From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 55BA16B0026 for ; Tue, 17 May 2011 17:38:09 -0400 (EDT) Received: (from localhost user: 'dkiper' uid#4000 fake: STDIN (dkiper@router-fw.net-space.pl)) by router-fw-old.local.net-space.pl id S1543901Ab1EQVhu (ORCPT ); Tue, 17 May 2011 23:37:50 +0200 Date: Tue, 17 May 2011 23:37:50 +0200 From: Daniel Kiper Subject: [PATCH V3 1/2] mm: Add SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macro Message-ID: <20110517213750.GB30232@router-fw-old.local.net-space.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: To: ian.campbell@citrix.com, akpm@linux-foundation.org, andi.kleen@intel.com, haicheng.li@linux.intel.com, fengguang.wu@intel.com, jeremy@goop.org, konrad.wilk@oracle.com, dan.magenheimer@oracle.com, v.tolstov@selfip.ru, pasik@iki.fi, dave@linux.vnet.ibm.com, wdauchy@gmail.com, rientjes@google.com, xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org 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 Reviewed-by: Konrad Rzeszutek Wilk --- 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 d715200..217bcf6 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -956,6 +956,9 @@ 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) + struct page; struct page_cgroup; struct mem_section { -- 1.5.6.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org