From patchwork Fri Jun 22 19:49:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Agustin Vega-Frias X-Patchwork-Id: 10482959 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 680DE602CB for ; Fri, 22 Jun 2018 19:49:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 564D128FD4 for ; Fri, 22 Jun 2018 19:49:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4B17329001; Fri, 22 Jun 2018 19:49:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EDE3228FD4 for ; Fri, 22 Jun 2018 19:49:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934723AbeFVTtV (ORCPT ); Fri, 22 Jun 2018 15:49:21 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:33484 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934399AbeFVTtS (ORCPT ); Fri, 22 Jun 2018 15:49:18 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B878E60B15; Fri, 22 Jun 2018 19:49:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1529696957; bh=4YH7zUXB9uysXF1AY0kEzc8hBNIgUA2yk1xRvlkTZf4=; h=From:To:Cc:Subject:Date:From; b=RNLqPVZsF+uKXE3be75c9X77+ApdSjDAXZcrIRceWBfIx6xMi/MVyeBRHpMJBoqZn 1KaTKIVtFYZyk1ybHcSHY7FjevBWEayG34VlYJ4B6JgpcykbhGotq7eqiECdkB0Yrf 8m9zQXNXVQzO/TCqX5JB7e4efHKQ5reEL7FuuBDw= Received: from azshara.qualcomm.com (global_nat1_iad_fw.qualcomm.com [129.46.232.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: agustinv@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id BC89660AD8; Fri, 22 Jun 2018 19:49:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1529696957; bh=4YH7zUXB9uysXF1AY0kEzc8hBNIgUA2yk1xRvlkTZf4=; h=From:To:Cc:Subject:Date:From; b=RNLqPVZsF+uKXE3be75c9X77+ApdSjDAXZcrIRceWBfIx6xMi/MVyeBRHpMJBoqZn 1KaTKIVtFYZyk1ybHcSHY7FjevBWEayG34VlYJ4B6JgpcykbhGotq7eqiECdkB0Yrf 8m9zQXNXVQzO/TCqX5JB7e4efHKQ5reEL7FuuBDw= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BC89660AD8 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=agustinv@codeaurora.org From: Agustin Vega-Frias To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, Will Deacon , Mark Rutland , Jeremy Linton , Catalin Marinas , Marc Zyngier , Lorenzo Pieralisi , "Rafael J. Wysocki" Cc: timur@codeaurora.org, agustinv@codeaurora.org Subject: [RFC V3 1/3] ACPI: add support for sentinel-delimited probe tables Date: Fri, 22 Jun 2018 15:49:06 -0400 Message-Id: <1529696948-16991-1-git-send-email-agustinv@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Tables declared with the ACPI_PROBE_TABLE linker macro are typically traversed by using the start and end symbols created by the linker script. However, there are some APIs that use sentinel-delimited tables (e.g. acpi_match_device). To better support these APIs an additional section is added at the end of the probe table. This section can be used to add a sentinel for tables that require it. Signed-off-by: Agustin Vega-Frias --- include/asm-generic/vmlinux.lds.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index af24057..5894049 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -219,7 +219,8 @@ . = ALIGN(8); \ VMLINUX_SYMBOL(__##name##_acpi_probe_table) = .; \ KEEP(*(__##name##_acpi_probe_table)) \ - VMLINUX_SYMBOL(__##name##_acpi_probe_table_end) = .; + VMLINUX_SYMBOL(__##name##_acpi_probe_table_end) = .; \ + KEEP(*(__##name##_acpi_probe_table_end)) #else #define ACPI_PROBE_TABLE(name) #endif