X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fum%2Fkernel%2Fmem.c;h=72ff85693a399846bcb54ada54396d6ddf68b0a4;hb=5335a40be6867eff986a31bcd8fc82a5cb1e16bb;hp=c95855ba6ab576f7063f3bdf825efb8182a13b9a;hpb=f0b364a13d7fba001c0571d954f165dfaf5f434a;p=powerpc.git

diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index c95855ba6a..72ff85693a 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -13,8 +13,8 @@
 #include "asm/page.h"
 #include "asm/fixmap.h"
 #include "asm/pgalloc.h"
-#include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "kern.h"
 #include "mem_user.h"
 #include "uml_uaccess.h"
@@ -24,8 +24,9 @@
 #include "init.h"
 #include "kern_constants.h"
 
-/* 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 long highmem;
@@ -63,10 +64,8 @@ static void setup_highmem(unsigned long highmem_start,
 
 void mem_init(void)
 {
-	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.
@@ -79,6 +78,7 @@ void mem_init(void)
 
 	/* this will put all low memory onto the freelists */
 	totalram_pages = free_all_bootmem();
+	max_low_pfn = totalram_pages;
 #ifdef CONFIG_HIGHMEM
 	totalhigh_pages = highmem >> PAGE_SHIFT;
 	totalram_pages += totalhigh_pages;
@@ -216,7 +216,7 @@ static void __init fixaddr_user_init( void)
 #endif
 }
 
-void paging_init(void)
+void __init paging_init(void)
 {
 	unsigned long zones_size[MAX_NR_ZONES], vaddr;
 	int i;
@@ -253,8 +253,10 @@ struct page *arch_validate(struct page *page, gfp_t mask, int order)
 	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++){
@@ -263,13 +265,15 @@ struct page *arch_validate(struct page *page, gfp_t mask, int order)
 				     sizeof(zero),
 				     &current->thread.fault_addr,
 				     &current->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;
 }
@@ -283,7 +287,6 @@ void free_initmem(void)
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
-
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
 	if (start < end)
@@ -296,37 +299,36 @@ void free_initrd_mem(unsigned long start, unsigned long 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);
 }
 
 /*
@@ -362,28 +364,7 @@ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 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:
- */