diff --git a/vendor/github.com/prometheus/procfs/cpuinfo.go b/vendor/github.com/prometheus/procfs/cpuinfo.go
new file mode 100644
index 0000000..5623b24
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/cpuinfo.go
@@ -0,0 +1,481 @@
+// Copyright 2019 The Prometheus Authors
+// 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.
+
+// +build linux
+
+package procfs
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/prometheus/procfs/internal/util"
+)
+
+// CPUInfo contains general information about a system CPU found in /proc/cpuinfo
+type CPUInfo struct {
+	Processor       uint
+	VendorID        string
+	CPUFamily       string
+	Model           string
+	ModelName       string
+	Stepping        string
+	Microcode       string
+	CPUMHz          float64
+	CacheSize       string
+	PhysicalID      string
+	Siblings        uint
+	CoreID          string
+	CPUCores        uint
+	APICID          string
+	InitialAPICID   string
+	FPU             string
+	FPUException    string
+	CPUIDLevel      uint
+	WP              string
+	Flags           []string
+	Bugs            []string
+	BogoMips        float64
+	CLFlushSize     uint
+	CacheAlignment  uint
+	AddressSizes    string
+	PowerManagement string
+}
+
+var (
+	cpuinfoClockRegexp          = regexp.MustCompile(`([\d.]+)`)
+	cpuinfoS390XProcessorRegexp = regexp.MustCompile(`^processor\s+(\d+):.*`)
+)
+
+// CPUInfo returns information about current system CPUs.
+// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+func (fs FS) CPUInfo() ([]CPUInfo, error) {
+	data, err := util.ReadFileNoStat(fs.proc.Path("cpuinfo"))
+	if err != nil {
+		return nil, err
+	}
+	return parseCPUInfo(data)
+}
+
+func parseCPUInfoX86(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+
+	// find the first "processor" line
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "processor") || !strings.Contains(firstLine, ":") {
+		return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	v, err := strconv.ParseUint(field[1], 0, 32)
+	if err != nil {
+		return nil, err
+	}
+	firstcpu := CPUInfo{Processor: uint(v)}
+	cpuinfo := []CPUInfo{firstcpu}
+	i := 0
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
+			i++
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].Processor = uint(v)
+		case "vendor", "vendor_id":
+			cpuinfo[i].VendorID = field[1]
+		case "cpu family":
+			cpuinfo[i].CPUFamily = field[1]
+		case "model":
+			cpuinfo[i].Model = field[1]
+		case "model name":
+			cpuinfo[i].ModelName = field[1]
+		case "stepping":
+			cpuinfo[i].Stepping = field[1]
+		case "microcode":
+			cpuinfo[i].Microcode = field[1]
+		case "cpu MHz":
+			v, err := strconv.ParseFloat(field[1], 64)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CPUMHz = v
+		case "cache size":
+			cpuinfo[i].CacheSize = field[1]
+		case "physical id":
+			cpuinfo[i].PhysicalID = field[1]
+		case "siblings":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].Siblings = uint(v)
+		case "core id":
+			cpuinfo[i].CoreID = field[1]
+		case "cpu cores":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CPUCores = uint(v)
+		case "apicid":
+			cpuinfo[i].APICID = field[1]
+		case "initial apicid":
+			cpuinfo[i].InitialAPICID = field[1]
+		case "fpu":
+			cpuinfo[i].FPU = field[1]
+		case "fpu_exception":
+			cpuinfo[i].FPUException = field[1]
+		case "cpuid level":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CPUIDLevel = uint(v)
+		case "wp":
+			cpuinfo[i].WP = field[1]
+		case "flags":
+			cpuinfo[i].Flags = strings.Fields(field[1])
+		case "bugs":
+			cpuinfo[i].Bugs = strings.Fields(field[1])
+		case "bogomips":
+			v, err := strconv.ParseFloat(field[1], 64)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].BogoMips = v
+		case "clflush size":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CLFlushSize = uint(v)
+		case "cache_alignment":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CacheAlignment = uint(v)
+		case "address sizes":
+			cpuinfo[i].AddressSizes = field[1]
+		case "power management":
+			cpuinfo[i].PowerManagement = field[1]
+		}
+	}
+	return cpuinfo, nil
+}
+
+func parseCPUInfoARM(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+
+	firstLine := firstNonEmptyLine(scanner)
+	match, _ := regexp.MatchString("^[Pp]rocessor", firstLine)
+	if !match || !strings.Contains(firstLine, ":") {
+		return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	cpuinfo := []CPUInfo{}
+	featuresLine := ""
+	commonCPUInfo := CPUInfo{}
+	i := 0
+	if strings.TrimSpace(field[0]) == "Processor" {
+		commonCPUInfo = CPUInfo{ModelName: field[1]}
+		i = -1
+	} else {
+		v, err := strconv.ParseUint(field[1], 0, 32)
+		if err != nil {
+			return nil, err
+		}
+		firstcpu := CPUInfo{Processor: uint(v)}
+		cpuinfo = []CPUInfo{firstcpu}
+	}
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			cpuinfo = append(cpuinfo, commonCPUInfo) // start of the next processor
+			i++
