diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Makefile | 2 | ||||
| -rw-r--r-- | mm/bootmem.c | 39 | ||||
| -rw-r--r-- | mm/mempolicy.c | 2 | ||||
| -rw-r--r-- | mm/mmzone.c | 50 | ||||
| -rw-r--r-- | mm/page_alloc.c | 56 | ||||
| -rw-r--r-- | mm/slab.c | 4 | ||||
| -rw-r--r-- | mm/swap.c | 2 | ||||
| -rw-r--r-- | mm/vmscan.c | 6 |
8 files changed, 135 insertions, 26 deletions
diff --git a/mm/Makefile b/mm/Makefile index f10c753dce6d..0b8f73f2ed16 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -10,7 +10,7 @@ mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \ obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \ page_alloc.o page-writeback.o pdflush.o \ readahead.o swap.o truncate.o vmscan.o \ - prio_tree.o util.o $(mmu-y) + prio_tree.o util.o mmzone.o $(mmu-y) obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o thrash.o obj-$(CONFIG_HUGETLBFS) += hugetlb.o diff --git a/mm/bootmem.c b/mm/bootmem.c index b55bd39fc5dd..d3e3bd2ffcea 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -33,6 +33,7 @@ EXPORT_SYMBOL(max_pfn); /* This is exported so * dma_get_required_mask(), which uses * it, can be an inline function */ +static LIST_HEAD(bdata_list); #ifdef CONFIG_CRASH_DUMP /* * If we have booted due to a crash, max_pfn will be a very low value. We need @@ -52,6 +53,27 @@ unsigned long __init bootmem_bootmap_pages (unsigned long pages) return mapsize; } +/* + * link bdata in order + */ +static void link_bootmem(bootmem_data_t *bdata) +{ + bootmem_data_t *ent; + if (list_empty(&bdata_list)) { + list_add(&bdata->list, &bdata_list); + return; + } + /* insert in order */ + list_for_each_entry(ent, &bdata_list, list) { + if (bdata->node_boot_start < ent->node_boot_start) { + list_add_tail(&bdata->list, &ent->list); + return; + } + } + list_add_tail(&bdata->list, &bdata_list); + return; +} + /* * Called once to set up the allocator itself. @@ -62,13 +84,11 @@ static unsigned long __init init_bootmem_core (pg_data_t *pgdat, bootmem_data_t *bdata = pgdat->bdata; unsigned long mapsize = ((end - start)+7)/8; - pgdat->pgdat_next = pgdat_list; - pgdat_list = pgdat; - mapsize = ALIGN(mapsize, sizeof(long)); bdata->node_bootmem_map = phys_to_virt(mapstart << PAGE_SHIFT); bdata->node_boot_start = (start << PAGE_SHIFT); bdata->node_low_pfn = end; + link_bootmem(bdata); /* * Initially all pages are reserved - setup_arch() has to @@ -383,12 +403,11 @@ unsigned long __init free_all_bootmem (void) void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal) { - pg_data_t *pgdat = pgdat_list; + bootmem_data_t *bdata; void *ptr; - for_each_pgdat(pgdat) - if ((ptr = __alloc_bootmem_core(pgdat->bdata, size, - align, goal, 0))) + list_for_each_entry(bdata, &bdata_list, list) + if ((ptr = __alloc_bootmem_core(bdata, size, align, goal, 0))) return(ptr); /* @@ -416,11 +435,11 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, unsigne void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal) { - pg_data_t *pgdat = pgdat_list; + bootmem_data_t *bdata; void *ptr; - for_each_pgdat(pgdat) - if ((ptr = __alloc_bootmem_core(pgdat->bdata, size, + list_for_each_entry(bdata, &bdata_list, list) + if ((ptr = __alloc_bootmem_core(bdata, size, align, goal, LOW32LIMIT))) return(ptr); diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 4f71cfd29c6f..dec8249e972d 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -912,7 +912,7 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, /* * Check if this process has the right to modify the specified * process. The right exists if the process has administrative - * capabilities, superuser priviledges or the same + * capabilities, superuser privileges or the same * userid as the target process. */ if ((current->euid != task->suid) && (current->euid != task->uid) && diff --git a/mm/mmzone.c b/mm/mmzone.c new file mode 100644 index 000000000000..b022370e612e --- /dev/null +++ b/mm/mmzone.c @@ -0,0 +1,50 @@ +/* + * linux/mm/mmzone.c + * + * management codes for pgdats and zones. + */ + + +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/mmzone.h> +#include <linux/module.h> + +struct pglist_data *first_online_pgdat(void) +{ + return NODE_DATA(first_online_node); +} + +EXPORT_SYMBOL(first_online_pgdat); + +struct pglist_data *next_online_pgdat(struct pglist_data *pgdat) +{ + int nid = next_online_node(pgdat->node_id); + + if (nid == MAX_NUMNODES) + return NULL; + return NODE_DATA(nid); +} +EXPORT_SYMBOL(next_online_pgdat); + + +/* + * next_zone - helper magic for for_each_zone() + */ +struct zone *next_zone(struct zone *zone) +{ + pg_data_t *pgdat = zone->zone_pgdat; + + if (zone < pgdat->node_zones + MAX_NR_ZONES - 1) + zone++; + else { + pgdat = next_online_pgdat(pgdat); + if (pgdat) + zone = pgdat->node_zones; + else + zone = NULL; + } + return zone; +} +EXPORT_SYMBOL(next_zone); + diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 338a02bb004d..dc523a1f270d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -49,7 +49,6 @@ nodemask_t node_online_map __read_mostly = { { [0] = 1UL } }; EXPORT_SYMBOL(node_online_map); nodemask_t node_possible_map __read_mostly = NODE_MASK_ALL; EXPORT_SYMBOL(node_possible_map); -struct pglist_data *pgdat_list __read_mostly; unsigned long totalram_pages __read_mostly; unsigned long totalhigh_pages __read_mostly; long nr_swap_pages; @@ -1201,7 +1200,7 @@ unsigned int nr_free_highpages (void) pg_data_t *pgdat; unsigned int pages = 0; - for_each_pgdat(pgdat) + for_each_online_pgdat(pgdat) pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages; return pages; @@ -1343,7 +1342,7 @@ void get_zone_counts(unsigned long *active, *active = 0; *inactive = 0; *free = 0; - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { unsigned long l, m, n; __get_zone_counts(&l, &m, &n, pgdat); *active += l; @@ -2042,7 +2041,6 @@ static __meminit void init_currently_empty_zone(struct zone *zone, zone_wait_table_init(zone, size); pgdat->nr_zones = zone_idx(zone) + 1; - zone->zone_mem_map = pfn_to_page(zone_start_pfn); zone->zone_start_pfn = zone_start_pfn; memmap_init(size, pgdat->node_id, zone_idx(zone), zone_start_pfn); @@ -2170,8 +2168,9 @@ static void *frag_start(struct seq_file *m, loff_t *pos) { pg_data_t *pgdat; loff_t node = *pos; - - for (pgdat = pgdat_list; pgdat && node; pgdat = pgdat->pgdat_next) + for (pgdat = first_online_pgdat(); + pgdat && node; + pgdat = next_online_pgdat(pgdat)) --node; return pgdat; @@ -2182,7 +2181,7 @@ static void *frag_next(struct seq_file *m, void *arg, loff_t *pos) pg_data_t *pgdat = (pg_data_t *)arg; (*pos)++; - return pgdat->pgdat_next; + return next_online_pgdat(pgdat); } static void frag_stop(struct seq_file *m, void *arg) @@ -2483,7 +2482,7 @@ static void setup_per_zone_lowmem_reserve(void) struct