diff options
| -rw-r--r-- | include/linux/memblock.h | 4 | ||||
| -rw-r--r-- | mm/Kconfig | 3 | ||||
| -rw-r--r-- | mm/memblock.c | 12 |
3 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h index f669016874b3..73dc382e72d8 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -18,6 +18,7 @@ #include <linux/mm.h> #define INIT_MEMBLOCK_REGIONS 128 +#define INIT_PHYSMEM_REGIONS 4 /* Definition of memblock flags. */ #define MEMBLOCK_HOTPLUG 0x1 /* hotpluggable region */ @@ -43,6 +44,9 @@ struct memblock { phys_addr_t current_limit; struct memblock_type memory; struct memblock_type reserved; +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP + struct memblock_type physmem; +#endif }; extern struct memblock memblock; diff --git a/mm/Kconfig b/mm/Kconfig index 1b5a95f0fa01..28cec518f4d4 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -134,6 +134,9 @@ config HAVE_MEMBLOCK config HAVE_MEMBLOCK_NODE_MAP boolean +config HAVE_MEMBLOCK_PHYS_MAP + boolean + config ARCH_DISCARD_MEMBLOCK boolean diff --git a/mm/memblock.c b/mm/memblock.c index 9edd0928daab..a810ba923cdd 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -27,6 +27,9 @@ static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock; static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock; +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP +static struct memblock_region memblock_physmem_init_regions[INIT_PHYSMEM_REGIONS] __initdata_memblock; +#endif struct memblock memblock __initdata_memblock = { .memory.regions = memblock_memory_init_regions, @@ -37,6 +40,12 @@ struct memblock memblock __initdata_memblock = { .reserved.cnt = 1, /* empty dummy entry */ .reserved.max = INIT_MEMBLOCK_REGIONS, +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP + .physmem.regions = memblock_physmem_init_regions, + .physmem.cnt = 1, /* empty dummy entry */ + .physmem.max = INIT_PHYSMEM_REGIONS, +#endif + .bottom_up = false, .current_limit = MEMBLOCK_ALLOC_ANYWHERE, }; @@ -1553,6 +1562,9 @@ static int __init memblock_init_debugfs(void) return -ENXIO; debugfs_create_file("memory", S_IRUGO, root, &memblock.memory, &memblock_debug_fops); debugfs_create_file("reserved", S_IRUGO, root, &memblock.reserved, &memblock_debug_fops); +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP + debugfs_create_file("physmem", S_IRUGO, root, &memblock.physmem, &memblock_debug_fops); +#endif return 0; } |