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memblock tests: Add simulation of physical memory 

Allocation functions that return virtual addresses (with an exception
of _raw variant) clear the allocated memory after reserving it. This
requires valid memory ranges in memblock.memory.

Introduce memory_block variable to store memory that can be registered
with memblock data structure. Move assert.h and size.h includes to common.h
to share them between the test files.

Signed-off-by: Karolina Drobnik <karolinadrobnik@gmail.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/dce115503c74a6936c44694b00014658a1bb6522.1646055639.git.karolinadrobnik@gmail.com
This commit is contained in:
Karolina Drobnik 2022-02-28 15:46:44 +01:00 committed by Mike Rapoport
parent 2c3dacba5d
commit 284d950dd6
4 changed files with 37 additions and 2 deletions
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1
tools/testing/memblock/tests/basic_api.c
View File

@ -1,7 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include <string.h>
#include <linux/memblock.h>
#include <linux/sizes.h>
#include "basic_api.h"
#define EXPECTED_MEMBLOCK_REGIONS 128

1
tools/testing/memblock/tests/basic_api.h
View File

@ -2,7 +2,6 @@
#ifndef _MEMBLOCK_BASIC_H
#define _MEMBLOCK_BASIC_H
#include <assert.h>
#include "common.h"
int memblock_basic_checks(void);

19
tools/testing/memblock/tests/common.c
View File

@ -5,6 +5,8 @@
#define INIT_MEMBLOCK_REGIONS 128
#define INIT_MEMBLOCK_RESERVED_REGIONS INIT_MEMBLOCK_REGIONS
static struct test_memory memory_block;
void reset_memblock_regions(void)
{
memset(memblock.memory.regions, 0,
@ -27,3 +29,20 @@ void reset_memblock_attributes(void)
memblock.bottom_up = false;
memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
}
void setup_memblock(void)
{
reset_memblock_regions();
memblock_add((phys_addr_t)memory_block.base, MEM_SIZE);
}
void dummy_physical_memory_init(void)
{
memory_block.base = malloc(MEM_SIZE);
assert(memory_block.base);
}
void dummy_physical_memory_cleanup(void)
{
free(memory_block.base);
}

18
tools/testing/memblock/tests/common.h
View File

@ -2,8 +2,23 @@
#ifndef _MEMBLOCK_TEST_H
#define _MEMBLOCK_TEST_H
#include <stdlib.h>
#include <assert.h>
#include <linux/types.h>
#include <linux/memblock.h>
#include <linux/sizes.h>
#define MEM_SIZE SZ_16K
/*
* Available memory registered with memblock needs to be valid for allocs
* test to run. This is a convenience wrapper for memory allocated in
* dummy_physical_memory_init() that is later registered with memblock
* in setup_memblock().
*/
struct test_memory {
void *base;
};
struct region {
phys_addr_t base;
@ -12,5 +27,8 @@ struct region {
void reset_memblock_regions(void);
void reset_memblock_attributes(void);
void setup_memblock(void);
void dummy_physical_memory_init(void);
void dummy_physical_memory_cleanup(void);
#endif