[PATCH] uml: Use ARRAY_SIZE more assiduously

[linux-2.6-omap-h63xx.git] / arch / um / kernel / mem.c

diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 92cce96b5e24d01f50d7502ba81f1b64e98a1683..93121c6d26e55594fe8bb505ebdd17ef20de145c 100644 (file)
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -24,13 +24,11 @@
 #include "init.h"
 #include "kern_constants.h"
 
-extern char __binary_start;
-
 /* Changed during early boot */
 unsigned long *empty_zero_page = NULL;
 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;
@@ -65,8 +63,6 @@ static void setup_highmem(unsigned long highmem_start,
 
 void mem_init(void)
 {
-       unsigned long start;
-
        max_low_pfn = (high_physmem - uml_physmem) >> PAGE_SHIFT;
 
         /* clear the zero-page */
@@ -81,17 +77,12 @@ void mem_init(void)
        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", 
@@ -232,10 +223,13 @@ void 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<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);
+#ifdef CONFIG_HIGHMEM
        zones_size[ZONE_HIGHMEM] = highmem >> PAGE_SHIFT;
+#endif
        free_area_init(zones_size);
 
        /*