diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/um/kernel/mem.c | 86 |
1 files changed, 41 insertions, 45 deletions
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 1f8f0c19517..3eddc2091d4 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -1,28 +1,22 @@ /* - * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ -#include "linux/stddef.h" -#include "linux/kernel.h" -#include "linux/mm.h" -#include "linux/bootmem.h" -#include "linux/swap.h" -#include "linux/highmem.h" -#include "linux/gfp.h" -#include "asm/page.h" -#include "asm/fixmap.h" -#include "asm/pgalloc.h" -#include "kern_util.h" +#include <linux/stddef.h> +#include <linux/bootmem.h> +#include <linux/gfp.h> +#include <linux/highmem.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <asm/fixmap.h> +#include <asm/page.h> #include "as-layout.h" +#include "init.h" #include "kern.h" +#include "kern_util.h" #include "mem_user.h" -#include "um_uaccess.h" #include "os.h" -#include "linux/types.h" -#include "linux/string.h" -#include "init.h" -#include "kern_constants.h" /* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */ unsigned long *empty_zero_page = NULL; @@ -53,7 +47,7 @@ static void setup_highmem(unsigned long highmem_start, int i; highmem_pfn = __pa(highmem_start) >> PAGE_SHIFT; - for(i = 0; i < highmem_len >> PAGE_SHIFT; i++){ + for (i = 0; i < highmem_len >> PAGE_SHIFT; i++) { page = &mem_map[highmem_pfn + i]; ClearPageReserved(page); init_page_count(page); @@ -85,7 +79,7 @@ void __init mem_init(void) #endif num_physpages = totalram_pages; max_pfn = totalram_pages; - printk(KERN_INFO "Memory: %luk available\n", + printk(KERN_INFO "Memory: %luk available\n", (unsigned long) nr_free_pages() << (PAGE_SHIFT-10)); kmalloc_ok = 1; @@ -119,7 +113,7 @@ static void __init one_md_table_init(pud_t *pud) #endif } -static void __init fixrange_init(unsigned long start, unsigned long end, +static void __init fixrange_init(unsigned long start, unsigned long end, pgd_t *pgd_base) { pgd_t *pgd; @@ -206,7 +200,8 @@ static void __init fixaddr_user_init( void) paddr = (unsigned long)alloc_bootmem_low_pages( size); memcpy( (void *)paddr, (void *)FIXADDR_USER_START, size); paddr = __pa(paddr); - for ( ; size > 0; size-=PAGE_SIZE, vaddr+=PAGE_SIZE, paddr+=PAGE_SIZE){ + for ( ; size > 0; size -= PAGE_SIZE, vaddr += PAGE_SIZE, + paddr += PAGE_SIZE) { pgd = swapper_pg_dir + pgd_index(vaddr); pud = pud_offset(pgd, vaddr); pmd = pmd_offset(pud, vaddr); @@ -223,7 +218,7 @@ void __init paging_init(void) empty_zero_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE); empty_bad_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE); - for(i = 0; i < ARRAY_SIZE(zones_size); i++) + for (i = 0; i < ARRAY_SIZE(zones_size); i++) zones_size[i] = 0; zones_size[ZONE_NORMAL] = (end_iomem >> PAGE_SHIFT) - @@ -253,26 +248,26 @@ struct page *arch_validate(struct page *page, gfp_t mask, int order) int i; again: - if(page == NULL) + if (page == NULL) return page; - if(PageHighMem(page)) + if (PageHighMem(page)) return page; addr = (unsigned long) page_address(page); - for(i = 0; i < (1 << order); i++){ + for (i = 0; i < (1 << order); i++) { current->thread.fault_addr = (void *) addr; - if(__do_copy_to_user((void __user *) addr, &zero, + if (__do_copy_to_user((void __user *) addr, &zero, sizeof(zero), ¤t->thread.fault_addr, - ¤t->thread.fault_catcher)){ - if(!(mask & __GFP_WAIT)) + ¤t->thread.fault_catcher)) { + if (!(mask & __GFP_WAIT)) return NULL; else break; } addr += PAGE_SIZE; } - if(i == (1 << order)) + if (i == (1 << order)) return page; page = alloc_pages(mask, order); goto again; @@ -291,8 +286,8 @@ void free_initmem(void) void free_initrd_mem(unsigned long start, unsigned long end) { if (start < end) - printk ("Freeing initrd memory: %ldk freed\n", - (end - start) >> 10); + printk(KERN_INFO "Freeing initrd memory: %ldk freed\n", + (end - start) >> 10); for (; start < end; start += PAGE_SIZE) { ClearPageReserved(virt_to_page(start)); init_page_count(virt_to_page(start)); @@ -309,27 +304,28 @@ void show_mem(void) int highmem = 0; struct page *page; - printk("Mem-info:\n"); + printk(KERN_INFO "Mem-info:\n"); show_free_areas(); - printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10)); + printk(KERN_INFO "Free swap: %6ldkB\n", + nr_swap_pages<<(PAGE_SHIFT-10)); pfn = max_mapnr; - while(pfn-- > 0) { + while (pfn-- > 0) { page = pfn_to_page(pfn); total++; - if(PageHighMem(page)) + if (PageHighMem(page)) highmem++; - if(PageReserved(page)) + if (PageReserved(page)) reserved++; - else if(PageSwapCache(page)) + else if (PageSwapCache(page)) cached++; - else if(page_count(page)) + else if (page_count(page)) shared += page_count(page) - 1; } - printk("%d pages of RAM\n", total); - printk("%d pages of HIGHMEM\n", highmem); - printk("%d reserved pages\n", reserved); - printk("%d pages shared\n", shared); - printk("%d pages swap cached\n", cached); + printk(KERN_INFO "%d pages of RAM\n", total); + printk(KERN_INFO "%d pages of HIGHMEM\n", highmem); + printk(KERN_INFO "%d reserved pages\n", reserved); + printk(KERN_INFO "%d pages shared\n", shared); + printk(KERN_INFO "%d pages swap cached\n", cached); } /* Allocate and free page tables. */ @@ -340,8 +336,8 @@ pgd_t *pgd_alloc(struct mm_struct *mm) if (pgd) { memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t)); - memcpy(pgd + USER_PTRS_PER_PGD, - swapper_pg_dir + USER_PTRS_PER_PGD, + memcpy(pgd + USER_PTRS_PER_PGD, + swapper_pg_dir + USER_PTRS_PER_PGD, (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); } return pgd; |