diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 13 | ||||
| -rw-r--r-- | arch/x86/include/asm/e820.h | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/e820.c | 159 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/numa_64.c | 20 |
6 files changed, 186 insertions, 18 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index eb4092568f9e..95439843cebc 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -568,6 +568,19 @@ config PARAVIRT_DEBUG Enable to debug paravirt_ops internals. Specifically, BUG if a paravirt_op is missing when it is called. +config NO_BOOTMEM + default y + bool "Disable Bootmem code" + depends on X86_64 + ---help--- + Use early_res directly instead of bootmem before slab is ready. + - allocator (buddy) [generic] + - early allocator (bootmem) [generic] + - very early allocator (reserve_early*()) [x86] + - very very early allocator (early brk model) [x86] + So reduce one layer between early allocator to final allocator + + config MEMTEST bool "Memtest" ---help--- diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h index 761249e396fe..7d72e5fb7008 100644 --- a/arch/x86/include/asm/e820.h +++ b/arch/x86/include/asm/e820.h @@ -117,6 +117,12 @@ extern void free_early(u64 start, u64 end); extern void early_res_to_bootmem(u64 start, u64 end); extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align); +void reserve_early_without_check(u64 start, u64 end, char *name); +u64 find_early_area(u64 ei_start, u64 ei_last, u64 start, u64 end, + u64 size, u64 align); +#include <linux/range.h> +int get_free_all_memory_range(struct range **rangep, int nodeid); + extern unsigned long e820_end_of_ram_pfn(void); extern unsigned long e820_end_of_low_ram_pfn(void); extern int e820_find_active_region(const struct e820entry *ei, diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index e09c18c8f3c1..90a85295f332 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -977,6 +977,25 @@ void __init reserve_early(u64 start, u64 end, char *name) __reserve_early(start, end, name, 0); } +void __init reserve_early_without_check(u64 start, u64 end, char *name) +{ + struct early_res *r; + + if (start >= end) + return; + + __check_and_double_early_res(end); + + r = &early_res[early_res_count]; + + r->start = start; + r->end = end; + r->overlap_ok = 0; + if (name) + strncpy(r->name, name, sizeof(r->name) - 1); + early_res_count++; +} + void __init free_early(u64 start, u64 end) { struct early_res *r; @@ -991,6 +1010,94 @@ void __init free_early(u64 start, u64 end) drop_range(i); } +#ifdef CONFIG_NO_BOOTMEM +static void __init subtract_early_res(struct range *range, int az) +{ + int i, count; + u64 final_start, final_end; + int idx = 0; + + count = 0; + for (i = 0; i < max_early_res && early_res[i].end; i++) + count++; + + /* need to skip first one ?*/ + if (early_res != early_res_x) + idx = 1; + +#if 1 + printk(KERN_INFO "Subtract (%d early reservations)\n", count); +#endif + for (i = idx; i < count; i++) { + struct early_res *r = &early_res[i]; +#if 0 + printk(KERN_INFO " #%d [%010llx - %010llx] %15s", i, + r->start, r->end, r->name); +#endif + final_start = PFN_DOWN(r->start); + final_end = PFN_UP(r->end); + if (final_start >= final_end) { +#if 0 + printk(KERN_CONT "\n"); +#endif + continue; + } +#if 0 + printk(KERN_CONT " subtract pfn [%010llx - %010llx]\n", + final_start, final_end); +#endif + subtract_range(range, az, final_start, final_end); + } + +} + +int __init get_free_all_memory_range(struct range **rangep, int nodeid) +{ + int i, count; + u64 start = 0, end; + u64 size; + u64 mem; + struct range *range; + int nr_range; + + count = 0; + for (i = 0; i < max_early_res && early_res[i].end; i++) + count++; + + count *= 2; + + size = sizeof(struct range) * count; +#ifdef MAX_DMA32_PFN + if (max_pfn_mapped > MAX_DMA32_PFN) + start = MAX_DMA32_PFN << PAGE_SHIFT; +#endif + end = max_pfn_mapped << PAGE_SHIFT; + mem = find_e820_area(start, end, size, sizeof(struct range)); + if (mem == -1ULL) + panic("can not find more space for range free"); + + range = __va(mem); + /* use early_node_map[] and early_res to get range array at first */ + memset(range, 0, size); + nr_range = 0; + + /* need to go over early_node_map to find out good range for node */ + nr_range = add_from_early_node_map(range, count, nr_range, nodeid); + subtract_early_res(range, count); + nr_range = clean_sort_range(range, count); + + /* need to clear it ? */ + if (nodeid == MAX_NUMNODES) { + memset(&early_res[0], 0, + sizeof(struct early_res) * max_early_res); + early_res = NULL; + max_early_res = 0; + } + + *rangep = range; + return nr_range; +} +#else void __init early_res_to_bootmem(u64 start, u64 end) { int i, count; @@ -1028,6 +1135,7 @@ void __init early_res_to_bootmem(u64 