diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/init.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index e5f6fc42834..49eaad9136a 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -201,6 +201,20 @@ static void __init arm_bootmem_init(unsigned long start_pfn, } } +#ifdef CONFIG_ZONE_DMA +static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, + unsigned long dma_size) +{ + if (size[0] <= dma_size) + return; + + size[ZONE_NORMAL] = size[0] - dma_size; + size[ZONE_DMA] = dma_size; + hole[ZONE_NORMAL] = hole[0]; + hole[ZONE_DMA] = 0; +} +#endif + static void __init arm_bootmem_free(unsigned long min, unsigned long max_low, unsigned long max_high) { @@ -243,11 +257,18 @@ static void __init arm_bootmem_free(unsigned long min, unsigned long max_low, #endif } +#ifdef ARM_DMA_ZONE_SIZE +#ifndef CONFIG_ZONE_DMA +#error ARM_DMA_ZONE_SIZE set but no DMA zone to limit allocations +#endif + /* * Adjust the sizes according to any special requirements for * this machine type. */ - arch_adjust_zones(zone_size, zhole_size); + arm_adjust_dma_zone(zone_size, zhole_size, + ARM_DMA_ZONE_SIZE >> PAGE_SHIFT); +#endif free_area_init_node(0, zone_size, min, zhole_size); } |