ARM: 7644/1: vmregion: remove vmregion code entirely

Now, there is no user for vmregion.
So remove it.

Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile
index 8a9c4cb..4e333fa 100644 (file)
--- a/arch/arm/mm/Makefile
+++ b/arch/arm/mm/Makefile
@@ -6,7 +6,7 @@ obj-y                           := dma-mapping.o extable.o fault.o init.o \
                                   iomap.o
 
 obj-$(CONFIG_MMU)              += fault-armv.o flush.o idmap.o ioremap.o \
-                                  mmap.o pgd.o mmu.o vmregion.o
+                                  mmap.o pgd.o mmu.o
 
 ifneq ($(CONFIG_MMU),y)
 obj-y                          += nommu.o

diff --git a/arch/arm/mm/vmregion.c b/arch/arm/mm/vmregion.c
deleted file mode 100644 (file)
index a631016..0000000
--- a/arch/arm/mm/vmregion.c
+++ /dev/null
@@ -1,205 +0,0 @@
-#include <linux/fs.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-
-#include "vmregion.h"
-
-/*
- * VM region handling support.
- *
- * This should become something generic, handling VM region allocations for
- * vmalloc and similar (ioremap, module space, etc).
- *
- * I envisage vmalloc()'s supporting vm_struct becoming:
- *
- *  struct vm_struct {
- *    struct vmregion  region;
- *    unsigned long    flags;
- *    struct page      **pages;
- *    unsigned int     nr_pages;
- *    unsigned long    phys_addr;
- *  };
- *
- * get_vm_area() would then call vmregion_alloc with an appropriate
- * struct vmregion head (eg):
- *
- *  struct vmregion vmalloc_head = {
- *     .vm_list        = LIST_HEAD_INIT(vmalloc_head.vm_list),
- *     .vm_start       = VMALLOC_START,
- *     .vm_end         = VMALLOC_END,
- *  };
- *
- * However, vmalloc_head.vm_start is variable (typically, it is dependent on
- * the amount of RAM found at boot time.)  I would imagine that get_vm_area()
- * would have to initialise this each time prior to calling vmregion_alloc().
- */
-
-struct arm_vmregion *
-arm_vmregion_alloc(struct arm_vmregion_head *head, size_t align,
-                  size_t size, gfp_t gfp, const void *caller)
-{
-       unsigned long start = head->vm_start, addr = head->vm_end;
-       unsigned long flags;
-       struct arm_vmregion *c, *new;
-
-       if (head->vm_end - head->vm_start < size) {
-               printk(KERN_WARNING "%s: allocation too big (requested %#x)\n",
-                       __func__, size);
-               goto out;
-       }
-
-       new = kmalloc(sizeof(struct arm_vmregion), gfp);
-       if (!new)
-               goto out;
-
-       new->caller = caller;
-
-       spin_lock_irqsave(&head->vm_lock, flags);
-
-       addr = rounddown(addr - size, align);
-       list_for_each_entry_reverse(c, &head->vm_list, vm_list) {
-               if (addr >= c->vm_end)
-                       goto found;
-               addr = rounddown(c->vm_start - size, align);
-               if (addr < start)
-                       goto nospc;
-       }
-
- found:
-       /*
-        * Insert this entry after the one we found.
-        */
-       list_add(&new->vm_list, &c->vm_list);
-       new->vm_start = addr;
-       new->vm_end = addr + size;
-       new->vm_active = 1;
-
-       spin_unlock_irqrestore(&head->vm_lock, flags);
-       return new;
-
- nospc:
-       spin_unlock_irqrestore(&head->vm_lock, flags);
-       kfree(new);
- out:
-       return NULL;
-}
-
-static struct arm_vmregion *__arm_vmregion_find(struct arm_vmregion_head *head, unsigned long addr)
-{
-       struct arm_vmregion *c;
-
-       list_for_each_entry(c, &head->vm_list, vm_list) {
-               if (c->vm_active && c->vm_start == addr)
-                       goto out;
-       }
-       c = NULL;
- out:
-       return c;
-}
-
-struct arm_vmregion *arm_vmregion_find(struct arm_vmregion_head *head, unsigned long addr)
-{
-       struct arm_vmregion *c;
-       unsigned long flags;
-
-       spin_lock_irqsave(&head->vm_lock, flags);
-       c = __arm_vmregion_find(head, addr);
-       spin_unlock_irqrestore(&head->vm_lock, flags);
-       return c;
-}
-
-struct arm_vmregion *arm_vmregion_find_remove(struct arm_vmregion_head *head, unsigned long addr)
-{
-       struct arm_vmregion *c;
-       unsigned long flags;
-
-       spin_lock_irqsave(&head->vm_lock, flags);
-       c = __arm_vmregion_find(head, addr);
-       if (c)
-               c->vm_active = 0;
-       spin_unlock_irqrestore(&head->vm_lock, flags);
-       return c;
-}
-
-void arm_vmregion_free(struct arm_vmregion_head *head, struct arm_vmregion *c)
-{
-       unsigned long flags;
-
-       spin_lock_irqsave(&head->vm_lock, flags);
-       list_del(&c->vm_list);
-       spin_unlock_irqrestore(&head->vm_lock, flags);
-
-       kfree(c);
-}
-
-#ifdef CONFIG_PROC_FS
-static int arm_vmregion_show(struct seq_file *m, void *p)
-{
-       struct arm_vmregion *c = list_entry(p, struct arm_vmregion, vm_list);
-
-       seq_printf(m, "0x%08lx-0x%08lx %7lu", c->vm_start, c->vm_end,
-               c->vm_end - c->vm_start);
-       if (c->caller)
-               seq_printf(m, " %pS", (void *)c->caller);
-       seq_putc(m, '\n');
-       return 0;
-}
-
-static void *arm_vmregion_start(struct seq_file *m, loff_t *pos)
-{
-       struct arm_vmregion_head *h = m->private;
-       spin_lock_irq(&h->vm_lock);
-       return seq_list_start(&h->vm_list, *pos);
-}
-
-static void *arm_vmregion_next(struct seq_file *m, void *p, loff_t *pos)
-{
-       struct arm_vmregion_head *h = m->private;
-       return seq_list_next(p, &h->vm_list, pos);
-}
-
-static void arm_vmregion_stop(struct seq_file *m, void *p)
-{
-       struct arm_vmregion_head *h = m->private;
-       spin_unlock_irq(&h->vm_lock);
-}
-
-static const struct seq_operations arm_vmregion_ops = {
-       .start  = arm_vmregion_start,
-       .stop   = arm_vmregion_stop,
-       .next   = arm_vmregion_next,
-       .show   = arm_vmregion_show,
-};
-
-static int arm_vmregion_open(struct inode *inode, struct file *file)
-{
-       struct arm_vmregion_head *h = PDE(inode)->data;
-       int ret = seq_open(file, &arm_vmregion_ops);
-       if (!ret) {
-               struct seq_file *m = file->private_data;
-               m->private = h;
-       }
-       return ret;
-}
-
-static const struct file_operations arm_vmregion_fops = {
-       .open   = arm_vmregion_open,
-       .read   = seq_read,
-       .llseek = seq_lseek,
-       .release = seq_release,
-};
-
-int arm_vmregion_create_proc(const char *path, struct arm_vmregion_head *h)
-{
-       proc_create_data(path, S_IRUSR, NULL, &arm_vmregion_fops, h);
-       return 0;
-}
-#else
-int arm_vmregion_create_proc(const char *path, struct arm_vmregion_head *h)
-{
-       return 0;
-}
-#endif

