From patchwork Tue Sep 26 09:33:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13398954 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30424E7D270 for ; Tue, 26 Sep 2023 09:36:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234252AbjIZJgz (ORCPT ); Tue, 26 Sep 2023 05:36:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234114AbjIZJgx (ORCPT ); Tue, 26 Sep 2023 05:36:53 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30397EB; Tue, 26 Sep 2023 02:36:46 -0700 (PDT) Received: from kwepemm000005.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Rvvft5t7BzNmlB; Tue, 26 Sep 2023 17:32:54 +0800 (CST) Received: from huawei.com (10.50.163.32) by kwepemm000005.china.huawei.com (7.193.23.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 26 Sep 2023 17:36:43 +0800 From: liulongfang To: , , , CC: , , , , Subject: [PATCH v16 0/2] add debugfs to migration driver Date: Tue, 26 Sep 2023 17:33:54 +0800 Message-ID: <20230926093356.56014-1-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm000005.china.huawei.com (7.193.23.27) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Add a debugfs function to the migration driver in VFIO to provide a step-by-step debugfs information for the migration driver. Changes v15 -> v16 Update the calling order of functions to maintain symmetry Changes v14 -> v15 Update the output status value of live migration. Changes v13 -> v14 Split the patchset and keep the vfio debugfs frame. Changes v12 -> v13 Solve the problem of open and close competition to debugfs. Changes v11 -> v12 Update loading conditions of vfio debugfs. Changes v10 -> v11 Delete the device restore function in debugfs. Changes v9 -> v10 Update the debugfs file of the live migration driver. Changes v8 -> v9 Update the debugfs directory structure of vfio. Changes v7 -> v8 Add support for platform devices. Changes v6 -> v7 Fix some code style issues. Changes v5 -> v6 Control the creation of debugfs through the CONFIG_DEBUG_FS. Changes v4 -> v5 Remove the newly added vfio_migration_ops and use seq_printf to optimize the implementation of debugfs. Changes v3 -> v4 Change the migration_debug_operate interface to debug_root file. Changes v2 -> v3 Extend the debugfs function from hisilicon device to vfio. Changes v1 -> v2 Change the registration method of root_debugfs to register with module initialization. Longfang Liu (2): vfio/migration: Add debugfs to live migration driver Documentation: add debugfs description for vfio Documentation/ABI/testing/debugfs-vfio | 25 ++++++++ MAINTAINERS | 1 + drivers/vfio/Makefile | 1 + drivers/vfio/vfio.h | 14 +++++ drivers/vfio/vfio_debugfs.c | 87 ++++++++++++++++++++++++++ drivers/vfio/vfio_main.c | 14 ++++- include/linux/vfio.h | 7 +++ 7 files changed, 147 insertions(+), 2 deletions(-) create mode 100644 Documentation/ABI/testing/debugfs-vfio create mode 100644 drivers/vfio/vfio_debugfs.c