From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Guo Subject: [PATCH V4 3/9] bus: introduce sigbus handler Date: Fri, 29 Jun 2018 18:30:42 +0800 Message-ID: <1530268248-7328-4-git-send-email-jia.guo@intel.com> References: <1498711073-42917-1-git-send-email-jia.guo@intel.com> <1530268248-7328-1-git-send-email-jia.guo@intel.com> Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com To: stephen@networkplumber.org, bruce.richardson@intel.com, ferruh.yigit@intel.com, konstantin.ananyev@intel.com, gaetan.rivet@6wind.com, jingjing.wu@intel.com, thomas@monjalon.net, motih@mellanox.com, matan@mellanox.com, harry.van.haaren@intel.com, qi.z.zhang@intel.com, shaopeng.he@intel.com, bernard.iremonger@intel.com Return-path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 016E81B4F7 for ; Fri, 29 Jun 2018 12:33:15 +0200 (CEST) In-Reply-To: <1530268248-7328-1-git-send-email-jia.guo@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" When device be hotplug, if data path still read/write device, the sigbus error will occur, this error need to be handled. So a handler need to be here to capture the signal and handle it correspondingly. To handle sigbus error is a bus-specific behavior, this patch introduces a bus ops so that each kind of bus can implement its own logic. Signed-off-by: Jeff Guo --- v4->v3: split patches to be small and clear. --- lib/librte_eal/common/include/rte_bus.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h index 3642aeb..231bd3d 100644 --- a/lib/librte_eal/common/include/rte_bus.h +++ b/lib/librte_eal/common/include/rte_bus.h @@ -181,6 +181,20 @@ typedef int (*rte_bus_parse_t)(const char *name, void *addr); typedef int (*rte_bus_hotplug_handler_t)(struct rte_device *dev); /** + * Implementation a specific sigbus handler, which is responsible + * for handle the sigbus error which is original memory error, or specific + * memory error that caused of hot unplug. + * @param failure_addr + * Pointer of the fault address of the sigbus error. + * + * @return + * 0 for success handle the sigbus. + * 1 for no handle the sigbus. + * -1 for failed to handle the sigbus + */ +typedef int (*rte_bus_sigbus_handler_t)(const void *failure_addr); + +/** * Bus scan policies */ enum rte_bus_scan_mode { @@ -226,6 +240,8 @@ struct rte_bus { rte_bus_get_iommu_class_t get_iommu_class; /**< Get iommu class */ rte_bus_hotplug_handler_t hotplug_handler; /**< handle hot plug on bus */ + rte_bus_sigbus_handler_t sigbus_handler; /**< handle sigbus error */ + }; /** -- 2.7.4