lkml.org 
[lkml]   [2001]   [May]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH] Small kernel-api addition
On Thu, 10 May 2001, David Woodhouse wrote:

> I'd suggest s/that may be/that are expected to be/

thanks, how about this :

--- Documentation/DocBook/kernel-api.tmpl.old Thu May 10 18:02:05 2001
+++ Documentation/DocBook/kernel-api.tmpl Thu May 10 18:02:57 2001
@@ -41,8 +41,9 @@
!Iinclude/linux/init.h
</sect1>

- <sect1><title>Atomics</title>
+ <sect1><title>Atomic and pointer manipulation</title>
!Iinclude/asm-i386/atomic.h
+!Iinclude/asm-i386/unaligned.h
</sect1>

<sect1><title>Delaying, scheduling, and timer routines</title>
--- include/asm-i386/unaligned.h.old Thu May 10 17:54:28 2001
+++ include/asm-i386/unaligned.h Thu May 10 19:38:55 2001
@@ -9,8 +9,29 @@
* architectures where unaligned accesses aren't as simple.
*/

+/**
+ * get_unaligned - get value from possibly mis-aligned location
+ * @ptr: pointer to value
+ *
+ * This macro should be used for accessing values larger in size than
+ * single bytes at locations that are expected to be improperly aligned,
+ * e.g. retrieving a u16 value from a location not u16-aligned.
+ *
+ * Note that unaligned accesses can be very expensive on some architectures.
+ */
#define get_unaligned(ptr) (*(ptr))

+/**
+ * put_unaligned - put value to a possibly mis-aligned location
+ * @val: value to place
+ * @ptr: pointer to location
+ *
+ * This macro should be used for placing values larger in size than
+ * single bytes at locations that are expected to be improperly aligned,
+ * e.g. writing a u16 value to a location not u16-aligned.
+ *
+ * Note that unaligned accesses can be very expensive on some architectures.
+ */
#define put_unaligned(val, ptr) ((void)( *(ptr) = (val) ))

#endif
-
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: 2005-03-22 12:52    [from the cache]
©2003-2011 Jasper Spaans