sh: wire up vmallocinfo support in ioremap() implementations.

This wires up the caller information for the ioremap VMA, which allows
for more helpful caller tracking via /proc/vmallocinfo. Follows the x86
and powerpc changes of the same nature.

Signed-off-by: Paul Mundt <[e-mail]>

arch/sh/include/asm/io.h

···
  * doesn't exist, so everything must go through page tables.
  */
 #ifdef CONFIG_MMU
-void __iomem *__ioremap(unsigned long offset, unsigned long size,
-			unsigned long flags);
+void __iomem *__ioremap_caller(unsigned long offset, unsigned long size,
+			       unsigned long flags, void *caller);
 void __iounmap(void __iomem *addr);
+
+static inline void __iomem *
+__ioremap(unsigned long offset, unsigned long size, unsigned long flags)
+{
+	return __ioremap_caller(offset, size, flags, __builtin_return_address(0));
+}
 
 static inline void __iomem *
 __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)

arch/sh/mm/ioremap_32.c

···
  * have to convert them into an offset in a page-aligned mapping, but the
  * caller shouldn't need to know that small detail.
  */
-void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
-			unsigned long flags)
+void __iomem *__ioremap_caller(unsigned long phys_addr, unsigned long size,
+			       unsigned long flags, void *caller)
 {
-	struct vm_struct * area;
+	struct vm_struct *area;
 	unsigned long offset, last_addr, addr, orig_addr;
 	pgprot_t pgprot;
 
···
 	/*
 	 * Ok, go for it..
 	 */
-	area = get_vm_area(size, VM_IOREMAP);
+	area = get_vm_area_caller(size, VM_IOREMAP, caller);
 	if (!area)
 		return NULL;
 	area->phys_addr = phys_addr;
···
 
 	return (void __iomem *)(offset + (char *)orig_addr);
 }
-EXPORT_SYMBOL(__ioremap);
+EXPORT_SYMBOL(__ioremap_caller);
 
 void __iounmap(void __iomem *addr)
 {

arch/sh/mm/ioremap_64.c

···
 	pte_clear(&init_mm, vaddr, ptep);
 }
 
-void __iomem *__ioremap(unsigned long offset, unsigned long size,
-			unsigned long flags)
+void __iomem *__ioremap_caller(unsigned long offset, unsigned long size,
+			       unsigned long flags, void *caller)
 {
 	char name[14];
 
 	sprintf(name, "phys_%08x", (u32)offset);
 	return shmedia_alloc_io(offset, size, name, flags);
 }
-EXPORT_SYMBOL(__ioremap);
+EXPORT_SYMBOL(__ioremap_caller);
 
 void __iounmap(void __iomem *virtual)
 {