diff --git a/arch/arm/mm/vmregion.h b/arch/arm/mm/vmregion.h
deleted file mode 100644 (file)
index 0f5a5f2..0000000
--- a/arch/arm/mm/vmregion.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#ifndef VMREGION_H
-#define VMREGION_H
-
-#include <linux/spinlock.h>
-#include <linux/list.h>
-
-struct page;
-
-struct arm_vmregion_head {
-       spinlock_t              vm_lock;
-       struct list_head        vm_list;
-       unsigned long           vm_start;
-       unsigned long           vm_end;
-};
-
-struct arm_vmregion {
-       struct list_head        vm_list;
-       unsigned long           vm_start;
-       unsigned long           vm_end;
-       int                     vm_active;
-       const void              *caller;
-};
-
-struct arm_vmregion *arm_vmregion_alloc(struct arm_vmregion_head *, size_t, size_t, gfp_t, const void *);
-struct arm_vmregion *arm_vmregion_find(struct arm_vmregion_head *, unsigned long);
-struct arm_vmregion *arm_vmregion_find_remove(struct arm_vmregion_head *, unsigned long);
-void arm_vmregion_free(struct arm_vmregion_head *, struct arm_vmregion *);
-
-int arm_vmregion_create_proc(const char *, struct arm_vmregion_head *);
-
-#endif