* Test case wrappers for NUMA tests */
static int alloc_try_nid_numa_simple_check(void)
{
@@ -2427,6 +2594,33 @@ static int alloc_try_nid_numa_no_overlap_high_check(void)
return 0;
}
+static int alloc_try_nid_numa_large_region_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ run_top_down(alloc_try_nid_numa_large_region_generic_check);
+ run_bottom_up(alloc_try_nid_numa_large_region_generic_check);
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_reserved_full_merge_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ run_top_down(alloc_try_nid_numa_reserved_full_merge_generic_check);
+ run_bottom_up(alloc_try_nid_numa_reserved_full_merge_generic_check);
+
+ return 0;
+}
+
+static int alloc_try_nid_numa_split_all_reserved_check(void)
+{
+ test_print("\tRunning %s...\n", __func__);
+ run_top_down(alloc_try_nid_numa_split_all_reserved_generic_check);
+ run_bottom_up(alloc_try_nid_numa_split_all_reserved_generic_check);
+
+ return 0;
+}
+
int __memblock_alloc_nid_numa_checks(void)
{
test_print("Running %s NUMA tests...\n",
@@ -2443,6 +2637,9 @@ int __memblock_alloc_nid_numa_checks(void)
alloc_try_nid_numa_no_overlap_split_check();
alloc_try_nid_numa_no_overlap_low_check();
alloc_try_nid_numa_no_overlap_high_check();
+ alloc_try_nid_numa_large_region_check();
+ alloc_try_nid_numa_reserved_full_merge_check();
+ alloc_try_nid_numa_split_all_reserved_check();
return 0;
}
--
2.25.1
On Tue, Sep 13, 2022 at 12:21:08AM -0500, Rebecca Mckeever wrote:
> These patches add additional tests for memblock_alloc_try_nid() and
> memblock_alloc_try_nid_raw() that use a simulated physical
> memory that is set up with multiple NUMA nodes. Additionally, most of
> these tests set nid != NUMA_NO_NODE.
>
> To set up a simulated physical memory with multiple NUMA nodes, patch 1
> introduces setup_numa_memblock(). This function uses a previously
> allocated dummy physical memory. It can be used in place of
> setup_memblock() in tests that need to simulate a NUMA system.
>
> These tests are run twice, once for memblock_alloc_try_nid() and once
> for memblock_alloc_try_nid_raw(), so that both functions are tested with
> the same set of tests. When the tests run memblock_alloc_try_nid(), they
> test that the entire memory region is zero. When the tests run
> memblock_alloc_try_nid_raw(), they test that the entire memory region is
> nonzero.
>
> Rebecca Mckeever (4):
> memblock tests: add simulation of physical memory with multiple NUMA
> nodes
> memblock tests: add top-down NUMA tests for memblock_alloc_try_nid*
> memblock tests: add bottom-up NUMA tests for memblock_alloc_try_nid*
> memblock tests: add generic NUMA tests for memblock_alloc_try_nid*
>
> .../testing/memblock/scripts/Makefile.include | 2 +-
> tools/testing/memblock/tests/alloc_nid_api.c | 1466 ++++++++++++++++-
> tools/testing/memblock/tests/alloc_nid_api.h | 16 +
> tools/testing/memblock/tests/common.c | 31 +
> tools/testing/memblock/tests/common.h | 22 +-
> 5 files changed, 1524 insertions(+), 13 deletions(-)
Applied, thanks!
--
Sincerely yours,
Mike.