linux-kernel - [PATCH v10 2/3] Documentation: add the device isolation feature sysfs nodes for uacce

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Message-ID: <20221119074817.12063-3-yekai13@huawei.com>
Date:   Sat, 19 Nov 2022 07:48:16 +0000
From:   Kai Ye <yekai13@...wei.com>
To:     <gregkh@...uxfoundation.org>, <herbert@...dor.apana.org.au>
CC:     <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <wangzhou1@...ilicon.com>, <liulongfang@...wei.com>,
        <yekai13@...wei.com>
Subject: [PATCH v10 2/3] Documentation: add the device isolation feature sysfs nodes for uacce

Update documentation describing sysfs node that could help to
configure hardware error threshold for users in the user space. And
describing sysfs node that could read the device isolated state.

Signed-off-by: Kai Ye <yekai13@...wei.com>
---
 Documentation/ABI/testing/sysfs-driver-uacce | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce
index 08f2591138af..d3f0b8f3c589 100644
--- a/Documentation/ABI/testing/sysfs-driver-uacce
+++ b/Documentation/ABI/testing/sysfs-driver-uacce
@@ -19,6 +19,24 @@ Contact:        linux-accelerators@...ts.ozlabs.org
 Description:    Available instances left of the device
                 Return -ENODEV if uacce_ops get_available_instances is not provided
 
+What:           /sys/class/uacce/<dev_name>/isolate_strategy
+Date:           Nov 2022
+KernelVersion:  6.1
+Contact:        linux-accelerators@...ts.ozlabs.org
+Description:    (RW) A sysfs node that configure the error threshold for the hardware
+                isolation strategy. This size is a configured integer value, which is the
+                number of threshold for hardware errors occurred in one hour. The default is 0.
+                0 means never isolate the device. The maximum value is 65535. You can write
+                a number of threshold based on your hardware.
+
+What:           /sys/class/uacce/<dev_name>/isolate
+Date:           Nov 2022
+KernelVersion:  6.1
+Contact:        linux-accelerators@...ts.ozlabs.org
+Description:    (R) A sysfs node that read the device isolated state. The value 1
+                means the device is unavailable. The 0 means the device is
+                available.
+
 What:           /sys/class/uacce/<dev_name>/algorithms
 Date:           Feb 2020
 KernelVersion:  5.7
-- 
2.17.1