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memblock: Kill memblock_init()

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memblock_init() initializes arrays for regions and memblock itself;
however, all these can be done with struct initializers and
memblock_init() can be removed.  This patch kills memblock_init() and
initializes memblock with struct initializer.

The only difference is that the first dummy entries don't have .nid
set to MAX_NUMNODES initially.  This doesn't cause any behavior
difference.

Signed-off-by: Tejun Heo <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Yinghai Lu <[email protected]>
Cc: Russell King <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Guan Xuetao <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
This commit is contained in:
Tejun Heo 2011-12-08 10:22:07 -08:00
commit fe091c208a
12 changed files with 14 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

48
mm/memblock.c
View file

@ -20,12 +20,23 @@
#include <linux/seq_file.h>
#include <linux/memblock.h>
struct memblock memblock __initdata_memblock;
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;
struct memblock memblock __initdata_memblock = {
.memory.regions = memblock_memory_init_regions,
.memory.cnt = 1, /* empty dummy entry */
.memory.max = INIT_MEMBLOCK_REGIONS,
.reserved.regions = memblock_reserved_init_regions,
.reserved.cnt = 1, /* empty dummy entry */
.reserved.max = INIT_MEMBLOCK_REGIONS,
.current_limit = MEMBLOCK_ALLOC_ANYWHERE,
};
int memblock_debug __initdata_memblock;
int memblock_can_resize __initdata_memblock;
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;
/* 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)
@ -920,37 +931,6 @@ void __init memblock_analyze(void)
memblock_can_resize = 1;
}
void __init memblock_init(void)
{
static int init_done __initdata = 0;
if (init_done)
return;
init_done = 1;
/* Hookup the initial arrays */
memblock.memory.regions = memblock_memory_init_regions;
memblock.memory.max = INIT_MEMBLOCK_REGIONS;
memblock.reserved.regions = memblock_reserved_init_regions;
memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
memblock.memory.regions[0].base = 0;
memblock.memory.regions[0].size = 0;
memblock_set_region_node(&memblock.memory.regions[0], MAX_NUMNODES);
memblock.memory.cnt = 1;
/* Ditto. */
memblock.reserved.regions[0].base = 0;
memblock.reserved.regions[0].size = 0;
memblock_set_region_node(&memblock.reserved.regions[0], MAX_NUMNODES);
memblock.reserved.cnt = 1;
memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
}
static int __init early_memblock(char *p)
{
if (p && strstr(p, "debug"))