start, u64 end) max_early_res = 0; early_res_count = 0; } +#endif /* Check for already reserved areas */ static inline int __init bad_addr(u64 *addrp, u64 size, u64 align) @@ -1083,6 +1191,35 @@ again: /* * Find a free area with specified alignment in a specific range. + * only with the area.between start to end is active range from early_node_map + * so they are good as RAM + */ +u64 __init find_early_area(u64 ei_start, u64 ei_last, u64 start, u64 end, + u64 size, u64 align) +{ + u64 addr, last; + + addr = round_up(ei_start, align); + if (addr < start) + addr = round_up(start, align); + if (addr >= ei_last) + goto out; + while (bad_addr(&addr, size, align) && addr+size <= ei_last) + ; + last = addr + size; + if (last > ei_last) + goto out; + if (last > end) + goto out; + + return addr; + +out: + return -1ULL; +} + +/* + * Find a free area with specified alignment in a specific range. */ u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align) { @@ -1090,24 +1227,20 @@ u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align) for (i = 0; i < e820.nr_map; i++) { struct e820entry *ei = &e820.map[i]; - u64 addr, last; - u64 ei_last; + u64 addr; + u64 ei_start, ei_last; if (ei->type != E820_RAM) continue; - addr = round_up(ei->addr, align); + ei_last = ei->addr + ei->size; - if (addr < start) - addr = round_up(start, align); - if (addr >= ei_last) - continue; - while (bad_addr(&addr, size, align) && addr+size <= ei_last) - ; - last = addr + size; - if (last > ei_last) - continue; - if (last > end) + ei_start = ei->addr; + addr = find_early_area(ei_start, ei_last, start, end, + size, align); + + if (addr == -1ULL) continue; + return addr; } return -1ULL; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index ea4141b48518..d49e168bda8c 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -967,7 +967,9 @@ void __init setup_arch(char **cmdline_p) #endif initmem_init(0, max_pfn, acpi, k8); +#ifndef CONFIG_NO_BOOTMEM early_res_to_bootmem(0, max_low_pfn<<PAGE_SHIFT); +#endif dma32_reserve_bootmem(); diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index a15abaae5ba4..53158b7e5d46 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -572,6 +572,7 @@ kernel_physical_mapping_init(unsigned long start, void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, int acpi, int k8) { +#ifndef CONFIG_NO_BOOTMEM unsigned long bootmap_size, bootmap; bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT; @@ -585,6 +586,9 @@ void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn, 0, end_pfn); e820_register_active_regions(0, start_pfn, end_pfn); free_bootmem_with_active_regions(0, end_pfn); +#else + e820_register_active_regions(0, start_pfn, end_pfn); +#endif } #endif diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 02f13cb99bc2..a20e17059afd 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -198,11 +198,13 @@ static void * __init early_node_mem(int nodeid, unsigned long start, void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long end) { - unsigned long start_pfn, last_pfn, bootmap_pages, bootmap_size; + unsigned long start_pfn, last_pfn, nodedata_phys; const int pgdat_size = roundup(sizeof(pg_data_t), PAGE_SIZE); - unsigned long bootmap_start, nodedata_phys; - void *bootmap; int nid; +#ifndef CONFIG_NO_BOOTMEM + unsigned long bootmap_start, bootmap_pages, bootmap_size; + void *bootmap; +#endif if (!end) return; @@ -216,7 +218,7 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end) start = roundup(start, ZONE_ALIGN); - printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid, + printk(KERN_INFO "Initmem setup node %d %016lx-%016lx\n", nodeid, start, end); start_pfn = start >> PAGE_SHIFT; @@ -235,10 +237,13 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end) printk(KERN_INFO " NODE_DATA(%d) on node %d\n", nodeid, nid); memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t)); - NODE_DATA(nodeid)->bdata = &bootmem_node_data[nodeid]; + NODE_DATA(nodeid)->node_id = nodeid; NODE_DATA(nodeid)->node_start_pfn = start_pfn; NODE_DATA(nodeid)->node_spanned_pages = last_pfn - start_pfn; +#ifndef CONFIG_NO_BOOTMEM + NODE_DATA(nodeid)->bdata = &bootmem_node_data[nodeid]; + /* * Find a place for the bootmem map * nodedata_phys could be on other nodes by alloc_bootmem, @@ -275,6 +280,7 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end) printk(KERN_INFO " bootmap(%d) on node %d\n", nodeid, nid); free_bootmem_with_active_regions(nodeid, end); +#endif node_set_online(nodeid); } @@ -733,6 +739,10 @@ unsigned long __init numa_free_all_bootmem(void) for_each_online_node(i) pages += free_all_bootmem_node(NODE_DATA(i)); +#ifdef CONFIG_NO_BOOTMEM + pages += free_all_memory_core_early(MAX_NUMNODES); +#endif + return pages; } |