memblock: Move memblock arrays to static storage in memblock.c and make their size a variable
This is in preparation for having resizable arrays.
Note that we still allocate one more than needed, this is unchanged from
the previous implementation.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/mm/memblock.c b/mm/memblock.c
index 5ae413e..3c47450 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -18,6 +18,8 @@
struct memblock memblock;
static int memblock_debug;
+static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static int __init early_memblock(char *p)
{
@@ -104,6 +106,12 @@
void __init memblock_init(void)
{
+ /* 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...
*/
@@ -169,7 +177,7 @@
if (coalesced)
return coalesced;
- if (type->cnt >= MAX_MEMBLOCK_REGIONS)
+ if (type->cnt >= type->max)
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */