From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m6.gw.fujitsu.co.jp ([10.0.50.76]) by fgwmail6.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id k28Df5wb013659 for ; Wed, 8 Mar 2006 22:41:05 +0900 (envelope-from y-goto@jp.fujitsu.com) Received: from s13.gw.fujitsu.co.jp by m6.gw.fujitsu.co.jp (8.12.10/Fujitsu Domain Master) id k28Df4Js027057 for ; Wed, 8 Mar 2006 22:41:04 +0900 (envelope-from y-goto@jp.fujitsu.com) Received: from s13.gw.fujitsu.co.jp (s13 [127.0.0.1]) by s13.gw.fujitsu.co.jp (Postfix) with ESMTP id 988441CC101 for ; Wed, 8 Mar 2006 22:41:04 +0900 (JST) Received: from ml8.s.css.fujitsu.com (ml8.s.css.fujitsu.com [10.23.4.198]) by s13.gw.fujitsu.co.jp (Postfix) with ESMTP id C55EC1CC0BD for ; Wed, 8 Mar 2006 22:41:03 +0900 (JST) Date: Wed, 08 Mar 2006 22:41:03 +0900 From: Yasunori Goto Subject: [PATCH: 000/017] (RFC)Memory hotplug for new nodes v.3. Message-Id: <20060308212316.0022.Y-GOTO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: "Luck, Tony" , Andi Kleen , Joel Schopp , Dave Hansen Cc: Linux Kernel ML , linux-mm , linux-ia64@vger.kernel.org, Andrew Morton List-ID: Hello. I'll post newest patches for memory hotadd with pgdat allocation as V3. There are many changes to make more common code. This may be too many patches, but I would like to show total feature of this code now. This patches are for 2.6.16-rc5-mm3. I tested these patch on just Tiger4(ia64) with emulation now. But, I'll test them for x86-64 too after this post. Please comment. --------------------------------------- This is memory hotadd code when new node is added. In this patch, pgdat is allocated when new node is comming. To initialize pgdat and zones, a set of patches are necessary. - to allcate and initialize pgdat, zone, zonelist. - to make new kswapd - to initialize node_data[] array (ia64) - to register sysfs file for new node. - to call memory_hotplug code from acpi container driver. Note: - kzalloc is used for pgdat allocation in this version. So, even if pgdat is allocated, it will be allocated on the other node. This is only to simplify patches a bit. :-P ----------------------------- Followings are updates. Updates from V2 to V3. - update for 2.6.16-rc5-mm3. - The caller function of pgdat allcation and so on become common code. - Passing node id at add_memory(). - build_zonelists() is called after that pages are onlined. - Updating NODE_DATA() for ia64 become simple and become common code between booting and hotadd. (But other consideration will be necessary for hot-remove.) - kswapd is called by kthread_run(). - finding node id by acpi use handle of its memory device. - Updates from V1 to V2. - update for 2.6.16-rc5-mm2. - not only ia64, This is tested on x86_64 with NUMA emulation too. :-) - wait_table_size() allcation is changed. - Take max size as much as possible. - Change using GFP_ATOMIC. It is inside of zone_init_lock. (Warining message of might_sleep() is very well.) - stop_machine_run(build_zonelists) is move to outside of lock. - pgdat_insert() is moved to generic code to be used by x86_64. - add decision of ZONE_DMA32 or ZONE_NORMAL to x86_64's add_memory(). - Make a separated patch to change from __init to __meminit. - Fix some typo -- Yasunori Goto -- 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/ . Don't email: email@kvack.org