Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755458AbYCFTNA (ORCPT ); Thu, 6 Mar 2008 14:13:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763092AbYCFTMm (ORCPT ); Thu, 6 Mar 2008 14:12:42 -0500 Received: from agminet01.oracle.com ([141.146.126.228]:15093 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755035AbYCFTMk (ORCPT ); Thu, 6 Mar 2008 14:12:40 -0500 Date: Thu, 6 Mar 2008 11:08:47 -0800 From: Randy Dunlap To: Badari Pulavarty Cc: lkml , linuxppc-dev@ozlabs.org, paulus@samba.org, Yasunori Goto , Andrew Morton Subject: Re: [PATCH 1/5] generic __remove_pages() support Message-Id: <20080306110847.11d7cb26.randy.dunlap@oracle.com> In-Reply-To: <1204829734.7939.61.camel@dyn9047017100.beaverton.ibm.com> References: <1204829673.7939.59.camel@dyn9047017100.beaverton.ibm.com> <1204829734.7939.61.camel@dyn9047017100.beaverton.ibm.com> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.4.7 (GTK+ 2.8.10; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1860 Lines: 44 On Thu, 06 Mar 2008 10:55:34 -0800 Badari Pulavarty wrote: > Generic helper function to remove section mappings and sysfs entries > for the section of the memory we are removing. offline_pages() correctly > adjusted zone and marked the pages reserved. Such generic (exported, non-static) interfaces could use some (kernel-)docs, please. > Issue: If mem_map, usemap allocation could come from different places - > kmalloc, vmalloc, alloc_pages or bootmem. There is no easy way > to find and free up bootmem allocations. > > Signed-off-by: Badari Pulavarty > > --- > include/linux/memory_hotplug.h | 4 +++ > mm/memory_hotplug.c | 44 +++++++++++++++++++++++++++++++++++++++++ > mm/sparse.c | 43 +++++++++++++++++++++++++++++++++++++--- > 3 files changed, 88 insertions(+), 3 deletions(-) > Index: linux-2.6.25-rc2/include/linux/memory_hotplug.h > =================================================================== > --- linux-2.6.25-rc2.orig/include/linux/memory_hotplug.h 2008-02-27 12:58:17.000000000 -0800 > +++ linux-2.6.25-rc2/include/linux/memory_hotplug.h 2008-02-27 13:00:04.000000000 -0800 > @@ -64,6 +65,8 @@ extern int offline_pages(unsigned long, > /* reasonably generic interface to expand the physical pages in a zone */ > extern int __add_pages(struct zone *zone, unsigned long start_pfn, > unsigned long nr_pages); > +extern int __remove_pages(struct zone *zone, unsigned long start_pfn, > + unsigned long nr_pages); > > /* > * Walk thorugh all memory which is registered as resource. through :) --- ~Randy -- 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/