* Copyright (c) 2000-2003 David McCullough <davidm@snapgear.com>
* Copyright (c) 2000-2001 D Jeff Dionne <jeff@uClinux.org>
* Copyright (c) 2002 Greg Ungerer <gerg@snapgear.com>
- * Copyright (c) 2007-2008 Paul Mundt <lethal@linux-sh.org>
+ * Copyright (c) 2007-2009 Paul Mundt <lethal@linux-sh.org>
*/
#include <linux/module.h>
int sysctl_nr_trim_pages = 1; /* page trimming behaviour */
int heap_stack_gap = 0;
-atomic_t mmap_pages_allocated;
+atomic_long_t mmap_pages_allocated;
EXPORT_SYMBOL(mem_map);
EXPORT_SYMBOL(num_physpages);
}
EXPORT_SYMBOL(vunmap);
+void *vm_map_ram(struct page **pages, unsigned int count, int node, pgprot_t prot)
+{
+ BUG();
+ return NULL;
+}
+EXPORT_SYMBOL(vm_map_ram);
+
+void vm_unmap_ram(const void *mem, unsigned int count)
+{
+ BUG();
+}
+EXPORT_SYMBOL(vm_unmap_ram);
+
+void vm_unmap_aliases(void)
+{
+}
+EXPORT_SYMBOL_GPL(vm_unmap_aliases);
+
/*
* Implement a stub for vmalloc_sync_all() if the architecture chose not to
* have one.
* to a regular file. in this case, the unmapping will need
* to invoke file system routines that need the global lock.
*/
-asmlinkage long sys_brk(unsigned long brk)
+SYSCALL_DEFINE1(brk, unsigned long, brk)
{
struct mm_struct *mm = current->mm;
*/
void __init mmap_init(void)
{
- vm_region_jar = kmem_cache_create("vm_region_jar",
- sizeof(struct vm_region), 0,
- SLAB_PANIC, NULL);
- vm_area_cachep = kmem_cache_create("vm_area_struct",
- sizeof(struct vm_area_struct), 0,
- SLAB_PANIC, NULL);
+ vm_region_jar = KMEM_CACHE(vm_region, SLAB_PANIC);
}
/*
return;
last = rb_entry(lastp, struct vm_region, vm_rb);
- if (unlikely(last->vm_end <= last->vm_start))
- BUG();
- if (unlikely(last->vm_top < last->vm_end))
- BUG();
+ BUG_ON(unlikely(last->vm_end <= last->vm_start));
+ BUG_ON(unlikely(last->vm_top < last->vm_end));
while ((p = rb_next(lastp))) {
region = rb_entry(p, struct vm_region, vm_rb);
last = rb_entry(lastp, struct vm_region, vm_rb);
- if (unlikely(region->vm_end <= region->vm_start))
- BUG();
- if (unlikely(region->vm_top < region->vm_end))
- BUG();
- if (unlikely(region->vm_start < last->vm_top))
- BUG();
+ BUG_ON(unlikely(region->vm_end <= region->vm_start));
+ BUG_ON(unlikely(region->vm_top < region->vm_end));
+ BUG_ON(unlikely(region->vm_start < last->vm_top));
lastp = p;
}
}
#else
-#define validate_nommu_regions() do {} while(0)
+static void validate_nommu_regions(void)
+{
+}
#endif
/*
struct page *page = virt_to_page(from);
kdebug("- free %lx", from);
- atomic_dec(&mmap_pages_allocated);
+ atomic_long_dec(&mmap_pages_allocated);
if (page_count(page) != 1)
- kdebug("free page %p [%d]", page, page_count(page));
+ kdebug("free page %p: refcount not one: %d",
+ page, page_count(page));
put_page(page);
}
}
/*
* release a reference to a region
- * - the caller must hold the region semaphore, which this releases
+ * - the caller must hold the region semaphore for writing, which this releases
* - the region may not have been added to the tree yet, in which case vm_top
* will equal vm_start
*/
goto enomem;
total = 1 << order;
- atomic_add(total, &mmap_pages_allocated);
+ atomic_long_add(total, &mmap_pages_allocated);
point = rlen >> PAGE_SHIFT;
order = ilog2(total - point);
n = 1 << order;
kdebug("shave %lu/%lu @%lu", n, total - point, total);
- atomic_sub(n, &mmap_pages_allocated);
+ atomic_long_sub(n, &mmap_pages_allocated);
total -= n;
set_page_refcounted(pages + total);
__free_pages(pages + total, order);
return ret;
enomem:
- printk("Allocation of length %lu from process %d failed\n",
- len, current->pid);
+ printk("Allocation of length %lu from process %d (%s) failed\n",
+ len, current->pid, current->comm);
show_free_areas();
return -ENOMEM;
}
/* find the first potentially overlapping VMA */
vma = find_vma(mm, start);
if (!vma) {
- printk(KERN_WARNING
- "munmap of memory not mmapped by process %d (%s):"
- " 0x%lx-0x%lx\n",
- current->pid, current->comm, start, start + len - 1);
+ static int limit = 0;
+ if (limit < 5) {
+ printk(KERN_WARNING
+ "munmap of memory not mmapped by process %d"
+ " (%s): 0x%lx-0x%lx\n",
+ current->pid, current->comm,
+ start, start + len - 1);
+ limit++;
+ }
return -EINVAL;
}
}
EXPORT_SYMBOL(do_munmap);
-asmlinkage long sys_munmap(unsigned long addr, size_t len)
+SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
{
int ret;
struct mm_struct *mm = current->mm;
}
EXPORT_SYMBOL(do_mremap);
-asmlinkage
-unsigned long sys_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr)
+SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
+ unsigned long, new_len, unsigned long, flags,
+ unsigned long, new_addr)
{
unsigned long ret;