| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
[Xen-devel] [PATCH 2/3] mm: Add SECTION_ALIGN_UP() and SECTION_ALIGN_DOW
|
To: |
ian.campbell@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, andi.kleen@xxxxxxxxx, haicheng.li@xxxxxxxxxxxxxxx, fengguang.wu@xxxxxxxxx, jeremy@xxxxxxxx, konrad.wilk@xxxxxxxxxx, dan.magenheimer@xxxxxxxxxx, v.tolstov@xxxxxxxxx, pasik@xxxxxx, dave@xxxxxxxxxxxxxxxxxx, wdauchy@xxxxxxxxx, rientjes@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx |
|
Subject: |
[Xen-devel] [PATCH 2/3] mm: Add SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macro |
|
From: |
Daniel Kiper <dkiper@xxxxxxxxxxxx> |
|
Date: |
Mon, 28 Mar 2011 11:24:12 +0200 |
|
Cc: |
|
|
Delivery-date: |
Mon, 28 Mar 2011 02:25:54 -0700 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
List-help: |
<mailto:xen-devel-request@lists.xensource.com?subject=help> |
|
List-id: |
Xen developer discussion <xen-devel.lists.xensource.com> |
|
List-post: |
<mailto:xen-devel@lists.xensource.com> |
|
List-subscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
User-agent: |
Mutt/1.3.28i |
Add SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macro which aligns
given pfn to upper section and lower section boundary accordingly.
Signed-off-by: Daniel Kiper <dkiper@xxxxxxxxxxxx>
---
include/linux/mmzone.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 02ecb01..d342820 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -931,6 +931,9 @@ static inline unsigned long early_pfn_to_nid(unsigned long
pfn)
#define pfn_to_section_nr(pfn) ((pfn) >> PFN_SECTION_SHIFT)
#define section_nr_to_pfn(sec) ((sec) << PFN_SECTION_SHIFT)
+#define SECTION_ALIGN_UP(pfn) (((pfn) + PAGES_PER_SECTION - 1) &
PAGE_SECTION_MASK)
+#define SECTION_ALIGN_DOWN(pfn) ((pfn) & PAGE_SECTION_MASK)
+
#ifdef CONFIG_SPARSEMEM
/*
--
1.5.6.5
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread>
|
- [Xen-devel] [PATCH 2/3] mm: Add SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macro,
Daniel Kiper <=
|
|
|
| |
|
Home