[Gc-linux-cvs] linux/kernel kexec.c,1.4,1.5

[Albert H. <he...@us...>]

Update of /cvsroot/gc-linux/linux/kernel
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv751/kernel

Modified Files:
	kexec.c 
Log Message:
Merge gc-linux-v2.6.31.


Index: kexec.c
===================================================================
RCS file: /cvsroot/gc-linux/linux/kernel/kexec.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -C2 -d -r1.4 -r1.5
*** kexec.c	25 Oct 2009 18:56:56 -0000	1.4
--- kexec.c	25 Oct 2009 18:59:28 -0000	1.5
***************
*** 581,590 ****
  
  
! static int kimage_add_page(struct kimage *image, unsigned long page)
  {
  	int result;
  
  	page &= PAGE_MASK;
! 	result = kimage_add_entry(image, page | IND_SOURCE);
  	if (result == 0)
  		image->destination += PAGE_SIZE;
--- 581,591 ----
  
  
! static inline int kimage_add_page_with_flags(struct kimage *image,
! 					     unsigned long page, int flags)
  {
  	int result;
  
  	page &= PAGE_MASK;
! 	result = kimage_add_entry(image, page | (flags & ~PAGE_MASK));
  	if (result == 0)
  		image->destination += PAGE_SIZE;
***************
*** 593,596 ****
--- 594,607 ----
  }
  
+ static int kimage_add_page(struct kimage *image, unsigned long page)
+ {
+ 	return kimage_add_page_with_flags(image, page, IND_SOURCE);
+ }
+ 
+ static int kimage_add_page_noalloc(struct kimage *image, unsigned long page)
+ {
+ 	return kimage_add_page_with_flags(image, page, IND_SOURCE|IND_NOALLOC);
+ }
+ 
  
  static void kimage_free_extra_pages(struct kimage *image)
***************
*** 611,614 ****
--- 622,646 ----
  }
  
+ int kimage_add_preserved_region(struct kimage *image, unsigned long to,
+ 				       unsigned long from, int length)
+ {
+ 	int result = 0;
+ 
+ 	if (length > 0) {
+ 		result = kimage_set_destination(image, to);
+ 		if (result < 0)
+ 			goto out;
+ 		while (length > 0) {
+ 			result = kimage_add_page_noalloc(image, from);
+ 			if (result < 0)
+ 				goto out;
+ 			from += PAGE_SIZE;
+ 			length -= PAGE_SIZE;
+ 		}
+ 	}
+ out:
+ 	return result;
+ }
+ 
  #define for_each_kimage_entry(image, ptr, entry) \
  	for (ptr = &image->head; (entry = *ptr) && !(entry & IND_DONE); \
***************
*** 642,648 ****
  			 */
  			ind = entry;
  		}
- 		else if (entry & IND_SOURCE)
- 			kimage_free_entry(entry);
  	}
  	/* Free the final indirection page */
--- 674,682 ----
  			 */
  			ind = entry;
+ 		} else if (entry & IND_SOURCE) {
+ 			/* free only entries that we really allocated */
+ 			if (!(entry & IND_NOALLOC))
+ 				kimage_free_entry(entry);
  		}
  	}
  	/* Free the final indirection page */