Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933868Ab0BQBSK (ORCPT ); Tue, 16 Feb 2010 20:18:10 -0500 Received: from hera.kernel.org ([140.211.167.34]:43845 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933841Ab0BQBSH (ORCPT ); Tue, 16 Feb 2010 20:18:07 -0500 Message-ID: <4B7B4378.1070206@kernel.org> Date: Tue, 16 Feb 2010 17:16:40 -0800 From: Yinghai Lu User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091130 SUSE/3.0.0-1.1.1 Thunderbird/3.0 MIME-Version: 1.0 To: "H. Peter Anvin" CC: Stephen Rothwell , Ingo Molnar , Thomas Gleixner , Andrew Morton , Linus Torvalds , Jesse Barnes , Christoph Lameter , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: Re: [PATCH 16/35] x86: make 64 bit use early_res instead of bootmem before slab References: <1265793639-15071-1-git-send-email-yinghai@kernel.org> <1265793639-15071-17-git-send-email-yinghai@kernel.org> <20100215010833.15f9e09a.sfr@canb.auug.org.au> In-Reply-To: <20100215010833.15f9e09a.sfr@canb.auug.org.au> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 27607 Lines: 989 On 02/14/2010 06:08 AM, Stephen Rothwell wrote: > Hi, > > On Wed, 10 Feb 2010 01:20:20 -0800 Yinghai Lu wrote: >> >> finally we can use early_res to replace bootmem for x86_64 now. >> >> still can use CONFIG_NO_BOOTMEM to enable it or not >> >> -v2: fix 32bit compiling about MAX_DMA32_PFN >> >> Signed-off-by: Yinghai Lu > > From a powerpc pseries_defconfig build (and others configs) of tip/master > (9d4a5dc3080c811f36bf8175f2de1f9a6f84b176 "Merge branch 'perf/urgent'"): > > mm/page_alloc.c:3468: error: implicit declaration of function 'find_early_area' > mm/page_alloc.c:3483: error: implicit declaration of function 'reserve_early_without_check' > please use this one to replace that in tip/x86/bootmem Thanks Yinghai Subject: [PATCH -v3 16/35] x86: make 64 bit use early_res instead of bootmem before slab finally we can use early_res to replace bootmem for x86_64 now. still can use CONFIG_NO_BOOTMEM to enable it or not -v2: fix 32bit compiling about MAX_DMA32_PFN -v3: fix PPC compiling | mm/page_alloc.c:3468: error: implicit declaration of function 'find_early_area' | mm/page_alloc.c:3483: error: implicit declaration of function 'reserve_early_without_check' | actually the function is only needed for no_bootmem Signed-off-by: Yinghai Lu --- arch/x86/Kconfig | 13 ++ arch/x86/include/asm/e820.h | 6 + arch/x86/kernel/e820.c | 159 ++++++++++++++++++++++++++++++++--- arch/x86/kernel/setup.c | 2 arch/x86/mm/init_64.c | 4 arch/x86/mm/numa_64.c | 20 +++- include/linux/bootmem.h | 7 + include/linux/mm.h | 5 + include/linux/mmzone.h | 2 mm/bootmem.c | 195 +++++++++++++++++++++++++++++++++++++++++++- mm/page_alloc.c | 61 +++++++++++++ mm/percpu.c | 3 mm/sparse-vmemmap.c | 2 13 files changed, 456 insertions(+), 23 deletions(-) Index: linux-2.6/arch/x86/Kconfig =================================================================== --- linux-2.6.orig/arch/x86/Kconfig +++ linux-2.6/arch/x86/Kconfig @@ -569,6 +569,19 @@ 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--- Index: linux-2.6/arch/x86/include/asm/e820.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/e820.h +++ linux-2.6/arch/x86/include/asm/e820.h @@ -117,6 +117,12 @@ extern void free_early(u64 start, u64 en 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 +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, Index: linux-2.6/arch/x86/kernel/e820.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/e820.c +++ linux-2.6/arch/x86/kernel/e820.c @@ -977,6 +977,25 @@ void __init reserve_early(u64 start, u64 __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 en 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 sta 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 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; Index: linux-2.6/arch/x86/kernel/setup.