From patchwork Mon Mar 13 09:00:59 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xie XiuQi X-Patchwork-Id: 9620227 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 1D19C60244 for ; Mon, 13 Mar 2017 09:06:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 087BA28383 for ; Mon, 13 Mar 2017 09:06:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F0D1028435; Mon, 13 Mar 2017 09:06:12 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI 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 DEDB92838E for ; Mon, 13 Mar 2017 09:06:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752696AbdCMJGH (ORCPT ); Mon, 13 Mar 2017 05:06:07 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:3867 "EHLO dggrg02-dlp.huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752594AbdCMJGA (ORCPT ); Mon, 13 Mar 2017 05:06:00 -0400 Received: from 172.30.72.57 (EHLO DGGEML402-HUB.china.huawei.com) ([172.30.72.57]) by dggrg02-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id AJV26380; Mon, 13 Mar 2017 17:01:26 +0800 (CST) Received: from [127.0.0.1] (10.177.19.210) by DGGEML402-HUB.china.huawei.com (10.3.17.38) with Microsoft SMTP Server id 14.3.301.0; Mon, 13 Mar 2017 17:01:12 +0800 Subject: Re: [PATCH V12 09/10] trace, ras: add ARM processor error trace event To: "Baicar, Tyler" , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , References: <1488833103-21082-1-git-send-email-tbaicar@codeaurora.org> <1488833103-21082-10-git-send-email-tbaicar@codeaurora.org> <58C12342.2090701@huawei.com> <14545228-7ff1-b31c-1fa5-daacf89a44b9@codeaurora.org> <58C60485.2070509@huawei.com> From: Xie XiuQi CC: "wangxiongfeng2@huawei.com" , Guo Hanjun , "Zhengqiang (turing)" Message-ID: <58C65FCB.3040508@huawei.com> Date: Mon, 13 Mar 2017 17:00:59 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <58C60485.2070509@huawei.com> X-Originating-IP: [10.177.19.210] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090205.58C65FEA.0075, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 81079134d73618e5e305ff9eb3a9c110 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 Hi Baicar Tyler, On 2017/3/13 10:31, Xie XiuQi wrote: > Hi Baicar Tyler, > > On 2017/3/11 2:23, Baicar, Tyler wrote: >> Hello Xie XiuQi, >> >> >> On 3/9/2017 2:41 AM, Xie XiuQi wrote: >>> On 2017/3/7 4:45, Tyler Baicar wrote: >>>> Currently there are trace events for the various RAS >>>> errors with the exception of ARM processor type errors. >>>> Add a new trace event for such errors so that the user >>>> will know when they occur. These trace events are >>>> consistent with the ARM processor error section type >>>> defined in UEFI 2.6 spec section N.2.4.4. >>>> >>>> Signed-off-by: Tyler Baicar >>>> Acked-by: Steven Rostedt >>>> --- >>>> drivers/acpi/apei/ghes.c | 8 +++++++- >>>> drivers/firmware/efi/cper.c | 1 + >>>> drivers/ras/ras.c | 1 + >>>> include/ras/ras_event.h | 34 ++++++++++++++++++++++++++++++++++ >>>> 4 files changed, 43 insertions(+), 1 deletion(-) >> >>>> diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h >>>> index 5861b6f..b36db48 100644 >>>> --- a/include/ras/ras_event.h >>>> +++ b/include/ras/ras_event.h >>>> @@ -162,6 +162,40 @@ >>>> ); >>>> /* >>>> + * ARM Processor Events Report >>>> + * >>>> + * This event is generated when hardware detects an ARM processor error >>>> + * has occurred. UEFI 2.6 spec section N.2.4.4. >>>> + */ >>>> +TRACE_EVENT(arm_event, >>>> + >>>> + TP_PROTO(const struct cper_sec_proc_arm *proc), >>>> + >>>> + TP_ARGS(proc), >>>> + >>>> + TP_STRUCT__entry( >>>> + __field(u64, mpidr) >>>> + __field(u64, midr) >>>> + __field(u32, running_state) >>>> + __field(u32, psci_state) >>>> + __field(u8, affinity) >>>> + ), >>>> + >>>> + TP_fast_assign( >>>> + __entry->affinity = proc->affinity_level; >>>> + __entry->mpidr = proc->mpidr; >>>> + __entry->midr = proc->midr; >>>> + __entry->running_state = proc->running_state; >>>> + __entry->psci_state = proc->psci_state; >>>> + ), >>>> + >>>> + TP_printk("affinity level: %d; MPIDR: %016llx; MIDR: %016llx; " >>>> + "running state: %d; PSCI state: %d", >>>> + __entry->affinity, __entry->mpidr, __entry->midr, >>>> + __entry->running_state, __entry->psci_state) >>>> +); >>>> + >>> I think these fields are not enough, we need also export arm processor error >>> information (UEFI 2.6 spec section N.2.4.4.1), or at least the error type, >>> address, etc. So that the userspace (such as rasdaemon tool) could know what >>> error occurred. >> >> This is something I am planning on adding in later. It is not clear to me how to >> actually do this at this point. If you look at the spec, there is not a single >> error information structure. There is at least one, but possibly a lot. There is >> also an unknown amount of context information structures. In "Table 260. ARM Processor >> Error Section" there are ERR_INFO_NUM and CONTEXT_INFO_NUM which give the number of these >> structures. I think there will need to be separate trace events added in for each of >> these structures because I don't think there is a way to have variable amounts of >> structures inside of a trace event. I have a patch below to add a trace event to expose arm processor error information to user space. Would you take it to your series or later series if possible. Any comments is welcome. This patch is just compile OK. I have no arm box for testing just now. Any one who can help to test it is very grateful. Thanks. From e591570eecc6cd70e18d8f8ae75534b55a22f7ba Mon Sep 17 00:00:00 2001 From: Xie XiuQi Date: Mon, 13 Mar 2017 15:46:06 +0800 Subject: [PATCH] trace: ras: add ARM processor error information trace event Add a new trace event for ARM processor error information, so that the user will know what error occurred. With this information the user may take appropriate action. These trace events are consistent with the ARM processor error information table which defined in UEFI 2.6 spec section N.2.4.4.1. Signed-off-by: Xie XiuQi --- drivers/acpi/apei/ghes.c | 8 +++++ include/linux/cper.h | 5 +++ include/ras/ras_event.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 100 insertions(+) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 251d7e0..6d34c26 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -518,9 +518,17 @@ static void ghes_do_proc(struct ghes *ghes, else if (!uuid_le_cmp(sec_type, CPER_SEC_PROC_ARM) && trace_arm_event_enabled()) { struct cper_sec_proc_arm *arm_err; + struct cper_arm_err_info *err_info; + int i; arm_err = acpi_hest_generic_data_payload(gdata); trace_arm_event(arm_err); + + err_info = (struct cper_arm_err_info *)(arm_err + 1); + for (i = 0; i < arm_err->err_info_num; i++) { + trace_arm_proc_err(err_info); + err_info += 