Add support for shm-size.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #206
Approved by: TomSweeneyRedHat

17 files changed, 0 insertions, 2701 deletions

diff --git a/vendor/github.com/prometheus/procfs/LICENSE b/vendor/github.com/prometheus/procfs/LICENSE
deleted file mode 100644
index 261eeb9e9..000000000
--- a/vendor/github.com/prometheus/procfs/LICENSE
+++ /dev/null
@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
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-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
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-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
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-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
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-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
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-      implied, including, without limitation, any warranties or conditions
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-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
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-      Work (including but not limited to damages for loss of goodwill,
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-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
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-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
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-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
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-   Unless required by applicable law or agreed to in writing, software
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-   limitations under the License.
diff --git a/vendor/github.com/prometheus/procfs/NOTICE b/vendor/github.com/prometheus/procfs/NOTICE
deleted file mode 100644
index 53c5e9aa1..000000000
--- a/vendor/github.com/prometheus/procfs/NOTICE
+++ /dev/null
@@ -1,7 +0,0 @@
-procfs provides functions to retrieve system, kernel and process
-metrics from the pseudo-filesystem proc.
-
-Copyright 2014-2015 The Prometheus Authors
-
-This product includes software developed at
-SoundCloud Ltd. (http://soundcloud.com/).
diff --git a/vendor/github.com/prometheus/procfs/README.md b/vendor/github.com/prometheus/procfs/README.md
deleted file mode 100644
index 209549471..000000000
--- a/vendor/github.com/prometheus/procfs/README.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# procfs
-
-This procfs package provides functions to retrieve system, kernel and process
-metrics from the pseudo-filesystem proc.
-
-*WARNING*: This package is a work in progress. Its API may still break in
-backwards-incompatible ways without warnings. Use it at your own risk.
-
-[![GoDoc](https://godoc.org/github.com/prometheus/procfs?status.png)](https://godoc.org/github.com/prometheus/procfs)
-[![Build Status](https://travis-ci.org/prometheus/procfs.svg?branch=master)](https://travis-ci.org/prometheus/procfs)
-[![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/procfs)](https://goreportcard.com/report/github.com/prometheus/procfs)
diff --git a/vendor/github.com/prometheus/procfs/buddyinfo.go b/vendor/github.com/prometheus/procfs/buddyinfo.go
deleted file mode 100644
index 680a9842a..000000000
--- a/vendor/github.com/prometheus/procfs/buddyinfo.go
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2017 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.
-
-package procfs
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// A BuddyInfo is the details parsed from /proc/buddyinfo.
-// The data is comprised of an array of free fragments of each size.
-// The sizes are 2^n*PAGE_SIZE, where n is the array index.
-type BuddyInfo struct {
-	Node  string
-	Zone  string
-	Sizes []float64
-}
-
-// NewBuddyInfo reads the buddyinfo statistics.
-func NewBuddyInfo() ([]BuddyInfo, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return nil, err
-	}
-
-	return fs.NewBuddyInfo()
-}
-
-// NewBuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
-func (fs FS) NewBuddyInfo() ([]BuddyInfo, error) {
-	file, err := os.Open(fs.Path("buddyinfo"))
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	return parseBuddyInfo(file)
-}
-
-func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) {
-	var (
-		buddyInfo   = []BuddyInfo{}
-		scanner     = bufio.NewScanner(r)
-		bucketCount = -1
-	)
-
-	for scanner.Scan() {
-		var err error
-		line := scanner.Text()
-		parts := strings.Fields(string(line))
-
-		if len(parts) < 4 {
-			return nil, fmt.Errorf("invalid number of fields when parsing buddyinfo")
-		}
-
-		node := strings.TrimRight(parts[1], ",")
-		zone := strings.TrimRight(parts[3], ",")
-		arraySize := len(parts[4:])
-
-		if bucketCount == -1 {
-			bucketCount = arraySize
-		} else {
-			if bucketCount != arraySize {
-				return nil, fmt.Errorf("mismatch in number of buddyinfo buckets, previous count %d, new count %d", bucketCount, arraySize)
-			}
-		}
-
-		sizes := make([]float64, arraySize)
-		for i := 0; i < arraySize; i++ {
-			sizes[i], err = strconv.ParseFloat(parts[i+4], 64)
-			if err != nil {
-				return nil, fmt.Errorf("invalid value in buddyinfo: %s", err)
-			}
-		}
-
-		buddyInfo = append(buddyInfo, BuddyInfo{node, zone, sizes})
-	}
-
-	return buddyInfo, scanner.Err()
-}
diff --git a/vendor/github.com/prometheus/procfs/doc.go b/vendor/github.com/prometheus/procfs/doc.go
deleted file mode 100644
index e2acd6d40..000000000
--- a/vendor/github.com/prometheus/procfs/doc.go
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2014 Prometheus Team
-// 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.
-
-// Package procfs provides functions to retrieve system, kernel and process
-// metrics from the pseudo-filesystem proc.
