diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-07-06 15:39:06 -0700 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-08-05 12:56:12 +1000 |
| commit | bf23c51f1f49d3960f3cd8e3d2e7f943d9c41042 (patch) | |
| tree | 6150486aaeb3bc8601fdf61ebfe5b441af1e3fb7 | |
| parent | 4734b594c6ca1be796d30c82d93fdf5160f45124 (diff) | |
| download | linux-bf23c51f1f49d3960f3cd8e3d2e7f943d9c41042.tar.bz2 | |
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>
| -rw-r--r-- | include/linux/memblock.h | 7 | ||||
| -rw-r--r-- | mm/memblock.c | 10 |
2 files changed, 13 insertions, 4 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h index c9c7b0f344a5..150be938b910 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -18,7 +18,7 @@ #include <asm/memblock.h> -#define MAX_MEMBLOCK_REGIONS 128 +#define INIT_MEMBLOCK_REGIONS 128 struct memblock_region { phys_addr_t base; @@ -26,8 +26,9 @@ struct memblock_region { }; struct memblock_type { - unsigned long cnt; - struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1]; + unsigned long cnt; /* number of regions */ + unsigned long max; /* size of the allocated array */ + struct memblock_region *regions; }; struct memblock { diff --git a/mm/memblock.c b/mm/memblock.c index 5ae413e9afd8..3c474502d92b 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 @@ static void memblock_coalesce_regions(struct memblock_type *type, 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 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph 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. */ |