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From: Zhang Yanfei <zhangyanfei.yes@gmail.com>
To: Simon Horman <horms@verge.net.au>
Cc: "kexec@lists.infradead.org" <kexec@lists.infradead.org>
Subject: [PATCH 01/13] kexec: add _ALIGN* marcos for align operation
Date: Thu, 14 Mar 2013 01:19:13 +0800	[thread overview]
Message-ID: <5140B511.7020109@gmail.com> (raw)

From: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>

This patch imports Macros for align operation:
- _ALIGN_UP(addr, size): align addr up on a size boundary
- _ALIGN_DOWN(addr, size): align addr down on a size boundary
- _ALIGN(addr, size): align addr up on a size boundary

Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
---
 kexec/kexec.h |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/kexec/kexec.h b/kexec/kexec.h
index 94c62c1..916a24b 100644
--- a/kexec/kexec.h
+++ b/kexec/kexec.h
@@ -100,6 +100,18 @@ do { \
 	} \
 } while(0)
 
+#define _ALIGN_UP_MASK(addr, mask)   (((addr) + (mask)) & ~(mask))
+#define _ALIGN_DOWN_MASK(addr, mask) ((addr) & ~(mask))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size)	     \
+	_ALIGN_UP_MASK(addr, (typeof(addr))(size) - 1)
+#define _ALIGN_DOWN(addr, size)	     \
+	_ALIGN_DOWN_MASK(addr, (typeof(addr))(size) - 1)
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size)     _ALIGN_UP(addr, size)
+
 extern unsigned long long mem_min, mem_max;
 extern int kexec_debug;
 
-- 
1.7.1

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             reply	other threads:[~2013-03-13 17:19 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-13 17:19 Zhang Yanfei [this message]
2013-03-13 17:21 ` [PATCH 02/13] kexec: use _ALIGN() instead of align() Zhang Yanfei
2013-03-14  9:48   ` Simon Horman
2013-03-13 17:23 ` [PATCH 03/13] kexec: ppc: remove duplicated _ALIGN_* macros Zhang Yanfei
2013-03-14  9:48   ` Simon Horman
2013-03-13 17:26 ` [PATCH 04/13] kexec: use _ALIGN* to make the logic clear Zhang Yanfei
2013-03-14  9:08   ` Simon Horman
2013-03-14  9:48     ` Zhang Yanfei
2013-03-14 10:06       ` Simon Horman
2013-03-14  9:49     ` Simon Horman
2013-03-14  9:58       ` Simon Horman
2013-03-14 11:24         ` [PATCH v2 " Zhang Yanfei
2013-03-14 11:26         ` [PATCH " Zhang Yanfei
2013-03-15  8:35           ` Simon Horman
2013-03-15  9:46             ` [PATCH v3 " Zhang Yanfei
2013-03-15 15:52               ` Simon Horman
2013-03-13 17:28 ` [PATCH 05/13] kexec: i386: " Zhang Yanfei
2013-03-14  9:50   ` Simon Horman
2013-03-13 17:29 ` [PATCH 06/13] kexec: arm: " Zhang Yanfei
2013-03-14  9:50   ` Simon Horman
2013-03-13 17:30 ` [PATCH 07/13] kexec: ia64: " Zhang Yanfei
2013-03-14  9:50   ` Simon Horman
2013-03-13 17:31 ` [PATCH 08/13] kexec: mips: " Zhang Yanfei
2013-03-14  9:51   ` Simon Horman
2013-03-13 17:32 ` [PATCH 09/13] kexec: ppc: " Zhang Yanfei
2013-03-14  9:09   ` Simon Horman
2013-03-14  9:32     ` Zhang Yanfei
2013-03-14  9:33   ` [PATCH v2 " Zhang Yanfei
2013-03-14  9:54     ` Simon Horman
2013-03-14  9:57       ` Simon Horman
2013-03-14 10:01         ` Simon Horman
2013-03-13 17:33 ` [PATCH 10/13] kexec: ppc64: " Zhang Yanfei
2013-03-14  9:23   ` Simon Horman
2013-03-14  9:38   ` [PATCH v2 " Zhang Yanfei
2013-03-14 10:04     ` Simon Horman
2013-03-13 17:33 ` [PATCH 11/13] kexec: s390: remove ALIGN_UP and use _ALIGN_UP Zhang Yanfei
2013-03-14 10:02   ` Simon Horman
2013-03-13 17:34 ` [PATCH 12/13] kexec: sh: use _ALIGN* to make the logic clear Zhang Yanfei
2013-03-14 10:03   ` Simon Horman
2013-03-13 17:35 ` [PATCH 13/13] kexec: x86_64: " Zhang Yanfei
2013-03-14 10:03   ` Simon Horman
2013-03-14  9:47 ` [PATCH 01/13] kexec: add _ALIGN* marcos for align operation Simon Horman

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