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memblock tests: add top-down NUMA tests for memblock_alloc_try_nid*

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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 <david@redhat.com>
Signed-off-by: Rebecca Mckeever <remckee0@gmail.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/84009c5b3969337ccf89df850db56d364f8c228b.1663046060.git.remckee0@gmail.com
This commit is contained in:
Rebecca Mckeever
2022-09-13 00:21:10 -05:00
committed by Mike Rapoport
parent b338bde5a3
commit 50c80241f1
3 changed files with 724 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
tools/testing/memblock/tests/alloc_nid_api.h
View File

@@ -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