Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759168AbZFXAF6 (ORCPT ); Tue, 23 Jun 2009 20:05:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755821AbZFXAFv (ORCPT ); Tue, 23 Jun 2009 20:05:51 -0400 Received: from BISCAYNE-ONE-STATION.MIT.EDU ([18.7.7.80]:44404 "EHLO biscayne-one-station.mit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753770AbZFXAFu (ORCPT ); Tue, 23 Jun 2009 20:05:50 -0400 From: Tim Abbott To: Linux kernel mailing list Cc: Sam Ravnborg , devel@ksplice.com, Denys Vlasenko , Tim Abbott Subject: [PATCH 1/2] Add new macros for page-aligned data and bss sections. Date: Tue, 23 Jun 2009 19:59:35 -0400 Message-Id: <1245801576-13374-1-git-send-email-tabbott@ksplice.com> X-Mailer: git-send-email 1.6.3.1 In-Reply-To: <1245801452-13222-1-git-send-email-tabbott@ksplice.com> References: <1245801452-13222-1-git-send-email-tabbott@ksplice.com> X-Spam-Flag: NO X-Spam-Score: 0.00 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1650 Lines: 45 This patch is preparation for replacing most uses of ".bss.page_aligned" and ".data.page_aligned" in the kernel with macros, so that the section name can later be changed without having to touch a lot of the kernel. The long-term goal here is to be able to change the kernel's magic section names to those that are compatible with -ffunction-sections -fdata-sections. This requires renaming all magic sections with names of the form ".data.foo". Signed-off-by: Tim Abbott Cc: Sam Ravnborg Acked-by: David Howells --- include/linux/linkage.h | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/include/linux/linkage.h b/include/linux/linkage.h index fee9e59..691f591 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h @@ -22,6 +22,15 @@ #define __page_aligned_bss __section(.bss.page_aligned) __aligned(PAGE_SIZE) /* + * For assembly routines. + * + * Note when using these that you must specify the appropriate + * alignment directives yourself + */ +#define __PAGE_ALIGNED_DATA .section ".data.page_aligned", "aw" +#define __PAGE_ALIGNED_BSS .section ".bss.page_aligned", "aw" + +/* * This is used by architectures to keep arguments on the stack * untouched by the compiler by keeping them live until the end. * The argument stack may be owned by the assembly-language -- 1.6.3.1 -- 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/