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Message-Id: <20230925074426.97856-4-xueshuai@linux.alibaba.com> Date: Mon, 25 Sep 2023 15:44:20 +0800 From: Shuai Xue <xueshuai@...ux.alibaba.com> To: keescook@...omium.org, tony.luck@...el.com, gpiccoli@...lia.com, rafael@...nel.org, lenb@...nel.org, james.morse@....com, bp@...en8.de, tglx@...utronix.de, mingo@...hat.com, dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com, ardb@...nel.org, robert.moore@...el.com Cc: linux-hardening@...r.kernel.org, linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org, linux-edac@...r.kernel.org, linux-efi@...r.kernel.org, acpica-devel@...ts.linuxfoundation.org, xueshuai@...ux.alibaba.com, baolin.wang@...ux.alibaba.com Subject: [RFC PATCH v2 3/9] ACPI: APEI: ERST: Emit the mce_record tracepoint 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 <xueshuai@...ux.alibaba.com> --- 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 <linux/vmalloc.h> #include <linux/mm.h> /* kvfree() */ #include <acpi/apei.h> +#ifdef CONFIG_X86_MCE +/* only define CREATE_TRACE_POINTS once */ +#include <trace/events/mce.h> +#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; -- 2.41.0
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