pglist_data *pgdat; int j, idx; - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { for (j = 0; j < MAX_NR_ZONES; j++) { struct zone *zone = pgdat->node_zones + j; unsigned long present_pages = zone->present_pages; @@ -2745,3 +2744,44 @@ void *__init alloc_large_system_hash(const char *tablename, return table; } + +#ifdef CONFIG_OUT_OF_LINE_PFN_TO_PAGE +/* + * pfn <-> page translation. out-of-line version. + * (see asm-generic/memory_model.h) + */ +#if defined(CONFIG_FLATMEM) +struct page *pfn_to_page(unsigned long pfn) +{ + return mem_map + (pfn - ARCH_PFN_OFFSET); +} +unsigned long page_to_pfn(struct page *page) +{ + return (page - mem_map) + ARCH_PFN_OFFSET; +} +#elif defined(CONFIG_DISCONTIGMEM) +struct page *pfn_to_page(unsigned long pfn) +{ + int nid = arch_pfn_to_nid(pfn); + return NODE_DATA(nid)->node_mem_map + arch_local_page_offset(pfn,nid); +} +unsigned long page_to_pfn(struct page *page) +{ + struct pglist_data *pgdat = NODE_DATA(page_to_nid(page)); + return (page - pgdat->node_mem_map) + pgdat->node_start_pfn; +} +#elif defined(CONFIG_SPARSEMEM) +struct page *pfn_to_page(unsigned long pfn) +{ + return __section_mem_map_addr(__pfn_to_section(pfn)) + pfn; +} + +unsigned long page_to_pfn(struct page *page) +{ + long section_id = page_to_section(page); + return page - __section_mem_map_addr(__nr_to_section(section_id)); +} +#endif /* CONFIG_FLATMEM/DISCONTIGMME/SPARSEMEM */ +EXPORT_SYMBOL(pfn_to_page); +EXPORT_SYMBOL(page_to_pfn); +#endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */ diff --git a/mm/slab.c b/mm/slab.c index 681837499d7d..4cbf8bb13557 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3311,7 +3311,7 @@ void *__alloc_percpu(size_t size) * and we have no way of figuring out how to fix the array * that we have allocated then.... */ - for_each_cpu(i) { + for_each_possible_cpu(i) { int node = cpu_to_node(i); if (node_online(node)) @@ -3398,7 +3398,7 @@ void free_percpu(const void *objp) /* * We allocate for all cpus so we cannot use for online cpu here. */ - for_each_cpu(i) + for_each_possible_cpu(i) kfree(p->ptrs[i]); kfree(p); } diff --git a/mm/swap.c b/mm/swap.c index 91b7e2026f69..88895c249bc9 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -512,7 +512,7 @@ long percpu_counter_sum(struct percpu_counter *fbc) spin_lock(&fbc->lock); ret = fbc->count; - for_each_cpu(cpu) { + for_each_possible_cpu(cpu) { long *pcount = per_cpu_ptr(fbc->counters, cpu); ret += *pcount; } diff --git a/mm/vmscan.c b/mm/vmscan.c index 78865c849f8f..acdf001d6941 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1305,7 +1305,7 @@ unsigned long shrink_all_memory(unsigned long nr_pages) current->reclaim_state = &reclaim_state; repeat: - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { unsigned long freed; freed = balance_pgdat(pgdat, nr_to_free, 0); @@ -1335,7 +1335,7 @@ static int __devinit cpu_callback(struct notifier_block *nfb, cpumask_t mask; if (action == CPU_ONLINE) { - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { mask = node_to_cpumask(pgdat->node_id); if (any_online_cpu(mask) != NR_CPUS) /* One of our CPUs online: restore mask */ @@ -1351,7 +1351,7 @@ static int __init kswapd_init(void) pg_data_t *pgdat; swap_setup(); - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { pid_t pid; pid = kernel_thread(kswapd, pgdat, CLONE_KERNEL); |