From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754344Ab0CGCQc (ORCPT ); Sat, 6 Mar 2010 21:16:32 -0500 Received: from hera.kernel.org ([140.211.167.34]:57170 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754123Ab0CGCQa (ORCPT ); Sat, 6 Mar 2010 21:16:30 -0500 Message-ID: <4B930C24.3030400@kernel.org> Date: Sat, 06 Mar 2010 18:15:00 -0800 From: Yinghai Lu User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091130 SUSE/3.0.0-1.1.1 Thunderbird/3.0 MIME-Version: 1.0 To: Andrew Morton , Jiri Slaby , "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , Linus Torvalds , Christoph Lameter CC: Greg Thelen , Johannes Weiner , "linux-kernel@vger.kernel.org" Subject: [PATCH] sparsemem: on no vmemmap path put mem_map on node high too References: <49b004811003041321g2567bac8yb73235be32a27e7c@mail.gmail.com> <20100305032106.GA12065@cmpxchg.org> <49b004811003042117n720f356h7e10997a1a783475@mail.gmail.com> <4B915074.4020704@kernel.org> <4B916BD6.8010701@kernel.org> <4B91EBC6.6080509@kernel.org> <20100306162234.e2cc84fb.akpm@linux-foundation.org> <4B92F65A.5060305@kernel.org> <4B92F91A.5040607@kernel.org> In-Reply-To: <4B92F91A.5040607@kernel.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org we need to put mem_map high when virtual memmap is not used. before this patch free mem pfn range on first node: [ 0.000000] 19 - 1f [ 0.000000] 28 40 - 80 95 [ 0.000000] 702 740 - 1000 1000 [ 0.000000] 347c - 347e [ 0.000000] 34e7 3500 - 3b80 3b8b [ 0.000000] 73b8b 73bc0 - 73c00 73c00 [ 0.000000] 73ddd - 73e00 [ 0.000000] 73fdd - 74000 [ 0.000000] 741dd - 74200 [ 0.000000] 743dd - 74400 [ 0.000000] 745dd - 74600 [ 0.000000] 747dd - 74800 [ 0.000000] 749dd - 74a00 [ 0.000000] 74bdd - 74c00 [ 0.000000] 74ddd - 74e00 [ 0.000000] 74fdd - 75000 [ 0.000000] 751dd - 75200 [ 0.000000] 753dd - 75400 [ 0.000000] 755dd - 75600 [ 0.000000] 757dd - 75800 [ 0.000000] 759dd - 75a00 [ 0.000000] 79bdd 79c00 - 7d540 7d550 [ 0.000000] 7f745 - 7f750 [ 0.000000] 10000b 100040 - 2080000 2080000 so only 79c00 - 7d540 are major free block under 4g... after this patch, we will get [ 0.000000] 19 - 1f [ 0.000000] 28 40 - 80 95 [ 0.000000] 702 740 - 1000 1000 [ 0.000000] 347c - 347e [ 0.000000] 34e7 3500 - 3600 3600 [ 0.000000] 37dd - 3800 [ 0.000000] 39dd - 3a00 [ 0.000000] 3bdd - 3c00 [ 0.000000] 3ddd - 3e00 [ 0.000000] 3fdd - 4000 [ 0.000000] 41dd - 4200 [ 0.000000] 43dd - 4400 [ 0.000000] 45dd - 4600 [ 0.000000] 47dd - 4800 [ 0.000000] 49dd - 4a00 [ 0.000000] 4bdd - 4c00 [ 0.000000] 4ddd - 4e00 [ 0.000000] 4fdd - 5000 [ 0.000000] 51dd - 5200 [ 0.000000] 53dd - 5400 [ 0.000000] 95dd 9600 - 7d540 7d550 [ 0.000000] 7f745 - 7f750 [ 0.000000] 17000b 170040 - 2080000 2080000 we will have 9600 - 7d540 for major free block... sparse-vmemmap path already used __alloc_bootmem_node_high() Signed-off-by: Yinghai Lu --- mm/sparse.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) Index: linux-2.6/mm/sparse.c =================================================================== --- linux-2.6.orig/mm/sparse.c +++ linux-2.6/mm/sparse.c @@ -381,13 +381,15 @@ static void __init sparse_early_usemaps_ struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid) { struct page *map; + unsigned long size; map = alloc_remap(nid, sizeof(struct page) * PAGES_PER_SECTION); if (map) return map; - map = alloc_bootmem_pages_node(NODE_DATA(nid), - PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION)); + size = PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION); + map = __alloc_bootmem_node_high(NODE_DATA(nid), size, + PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); return map; } void __init sparse_mem_maps_populate_node(struct page **map_map, @@ -411,7 +413,8 @@ void __init sparse_mem_maps_populate_nod } size = PAGE_ALIGN(size); - map = alloc_bootmem_pages_node(NODE_DATA(nodeid), size * map_count); + map = __alloc_bootmem_node_high(NODE_DATA(nodeid), size * map_count, + PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); if (map) { for (pnum = pnum_begin; pnum < pnum_end; pnum++) { if (!present_section_nr(pnum))