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].Processor = uint(v)
+		case "BogoMIPS":
+			if i == -1 {
+				cpuinfo = append(cpuinfo, commonCPUInfo) // There is only one processor
+				i++
+				cpuinfo[i].Processor = 0
+			}
+			v, err := strconv.ParseFloat(field[1], 64)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].BogoMips = v
+		case "Features":
+			featuresLine = line
+		case "model name":
+			cpuinfo[i].ModelName = field[1]
+		}
+	}
+	fields := strings.SplitN(featuresLine, ": ", 2)
+	for i := range cpuinfo {
+		cpuinfo[i].Flags = strings.Fields(fields[1])
+	}
+	return cpuinfo, nil
+
+}
+
+func parseCPUInfoS390X(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "vendor_id") || !strings.Contains(firstLine, ":") {
+		return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	cpuinfo := []CPUInfo{}
+	commonCPUInfo := CPUInfo{VendorID: field[1]}
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "bogomips per cpu":
+			v, err := strconv.ParseFloat(field[1], 64)
+			if err != nil {
+				return nil, err
+			}
+			commonCPUInfo.BogoMips = v
+		case "features":
+			commonCPUInfo.Flags = strings.Fields(field[1])
+		}
+		if strings.HasPrefix(line, "processor") {
+			match := cpuinfoS390XProcessorRegexp.FindStringSubmatch(line)
+			if len(match) < 2 {
+				return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+			}
+			cpu := commonCPUInfo
+			v, err := strconv.ParseUint(match[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpu.Processor = uint(v)
+			cpuinfo = append(cpuinfo, cpu)
+		}
+		if strings.HasPrefix(line, "cpu number") {
+			break
+		}
+	}
+
+	i := 0
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "cpu number":
+			i++
+		case "cpu MHz dynamic":
+			clock := cpuinfoClockRegexp.FindString(strings.TrimSpace(field[1]))
+			v, err := strconv.ParseFloat(clock, 64)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CPUMHz = v
+		case "physical id":
+			cpuinfo[i].PhysicalID = field[1]
+		case "core id":
+			cpuinfo[i].CoreID = field[1]
+		case "cpu cores":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CPUCores = uint(v)
+		case "siblings":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].Siblings = uint(v)
+		}
+	}
+
+	return cpuinfo, nil
+}
+
+func parseCPUInfoMips(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+
+	// find the first "processor" line
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "system type") || !strings.Contains(firstLine, ":") {
+		return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	cpuinfo := []CPUInfo{}
+	systemType := field[1]
+
+	i := 0
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			i = int(v)
+			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
+			cpuinfo[i].Processor = uint(v)
+			cpuinfo[i].VendorID = systemType
+		case "cpu model":
+			cpuinfo[i].ModelName = field[1]
+		case "BogoMIPS":
+			v, err := strconv.ParseFloat(field[1], 64)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].BogoMips = v
+		}
+	}
+	return cpuinfo, nil
+}
+
+func parseCPUInfoPPC(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "processor") || !strings.Contains(firstLine, ":") {
+		return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	v, err := strconv.ParseUint(field[1], 0, 32)
+	if err != nil {
+		return nil, err
+	}
+	firstcpu := CPUInfo{Processor: uint(v)}
+	cpuinfo := []CPUInfo{firstcpu}
+	i := 0
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
+			i++
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].Processor = uint(v)
+		case "cpu":
+			cpuinfo[i].VendorID = field[1]
+		case "clock":
+			clock := cpuinfoClockRegexp.FindString(strings.TrimSpace(field[1]))
+			v, err := strconv.ParseFloat(clock, 64)
+			if err != nil {
+				return nil, err
+			}
+			cpuinfo[i].CPUMHz = v
+		}
+	}
+	return cpuinfo, nil
+}
+
+func parseCPUInfoRISCV(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "processor") || !strings.Contains(firstLine, ":") {
+		return nil, fmt.Errorf("invalid cpuinfo file: %q", firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	v, err := strconv.ParseUint(field[1], 0, 32)
+	if err != nil {
+		return nil, err
+	}
+	firstcpu := CPUInfo{Processor: uint(v)}
+	cpuinfo := []CPUInfo{firstcpu}
+	i := 0
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			i = int(v)
+			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
+			cpuinfo[i].Processor = uint(v)
+		case "hart":
+			cpuinfo[i].CoreID = field[1]
+		case "isa":
+			cpuinfo[i].ModelName = field[1]
+		}
+	}
+	return cpuinfo, nil
+}
+
+func parseCPUInfoDummy(_ []byte) ([]CPUInfo, error) { // nolint:unused,deadcode
+	return nil, errors.New("not implemented")
+}
+
+// firstNonEmptyLine advances the scanner to the first non-empty line
+// and returns the contents of that line
+func firstNonEmptyLine(scanner *bufio.Scanner) string {
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.TrimSpace(line) != "" {
+			return line
+		}
+	}
+	return ""
+}