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/setup.c +++ linux-2.6/arch/x86/kernel/setup.c @@ -965,7 +965,9 @@ 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; @@ -235,10 +237,13 @@ setup_node_bootmem(int nodeid, unsigned 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 printk(KERN_INFO " bootmap(%d) on node %d\n", nodeid, nid); free_bootmem_with_active_regions(nodeid, end); +#endif node_set_online(nodeid); } @@ -700,6 +706,10 @@ unsigned long __init numa_free_all_bootm 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; } Index: linux-2.6/include/linux/bootmem.h =================================================================== --- linux-2.6.orig/include/linux/bootmem.h +++ linux-2.6/include/linux/bootmem.h @@ -23,6 +23,7 @@ extern unsigned long max_pfn; extern unsigned long saved_max_pfn; #endif +#ifndef CONFIG_NO_BOOTMEM /* * node_bootmem_map is a map pointer - the bits represent all physical * memory pages (including holes) on the node. @@ -37,6 +38,7 @@ typedef struct bootmem_data { } bootmem_data_t; extern bootmem_data_t bootmem_node_data[]; +#endif extern unsigned long bootmem_bootmap_pages(unsigned long); @@ -46,6 +48,7 @@ extern unsigned long init_bootmem_node(p unsigned long endpfn); extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); +unsigned long free_all_memory_core_early(int nodeid); extern unsigned long free_all_bootmem_node(pg_data_t *pgdat); extern unsigned long free_all_bootmem(void); @@ -84,6 +87,10 @@ extern void *__alloc_bootmem_node(pg_dat unsigned long size, unsigned long align, unsigned long goal); +void *__alloc_bootmem_node_high(pg_data_t *pgdat, + unsigned long size, + unsigned long align, + unsigned long goal); extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size, unsigned long align, Index: linux-2.6/include/linux/mm.h =================================================================== --- linux-2.6.orig/include/linux/mm.h +++ linux-2.6/include/linux/mm.h @@ -12,6 +12,7 @@ #include #include #include +#include struct mempolicy; struct anon_vma; @@ -1049,6 +1050,10 @@ extern void get_pfn_range_for_nid(unsign extern unsigned long find_min_pfn_with_active_regions(void); extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); +int add_from_early_node_map(struct range *range, int az, + int nr_range, int nid); +void *__alloc_memory_core_early(int nodeid, u64 size, u64 align, + u64 goal, u64 limit); typedef int (*work_fn_t)(unsigned long, unsigned long, void *); extern void work_with_active_regions(int nid, work_fn_t work_fn, void *data); extern void sparse_memory_present_with_active_regions(int nid); Index: linux-2.6/include/linux/mmzone.h =================================================================== --- linux-2.6.orig/include/linux/mmzone.h +++ linux-2.6/include/linux/mmzone.h @@ -620,7 +620,9 @@ typedef struct pglist_data { struct page_cgroup *node_page_cgroup; #endif #endif +#ifndef CONFIG_NO_BOOTMEM struct bootmem_data *bdata; +#endif #ifdef CONFIG_MEMORY_HOTPLUG /* * Must be held any time you expect node_start_pfn, node_present_pages Index: linux-2.6/mm/bootmem.c =================================================================== --- linux-2.6.orig/mm/bootmem.c +++ linux-2.6/mm/bootmem.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -32,6 +33,7 @@ unsigned long max_pfn; unsigned long saved_max_pfn; #endif +#ifndef CONFIG_NO_BOOTMEM bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initdata; static struct list_head bdata_list __initdata = LIST_HEAD_INIT(bdata_list); @@ -142,7 +144,7 @@ unsigned long __init init_bootmem(unsign min_low_pfn = start; return init_bootmem_core(NODE_DATA(0)->bdata, start, 0, pages); } - +#endif /* * free_bootmem_late - free bootmem pages directly to page allocator * @addr: starting address of the range @@ -167,6 +169,60 @@ void __init free_bootmem_late(unsigned l } } +#ifdef CONFIG_NO_BOOTMEM +static void __init __free_pages_memory(unsigned long start, unsigned long end) +{ + int i; + unsigned long start_aligned, end_aligned; + int order = ilog2(BITS_PER_LONG); + + start_aligned = (start + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1); + end_aligned = end & ~(BITS_PER_LONG - 1); + + if (end_aligned <= start_aligned) { +#if 1 + printk(KERN_DEBUG " %lx - %lx\n", start, end); +#endif + for (i = start; i < end; i++) + __free_pages_bootmem(pfn_to_page(i), 0); + + return; + } + +#if 1 + printk(KERN_DEBUG " %lx %lx - %lx %lx\n", + start, start_aligned, end_aligned, end); +#endif + for (i = start; i < start_aligned; i++) + __free_pages_bootmem(pfn_to_page(i), 0); + + for (i = start_aligned; i < end_aligned; i += BITS_PER_LONG) + __free_pages_bootmem(pfn_to_page(i), order); + + for (i = end_aligned; i < end; i++) + __free_pages_bootmem(pfn_to_page(i), 0); +} + +unsigned long __init free_all_memory_core_early(int nodeid) +{ + int i; + u64 start, end; + unsigned long count = 0; + struct range *range = NULL; + int nr_range; + + nr_range = get_free_all_memory_range(&range, nodeid); + + for (i = 0; i < nr_range; i++) { + start = range[i].start; + end = range[i].end; + count += end - start; + __free_pages_memory(start, end); + } + + return count; +} +#else static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata) { int aligned; @@ -228,6 +284,7 @@ static unsigned long __init free_all_boo return count; } +#endif /** * free_all_bootmem_node - release a node's free pages to the buddy allocator @@ -238,7 +295,12 @@ static unsigned long __init free_all_boo unsigned long __init free_all_bootmem_node(pg_data_t *pgdat) { register_page_bootmem_info_node(pgdat); +#ifdef CONFIG_NO_BOOTMEM + /* free_all_memory_core_early(MAX_NUMNODES) will be called later */ + return 0; +#else return free_all_bootmem_core(pgdat->bdata); +#endif } /** @@ -248,9 +310,14 @@ unsigned long __init free_all_bootmem_no */ unsigned long __init free_all_bootmem(void) { +#ifdef CONFIG_NO_BOOTMEM + return free_all_memory_core_early(NODE_DATA(0)->node_id); +#else return free_all_bootmem_core(NODE_DATA(0)->bdata); +#endif } +#ifndef CONFIG_NO_BOOTMEM static void __init __free(bootmem_data_t *bdata, unsigned long sidx, unsigned long eidx) { @@ -345,6 +412,7 @@ static int __init mark_bootmem(unsigned } BUG(); } +#endif /** * free_bootmem_node - mark a page range as usable @@ -359,6 +427,12 @@ static int __init mark_bootmem(unsigned void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, unsigned long size) { +#ifdef CONFIG_NO_BOOTMEM + free_early(physaddr, physaddr + size); +#if 0 + printk(KERN_DEBUG "free %lx %lx\n", physaddr, size); +#endif +#else unsigned long start, end; kmemleak_free_part(__va(physaddr), size); @@ -367,6 +441,7 @@ void __init free_bootmem_node(pg_data_t end = PFN_DOWN(physaddr + size); mark_bootmem_node(pgdat->bdata, start, end, 0, 0); +#endif } /** @@ -380,6 +455,12 @@ void __init free_bootmem_node(pg_data_t */ void __init free_bootmem(unsigned long addr, unsigned long size) { +#ifdef CONFIG_NO_BOOTMEM + free_early(addr, addr + size); +#if 0 + printk(KERN_DEBUG "free %lx %lx\n", addr, size); +#endif +#else unsigned long start, end; kmemleak_free_part(__va(addr), size); @@ -388,6 +469,7 @@ void __init free_bootmem(unsigned long a end = PFN_DOWN(addr + size); mark_bootmem(start, end, 0, 0); +#endif } /** @@ -404,12 +486,17 @@ void __init free_bootmem(unsigned long a int __init reserve_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, unsigned long size, int flags) { +#ifdef CONFIG_NO_BOOTMEM + panic("no bootmem"); + return 0; +#else unsigned long start, end; start = PFN_DOWN(physaddr); end = PFN_UP(physaddr + size); return mark_bootmem_node(pgdat->bdata, start, end, 1, flags); +#endif } /** @@ -425,14 +512,20 @@ int __init reserve_bootmem_node(pg_data_ int __init reserve_bootmem(unsigned