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-rw-r--r--arch/mips/mm/vmalloc.c202
1 files changed, 0 insertions, 202 deletions
diff --git a/arch/mips/mm/vmalloc.c b/arch/mips/mm/vmalloc.c
deleted file mode 100644
index 9b3ab7f59..000000000
--- a/arch/mips/mm/vmalloc.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * linux/mm/vmalloc.c
- *
- * Copyright (C) 1993 Linus Torvalds
- */
-
-#include <asm/system.h>
-#include <linux/config.h>
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/head.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/malloc.h>
-#include <asm/segment.h>
-
-struct vm_struct {
- unsigned long flags;
- void * addr;
- unsigned long size;
- struct vm_struct * next;
-};
-
-static struct vm_struct * vmlist = NULL;
-
-/* Just any arbitrary offset to the start of the vmalloc VM area: the
- * current 8MB value just means that there will be a 8MB "hole" after the
- * physical memory until the kernel virtual memory starts. That means that
- * any out-of-bounds memory accesses will hopefully be caught.
- * The vmalloc() routines leaves a hole of 4kB between each vmalloced
- * area for the same reason. ;)
- */
-#define VMALLOC_OFFSET (8*1024*1024)
-
-static inline void set_pgdir(unsigned long dindex, unsigned long value)
-{
- struct task_struct * p;
-
- p = &init_task;
- do {
- ((unsigned long *) p->tss.pg_dir)[dindex] = value;
- p = p->next_task;
- } while (p != &init_task);
-}
-
-static int free_area_pages(unsigned long dindex, unsigned long index, unsigned long nr)
-{
- unsigned long page, *pte;
-
- if (!(PAGE_VALID & (page = swapper_pg_dir[dindex])))
- return 0;
- page &= PAGE_MASK;
- pte = index + (unsigned long *) page;
- do {
- unsigned long pg = *pte;
- *pte = 0;
- if (pg & PAGE_VALID)
- free_page(pg);
- pte++;
- } while (--nr);
- pte = (unsigned long *) page;
- for (nr = 0 ; nr < 1024 ; nr++, pte++)
- if (*pte)
- return 0;
- set_pgdir(dindex,0);
- mem_map[MAP_NR(page)] = 1;
- free_page(page);
- invalidate();
- return 0;
-}
-
-static int alloc_area_pages(unsigned long dindex, unsigned long index, unsigned long nr)
-{
- unsigned long page, *pte;
-
- page = swapper_pg_dir[dindex];
- if (!page) {
- page = get_free_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
- if (swapper_pg_dir[dindex]) {
- free_page(page);
- page = swapper_pg_dir[dindex];
- } else {
- mem_map[MAP_NR(page)] = MAP_PAGE_RESERVED;
- set_pgdir(dindex, page | PAGE_SHARED);
- }
- }
- page &= PAGE_MASK;
- pte = index + (unsigned long *) page;
- *pte = PAGE_SHARED; /* remove a race with vfree() */
- do {
- unsigned long pg = get_free_page(GFP_KERNEL);
-
- if (!pg)
- return -ENOMEM;
- *pte = pg | PAGE_SHARED;
- pte++;
- } while (--nr);
- invalidate();
- return 0;
-}
-
-static int do_area(void * addr, unsigned long size,
- int (*area_fn)(unsigned long,unsigned long,unsigned long))
-{
- unsigned long nr, dindex, index;
-
- nr = size >> PAGE_SHIFT;
- dindex = (TASK_SIZE + (unsigned long) addr) >> 22;
- index = (((unsigned long) addr) >> PAGE_SHIFT) & (PTRS_PER_PAGE-1);
- while (nr > 0) {
- unsigned long i = PTRS_PER_PAGE - index;
-
- if (i > nr)
- i = nr;
- nr -= i;
- if (area_fn(dindex, index, i))
- return -1;
- index = 0;
- dindex++;
- }
- return 0;
-}
-
-void vfree(void * addr)
-{
- struct vm_struct **p, *tmp;
-
- if (!addr)
- return;
- if ((PAGE_SIZE-1) & (unsigned long) addr) {
- printk("Trying to vfree() bad address (%p)\n", addr);
- return;
- }
- for (p = &vmlist ; (tmp = *p) ; p = &tmp->next) {
- if (tmp->addr == addr) {
- *p = tmp->next;
- do_area(tmp->addr, tmp->size, free_area_pages);
- kfree(tmp);
- return;
- }
- }
- printk("Trying to vfree() nonexistent vm area (%p)\n", addr);
-}
-
-void * vmalloc(unsigned long size)
-{
- void * addr;
- struct vm_struct **p, *tmp, *area;
-
- size = PAGE_ALIGN(size);
- if (!size || size > high_memory)
- return NULL;
- area = (struct vm_struct *) kmalloc(sizeof(*area), GFP_KERNEL);
- if (!area)
- return NULL;
- addr = (void *) ((high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1));
- area->size = size + PAGE_SIZE;
- area->next = NULL;
- for (p = &vmlist; (tmp = *p) ; p = &tmp->next) {
- if (size + (unsigned long) addr < (unsigned long) tmp->addr)
- break;
- addr = (void *) (tmp->size + (unsigned long) tmp->addr);
- }
- area->addr = addr;
- area->next = *p;
- *p = area;
- if (do_area(addr, size, alloc_area_pages)) {
- vfree(addr);
- return NULL;
- }
- return addr;
-}
-
-int vread(char *buf, char *addr, int count)
-{
- struct vm_struct **p, *tmp;
- char *vaddr, *buf_start = buf;
- int n;
-
- for (p = &vmlist; (tmp = *p) ; p = &tmp->next) {
- vaddr = (char *) tmp->addr;
- while (addr < vaddr) {
- if (count == 0)
- goto finished;
- put_fs_byte('\0', buf++), addr++, count--;
- }
- n = tmp->size - PAGE_SIZE;
- if (addr > vaddr)
- n -= addr - vaddr;
- while (--n >= 0) {
- if (count == 0)
- goto finished;
- put_fs_byte(*addr++, buf++), count--;
- }
- }
-finished:
- return buf - buf_start;
-}