From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 05F4B1B435 for ; Mon, 9 Jul 2018 13:58:53 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Jul 2018 04:58:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,330,1526367600"; d="scan'208";a="53024476" Received: from jeffguo-z170x-ud5.sh.intel.com (HELO localhost.localdomain) ([10.67.104.10]) by fmsmga007.fm.intel.com with ESMTP; 09 Jul 2018 04:58:50 -0700 From: Jeff Guo 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, arybchenko@solarflare.com, wenzhuo.lu@intel.com Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com Date: Mon, 9 Jul 2018 19:56:15 +0800 Message-Id: <1531137377-10157-6-git-send-email-jia.guo@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531137377-10157-1-git-send-email-jia.guo@intel.com> References: <1498711073-42917-1-git-send-email-jia.guo@intel.com> <1531137377-10157-1-git-send-email-jia.guo@intel.com> Subject: [dpdk-dev] [PATCH v7 5/7] bus: add helper to handle sigbus X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Jul 2018 11:58:54 -0000 This patch aim to add a helper to iterate all buses to find the corresponding bus to handle the sigbus error. Signed-off-by: Jeff Guo --- lib/librte_eal/common/eal_common_bus.c | 42 ++++++++++++++++++++++++++++++++++ lib/librte_eal/common/eal_private.h | 12 ++++++++++ 2 files changed, 54 insertions(+) diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c index 0943851..8856adc 100644 --- a/lib/librte_eal/common/eal_common_bus.c +++ b/lib/librte_eal/common/eal_common_bus.c @@ -37,6 +37,7 @@ #include #include #include +#include #include "eal_private.h" @@ -242,3 +243,44 @@ rte_bus_get_iommu_class(void) } return mode; } + +static int +bus_handle_sigbus(const struct rte_bus *bus, + const void *failure_addr) +{ + int ret; + + if (!bus->sigbus_handler) { + RTE_LOG(ERR, EAL, "Function sigbus_handler not supported by " + "bus (%s)\n", bus->name); + return -1; + } + + ret = bus->sigbus_handler(failure_addr); + rte_errno = ret; + + return !(bus->sigbus_handler && ret <= 0); +} + +int +rte_bus_sigbus_handler(const void *failure_addr) +{ + struct rte_bus *bus; + + int ret = 0; + int old_errno = rte_errno; + + rte_errno = 0; + + bus = rte_bus_find(NULL, bus_handle_sigbus, failure_addr); + /* failed to handle the sigbus, pass the new errno. */ + if (!bus) + ret = 1; + else if (rte_errno == -1) + return -1; + + /* otherwise restore the old errno. */ + rte_errno = old_errno; + + return ret; +} diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h index bdadc4d..2337e71 100644 --- a/lib/librte_eal/common/eal_private.h +++ b/lib/librte_eal/common/eal_private.h @@ -258,4 +258,16 @@ int rte_mp_channel_init(void); */ void dev_callback_process(char *device_name, enum rte_dev_event_type event); +/** + * Iterate all buses to find the corresponding bus, to handle the sigbus error. + * @param failure_addr + * Pointer of the fault address of the sigbus error. + * + * @return + * 0 success to handle the sigbus. + * -1 failed to handle the sigbus + * 1 no bus can handler the sigbus + */ +int rte_bus_sigbus_handler(const void *failure_addr); + #endif /* _EAL_PRIVATE_H_ */ -- 2.7.4