diff options
Diffstat (limited to 'mm/memblock.c')
| -rw-r--r-- | mm/memblock.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index a44eab3157f8..952123eba433 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -37,6 +37,8 @@ struct memblock memblock __initdata_memblock = { int memblock_debug __initdata_memblock; static int memblock_can_resize __initdata_memblock; +static int memblock_memory_in_slab __initdata_memblock = 0; +static int memblock_reserved_in_slab __initdata_memblock = 0; /* inline so we don't get a warning when pr_debug is compiled out */ static inline const char *memblock_type_name(struct memblock_type *type) @@ -187,6 +189,7 @@ static int __init_memblock memblock_double_array(struct memblock_type *type) struct memblock_region *new_array, *old_array; phys_addr_t old_size, new_size, addr; int use_slab = slab_is_available(); + int *in_slab; /* We don't allow resizing until we know about the reserved regions * of memory that aren't suitable for allocation @@ -198,6 +201,12 @@ static int __init_memblock memblock_double_array(struct memblock_type *type) old_size = type->max * sizeof(struct memblock_region); new_size = old_size << 1; + /* Retrieve the slab flag */ + if (type == &memblock.memory) + in_slab = &memblock_memory_in_slab; + else + in_slab = &memblock_reserved_in_slab; + /* Try to find some space for it. * * WARNING: We assume that either slab_is_available() and we use it or @@ -212,14 +221,15 @@ static int __init_memblock memblock_double_array(struct memblock_type *type) if (use_slab) { new_array = kmalloc(new_size, GFP_KERNEL); addr = new_array ? __pa(new_array) : 0; - } else + } else { addr = memblock_find_in_range(0, MEMBLOCK_ALLOC_ACCESSIBLE, new_size, sizeof(phys_addr_t)); + new_array = addr ? __va(addr) : 0; + } if (!addr) { pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n", memblock_type_name(type), type->max, type->max * 2); return -1; } - new_array = __va(addr); memblock_dbg("memblock: %s array is doubled to %ld at [%#010llx-%#010llx]", memblock_type_name(type), type->max * 2, (u64)addr, (u64)addr + new_size - 1); @@ -234,22 +244,24 @@ static int __init_memblock memblock_double_array(struct memblock_type *type) type->regions = new_array; type->max <<= 1; - /* If we use SLAB that's it, we are done */ - if (use_slab) - return 0; - - /* Add the new reserved region now. Should not fail ! */ - BUG_ON(memblock_reserve(addr, new_size)); - - /* If the array wasn't our static init one, then free it. We only do - * that before SLAB is available as later on, we don't know whether - * to use kfree or free_bootmem_pages(). Shouldn't be a big deal - * anyways + /* Free old array. We needn't free it if the array is the + * static one */ - if (old_array != memblock_memory_init_regions && - old_array != memblock_reserved_init_regions) + if (*in_slab) + kfree(old_array); + else if (old_array != memblock_memory_init_regions && + old_array != memblock_reserved_init_regions) memblock_free(__pa(old_array), old_size); + /* Reserve the new array if that comes from the memblock. + * Otherwise, we needn't do it + */ + if (!use_slab) + BUG_ON(memblock_reserve(addr, new_size)); + + /* Update slab flag */ + *in_slab = use_slab; + return 0; } |