[RESEND PATCH v7 2/4] Documentation, dt, arm64/arm: dt bindings for numa.
mark.rutland at arm.com
Fri Dec 18 06:18:26 PST 2015
> +2 - numa-node-id
> +For the purpose of identification, each NUMA node is associated with a unique
> +token known as a node id. For the purpose of this binding
> +a node id is a 32-bit integer.
> +A device node is associated with a NUMA node by the presence of a
> +numa-node-id property which contains the node id of the device.
> + /* numa node 0 */
> + numa-node-id = <0>;
> + /* numa node 1 */
> + numa-node-id = <1>;
> +3 - distance-map
> +The device tree node distance-map describes the relative
> +distance(memory latency) between all numa nodes.
> +- compatible : Should at least contain "numa-distance-map-v1".
Thank you for updating these per my request.
The fact that these have changed since the late posting  means that
this is a new version of the patch rather than a resend. Please update
the PATCHvX number when changes are made.
You also need to update the driver for the new compatible string, so a
new version of that is required.
> +- distance-matrix
> + This property defines a matrix to describe the relative distances
> + between all numa nodes.
> + It is represented as a list of node pairs and their relative distance.
> + Note:
> + 1. Each entry represents distance from first node to second node.
> + The distance are equal in either direction.
> + 2. The distance from a node to self(local distance) is represented
> + with value 10 and all inter node distance should be represented with
> + value greater than 10.
> + 3. distance-matrix shold have entries in lexicographical ascending
> + order of nodes.
> + 4. There must be only one Device node distance-map and must reside in the root node.
I am still concerned that the local distance of 10 is completely
* Add a new local-distance property to the distance-map node allowing a
uniform local distance to be described, and require this property to
* Update the driver to account for that and the compatible string
* Send a complete PATCHv8 (or PATCHv$X where X > 7) series with a proper
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