From patchwork Mon Sep 25 07:44:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuai Xue X-Patchwork-Id: 726229 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F9BCCE7A81 for ; Mon, 25 Sep 2023 07:44:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232490AbjIYHox (ORCPT ); Mon, 25 Sep 2023 03:44:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232466AbjIYHov (ORCPT ); Mon, 25 Sep 2023 03:44:51 -0400 Received: from out30-110.freemail.mail.aliyun.com (out30-110.freemail.mail.aliyun.com [115.124.30.110]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 90CB2DA; Mon, 25 Sep 2023 00:44:42 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R831e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=ay29a033018045168; MF=xueshuai@linux.alibaba.com; NM=1; PH=DS; RN=22; SR=0; TI=SMTPD_---0Vsmvt-0_1695627876; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0Vsmvt-0_1695627876) by smtp.aliyun-inc.com; Mon, 25 Sep 2023 15:44:37 +0800 From: Shuai Xue To: keescook@chromium.org, tony.luck@intel.com, gpiccoli@igalia.com, rafael@kernel.org, lenb@kernel.org, james.morse@arm.com, bp@alien8.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, ardb@kernel.org, robert.moore@intel.com Cc: linux-hardening@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-efi@vger.kernel.org, acpica-devel@lists.linuxfoundation.org, xueshuai@linux.alibaba.com, baolin.wang@linux.alibaba.com Subject: [RFC PATCH v2 3/9] ACPI: APEI: ERST: Emit the mce_record tracepoint Date: Mon, 25 Sep 2023 15:44:20 +0800 Message-Id: <20230925074426.97856-4-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230925074426.97856-1-xueshuai@linux.alibaba.com> References: <20230925074426.97856-1-xueshuai@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org After /dev/mcelog character device deprecated by commit 5de97c9f6d85 ("x86/mce: Factor out and deprecate the /dev/mcelog driver"), the serialized hardware error log, a.k.a MCE record, of previous boot in persistent storage is not collected via APEI ERST. Emit the mce_record tracepoint so that it can consumed by the new generation rasdaemon. Signed-off-by: Shuai Xue --- drivers/acpi/apei/erst.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index 528ac5eb4871..82f57aaf89ad 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -26,6 +26,10 @@ #include #include /* kvfree() */ #include +#ifdef CONFIG_X86_MCE +/* only define CREATE_TRACE_POINTS once */ +#include +#endif #include "apei-internal.h" @@ -1063,8 +1067,12 @@ static ssize_t erst_reader(struct pstore_record *record) record->compressed = true; } else if (guid_equal(&rcd->sec_hdr.section_type, &CPER_SECTION_TYPE_DMESG)) record->type = PSTORE_TYPE_DMESG; - else if (guid_equal(&rcd->sec_hdr.section_type, &CPER_SECTION_TYPE_MCE)) + else if (guid_equal(&rcd->sec_hdr.section_type, &CPER_SECTION_TYPE_MCE)) { +#ifdef CONFIG_X86_MCE + trace_mce_record((struct mce *)rcd->data); +#endif record->type = PSTORE_TYPE_MCE; + } else record->type = PSTORE_TYPE_MAX;