mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2025-03-15 13:07:48 +00:00
85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package rdt
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import (
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"os/exec"
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"github.com/golang/glog"
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"sigs.k8s.io/node-feature-discovery/source"
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)
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// Source implements FeatureSource.
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type Source struct{}
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// Name returns an identifier string for this feature source.
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func (s Source) Name() string { return "rdt" }
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// Discover returns feature names for CMT and CAT if supported.
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func (s Source) Discover() (source.Features, error) {
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features := source.Features{}
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cmd := exec.Command("bash", "-c", "mon-discovery")
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if err := cmd.Run(); err != nil {
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glog.Errorf("support for RDT monitoring was not detected: %v", err)
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} else {
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// RDT monitoring detected.
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features["RDTMON"] = true
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}
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cmd = exec.Command("bash", "-c", "mon-cmt-discovery")
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if err := cmd.Run(); err != nil {
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glog.Errorf("support for RDT CMT monitoring was not detected: %v", err)
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} else {
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// RDT CMT monitoring detected.
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features["RDTCMT"] = true
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}
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cmd = exec.Command("bash", "-c", "mon-mbm-discovery")
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if err := cmd.Run(); err != nil {
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glog.Errorf("support for RDT MBM monitoring was not detected: %v", err)
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} else {
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// RDT MBM monitoring detected.
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features["RDTMBM"] = true
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}
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cmd = exec.Command("bash", "-c", "l3-alloc-discovery")
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if err := cmd.Run(); err != nil {
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glog.Errorf("support for RDT L3 allocation was not detected: %v", err)
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} else {
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// RDT L3 cache allocation detected.
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features["RDTL3CA"] = true
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}
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cmd = exec.Command("bash", "-c", "l2-alloc-discovery")
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if err := cmd.Run(); err != nil {
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glog.Errorf("support for RDT L2 allocation was not detected: %v", err)
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} else {
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// RDT L2 cache allocation detected.
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features["RDTL2CA"] = true
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}
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cmd = exec.Command("bash", "-c", "mem-bandwidth-alloc-discovery")
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if err := cmd.Run(); err != nil {
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glog.Errorf("support for RDT Memory bandwidth allocation was not detected: %v", err)
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} else {
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// RDT Memory bandwidth allocation detected.
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features["RDTMBA"] = true
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}
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return features, nil
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}
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