From af871d1ed5f41ad0bf61a0ae6a8e639af8fcaf32 Mon Sep 17 00:00:00 2001 From: Eric Fried Date: Wed, 8 May 2019 17:00:37 -0500 Subject: [PATCH] Create trait for NUMA subtree affinity Introduce trait HW_NUMA_ROOT. This is to be used with the 'resourceless RP' and 'same_subtree' placement features [1] when requesting NUMA affinity (e.g. multiple devices affined to the same NUMA node) especially when not requesting resources from the subtree root provider itself. [1] https://review.opendev.org/#/c/662191/ Change-Id: If5478e797b7bec2d8ebe78dd959dcf179a2834f4 Story: #2005575 Task: #30908 --- os_traits/hw/numa/__init__.py | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 os_traits/hw/numa/__init__.py diff --git a/os_traits/hw/numa/__init__.py b/os_traits/hw/numa/__init__.py new file mode 100644 index 0000000..e86a700 --- /dev/null +++ b/os_traits/hw/numa/__init__.py @@ -0,0 +1,22 @@ +# -*- coding: utf-8 -*- + +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +# Characteristics of NUMA nodes/cells/sockets/etc. +TRAITS = [ + # A provider representing the subtree root of a NUMA node should be + # decorated with this trait so that requests can represent NUMA affinity + # even when no resources are requested from the NUMA node provider itself. + # See https://review.opendev.org/#/c/662191/ + 'ROOT', +]