From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yinghai Lu Subject: [PATCH 41/50] memblock: Add find_memory_core_early() Date: Tue, 13 Jul 2010 00:10:35 -0700 Message-ID: <1279005044-24777-42-git-send-email-yinghai@kernel.org> References: <1279005044-24777-1-git-send-email-yinghai@kernel.org> Return-path: In-Reply-To: <1279005044-24777-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Andrew Morton , David Miller , Be Cc: Linus Torvalds , Johannes Weiner , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Yinghai Lu List-Id: linux-arch.vger.kernel.org According to node range in early_node_map[] with __memblock_find_in_range to find free range. Will be used by memblock_x86_find_in_range_node() memblock_x86_find_in_range_node will be used to find right buffer for NODE_DATA Signed-off-by: Yinghai Lu --- include/linux/mm.h | 2 ++ mm/page_alloc.c | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+), 0 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index b969efb..f493d29 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1164,6 +1164,8 @@ extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); int add_from_early_node_map(struct range *range, int az, int nr_range, int nid); +u64 __init find_memory_core_early(int nid, u64 size, u64 align, + u64 goal, u64 limit); void *__alloc_memory_core_early(int nodeid, u64 size, u64 align, u64 goal, u64 limit); typedef int (*work_fn_t)(unsigned long, unsigned long, void *); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index cee2d79..cd4f66d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -3612,6 +3613,41 @@ void __init free_bootmem_with_active_regions(int nid, } } +#ifdef CONFIG_HAVE_MEMBLOCK +u64 __init find_memory_core_early(int nid, u64 size, u64 align, + u64 goal, u64 limit) +{ + int i; + + /* Need to go over early_node_map to find out good range for node */ + for_each_active_range_index_in_nid(i, nid) { + u64 addr; + u64 ei_start, ei_last; + u64 final_start, final_end; + + ei_last = early_node_map[i].end_pfn; + ei_last <<= PAGE_SHIFT; + ei_start = early_node_map[i].start_pfn; + ei_start <<= PAGE_SHIFT; + + final_start = max(ei_start, goal); + final_end = min(ei_last, limit); + + if (final_start >= final_end) + continue; + + addr = memblock_find_in_range(final_start, final_end, size, align); + + if (addr == MEMBLOCK_ERROR) + continue; + + return addr; + } + + return MEMBLOCK_ERROR; +} +#endif + int __init add_from_early_node_map(struct range *range, int az, int nr_range, int nid) { -- 1.6.4.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rcsinet10.oracle.com ([148.87.113.121]:29179 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754425Ab0GMHQj (ORCPT ); Tue, 13 Jul 2010 03:16:39 -0400 From: Yinghai Lu Subject: [PATCH 41/50] memblock: Add find_memory_core_early() Date: Tue, 13 Jul 2010 00:10:35 -0700 Message-ID: <1279005044-24777-42-git-send-email-yinghai@kernel.org> In-Reply-To: <1279005044-24777-1-git-send-email-yinghai@kernel.org> References: <1279005044-24777-1-git-send-email-yinghai@kernel.org> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Andrew Morton , David Miller , Benjamin Herrenschmidt Cc: Linus Torvalds , Johannes Weiner , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Yinghai Lu Message-ID: <20100713071035.7Lj6rmWPaww8BwIS6yJhPvUbmwwN7KC38UQATZHf2-4@z> According to node range in early_node_map[] with __memblock_find_in_range to find free range. Will be used by memblock_x86_find_in_range_node() memblock_x86_find_in_range_node will be used to find right buffer for NODE_DATA Signed-off-by: Yinghai Lu --- include/linux/mm.h | 2 ++ mm/page_alloc.c | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+), 0 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index b969efb..f493d29 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1164,6 +1164,8 @@ extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); int add_from_early_node_map(struct range *range, int az, int nr_range, int nid); +u64 __init find_memory_core_early(int nid, u64 size, u64 align, + u64 goal, u64 limit); void *__alloc_memory_core_early(int nodeid, u64 size, u64 align, u64 goal, u64 limit); typedef int (*work_fn_t)(unsigned long, unsigned long, void *); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index cee2d79..cd4f66d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -3612,6 +3613,41 @@ void __init free_bootmem_with_active_regions(int nid, } } +#ifdef CONFIG_HAVE_MEMBLOCK +u64 __init find_memory_core_early(int nid, u64 size, u64 align, + u64 goal, u64 limit) +{ + int i; + + /* Need to go over early_node_map to find out good range for node */ + for_each_active_range_index_in_nid(i, nid) { + u64 addr; + u64 ei_start, ei_last; + u64 final_start, final_end; + + ei_last = early_node_map[i].end_pfn; + ei_last <<= PAGE_SHIFT; + ei_start = early_node_map[i].start_pfn; + ei_start <<= PAGE_SHIFT; + + final_start = max(ei_start, goal); + final_end = min(ei_last, limit); + + if (final_start >= final_end) + continue; + + addr = memblock_find_in_range(final_start, final_end, size, align); + + if (addr == MEMBLOCK_ERROR) + continue; + + return addr; + } + + return MEMBLOCK_ERROR; +} +#endif + int __init add_from_early_node_map(struct range *range, int az, int nr_range, int nid) { -- 1.6.4.2