#include <linux/bootmem.h>
#include <linux/highmem.h>
#include <linux/swap.h>
+#include <linux/proc_fs.h>
+#include <linux/pfn.h>
#include <asm/bootinfo.h>
#include <asm/cachectl.h>
*/
unsigned long setup_zero_pages(void)
{
- unsigned long order, size;
+ unsigned int order;
+ unsigned long size;
struct page *page;
if (cpu_has_vce)
panic("Oh boy, that early out of memory?");
page = virt_to_page(empty_zero_page);
+ split_page(page, order);
while (page < virt_to_page(empty_zero_page + (PAGE_SIZE << order))) {
SetPageReserved(page);
- set_page_count(page, 1);
page++;
}
free_area_init(zones_size);
}
-#define PFN_UP(x) (((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-
static inline int page_is_ram(unsigned long pagenr)
{
int i;
return 0;
}
+static struct kcore_list kcore_mem, kcore_vmalloc;
+#ifdef CONFIG_64BIT
+static struct kcore_list kcore_kseg0;
+#endif
+
void __init mem_init(void)
{
unsigned long codesize, reservedpages, datasize, initsize;
for (tmp = 0; tmp < max_low_pfn; tmp++)
if (page_is_ram(tmp)) {
ram++;
- if (PageReserved(mem_map+tmp))
+ if (PageReserved(pfn_to_page(tmp)))
reservedpages++;
}
#ifdef CONFIG_LIMITED_DMA
set_page_address(page, lowmem_page_address(page));
#endif
- set_page_count(page, 1);
+ init_page_count(page);
__free_page(page);
totalhigh_pages++;
}
datasize = (unsigned long) &_edata - (unsigned long) &_etext;
initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
+#ifdef CONFIG_64BIT
+ if ((unsigned long) &_text > (unsigned long) CKSEG0)
+ /* The -4 is a hack so that user tools don't have to handle
+ the overflow. */
+ kclist_add(&kcore_kseg0, (void *) CKSEG0, 0x80000000 - 4);
+#endif
+ kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
+ kclist_add(&kcore_vmalloc, (void *)VMALLOC_START,
+ VMALLOC_END-VMALLOC_START);
+
printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
"%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
}
#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+void free_init_pages(char *what, unsigned long begin, unsigned long end)
+{
+ unsigned long addr;
+
+ for (addr = begin; addr < end; addr += PAGE_SIZE) {
+ ClearPageReserved(virt_to_page(addr));
+ init_page_count(virt_to_page(addr));
+ memset((void *)addr, 0xcc, PAGE_SIZE);
+ free_page(addr);
+ totalram_pages++;
+ }
+ printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+}
+
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
start = (unsigned long)phys_to_virt(CPHYSADDR(start));
end = (unsigned long)phys_to_virt(CPHYSADDR(end));
#endif
- if (start < end)
- printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
- (end - start) >> 10);
-
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- set_page_count(virt_to_page(start), 1);
- free_page(start);
- totalram_pages++;
- }
+ free_init_pages("initrd memory", start, end);
}
#endif
void free_initmem(void)
{
- unsigned long addr, page, freed;
+ unsigned long start, end, freed;
freed = prom_free_prom_memory();
+ if (freed)
+ printk(KERN_INFO "Freeing firmware memory: %ldk freed\n",freed);
- addr = (unsigned long) &__init_begin;
- while (addr < (unsigned long) &__init_end) {
+ start = (unsigned long)(&__init_begin);
+ end = (unsigned long)(&__init_end);
#ifdef CONFIG_64BIT
- page = PAGE_OFFSET | CPHYSADDR(addr);
-#else
- page = addr;
+ start = PAGE_OFFSET | CPHYSADDR(start);
+ end = PAGE_OFFSET | CPHYSADDR(end);
#endif
- ClearPageReserved(virt_to_page(page));
- set_page_count(virt_to_page(page), 1);
- free_page(page);
- totalram_pages++;
- freed += PAGE_SIZE;
- addr += PAGE_SIZE;
- }
- printk(KERN_INFO "Freeing unused kernel memory: %ldk freed\n",
- freed >> 10);
+ free_init_pages("unused kernel memory", start, end);
}