diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-05-22 16:20:14 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-16 10:57:35 +0100 |
| commit | 7961239599de71130c852ecfa9a4140f3f60547b (patch) | |
| tree | 99f08f76ad8dfd8c671f713a3ec87769dc315632 /arch/arm | |
| parent | 2f7989efd4398d92b8adffce2e07dd043a0895fe (diff) | |
ARM: Precalculate vmalloc_min
Rather than storing the minimum size of the vmalloc area, store the
maximum permitted address of the vmalloc area instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/mmu.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 285894171186..6a08087ab022 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -668,7 +668,7 @@ void __init iotable_init(struct map_desc *io_desc, int nr) create_mapping(io_desc + i); } -static unsigned long __initdata vmalloc_reserve = SZ_128M; +static void * __initdata vmalloc_min = (void *)(VMALLOC_END - SZ_128M); /* * vmalloc=size forces the vmalloc area to be exactly 'size' @@ -677,7 +677,7 @@ static unsigned long __initdata vmalloc_reserve = SZ_128M; */ static int __init early_vmalloc(char *arg) { - vmalloc_reserve = memparse(arg, NULL); + unsigned long vmalloc_reserve = memparse(arg, NULL); if (vmalloc_reserve < SZ_16M) { vmalloc_reserve = SZ_16M; @@ -692,12 +692,12 @@ static int __init early_vmalloc(char *arg) "vmalloc area is too big, limiting to %luMB\n", vmalloc_reserve >> 20); } + + vmalloc_min = (void *)(VMALLOC_END - vmalloc_reserve); return 0; } early_param("vmalloc", early_vmalloc); -#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve) - static void __init sanity_check_meminfo(void) { int i, j, highmem = 0; @@ -707,7 +707,7 @@ static void __init sanity_check_meminfo(void) *bank = meminfo.bank[i]; #ifdef CONFIG_HIGHMEM - if (__va(bank->start) > VMALLOC_MIN || + if (__va(bank->start) > vmalloc_min || __va(bank->start) < (void *)PAGE_OFFSET) highmem = 1; @@ -717,8 +717,8 @@ static void __init sanity_check_meminfo(void) * Split those memory banks which are partially overlapping * the vmalloc area greatly simplifying things later. */ - if (__va(bank->start) < VMALLOC_MIN && - bank->size > VMALLOC_MIN - __va(bank->start)) { + if (__va(bank->start) < vmalloc_min && + bank->size > vmalloc_min - __va(bank->start)) { if (meminfo.nr_banks >= NR_BANKS) { printk(KERN_CRIT "NR_BANKS too low, " "ignoring high memory\n"); @@ -727,12 +727,12 @@ static void __init sanity_check_meminfo(void) (meminfo.nr_banks - i) * sizeof(*bank)); meminfo.nr_banks++; i++; - bank[1].size -= VMALLOC_MIN - __va(bank->start); - bank[1].start = __pa(VMALLOC_MIN - 1) + 1; + bank[1].size -= vmalloc_min - __va(bank->start); + bank[1].start = __pa(vmalloc_min - 1) + 1; bank[1].highmem = highmem = 1; j++; } - bank->size = VMALLOC_MIN - __va(bank->start); + bank->size = vmalloc_min - __va(bank->start); } #else bank->highmem = highmem; @@ -741,7 +741,7 @@ static void __init sanity_check_meminfo(void) * Check whether this memory bank would entirely overlap * the vmalloc area. */ - if (__va(bank->start) >= VMALLOC_MIN || + if (__va(bank->start) >= vmalloc_min || __va(bank->start) < (void *)PAGE_OFFSET) { printk(KERN_NOTICE "Ignoring RAM at %.8lx-%.8lx " "(vmalloc region overlap).\n", @@ -753,9 +753,9 @@ static void __init sanity_check_meminfo(void) * Check whether this memory bank would partially overlap * the vmalloc area. */ - if (__va(bank->start + bank->size) > VMALLOC_MIN || + if (__va(bank->start + bank->size) > vmalloc_min || __va(bank->start + bank->size) < __va(bank->start)) { - unsigned long newsize = VMALLOC_MIN - __va(bank->start); + unsigned long newsize = vmalloc_min - __va(bank->start); printk(KERN_NOTICE "Truncating RAM at %.8lx-%.8lx " "to -%.8lx (vmalloc region overlap).\n", bank->start, bank->start + bank->size - 1, |