#include "init.h"
#include "kern_constants.h"
-extern char __binary_start;
-
-/* Changed during early boot */
+/* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */
unsigned long *empty_zero_page = NULL;
+/* allocated in paging_init and unchanged thereafter */
unsigned long *empty_bad_page = NULL;
pgd_t swapper_pg_dir[PTRS_PER_PGD];
-unsigned long highmem;
+unsigned long long highmem;
int kmalloc_ok = 0;
static unsigned long brk_end;
void mem_init(void)
{
- unsigned long start;
-
max_low_pfn = (high_physmem - uml_physmem) >> PAGE_SHIFT;
- /* clear the zero-page */
- memset((void *) empty_zero_page, 0, PAGE_SIZE);
+ /* clear the zero-page */
+ memset((void *) empty_zero_page, 0, PAGE_SIZE);
/* Map in the area just after the brk now that kmalloc is about
* to be turned on.
free_bootmem(__pa(brk_end), uml_reserved - brk_end);
uml_reserved = brk_end;
- /* Fill in any hole at the start of the binary */
- start = (unsigned long) &__binary_start & PAGE_MASK;
- if(uml_physmem != start){
- map_memory(uml_physmem, __pa(uml_physmem), start - uml_physmem,
- 1, 1, 0);
- }
-
/* this will put all low memory onto the freelists */
totalram_pages = free_all_bootmem();
+#ifdef CONFIG_HIGHMEM
totalhigh_pages = highmem >> PAGE_SHIFT;
totalram_pages += totalhigh_pages;
+#endif
num_physpages = totalram_pages;
max_pfn = totalram_pages;
printk(KERN_INFO "Memory: %luk available\n",
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<sizeof(zones_size)/sizeof(zones_size[0]);i++)
+ for(i = 0; i < ARRAY_SIZE(zones_size); i++)
zones_size[i] = 0;
- zones_size[ZONE_DMA] = (end_iomem >> PAGE_SHIFT) - (uml_physmem >> PAGE_SHIFT);
+
+ zones_size[ZONE_NORMAL] = (end_iomem >> PAGE_SHIFT) -
+ (uml_physmem >> PAGE_SHIFT);
+#ifdef CONFIG_HIGHMEM
zones_size[ZONE_HIGHMEM] = highmem >> PAGE_SHIFT;
+#endif
free_area_init(zones_size);
/*
int i;
again:
- if(page == NULL) return(page);
- if(PageHighMem(page)) return(page);
+ if(page == NULL)
+ return page;
+ if(PageHighMem(page))
+ return page;
addr = (unsigned long) page_address(page);
for(i = 0; i < (1 << order); i++){
sizeof(zero),
¤t->thread.fault_addr,
¤t->thread.fault_catcher)){
- if(!(mask & __GFP_WAIT)) return(NULL);
+ if(!(mask & __GFP_WAIT))
+ return NULL;
else break;
}
addr += PAGE_SIZE;
}
- if(i == (1 << order)) return(page);
+ if(i == (1 << order))
+ return page;
page = alloc_pages(mask, order);
goto again;
}
}
#ifdef CONFIG_BLK_DEV_INITRD
-
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (start < end)
totalram_pages++;
}
}
-
#endif
void show_mem(void)
{
- int pfn, total = 0, reserved = 0;
- int shared = 0, cached = 0;
- int highmem = 0;
+ int pfn, total = 0, reserved = 0;
+ int shared = 0, cached = 0;
+ int highmem = 0;
struct page *page;
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- pfn = max_mapnr;
- while(pfn-- > 0) {
+ printk("Mem-info:\n");
+ show_free_areas();
+ printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
+ pfn = max_mapnr;
+ while(pfn-- > 0) {
page = pfn_to_page(pfn);
- total++;
- if(PageHighMem(page))
- highmem++;
- if(PageReserved(page))
- reserved++;
- else if(PageSwapCache(page))
- cached++;
- 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);
+ total++;
+ if(PageHighMem(page))
+ highmem++;
+ if(PageReserved(page))
+ reserved++;
+ else if(PageSwapCache(page))
+ cached++;
+ 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);
}
/*
struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
struct page *pte;
-
+
pte = alloc_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
return pte;
}
-
-struct iomem_region *iomem_regions = NULL;
-int iomem_size = 0;
-
-extern int parse_iomem(char *str, int *add) __init;
-
-__uml_setup("iomem=", parse_iomem,
-"iomem=<name>,<file>\n"
-" Configure <file> as an IO memory region named <name>.\n\n"
-);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
projects / linux-drm-fsl-dcu.git / blobdiff