1; + } } else if (trace_unknown_sec_event_enabled()) { void *unknown_err = acpi_hest_generic_data_payload(gdata); trace_unknown_sec_event(&sec_type, diff --git a/include/linux/cper.h b/include/linux/cper.h index 85450f3..0cae900 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -270,6 +270,11 @@ enum { #define CPER_ARM_INFO_VALID_VIRT_ADDR 0x0008 #define CPER_ARM_INFO_VALID_PHYSICAL_ADDR 0x0010 +#define CPER_ARM_INFO_TYPE_CACHE 0 +#define CPER_ARM_INFO_TYPE_TLB 1 +#define CPER_ARM_INFO_TYPE_BUS 2 +#define CPER_ARM_INFO_TYPE_UARCH 3 + #define CPER_ARM_INFO_FLAGS_FIRST 0x0001 #define CPER_ARM_INFO_FLAGS_LAST 0x0002 #define CPER_ARM_INFO_FLAGS_PROPAGATED 0x0004 diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h index b36db48..72c6a06 100644 --- a/include/ras/ras_event.h +++ b/include/ras/ras_event.h @@ -195,6 +195,93 @@ __entry->running_state, __entry->psci_state) ); +#define ARM_PROC_ERR_TYPE \ + EM ( CPER_ARM_INFO_TYPE_CACHE, "cache error" ) \ + EM ( CPER_ARM_INFO_TYPE_TLB, "TLB error" ) \ + EM ( CPER_ARM_INFO_TYPE_BUS, "bus error" ) \ + EMe ( CPER_ARM_INFO_TYPE_UARCH, "micro-architectural error" ) + +#define ARM_PROC_ERR_FLAGS \ + EM ( CPER_ARM_INFO_FLAGS_FIRST, "First error captured" ) \ + EM ( CPER_ARM_INFO_FLAGS_LAST, "Last error captured" ) \ + EM ( CPER_ARM_INFO_FLAGS_PROPAGATED, "Propagated" ) \ + EMe ( CPER_ARM_INFO_FLAGS_OVERFLOW, "Overflow" ) + +/* + * First define the enums in MM_ACTION_RESULT to be exported to userspace + * via TRACE_DEFINE_ENUM(). + */ +#undef EM +#undef EMe +#define EM(a, b) TRACE_DEFINE_ENUM(a); +#define EMe(a, b) TRACE_DEFINE_ENUM(a); + +ARM_PROC_ERR_TYPE +ARM_PROC_ERR_FLAGS + +/* + * Now redefine the EM() and EMe() macros to map the enums to the strings + * that will be printed in the output. + */ +#undef EM +#undef EMe +#define EM(a, b) { a, b }, +#define EMe(a, b) { a, b } + +TRACE_EVENT(arm_proc_error, + + TP_PROTO(const struct cper_arm_err_info *err), + + TP_ARGS(err), + + TP_STRUCT__entry( + __field(u8, type) + __field(u16, multiple_error) + __field(u8, flags) + __field(u64, error_info) + __field(u64, virt_fault_addr) + __field(u64, physical_fault_addr) + ), + + TP_fast_assign( + __entry->type = err->type; + + if (err->validation_bits & CPER_ARM_INFO_VALID_MULTI_ERR) + __entry->multiple_error = err->multiple_error; + else + __entry->multiple_error = ~0; + + if (err->validation_bits & CPER_ARM_INFO_VALID_FLAGS) + __entry->flags = err->flags; + else + __entry->flags = ~0; + + if (err->validation_bits & CPER_ARM_INFO_VALID_ERR_INFO) + __entry->error_info = err->error_info; + else + __entry->error_info = 0ULL; + + if (err->validation_bits & CPER_ARM_INFO_VALID_VIRT_ADDR) + __entry->virt_fault_addr = err->virt_fault_addr; + else + __entry->virt_fault_addr = 0ULL; + + if (err->validation_bits & CPER_ARM_INFO_VALID_PHYSICAL_ADDR) + __entry->physical_fault_addr = err->physical_fault_addr; + else + __entry->physical_fault_addr = 0ULL; + ), + + TP_printk("ARM Processor Error: type %s; count: %u; flags: %s;" + " error info: %016llx; virtual address: %016llx;" + " physical address: %016llx", + __print_symbolic(__entry->type, ARCH_PROC_ERR_TYPE), + __entry->multiple_error, + __print_symbolic(__entry->flags, ARCH_PROC_ERR_FLAGS), + __entry->error_info, __entry->virt_fault_addr, + __entry->physical_fault_addr) +); + /* * Unknown Section Report *