diff options
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/e820.c | 54 | ||||
| -rw-r--r-- | arch/x86_64/mm/numa.c | 8 |
2 files changed, 25 insertions, 37 deletions
diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c index 2570643ba1c..62e051bab3b 100644 --- a/arch/x86_64/kernel/e820.c +++ b/arch/x86_64/kernel/e820.c @@ -194,37 +194,6 @@ unsigned long __init e820_end_of_ram(void) } /* - * Find the hole size in the range. - */ -unsigned long __init e820_hole_size(unsigned long start, unsigned long end) -{ - unsigned long ram = 0; - int i; - - for (i = 0; i < e820.nr_map; i++) { - struct e820entry *ei = &e820.map[i]; - unsigned long last, addr; - - if (ei->type != E820_RAM || - ei->addr+ei->size <= start || - ei->addr >= end) - continue; - - addr = round_up(ei->addr, PAGE_SIZE); - if (addr < start) - addr = start; - - last = round_down(ei->addr + ei->size, PAGE_SIZE); - if (last >= end) - last = end; - - if (last > addr) - ram += last - addr; - } - return ((end - start) - ram); -} - -/* * Mark e820 reserved areas as busy for the resource manager. */ void __init e820_reserve_resources(void) @@ -364,6 +333,29 @@ void __init add_memory_region(unsigned long start, unsigned long size, int type) e820.nr_map++; } +/* + * Find the hole size (in bytes) in the memory range. + * @start: starting address of the memory range to scan + * @end: ending address of the memory range to scan + */ +unsigned long __init e820_hole_size(unsigned long start, unsigned long end) +{ + unsigned long start_pfn = start >> PAGE_SHIFT; + unsigned long end_pfn = end >> PAGE_SHIFT; + unsigned long ei_startpfn; + unsigned long ei_endpfn; + unsigned long ram = 0; + int i; + + for (i = 0; i < e820.nr_map; i++) { + if (e820_find_active_region(&e820.map[i], + start_pfn, end_pfn, + &ei_startpfn, &ei_endpfn)) + ram += ei_endpfn - ei_startpfn; + } + return end - start - (ram << PAGE_SHIFT); +} + void __init e820_print_map(char *who) { int i; diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c index 30bf8043984..0191b1ca6aa 100644 --- a/arch/x86_64/mm/numa.c +++ b/arch/x86_64/mm/numa.c @@ -273,9 +273,6 @@ void __init numa_init_array(void) #ifdef CONFIG_NUMA_EMU /* Numa emulation */ -#define E820_ADDR_HOLE_SIZE(start, end) \ - (e820_hole_size((start) >> PAGE_SHIFT, (end) >> PAGE_SHIFT) << \ - PAGE_SHIFT) char *cmdline __initdata; /* @@ -319,7 +316,7 @@ static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, return -1; if (num_nodes > MAX_NUMNODES) num_nodes = MAX_NUMNODES; - size = (max_addr - *addr - E820_ADDR_HOLE_SIZE(*addr, max_addr)) / + size = (max_addr - *addr - e820_hole_size(*addr, max_addr)) / num_nodes; /* * Calculate the number of big nodes that can be allocated as a result @@ -347,7 +344,7 @@ static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, if (i == num_nodes + node_start - 1) end = max_addr; else - while (end - *addr - E820_ADDR_HOLE_SIZE(*addr, end) < + while (end - *addr - e820_hole_size(*addr, end) < size) { end += FAKE_NODE_MIN_SIZE; if (end > max_addr) { @@ -488,7 +485,6 @@ out: numa_init_array(); return 0; } -#undef E820_ADDR_HOLE_SIZE #endif /* CONFIG_NUMA_EMU */ void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn) |