From patchwork Thu May 15 08:30:44 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Gong X-Patchwork-Id: 4180081 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0DC3E9F387 for ; Thu, 15 May 2014 09:03:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1211E20383 for ; Thu, 15 May 2014 09:03:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ECCC820379 for ; Thu, 15 May 2014 09:03:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750916AbaEOJDp (ORCPT ); Thu, 15 May 2014 05:03:45 -0400 Received: from mga02.intel.com ([134.134.136.20]:7844 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750702AbaEOJDn (ORCPT ); Thu, 15 May 2014 05:03:43 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 15 May 2014 02:03:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,1057,1389772800"; d="scan'208";a="540818260" Received: from gchen-sby.bj.intel.com (HELO localhost) ([10.238.158.82]) by orsmga002.jf.intel.com with ESMTP; 15 May 2014 02:02:06 -0700 From: "Chen, Gong" To: tony.luck@intel.com, bp@alien8.de, m.chehab@samsung.com Cc: linux-acpi@vger.kernel.org, "Chen, Gong" Subject: [PATCH 5/7 v5] trace, RAS: Add eMCA trace event interface Date: Thu, 15 May 2014 04:30:44 -0400 Message-Id: <1400142646-10127-6-git-send-email-gong.chen@linux.intel.com> X-Mailer: git-send-email 2.0.0.rc0 In-Reply-To: <1400142646-10127-1-git-send-email-gong.chen@linux.intel.com> References: <1400142646-10127-1-git-send-email-gong.chen@linux.intel.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add trace interface to elaborate all H/W error related information. v5 -> v4: Add physical mask(LSB) in trace. v4 -> v3: change ras trace dependency rule. v3 -> v2: minor adjustment according to the suggestion from Boris. v2 -> v1: spinlock is not needed anymore. Signed-off-by: Chen, Gong --- drivers/acpi/Kconfig | 4 +++- drivers/acpi/acpi_extlog.c | 58 +++++++++++++++++++++++++++++++++++++++++++--- drivers/ras/ras.c | 1 + include/ras/ras_event.h | 57 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 116 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index ab686b3..5af6013 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -353,6 +353,7 @@ config ACPI_EXTLOG tristate "Extended Error Log support" depends on X86_MCE && X86_LOCAL_APIC select UEFI_CPER + select RAS_TRACE default n help Certain usages such as Predictive Failure Analysis (PFA) require @@ -367,6 +368,7 @@ config ACPI_EXTLOG Enhanced MCA Logging allows firmware to provide additional error information to system software, synchronous with MCE or CMCI. This - driver adds support for that functionality. + driver adds support for that functionality with corresponding + tracepoint which carries that information to userspace. endif # ACPI diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c index c4a5d87..b1dcb5b 100644 --- a/drivers/acpi/acpi_extlog.c +++ b/drivers/acpi/acpi_extlog.c @@ -16,6 +16,7 @@ #include #include "apei/apei-internal.h" +#include #define EXT_ELOG_ENTRY_MASK GENMASK_ULL(51, 0) /* elog entry address mask */ @@ -43,6 +44,9 @@ struct extlog_l1_head { static int old_edac_report_status; +static char mem_location[CPER_REC_LEN]; +static char dimm_location[CPER_REC_LEN]; + static u8 extlog_dsm_uuid[] __initdata = "663E35AF-CC10-41A4-88EA-5470AF055295"; /* L1 table related physical address */ @@ -69,6 +73,34 @@ static u32 l1_percpu_entry; #define ELOG_ENTRY_ADDR(phyaddr) \ (phyaddr - elog_base + (u8 *)elog_addr) +static void __trace_mem_error(const uuid_le *fru_id, char *fru_text, + u64 err_count, u32 severity, + struct cper_sec_mem_err *mem) +{ + u32 etype = ~0U; + char pa_info[64]; + u8 n = 0; + + if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) + etype = mem->error_type; + + memset(pa_info, 0, 64); + if (mem->validation_bits & CPER_MEM_VALID_PA) + n = snprintf(pa_info, 63, "physical addr: 0x%016llx ", + mem->physical_addr); + + if (mem->validation_bits & CPER_MEM_VALID_PA_MASK) + snprintf(pa_info + n, 63 - n, "addr LSB: 0x%x ", + (u8)__ffs64(mem->physical_addr_mask)); + + memset(mem_location, 0, CPER_REC_LEN); + cper_mem_err_location(mem, mem_location); + memset(dimm_location, 0, CPER_REC_LEN); + cper_dimm_err_location(mem, dimm_location); + trace_extlog_mem_event(etype, fru_id, err_count, severity, + dimm_location, pa_info, mem_location, fru_text); +} + static struct acpi_generic_status *extlog_elog_entry_check(int cpu, int bank) { int idx; @@ -137,8 +169,12 @@ static int extlog_print(struct notifier_block *nb, unsigned long val, struct mce *mce = (struct mce *)data; int bank = mce->bank; int cpu = mce->extcpu; - struct acpi_generic_status *estatus; - int rc; + struct acpi_generic_status *estatus, *tmp; + struct acpi_generic_data *gdata; + const uuid_le *fru_id = &NULL_UUID_LE; + char *fru_text = ""; + uuid_le *sec_type; + static u64 err_count; estatus = extlog_elog_entry_check(cpu, bank); if (estatus == NULL) @@ -148,7 +184,23 @@ static int extlog_print(struct notifier_block *nb, unsigned long val, /* clear record status to enable BIOS to update it again */ estatus->block_status = 0; - rc = print_extlog_rcd(NULL, (struct acpi_generic_status *)elog_buf, cpu); + tmp = (struct acpi_generic_status *)elog_buf; + print_extlog_rcd(NULL, tmp, cpu); + + /* log event via trace */ + err_count++; + gdata = (struct acpi_generic_data *)(tmp + 1); + if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID) + fru_id = (uuid_le *)gdata->fru_id; + if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT) + fru_text = gdata->fru_text; + sec_type = (uuid_le *)gdata->section_type; + if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) { + struct cper_sec_mem_err *mem_err = (void *)(gdata + 1); + if (gdata->error_data_length >= sizeof(*mem_err)) + __trace_mem_error(fru_id, fru_text, err_count, + gdata->error_severity, mem_err); + } return NOTIFY_STOP; } diff --git a/drivers/ras/ras.c b/drivers/ras/ras.c index 4cac43a..da227a3 100644 --- a/drivers/ras/ras.c +++ b/drivers/ras/ras.c @@ -23,4 +23,5 @@ static int __init ras_init(void) } subsys_initcall(ras_init); +EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event); EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event); diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h index acbcbb8..ac6e6d1 100644 --- a/include/ras/ras_event.h +++ b/include/ras/ras_event.h @@ -9,6 +9,63 @@ #include #include #include +#include + + +/* + * MCE Extended Error Log trace event + * + * These events are generated when hardware detects a corrected or + * uncorrected event. + * + */ + +/* memory trace event */ + +TRACE_EVENT(extlog_mem_event, + TP_PROTO(u32 etype, + const uuid_le *fru_id, + u64 error_count, + u32 severity, + char *dimm_info, + char *pa_info, + char *mem_loc, + char *fru_text), + + TP_ARGS(etype, fru_id, error_count, severity, dimm_info, pa_info, + mem_loc, fru_text), + + TP_STRUCT__entry( + __field(u32, etype) + __field(u64, error_count) + __field(u32, severity) + __string(dimm_info, dimm_info) + __string(pa_info, pa_info) + __string(mem_loc, mem_loc) + __dynamic_array(char, fru, CPER_REC_LEN) + ), + + TP_fast_assign( + __entry->error_count = error_count; + __entry->severity = severity; + __entry->etype = etype; + __assign_str(dimm_info, dimm_info); + __assign_str(pa_info, pa_info); + __assign_str(mem_loc, mem_loc); + snprintf(__get_dynamic_array(fru), CPER_REC_LEN - 1, + "FRU: %pUl %.20s", fru_id, fru_text); + ), + + TP_printk("%llu %s error%s: %s %s%s%s%s", + __entry->error_count, + cper_severity_str(__entry->severity), + __entry->error_count > 1 ? "s" : "", + cper_mem_err_type_str(__entry->etype), + __get_str(dimm_info), + __get_str(pa_info), + __get_str(mem_loc), + __get_str(fru)) +); /* * Hardware Events Report