From patchwork Wed Jul 14 12:50:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12376853 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82EA8C11F67 for ; Wed, 14 Jul 2021 12:51:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 513E2613B6 for ; Wed, 14 Jul 2021 12:51:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 513E2613B6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=glider.be Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0Fe3QYJF3bWgz6TyrDI4WSnDqHuzP59nXXdlFkV2irk=; b=eyzcwcXGhNnT83 1XYDuBIpa49nJwb7wzUfTqK+inh9bGAoiWACvjiyASjZ4a3b3DgjdFfpfuiGYM43szkPOoukzrKWV yF40uc8WHPTSQUxjh4C6sX7N90sG0RqCjGk67CZV5LXKynMceTpLUkFcsupRMe3Q0Oqhm6x82PeiP 3AB56fjzGye26ZF65321dTb/So2apQjiy1VrEDf46dXW9OC/VEtw+8SzBeH5HdxRM3iXqn7OMhVb8 jWKXuhXt1kYV+VE1Rpfq1/Eyn1S9b5uh0DCCRhESK8YVSVPMkdcyIXxpzv9EZ6HswmmkiTzmNpBNC DHmzATw2CkwoM3hCSMNA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3eMT-00Dbd4-L6; Wed, 14 Jul 2021 12:51:37 +0000 Received: from baptiste.telenet-ops.be ([2a02:1800:120:4::f00:13]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3eLl-00DbGP-2S for linux-riscv@lists.infradead.org; Wed, 14 Jul 2021 12:50:56 +0000 Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed10:39cc:190a:2775:cfe7]) by baptiste.telenet-ops.be with bizsmtp id V0qW250091ccfby010qWMs; Wed, 14 Jul 2021 14:50:49 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1m3eLO-0018dM-L3; Wed, 14 Jul 2021 14:50:30 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1m3eLN-00AaDr-NA; Wed, 14 Jul 2021 14:50:29 +0200 From: Geert Uytterhoeven To: Rob Herring , Russell King , Nicolas Pitre , Ard Biesheuvel , Linus Walleij , Catalin Marinas , Will Deacon , Nick Kossifidis , Paul Walmsley , Palmer Dabbelt , Albert Ou , Frank Rowand , Dave Young , Mike Rapoport Cc: Baoquan He , Vivek Goyal , Andrew Morton , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, kexec@lists.infradead.org, linux-mm@kvack.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v4 01/10] crash_dump: Make elfcorehdr_{addr, size} always visible Date: Wed, 14 Jul 2021 14:50:11 +0200 Message-Id: <0721f629d5e75b7b7e655458a63cbd767baaa409.1626266516.git.geert+renesas@glider.be> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210714_055053_384246_08AAF895 X-CRM114-Status: GOOD ( 10.49 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Make the forward declarations of elfcorehdr_addr and elfcorehdr_size always available, like is done for phys_initrd_start and phys_initrd_size. Code referring to these symbols can then just check for IS_ENABLED(CONFIG_CRASH_DUMP), instead of requiring conditional compilation using an #ifdef, thus preparing to increase compile coverage. Suggested-by: Rob Herring Signed-off-by: Geert Uytterhoeven --- v4: - New. --- include/linux/crash_dump.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h index a5192b718dbe4f9a..ad31893d13d634de 100644 --- a/include/linux/crash_dump.h +++ b/include/linux/crash_dump.h @@ -10,13 +10,14 @@ #include /* for pgprot_t */ +/* For IS_ENABLED(CONFIG_CRASH_DUMP) */ +extern unsigned long long elfcorehdr_addr; +extern unsigned long long elfcorehdr_size; + #ifdef CONFIG_CRASH_DUMP #define ELFCORE_ADDR_MAX (-1ULL) #define ELFCORE_ADDR_ERR (-2ULL) -extern unsigned long long elfcorehdr_addr; -extern unsigned long long elfcorehdr_size; - extern int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size); extern void elfcorehdr_free(unsigned long long addr); extern ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos);