From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Guo Subject: [PATCH V20 0/4] add hot plug recovery mechanism Date: Wed, 18 Apr 2018 21:38:05 +0800 Message-ID: <1524058689-4954-1-git-send-email-jia.guo@intel.com> References: <1498711073-42917-1-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, jianfeng.tan@intel.com Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id DC78C8E84 for ; Wed, 18 Apr 2018 15:39:24 +0200 (CEST) In-Reply-To: <1498711073-42917-1-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" At the prior, device event monitor framework have been introduced, the typical usage of it is for device hot plug. If we want application would not be break down when device hot plug in or out, we still need some measures to do recovery to do preparation for device detach, so that we will not encounter any memory fault after device be hot unplug, that will let application to keep working. This patch set will introduces an API to implement the recovery mechanism to handle hot plug, and also use testpmd to show example how to use the API for process hot plug event, let the process could be smoothly like below: plug out->failure handle->stop forward->stop port->close port->detach port with this mechanism, user such as fail-safe driver or testpmd could be able to develop their own hot plug application. patchset history: v20->v19: clean the code refine the remap logic for multiple device. remove the auto binding v19->18: note for limitation of multiple hotplug,fix some typo, sqeeze patch. v18->v15: add document, add signal bus handler, refine the code to be more clear. the prior patch history please check the patch set "add device event monitor framework" Jeff Guo (4): bus/pci: introduce device hot unplug handle eal: add failure handler mechanism for hot plug igb_uio: fix uio release issue when hot unplug app/testpmd: show example to handler hot unplug app/test-pmd/testpmd.c | 29 ++++++-- doc/guides/rel_notes/release_18_05.rst | 6 ++ drivers/bus/pci/pci_common.c | 67 +++++++++++++++++ drivers/bus/pci/pci_common_uio.c | 32 +++++++++ drivers/bus/pci/private.h | 12 ++++ kernel/linux/igb_uio/igb_uio.c | 4 ++ lib/librte_eal/common/include/rte_bus.h | 16 +++++ lib/librte_eal/common/include/rte_dev.h | 11 +++ lib/librte_eal/linuxapp/eal/eal_dev.c | 124 +++++++++++++++++++++++++++++++- lib/librte_eal/rte_eal_version.map | 1 + 10 files changed, 297 insertions(+), 5 deletions(-) -- 2.7.4