lkml.org 
[lkml]   [2006]   [Feb]   [8]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
DateWed, 08 Feb 2006 15:00:04 +0900
FromKAMEZAWA Hiroyuki <>
Subject[PATCH] unify pfn_to_page take 2 [10/25] h8300 funcs
Looks complicated..
ex) page_to_pfn()
(((page - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) >> PAGE_SHIFT
is same to
(page - mem_map) + (PAGE_OFFSET >> PAGE_SHIFT)

H8300 can use generic ones.
Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

Index: test-layout-free-zone/include/asm-h8300/page.h
===================================================================
--- test-layout-free-zone.orig/include/asm-h8300/page.h
+++ test-layout-free-zone/include/asm-h8300/page.h
@@ -71,8 +71,7 @@ extern unsigned long memory_end;
  #define page_to_virt(page)	((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
  #define pfn_valid(page)	        (page < max_mapnr)

-#define pfn_to_page(pfn)	virt_to_page(pfn_to_virt(pfn))
-#define page_to_pfn(page)	virt_to_pfn(page_to_virt(page))
+#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)

  #define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
  				((void *)(kaddr) < (void *)memory_end))
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-02-08 06:01    [from the cache]
©2003-2008