long addr, unsigned long size, int flags) { +#ifdef CONFIG_NO_BOOTMEM + panic("no bootmem"); + return 0; +#else unsigned long start, end; start = PFN_DOWN(addr); end = PFN_UP(addr + size); return mark_bootmem(start, end, 1, flags); +#endif } +#ifndef CONFIG_NO_BOOTMEM static unsigned long __init align_idx(struct bootmem_data *bdata, unsigned long idx, unsigned long step) { @@ -583,12 +676,33 @@ static void * __init alloc_arch_preferre #endif return NULL; } +#endif static void * __init ___alloc_bootmem_nopanic(unsigned long size, unsigned long align, unsigned long goal, unsigned long limit) { +#ifdef CONFIG_NO_BOOTMEM + void *ptr; + + if (WARN_ON_ONCE(slab_is_available())) + return kzalloc(size, GFP_NOWAIT); + +restart: + + ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align, goal, limit); + + if (ptr) + return ptr; + + if (goal != 0) { + goal = 0; + goto restart; + } + + return NULL; +#else bootmem_data_t *bdata; void *region; @@ -614,6 +728,7 @@ restart: } return NULL; +#endif } /** @@ -632,7 +747,13 @@ restart: void * __init __alloc_bootmem_nopanic(unsigned long size, unsigned long align, unsigned long goal) { - return ___alloc_bootmem_nopanic(size, align, goal, 0); + unsigned long limit = 0; + +#ifdef CONFIG_NO_BOOTMEM + limit = -1UL; +#endif + + return ___alloc_bootmem_nopanic(size, align, goal, limit); } static void * __init ___alloc_bootmem(unsigned long size, unsigned long align, @@ -666,9 +787,16 @@ static void * __init ___alloc_bootmem(un void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal) { - return ___alloc_bootmem(size, align, goal, 0); + unsigned long limit = 0; + +#ifdef CONFIG_NO_BOOTMEM + limit = -1UL; +#endif + + return ___alloc_bootmem(size, align, goal, limit); } +#ifndef CONFIG_NO_BOOTMEM static void * __init ___alloc_bootmem_node(bootmem_data_t *bdata, unsigned long size, unsigned long align, unsigned long goal, unsigned long limit) @@ -685,6 +813,7 @@ static void * __init ___alloc_bootmem_no return ___alloc_bootmem(size, align, goal, limit); } +#endif /** * __alloc_bootmem_node - allocate boot memory from a specific node @@ -707,7 +836,46 @@ void * __init __alloc_bootmem_node(pg_da if (WARN_ON_ONCE(slab_is_available())) return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); +#ifdef CONFIG_NO_BOOTMEM + return __alloc_memory_core_early(pgdat->node_id, size, align, + goal, -1ULL); +#else return ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0); +#endif +} + +void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size, + unsigned long align, unsigned long goal) +{ +#ifdef MAX_DMA32_PFN + unsigned long end_pfn; + + if (WARN_ON_ONCE(slab_is_available())) + return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); + + /* update goal according ...MAX_DMA32_PFN */ + end_pfn = pgdat->node_start_pfn + pgdat->node_spanned_pages; + + if (end_pfn > MAX_DMA32_PFN + (128 >> (20 - PAGE_SHIFT)) && + (goal >> PAGE_SHIFT) < MAX_DMA32_PFN) { + void *ptr; + unsigned long new_goal; + + new_goal = MAX_DMA32_PFN << PAGE_SHIFT; +#ifdef CONFIG_NO_BOOTMEM + ptr = __alloc_memory_core_early(pgdat->node_id, size, align, + new_goal, -1ULL); +#else + ptr = alloc_bootmem_core(pgdat->bdata, size, align, + new_goal, 0); +#endif + if (ptr) + return ptr; + } +#endif + + return __alloc_bootmem_node(pgdat, size, align, goal); + } #ifdef CONFIG_SPARSEMEM @@ -721,6 +889,16 @@ void * __init __alloc_bootmem_node(pg_da void * __init alloc_bootmem_section(unsigned long size, unsigned long section_nr) { +#ifdef CONFIG_NO_BOOTMEM + unsigned long pfn, goal, limit; + + pfn = section_nr_to_pfn(section_nr); + goal = pfn << PAGE_SHIFT; + limit = section_nr_to_pfn(section_nr + 1) << PAGE_SHIFT; + + return __alloc_memory_core_early(early_pfn_to_nid(pfn), size, + SMP_CACHE_BYTES, goal, limit); +#else bootmem_data_t *bdata; unsigned long pfn, goal, limit; @@ -730,6 +908,7 @@ void * __init