linux-kernel - [PATCH v2 9/9] dmaengine: idxd: add ABI documentation for shared wq

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Message-ID: <158982805539.37989.15539309046009177293.stgit@djiang5-desk3.ch.intel.com>
Date:   Mon, 18 May 2020 11:54:15 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     vkoul@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, bhelgaas@...gle.com,
        gregkh@...uxfoundation.org, arnd@...db.de
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        x86@...nel.org, dan.j.williams@...el.com, ashok.raj@...el.com,
        fenghua.yu@...el.com, tony.luck@...el.com, jing.lin@...el.com,
        sanjay.k.kumar@...el.com, dave.hansen@...el.com
Subject: [PATCH v2 9/9] 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 2253bb1550d6..2b8ec961d783 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:		May 4, 2020
+KernelVersion:	5.8.0
+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
@@ -116,6 +123,13 @@ Description:    The maximum number of bandwidth tokens that may be in use at
 		one time by operations that access low bandwidth memory in the
 		device.
 
+What:		/sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
+Date:		May 4, 2020
+KernelVersion:	5.8.0
+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