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author | Ingo Molnar <mingo@elte.hu> | 2008-10-13 11:05:51 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-13 11:05:51 +0200 |
commit | accba5f3965d6a9d1bf7c1e1a7995d17e9d521b6 (patch) | |
tree | 8fb40782e79472ed882ff2098d4dd295557278ee /arch/arm/mm/init.c | |
parent | 6852fd9b86d05063c6ef49d2e12e061cc7f6a105 (diff) | |
parent | 4480f15b3306f43bbb0310d461142b4e897ca45b (diff) | |
download | op-kernel-dev-accba5f3965d6a9d1bf7c1e1a7995d17e9d521b6.zip op-kernel-dev-accba5f3965d6a9d1bf7c1e1a7995d17e9d521b6.tar.gz |
Merge branch 'linus' into oprofile-v2
Conflicts:
arch/x86/kernel/apic_32.c
arch/x86/oprofile/nmi_int.c
include/linux/pci_ids.h
Diffstat (limited to 'arch/arm/mm/init.c')
-rw-r--r-- | arch/arm/mm/init.c | 185 |
1 files changed, 122 insertions, 63 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index e635294..82c4b42 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -26,9 +26,42 @@ #include "mm.h" -extern void _text, _etext, __data_start, _end, __init_begin, __init_end; -extern unsigned long phys_initrd_start; -extern unsigned long phys_initrd_size; +static unsigned long phys_initrd_start __initdata = 0; +static unsigned long phys_initrd_size __initdata = 0; + +static void __init early_initrd(char **p) +{ + unsigned long start, size; + + start = memparse(*p, p); + if (**p == ',') { + size = memparse((*p) + 1, p); + + phys_initrd_start = start; + phys_initrd_size = size; + } +} +__early_param("initrd=", early_initrd); + +static int __init parse_tag_initrd(const struct tag *tag) +{ + printk(KERN_WARNING "ATAG_INITRD is deprecated; " + "please update your bootloader.\n"); + phys_initrd_start = __virt_to_phys(tag->u.initrd.start); + phys_initrd_size = tag->u.initrd.size; + return 0; +} + +__tagtable(ATAG_INITRD, parse_tag_initrd); + +static int __init parse_tag_initrd2(const struct tag *tag) +{ + phys_initrd_start = tag->u.initrd.start; + phys_initrd_size = tag->u.initrd.size; + return 0; +} + +__tagtable(ATAG_INITRD2, parse_tag_initrd2); /* * This is used to pass memory configuration data from paging_init @@ -36,10 +69,6 @@ extern unsigned long phys_initrd_size; */ static struct meminfo meminfo = { 0, }; -#define for_each_nodebank(iter,mi,no) \ - for (iter = 0; iter < mi->nr_banks; iter++) \ - if (mi->bank[iter].node == no) - void show_mem(void) { int free = 0, total = 0, reserved = 0; @@ -50,14 +79,15 @@ void show_mem(void) show_free_areas(); for_each_online_node(node) { pg_data_t *n = NODE_DATA(node); - struct page *map = n->node_mem_map - n->node_start_pfn; + struct page *map = pgdat_page_nr(n, 0) - n->node_start_pfn; for_each_nodebank (i,mi,node) { + struct membank *bank = &mi->bank[i]; unsigned int pfn1, pfn2; struct page *page, *end; - pfn1 = __phys_to_pfn(mi->bank[i].start); - pfn2 = __phys_to_pfn(mi->bank[i].size + mi->bank[i].start); + pfn1 = bank_pfn_start(bank); + pfn2 = bank_pfn_end(bank); page = map + pfn1; end = map + pfn2; @@ -96,17 +126,17 @@ void show_mem(void) static unsigned int __init find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages) { - unsigned int start_pfn, bank, bootmap_pfn; + unsigned int start_pfn, i, bootmap_pfn; start_pfn = PAGE_ALIGN(__pa(&_end)) >> PAGE_SHIFT; bootmap_pfn = 0; - for_each_nodebank(bank, mi, node) { + for_each_nodebank(i, mi, node) { + struct membank *bank = &mi->bank[i]; unsigned int start, end; - start = mi->bank[bank].start >> PAGE_SHIFT; - end = (mi->bank[bank].size + - mi->bank[bank].start) >> PAGE_SHIFT; + start = bank_pfn_start(bank); + end = bank_pfn_end(bank); if (end < start_pfn) continue; @@ -145,20 +175,17 @@ static int __init check_initrd(struct meminfo *mi) initrd_node = -1; for (i = 0; i < mi->nr_banks; i++) { - unsigned long bank_end; - - bank_end = mi->bank[i].start + mi->bank[i].size; - - if (mi->bank[i].start <= phys_initrd_start && - end <= bank_end) - initrd_node = mi->bank[i].node; + struct membank *bank = &mi->bank[i]; + if (bank_phys_start(bank) <= phys_initrd_start && + end <= bank_phys_end(bank)) + initrd_node = bank->node; } } if (initrd_node == -1) { - printk(KERN_ERR "initrd (0x%08lx - 0x%08lx) extends beyond " + printk(KERN_ERR "INITRD: 0x%08lx+0x%08lx extends beyond " "physical memory - disabling initrd\n", - phys_initrd_start, end); + phys_initrd_start, phys_initrd_size); phys_initrd_start = phys_initrd_size = 0; } #endif @@ -171,19 +198,17 @@ static inline void map_memory_bank(struct membank *bank) #ifdef CONFIG_MMU struct map_desc map; - map.pfn = __phys_to_pfn(bank->start); - map.virtual = __phys_to_virt(bank->start); - map.length = bank->size; + map.pfn = bank_pfn_start(bank); + map.virtual = __phys_to_virt(bank_phys_start(bank)); + map.length = bank_phys_size(bank); map.type = MT_MEMORY; create_mapping(&map); #endif } -static unsigned long __init -bootmem_init_node(int node, int initrd_node, struct meminfo *mi) +static unsigned long __init bootmem_init_node(int node, struct meminfo *mi) { - unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; unsigned long start_pfn, end_pfn, boot_pfn; unsigned int boot_pages; pg_data_t *pgdat; @@ -199,8 +224,8 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) struct membank *bank = &mi->bank[i]; unsigned long start, end; - start = bank->start >> PAGE_SHIFT; - end = (bank->start + bank->size) >> PAGE_SHIFT; + start = bank_pfn_start(bank); + end = bank_pfn_end(bank); if (start_pfn > start) start_pfn = start; @@ -230,8 +255,11 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) pgdat = NODE_DATA(node); init_bootmem_node(pgdat, boot_pfn, start_pfn, end_pfn); - for_each_nodebank(i, mi, node) - free_bootmem_node(pgdat, mi->bank[i].start, mi->bank[i].size); + for_each_nodebank(i, mi, node) { + struct membank *bank = &mi->bank[i]; + free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank)); + memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank)); + } /* * Reserve the bootmem bitmap for this node. @@ -239,23 +267,39 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT, boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT); + return end_pfn; +} + +static void __init bootmem_reserve_initrd(int node) +{ #ifdef CONFIG_BLK_DEV_INITRD - /* - * If the initrd is in this node, reserve its memory. - */ - if (node == initrd_node) { - reserve_bootmem_node(pgdat, phys_initrd_start, - phys_initrd_size, BOOTMEM_DEFAULT); + pg_data_t *pgdat = NODE_DATA(node); + int res; + + res = reserve_bootmem_node(pgdat, phys_initrd_start, + phys_initrd_size, BOOTMEM_EXCLUSIVE); + + if (res == 0) { initrd_start = __phys_to_virt(phys_initrd_start); initrd_end = initrd_start + phys_initrd_size; + } else { + printk(KERN_ERR + "INITRD: 0x%08lx+0x%08lx overlaps in-use " + "memory region - disabling initrd\n", + phys_initrd_start, phys_initrd_size); } #endif +} - /* - * Finally, reserve any node zero regions. - */ - if (node == 0) - reserve_node_zero(pgdat); +static void __init bootmem_free_node(int node, struct meminfo *mi) +{ + unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; + unsigned long start_pfn, end_pfn; + pg_data_t *pgdat = NODE_DATA(node); + int i; + + start_pfn = pgdat->bdata->node_min_pfn; + end_pfn = pgdat->bdata->node_low_pfn; /* * initialise the zones within this node. @@ -276,7 +320,7 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) */ zhole_size[0] = zone_size[0]; for_each_nodebank(i, mi, node) - zhole_size[0] -= mi->bank[i].size >> PAGE_SHIFT; + zhole_size[0] -= bank_pfn_size(&mi->bank[i]); /* * Adjust the sizes according to any special requirements for @@ -285,21 +329,12 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) arch_adjust_zones(node, zone_size, zhole_size); free_area_init_node(node, zone_size, start_pfn, zhole_size); - - return end_pfn; } void __init bootmem_init(struct meminfo *mi) { unsigned long memend_pfn = 0; - int node, initrd_node, i; - - /* - * Invalidate the node number for empty or invalid memory banks - */ - for (i = 0; i < mi->nr_banks; i++) - if (mi->bank[i].size == 0 || mi->bank[i].node >= MAX_NUMNODES) - mi->bank[i].node = -1; + int node, initrd_node; memcpy(&meminfo, mi, sizeof(meminfo)); @@ -312,9 +347,19 @@ void __init bootmem_init(struct meminfo *mi) * Run through each node initialising the bootmem allocator. */ for_each_node(node) { - unsigned long end_pfn; + unsigned long end_pfn = bootmem_init_node(node, mi); - end_pfn = bootmem_init_node(node, initrd_node, mi); + /* + * Reserve any special node zero regions. + */ + if (node == 0) + reserve_node_zero(NODE_DATA(node)); + + /* + * If the initrd is in this node, reserve its memory. + */ + if (node == initrd_node) + bootmem_reserve_initrd(node); /* * Remember the highest memory PFN. @@ -323,6 +368,19 @@ void __init bootmem_init(struct meminfo *mi) memend_pfn = end_pfn; } + /* + * sparse_init() needs the bootmem allocator up and running. + */ + sparse_init(); + + /* + * Now free memory in each node - free_area_init_node needs + * the sparse mem_map arrays initialized by sparse_init() + * for memmap_init_zone(), otherwise all PFNs are invalid. + */ + for_each_node(node) + bootmem_free_node(node, mi); + high_memory = __va(memend_pfn << PAGE_SHIFT); /* @@ -393,7 +451,9 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi) * information on the command line. */ for_each_nodebank(i, mi, node) { - bank_start = mi->bank[i].start >> PAGE_SHIFT; + struct membank *bank = &mi->bank[i]; + + bank_start = bank_pfn_start(bank); if (bank_start < prev_bank_end) { printk(KERN_ERR "MEM: unordered memory banks. " "Not freeing memmap.\n"); @@ -407,8 +467,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi) if (prev_bank_end && prev_bank_end != bank_start) free_memmap(node, prev_bank_end, bank_start); - prev_bank_end = (mi->bank[i].start + - mi->bank[i].size) >> PAGE_SHIFT; + prev_bank_end = bank_pfn_end(bank); } } @@ -453,8 +512,8 @@ void __init mem_init(void) num_physpages = 0; for (i = 0; i < meminfo.nr_banks; i++) { - num_physpages += meminfo.bank[i].size >> PAGE_SHIFT; - printk(" %ldMB", meminfo.bank[i].size >> 20); + num_physpages += bank_pfn_size(&meminfo.bank[i]); + printk(" %ldMB", bank_phys_size(&meminfo.bank[i]) >> 20); } printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT)); |