alloc_bootmem_section(unsi bdata = &bootmem_node_data[early_pfn_to_nid(pfn)]; return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, limit); +#endif } #endif @@ -741,11 +920,16 @@ void * __init __alloc_bootmem_node_nopan if (WARN_ON_ONCE(slab_is_available())) return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); +#ifdef CONFIG_NO_BOOTMEM + ptr = __alloc_memory_core_early(pgdat->node_id, size, align, + goal, -1ULL); +#else ptr = alloc_arch_preferred_bootmem(pgdat->bdata, size, align, goal, 0); if (ptr) return ptr; ptr = alloc_bootmem_core(pgdat->bdata, size, align, goal, 0); +#endif if (ptr) return ptr; @@ -796,6 +980,11 @@ void * __init __alloc_bootmem_low_node(p if (WARN_ON_ONCE(slab_is_available())) return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); +#ifdef CONFIG_NO_BOOTMEM + return __alloc_memory_core_early(pgdat->node_id, size, align, + goal, ARCH_LOW_ADDRESS_LIMIT); +#else return ___alloc_bootmem_node(pgdat->bdata, size, align, goal, ARCH_LOW_ADDRESS_LIMIT); +#endif } Index: linux-2.6/mm/page_alloc.c =================================================================== --- linux-2.6.orig/mm/page_alloc.c +++ linux-2.6/mm/page_alloc.c @@ -3435,6 +3435,61 @@ void __init free_bootmem_with_active_reg } } +int __init add_from_early_node_map(struct range *range, int az, + int nr_range, int nid) +{ + int i; + u64 start, end; + + /* need to go over early_node_map to find out good range for node */ + for_each_active_range_index_in_nid(i, nid) { + start = early_node_map[i].start_pfn; + end = early_node_map[i].end_pfn; + nr_range = add_range(range, az, nr_range, start, end); + } + return nr_range; +} + +#ifdef CONFIG_NO_BOOTMEM +void * __init __alloc_memory_core_early(int nid, u64 size, u64 align, + u64 goal, u64 limit) +{ + int i; + void *ptr; + + /* need to go over early_node_map to find out good range for node */ + for_each_active_range_index_in_nid(i, nid) { + u64 addr; + u64 ei_start, ei_last; + + ei_last = early_node_map[i].end_pfn; + ei_last <<= PAGE_SHIFT; + ei_start = early_node_map[i].start_pfn; + ei_start <<= PAGE_SHIFT; + addr = find_early_area(ei_start, ei_last, + goal, limit, size, align); + + if (addr == -1ULL) + continue; + +#if 0 + printk(KERN_DEBUG "alloc (nid=%d %llx - %llx) (%llx - %llx) %llx %llx => %llx\n", + nid, + ei_start, ei_last, goal, limit, size, + align, addr); +#endif + + ptr = phys_to_virt(addr); + memset(ptr, 0, size); + reserve_early_without_check(addr, addr + size, "BOOTMEM"); + return ptr; + } + + return NULL; +} +#endif + + void __init work_with_active_regions(int nid, work_fn_t work_fn, void *data) { int i; @@ -4467,7 +4522,11 @@ void __init set_dma_reserve(unsigned lon } #ifndef CONFIG_NEED_MULTIPLE_NODES -struct pglist_data __refdata contig_page_data = { .bdata = &bootmem_node_data[0] }; +struct pglist_data __refdata contig_page_data = { +#ifndef CONFIG_NO_BOOTMEM + .bdata = &bootmem_node_data[0] +#endif + }; EXPORT_SYMBOL(contig_page_data); #endif Index: linux-2.6/mm/percpu.c =================================================================== --- linux-2.6.orig/mm/percpu.c +++ linux-2.6/mm/percpu.c @@ -1929,7 +1929,10 @@ int __init pcpu_embed_first_chunk(size_t } /* copy and return the unused part */ memcpy(ptr, __per_cpu_load, ai->static_size); +#ifndef CONFIG_NO_BOOTMEM + /* fix partial free ! */ free_fn(ptr + size_sum, ai->unit_size - size_sum); +#endif } } Index: linux-2.6/mm/sparse-vmemmap.c =================================================================== --- linux-2.6.orig/mm/sparse-vmemmap.c +++ linux-2.6/mm/sparse-vmemmap.c @@ -40,7 +40,7 @@ static void * __init_refok __earlyonly_b unsigned long align, unsigned long goal) { - return __alloc_bootmem_node(NODE_DATA(node), size, align, goal); + return __alloc_bootmem_node_high(NODE_DATA(node), size, align, goal); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/