Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966480AbXJSOwa (ORCPT ); Fri, 19 Oct 2007 10:52:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964999AbXJSOwW (ORCPT ); Fri, 19 Oct 2007 10:52:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:51552 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964798AbXJSOwW (ORCPT ); Fri, 19 Oct 2007 10:52:22 -0400 Date: Fri, 19 Oct 2007 16:52:20 +0200 From: Bernhard Walle To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, linuxsh-dev@lists.sourceforge.net, kexec@lists.infradead.org Subject: [PATCH] Use BOOTMEM_EXCLUSIVE for crashkernel reservation Message-ID: <20071019145220.GA14691@suse.de> Mail-Followup-To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linuxsh-dev@lists.sourceforge.net, kexec@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Organization: SUSE LINUX Products GmbH User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1970 Lines: 59 This patch implements the usage of BOOTMEM_EXCLUSIVE for crashkernel reservation on other architectures. The only architecture that applies is sh. The patch is based on current git tree plus kexec-introduce-bootmem_exclusive.patch from -mm tree. Signed-off-by: Bernhard Walle --- arch/sh/kernel/setup.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -140,19 +140,26 @@ static void __init reserve_crashkernel(v ret = parse_crashkernel(boot_command_line, free_mem, &crash_size, &crash_base); if (ret == 0 && crash_size) { - if (crash_base > 0) { - printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " - "for crashkernel (System RAM: %ldMB)\n", - (unsigned long)(crash_size >> 20), - (unsigned long)(crash_base >> 20), - (unsigned long)(free_mem >> 20)); - crashk_res.start = crash_base; - crashk_res.end = crash_base + crash_size - 1; - reserve_bootmem(crash_base, crash_size, - BOOTMEM_DEFAULT); - } else + if (crash_base <= 0) { printk(KERN_INFO "crashkernel reservation failed - " "you have to specify a base address\n"); + return; + } + + if (reserve_bootmem(crash_base, crash_size, + BOOTMEM_EXCLUSIVE) < 0) { + printk(KERN_INFO "crashkernel reservation failed - " + "memory is in use\n"); + return; + } + + printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " + "for crashkernel (System RAM: %ldMB)\n", + (unsigned long)(crash_size >> 20), + (unsigned long)(crash_base >> 20), + (unsigned long)(free_mem >> 20)); + crashk_res.start = crash_base; + crashk_res.end = crash_base + crash_size - 1; } } #else - 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/