-//
-// Example:
-//
-//    package main
-//
-//    import (
-//    	"fmt"
-//    	"log"
-//
-//    	"github.com/prometheus/procfs"
-//    )
-//
-//    func main() {
-//    	p, err := procfs.Self()
-//    	if err != nil {
-//    		log.Fatalf("could not get process: %s", err)
-//    	}
-//
-//    	stat, err := p.NewStat()
-//    	if err != nil {
-//    		log.Fatalf("could not get process stat: %s", err)
-//    	}
-//
-//    	fmt.Printf("command:  %s\n", stat.Comm)
-//    	fmt.Printf("cpu time: %fs\n", stat.CPUTime())
-//    	fmt.Printf("vsize:    %dB\n", stat.VirtualMemory())
-//    	fmt.Printf("rss:      %dB\n", stat.ResidentMemory())
-//    }
-//
-package procfs
diff --git a/vendor/github.com/prometheus/procfs/fs.go b/vendor/github.com/prometheus/procfs/fs.go
deleted file mode 100644
index 17546756b..000000000
--- a/vendor/github.com/prometheus/procfs/fs.go
+++ /dev/null
@@ -1,46 +0,0 @@
-package procfs
-
-import (
-	"fmt"
-	"os"
-	"path"
-
-	"github.com/prometheus/procfs/xfs"
-)
-
-// FS represents the pseudo-filesystem proc, which provides an interface to
-// kernel data structures.
-type FS string
-
-// DefaultMountPoint is the common mount point of the proc filesystem.
-const DefaultMountPoint = "/proc"
-
-// NewFS returns a new FS mounted under the given mountPoint. It will error
-// if the mount point can't be read.
-func NewFS(mountPoint string) (FS, error) {
-	info, err := os.Stat(mountPoint)
-	if err != nil {
-		return "", fmt.Errorf("could not read %s: %s", mountPoint, err)
-	}
-	if !info.IsDir() {
-		return "", fmt.Errorf("mount point %s is not a directory", mountPoint)
-	}
-
-	return FS(mountPoint), nil
-}
-
-// Path returns the path of the given subsystem relative to the procfs root.
-func (fs FS) Path(p ...string) string {
-	return path.Join(append([]string{string(fs)}, p...)...)
-}
-
-// XFSStats retrieves XFS filesystem runtime statistics.
-func (fs FS) XFSStats() (*xfs.Stats, error) {
-	f, err := os.Open(fs.Path("fs/xfs/stat"))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	return xfs.ParseStats(f)
-}
diff --git a/vendor/github.com/prometheus/procfs/ipvs.go b/vendor/github.com/prometheus/procfs/ipvs.go
deleted file mode 100644
index 696d114e7..000000000
--- a/vendor/github.com/prometheus/procfs/ipvs.go
+++ /dev/null
@@ -1,246 +0,0 @@
-package procfs
-
-import (
-	"bufio"
-	"encoding/hex"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// IPVSStats holds IPVS statistics, as exposed by the kernel in `/proc/net/ip_vs_stats`.
-type IPVSStats struct {
-	// Total count of connections.
-	Connections uint64
-	// Total incoming packages processed.
-	IncomingPackets uint64
-	// Total outgoing packages processed.
-	OutgoingPackets uint64
-	// Total incoming traffic.
-	IncomingBytes uint64
-	// Total outgoing traffic.
-	OutgoingBytes uint64
-}
-
-// IPVSBackendStatus holds current metrics of one virtual / real address pair.
-type IPVSBackendStatus struct {
-	// The local (virtual) IP address.
-	LocalAddress net.IP
-	// The local (virtual) port.
-	LocalPort uint16
-	// The local firewall mark
-	LocalMark string
-	// The transport protocol (TCP, UDP).
-	Proto string
-	// The remote (real) IP address.
-	RemoteAddress net.IP
-	// The remote (real) port.
-	RemotePort uint16
-	// The current number of active connections for this virtual/real address pair.
-	ActiveConn uint64
-	// The current number of inactive connections for this virtual/real address pair.
-	InactConn uint64
-	// The current weight of this virtual/real address pair.
-	Weight uint64
-}
-
-// NewIPVSStats reads the IPVS statistics.
-func NewIPVSStats() (IPVSStats, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-
-	return fs.NewIPVSStats()
-}
-
-// NewIPVSStats reads the IPVS statistics from the specified `proc` filesystem.
-func (fs FS) NewIPVSStats() (IPVSStats, error) {
-	file, err := os.Open(fs.Path("net/ip_vs_stats"))
-	if err != nil {
-		return IPVSStats{}, err
-	}
-	defer file.Close()
-
-	return parseIPVSStats(file)
-}
-
-// parseIPVSStats performs the actual parsing of `ip_vs_stats`.
