Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754638AbdIGHsi (ORCPT ); Thu, 7 Sep 2017 03:48:38 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:5993 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754582AbdIGHsc (ORCPT ); Thu, 7 Sep 2017 03:48:32 -0400 From: Xie XiuQi To: , , , , , , , , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 2/3] GHES: add a notify chain for process memory section Date: Thu, 7 Sep 2017 15:45:15 +0800 Message-ID: <1504770316-4327-3-git-send-email-xiexiuqi@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1504770316-4327-1-git-send-email-xiexiuqi@huawei.com> References: <1504770316-4327-1-git-send-email-xiexiuqi@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090205.59B0F8E8.0043,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: 20f3f79061744db5026419e63d07feb2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1719 Lines: 56 Add a notify chain for process memory section, with which other modules might do error recovery. Signed-off-by: Xie XiuQi --- drivers/acpi/apei/ghes.c | 10 ++++++++++ include/acpi/ghes.h | 8 ++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 502335c..5b310b7 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -108,6 +108,9 @@ static inline bool is_hest_type_generic_v2(struct ghes *ghes) static LIST_HEAD(ghes_hed); static DEFINE_MUTEX(ghes_list_mutex); +ATOMIC_NOTIFIER_HEAD(ghes_mem_err_chain); +EXPORT_SYMBOL(ghes_mem_err_chain); + /* * Because the memory area used to transfer hardware error information * from BIOS to Linux can be determined only in NMI, IRQ or timer @@ -479,6 +482,13 @@ static void ghes_do_proc(struct ghes *ghes, if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) { struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata); + struct ghes_mem_err mem; + + mem.notify_type = ghes->generic->notify.type; + mem.severity = gdata->error_severity; + mem.mem_err = mem_err; + + atomic_notifier_call_chain(&ghes_mem_err_chain, 0, &mem); ghes_edac_report_mem_error(ghes, sev, mem_err); diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h index 9f26e01..df3f6d9 100644 --- a/include/acpi/ghes.h +++ b/include/acpi/ghes.h @@ -115,4 +115,12 @@ static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) int ghes_notify_sea(void); +struct ghes_mem_err { + int notify_type; + int severity; + struct cper_sec_mem_err *mem_err; +}; + +extern struct atomic_notifier_head ghes_mem_err_chain; + #endif /* GHES_H */ -- 1.8.3.1