From patchwork Sat Oct 28 07:54:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13439379 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ACAD4611B for ; Sat, 28 Oct 2023 07:57:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 205CDF2; Sat, 28 Oct 2023 00:57:51 -0700 (PDT) Received: from kwepemm000005.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4SHWxS2vJ7zMlDw; Sat, 28 Oct 2023 15:53:32 +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; Sat, 28 Oct 2023 15:57:48 +0800 From: Longfang Liu To: , , , CC: , , , , Subject: [PATCH v18 0/2] add debugfs to migration driver Date: Sat, 28 Oct 2023 15:54:45 +0800 Message-ID: <20231028075447.41939-1-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm000005.china.huawei.com (7.193.23.27) X-CFilter-Loop: Reflected Add a debugfs function to the migration driver in VFIO to provide a step-by-step debugfs information for the migration driver. Changes v17 -> v18 Replace seq_printf() with seq_puts(). Changes v16 -> v17 Add separate VFIO_DEBUGFS Kconfig entries. 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/Kconfig | 10 +++ drivers/vfio/Makefile | 1 + drivers/vfio/debugfs.c | 90 ++++++++++++++++++++++++++ drivers/vfio/vfio.h | 14 ++++ drivers/vfio/vfio_main.c | 4 ++ include/linux/vfio.h | 7 ++ include/uapi/linux/vfio.h | 1 + 9 files changed, 153 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-vfio create mode 100644 drivers/vfio/debugfs.c