From patchwork Fri Sep 1 02:36:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13371990 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 F1604CA0FE1 for ; Fri, 1 Sep 2023 02:38:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348142AbjIACip (ORCPT ); Thu, 31 Aug 2023 22:38:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231431AbjIACio (ORCPT ); Thu, 31 Aug 2023 22:38:44 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34894E6E; Thu, 31 Aug 2023 19:38:38 -0700 (PDT) Received: from kwepemm600005.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4RcMcR3tP1z1L9L5; Fri, 1 Sep 2023 10:36:55 +0800 (CST) Received: from huawei.com (10.50.163.32) by kwepemm600005.china.huawei.com (7.193.23.191) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Fri, 1 Sep 2023 10:38:35 +0800 From: liulongfang To: , , , CC: , , , , Subject: [PATCH v15 0/2] add debugfs to migration driver Date: Fri, 1 Sep 2023 10:36:04 +0800 Message-ID: <20230901023606.47587-1-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm600005.china.huawei.com (7.193.23.191) 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 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 | 80 ++++++++++++++++++++++++++ drivers/vfio/vfio_main.c | 5 +- include/linux/vfio.h | 7 +++ 7 files changed, 132 insertions(+), 1 deletion(-) create mode 100644 Documentation/ABI/testing/debugfs-vfio create mode 100644 drivers/vfio/vfio_debugfs.c