1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
Copyright 2021 Intel Corporation
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.
*/
// This application demonstrates using the blockio API.
package main
import (
"flag"
"fmt"
"os"
"sort"
"strings"
"github.com/intel/goresctrl/pkg/rdt"
)
var (
// Global command line flags
groupPrefix string
)
type subCmd func([]string) error
var subCmds = map[string]subCmd{
"info": subCmdInfo,
"configure": subCmdConfigure,
}
func main() {
cmds := make([]string, 0, len(subCmds))
for c := range subCmds {
cmds = append(cmds, c)
}
sort.Strings(cmds)
allCmds := strings.Join(cmds, ", ")
if len(os.Args) < 2 {
exitError("missing sub-command, must be one of: %s\n", allCmds)
}
// Run sub-command
cmd, ok := subCmds[os.Args[1]]
if !ok {
exitError("unknown sub-command %q, must be of: %s\n", os.Args[1], allCmds)
}
if err := cmd(os.Args[2:]); err != nil {
exitError("sub-command %q failed: %v\n", os.Args[1], err)
}
}
func addGlobalFlags(flagset *flag.FlagSet) {
flagset.StringVar(&groupPrefix, "group-prefix", "", "prefix to use for resctrl groups")
}
func subCmdInfo(args []string) error {
// Parse command line args
flags := flag.NewFlagSet("info", flag.ExitOnError)
addGlobalFlags(flags)
if err := flags.Parse(args); err != nil {
return err
}
// Run sub-command
if err := rdt.Initialize(groupPrefix); err != nil {
fmt.Printf("RDT is not enabled: %v\n", err)
return nil
}
fmt.Printf("Monitoring supported: %v\n", rdt.MonSupported())
if rdt.MonSupported() {
mon := rdt.GetMonFeatures()
fmt.Println("Monitoring features:")
for r, f := range mon {
fmt.Printf(" - %s: %v\n", r, strings.Join(f, ", "))
}
}
fmt.Println("Classes:")
for _, cls := range rdt.GetClasses() {
fmt.Printf(" - %s\n", cls.Name())
mon := cls.GetMonGroups()
if len(mon) > 0 {
fmt.Println(" Monitoring groups:")
for _, grp := range mon {
fmt.Printf(" - %s\n", grp.Name())
}
}
}
return nil
}
func subCmdConfigure(args []string) error {
// Parse command line args
flags := flag.NewFlagSet("configure", flag.ExitOnError)
addGlobalFlags(flags)
configFile := flags.String("config-file", "", "path to rdt configuration file")
force := flags.Bool("force", false, "force configuration, delete non-empty resctrl groups")
if err := flags.Parse(args); err != nil {
return err
}
if *configFile == "" {
return fmt.Errorf("-config-file must be specified")
}
// Run sub-command
if err := rdt.Initialize(groupPrefix); err != nil {
return fmt.Errorf("RDT is not enabled: %v", err)
}
fmt.Println("Configuring resctrl filesystem...")
if err := rdt.SetConfigFromFile(*configFile, *force); err != nil {
return err
}
fmt.Println("Done!")
return nil
}
func exitError(format string, args ...interface{}) {
fmt.Printf("ERROR: "+format+"\n", args...)
os.Exit(1)
}
|
