From: Longfang Liu <liulongfang@huawei.com>
To: <alex.williamson@redhat.com>, <jgg@nvidia.com>,
<shameerali.kolothum.thodi@huawei.com>,
<jonathan.cameron@huawei.com>
Cc: <cohuck@redhat.com>, <linux-kernel@vger.kernel.org>,
<linuxarm@openeuler.org>, <liulongfang@huawei.com>
Subject: [PATCH v7 4/5] Documentation: add debugfs description for hisi_acc_vfio_pci
Date: Fri, 20 Jan 2023 11:29:29 +0800 [thread overview]
Message-ID: <20230120032930.43608-5-liulongfang@huawei.com> (raw)
In-Reply-To: <20230120032930.43608-1-liulongfang@huawei.com>
Add a debugfs document description file to help users understand
how to use the accelerator live migration driver's debugfs.
Signed-off-by: Longfang Liu <liulongfang@huawei.com>
---
.../ABI/testing/debugfs-hisi-migration | 32 +++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration
diff --git a/Documentation/ABI/testing/debugfs-hisi-migration b/Documentation/ABI/testing/debugfs-hisi-migration
new file mode 100644
index 000000000000..d644a497c464
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-hisi-migration
@@ -0,0 +1,32 @@
+What: /sys/kernel/debug/vfio_mig/<bdf>/state
+Date: Jan 2023
+Contact: linux-kernel@vger.kernel.org
+Description: Read the live migration status of the VF device.
+ The status of these live migrations includes:
+ ERROR, RUNNING, STOP, STOP_COPY, RESUMING.
+
+What: /sys/kernel/debug/vfio_mig/<bdf>/mig_data
+Date: Jan 2023
+Contact: linux-kernel@vger.kernel.org
+Description: Read the live migration data of the VF device.
+ The output format of the data is defined by the live
+ migration driver.
+
+What: /sys/kernel/debug/vfio_mig/<bdf>/mig_attr
+Date: Jan 2023
+Contact: linux-kernel@vger.kernel.org
+Description: Read the live migration attributes of the VF device.
+ The output format of the attributes is defined by the live
+ migration driver.
+
+What: /sys/kernel/debug/vfio_mig/<bdf>/debug
+Date: Jan 2023
+Contact: linux-kernel@vger.kernel.org
+Description: This debug file supports "echo" command write operations.
+ The command is actually represented by an integer number, and the
+ specific meaning is defined by the corresponding device driver.
+ For example, three commands are defined in the HiSilicon accelerator
+ live migration driver:
+ 0: State save
+ 1: State resume
+ 2: IO test
--
2.24.0
next prev parent reply other threads:[~2023-01-20 3:32 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-20 3:29 [PATCH v7 0/5] add debugfs to migration driver Longfang Liu
2023-01-20 3:29 ` [PATCH v7 1/5] vfio/migration: Add debugfs to live " Longfang Liu
2023-01-26 19:27 ` Alex Williamson
2023-02-01 3:20 ` liulongfang
2023-02-01 16:36 ` Alex Williamson
2023-01-20 3:29 ` [PATCH v7 2/5] hisi_acc_vfio_pci: extract public functions for container_of Longfang Liu
2023-01-20 3:29 ` [PATCH v7 3/5] hisi_acc_vfio_pci: register debugfs for hisilicon migration driver Longfang Liu
2023-01-26 19:28 ` Alex Williamson
2023-02-01 3:24 ` liulongfang
2023-01-20 3:29 ` Longfang Liu [this message]
2023-01-26 19:28 ` [PATCH v7 4/5] Documentation: add debugfs description for hisi_acc_vfio_pci Alex Williamson
2023-02-01 3:26 ` liulongfang
2023-01-20 3:29 ` [PATCH v7 5/5] vfio: update live migration device status Longfang Liu
2023-01-26 19:28 ` Alex Williamson
2023-02-01 3:36 ` liulongfang
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