diff options
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 06ad914928c..8ba75406455 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -15,6 +15,7 @@ #include <linux/mman.h> #include <linux/nodemask.h> +#include <asm/cputype.h> #include <asm/mach-types.h> #include <asm/setup.h> #include <asm/sizes.h> @@ -27,9 +28,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); -extern void _stext, _etext, __data_start, _end; -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; - /* * empty_zero_page is a special page that is used for * zero-initialized data and COW. @@ -578,12 +576,35 @@ void __init iotable_init(struct map_desc *io_desc, int nr) create_mapping(io_desc + i); } +static unsigned long __initdata vmalloc_reserve = SZ_128M; + +/* + * vmalloc=size forces the vmalloc area to be exactly 'size' + * bytes. This can be used to increase (or decrease) the vmalloc + * area - the default is 128m. + */ +static void __init early_vmalloc(char **arg) +{ + vmalloc_reserve = memparse(*arg, arg); + + if (vmalloc_reserve < SZ_16M) { + vmalloc_reserve = SZ_16M; + printk(KERN_WARNING + "vmalloc area too small, limiting to %luMB\n", + vmalloc_reserve >> 20); + } +} +__early_param("vmalloc=", early_vmalloc); + +#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve) + static int __init check_membank_valid(struct membank *mb) { /* - * Check whether this memory region has non-zero size. + * Check whether this memory region has non-zero size or + * invalid node number. */ - if (mb->size == 0) + if (mb->size == 0 || mb->node >= MAX_NUMNODES) return 0; /* @@ -617,8 +638,7 @@ static int __init check_membank_valid(struct membank *mb) static void __init sanity_check_meminfo(struct meminfo *mi) { - int i; - int j; + int i, j; for (i = 0, j = 0; i < mi->nr_banks; i++) { if (check_membank_valid(&mi->bank[i])) |