Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753319Ab0BITje (ORCPT ); Tue, 9 Feb 2010 14:39:34 -0500 Received: from sca-es-mail-2.Sun.COM ([192.18.43.133]:54630 "EHLO sca-es-mail-2.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752149Ab0BITdt (ORCPT ); Tue, 9 Feb 2010 14:33:49 -0500 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: TEXT/PLAIN Date: Tue, 09 Feb 2010 11:32:31 -0800 From: Yinghai Lu Subject: [PATCH 20/35] x86: add find_early_area_size In-reply-to: <1265743966-17065-1-git-send-email-yinghai@kernel.org> To: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Andrew Morton , Linus Torvalds Cc: Jesse Barnes , Christoph Lameter , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Yinghai Lu Message-id: <1265743966-17065-21-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.6.4.2 References: <1265743966-17065-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2025 Lines: 83 prepare to move bck find_e820_area_size back to e820.c Signed-off-by: Yinghai Lu --- arch/x86/kernel/early_res.c | 45 ++++++++++++++++++++++++++++++------------ 1 files changed, 32 insertions(+), 13 deletions(-) diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c index 3ae0051..aba02f2 100644 --- a/arch/x86/kernel/early_res.c +++ b/arch/x86/kernel/early_res.c @@ -476,6 +476,29 @@ out: return -1ULL; } +u64 __init find_early_area_size(u64 ei_start, u64 ei_last, u64 start, + u64 *sizep, u64 align) +{ + u64 addr, last; + + addr = round_up(ei_start, align); + if (addr < start) + addr = round_up(start, align); + if (addr >= ei_last) + goto out; + *sizep = ei_last - addr; + while (bad_addr_size(&addr, sizep, align) && addr + *sizep <= ei_last) + ; + last = addr + *sizep; + if (last > ei_last) + goto out; + + return addr; + +out: + return -1ULL; +} + /* * Find a free area with specified alignment in a specific range. */ @@ -513,24 +536,20 @@ u64 __init find_e820_area_size(u64 start, u64 *sizep, u64 align) for (i = 0; i < e820.nr_map; i++) { struct e820entry *ei = &e820.map[i]; - u64 addr, last; - u64 ei_last; + u64 addr; + u64 ei_start, ei_last; if (ei->type != E820_RAM) continue; - addr = round_up(ei->addr, align); + ei_last = ei->addr + ei->size; - if (addr < start) - addr = round_up(start, align); - if (addr >= ei_last) - continue; - *sizep = ei_last - addr; - while (bad_addr_size(&addr, sizep, align) && - addr + *sizep <= ei_last) - ; - last = addr + *sizep; - if (last > ei_last) + ei_start = ei->addr; + addr = find_early_area_size(ei_start, ei_last, start, + sizep, align); + + if (addr == -1ULL) continue; + return addr; } -- 1.6.4.2 -- 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/