linux-kernel - [PATCH v4 5/5] dmaengine: idxd: add ABI documentation for shared wq

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Date:   Thu, 17 Sep 2020 14:15:41 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     vkoul@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dan.j.williams@...el.com, tony.luck@...el.com,
        jing.lin@...el.com, ashok.raj@...el.com, sanjay.k.kumar@...el.com,
        fenghua.yu@...el.com, kevin.tian@...el.com
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 5/5] dmaengine: idxd: add ABI documentation for shared wq

Add the sysfs attribute bits in ABI/stable for shared wq support.

Signed-off-by: Jing Lin <jing.lin@...el.com>
Signed-off-by: Dave Jiang <dave.jiang@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
Reviewed-by: Dan Williams <dan.j.williams@...el.com>
---
 Documentation/ABI/stable/sysfs-driver-dma-idxd |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd
index b44183880935..42d3dc03ffea 100644
--- a/Documentation/ABI/stable/sysfs-driver-dma-idxd
+++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd
@@ -77,6 +77,13 @@ Contact:        dmaengine@...r.kernel.org
 Description:    The operation capability bit mask specify the operation types
 		supported by the this device.
 
+What:		/sys/bus/dsa/devices/dsa<m>/pasid_enabled
+Date:		Sep 17, 2020
+KernelVersion:	5.10.0
+Contact:	dmaengine@...r.kernel.org
+Description:	To indicate if PASID (process address space identifier) is
+		enabled or not for this device.
+
 What:           /sys/bus/dsa/devices/dsa<m>/state
 Date:           Oct 25, 2019
 KernelVersion:  5.6.0
@@ -122,6 +129,13 @@ KernelVersion:	5.10.0
 Contact:	dmaengine@...r.kernel.org
 Description:	The last executed device administrative command's status/error.
 
+What:		/sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
+Date:		Sept 17, 2020
+KernelVersion:	5.10.0
+Contact:	dmaengine@...r.kernel.org
+Description:	To indicate block on fault is allowed or not for the work queue
+		to support on demand paging.
+
 What:           /sys/bus/dsa/devices/wq<m>.<n>/group_id
 Date:           Oct 25, 2019
 KernelVersion:  5.6.0