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Message-ID: <20221128031200.11017-5-liulongfang@huawei.com>
Date: Mon, 28 Nov 2022 11:11:59 +0800
From: Longfang Liu <liulongfang@...wei.com>
To: <alex.williamson@...hat.com>, <jgg@...dia.com>,
<shameerali.kolothum.thodi@...wei.com>, <john.garry@...wei.com>
CC: <cohuck@...hat.com>, <linux-kernel@...r.kernel.org>,
<linuxarm@...neuler.org>, <liulongfang@...wei.com>
Subject: [PATCH v3 4/5] Documentation: add debugfs description for hisi_acc_vfio_pci
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@...wei.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..a8cfc7688b88
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-hisi-migration
@@ -0,0 +1,32 @@
+What: /sys/kernel/debug/vfio_mig/<bdf>/state
+Date: Nov 2022
+Contact: linux-kernel@...r.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: Nov 2022
+Contact: linux-kernel@...r.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: Nov 2022
+Contact: linux-kernel@...r.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: Nov 2022
+Contact: linux-kernel@...r.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
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