-func parseIPVSStats(file io.Reader) (IPVSStats, error) {
-	var (
-		statContent []byte
-		statLines   []string
-		statFields  []string
-		stats       IPVSStats
-	)
-
-	statContent, err := ioutil.ReadAll(file)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-
-	statLines = strings.SplitN(string(statContent), "\n", 4)
-	if len(statLines) != 4 {
-		return IPVSStats{}, errors.New("ip_vs_stats corrupt: too short")
-	}
-
-	statFields = strings.Fields(statLines[2])
-	if len(statFields) != 5 {
-		return IPVSStats{}, errors.New("ip_vs_stats corrupt: unexpected number of fields")
-	}
-
-	stats.Connections, err = strconv.ParseUint(statFields[0], 16, 64)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-	stats.IncomingPackets, err = strconv.ParseUint(statFields[1], 16, 64)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-	stats.OutgoingPackets, err = strconv.ParseUint(statFields[2], 16, 64)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-	stats.IncomingBytes, err = strconv.ParseUint(statFields[3], 16, 64)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-	stats.OutgoingBytes, err = strconv.ParseUint(statFields[4], 16, 64)
-	if err != nil {
-		return IPVSStats{}, err
-	}
-
-	return stats, nil
-}
-
-// NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs.
-func NewIPVSBackendStatus() ([]IPVSBackendStatus, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return []IPVSBackendStatus{}, err
-	}
-
-	return fs.NewIPVSBackendStatus()
-}
-
-// NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs from the specified `proc` filesystem.
-func (fs FS) NewIPVSBackendStatus() ([]IPVSBackendStatus, error) {
-	file, err := os.Open(fs.Path("net/ip_vs"))
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	return parseIPVSBackendStatus(file)
-}
-
-func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
-	var (
-		status       []IPVSBackendStatus
-		scanner      = bufio.NewScanner(file)
-		proto        string
-		localMark    string
-		localAddress net.IP
-		localPort    uint16
-		err          error
-	)
-
-	for scanner.Scan() {
-		fields := strings.Fields(string(scanner.Text()))
-		if len(fields) == 0 {
-			continue
-		}
-		switch {
-		case fields[0] == "IP" || fields[0] == "Prot" || fields[1] == "RemoteAddress:Port":
-			continue
-		case fields[0] == "TCP" || fields[0] == "UDP":
-			if len(fields) < 2 {
-				continue
-			}
-			proto = fields[0]
-			localMark = ""
-			localAddress, localPort, err = parseIPPort(fields[1])
-			if err != nil {
-				return nil, err
-			}
-		case fields[0] == "FWM":
-			if len(fields) < 2 {
-				continue
-			}
-			proto = fields[0]
-			localMark = fields[1]
-			localAddress = nil
-			localPort = 0
-		case fields[0] == "->":
-			if len(fields) < 6 {
-				continue
-			}
-			remoteAddress, remotePort, err := parseIPPort(fields[1])
-			if err != nil {
-				return nil, err
-			}
-			weight, err := strconv.ParseUint(fields[3], 10, 64)
-			if err != nil {
-				return nil, err
-			}
-			activeConn, err := strconv.ParseUint(fields[4], 10, 64)
-			if err != nil {
-				return nil, err
-			}
-			inactConn, err := strconv.ParseUint(fields[5], 10, 64)
-			if err != nil {
-				return nil, err
-			}
-			status = append(status, IPVSBackendStatus{
-				LocalAddress:  localAddress,
-				LocalPort:     localPort,
-				LocalMark:     localMark,
-				RemoteAddress: remoteAddress,
-				RemotePort:    remotePort,
-				Proto:         proto,
-				Weight:        weight,
-				ActiveConn:    activeConn,
-				InactConn:     inactConn,
-			})
-		}
-	}
-	return status, nil
-}
-
-func parseIPPort(s string) (net.IP, uint16, error) {
-	var (
-		ip  net.IP
-		err error
-	)
-
-	switch len(s) {
-	case 13:
-		ip, err = hex.DecodeString(s[0:8])
-		if err != nil {
-			return nil, 0, err
-		}
-	case 46:
-		ip = net.ParseIP(s[1:40])
-		if ip == nil {
-			return nil, 0, fmt.Errorf("invalid IPv6 address: %s", s[1:40])
-		}
-	default:
-		return nil, 0, fmt.Errorf("unexpected IP:Port: %s", s)
-	}
-
-	portString := s[len(s)-4:]
-	if len(portString) != 4 {
-		return nil, 0, fmt.Errorf("unexpected port string format: %s", portString)
-	}
-	port, err := strconv.ParseUint(portString, 16, 16)
-	if err != nil {
-		return nil, 0, err
-	}
-
-	return ip, uint16(port), nil
-}
diff --git a/vendor/github.com/prometheus/procfs/mdstat.go b/vendor/github.com/prometheus/procfs/mdstat.go
deleted file mode 100644
index d7a248c0d..000000000
--- a/vendor/github.com/prometheus/procfs/mdstat.go
+++ /dev/null
@@ -1,138 +0,0 @@
-package procfs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-var (
-	statuslineRE = regexp.MustCompile(`(\d+) blocks .*\[(\d+)/(\d+)\] \[[U_]+\]`)
-	buildlineRE  = regexp.MustCompile(`\((\d+)/\d+\)`)
-)
-
-// MDStat holds info parsed from /proc/mdstat.
-type MDStat struct {
-	// Name of the device.
-	Name string
-	// activity-state of the device.
-	ActivityState string
-	// Number of active disks.
-	DisksActive int64
-	// Total number of disks the device consists of.
-	DisksTotal int64
-	// Number of blocks the device holds.
-	BlocksTotal int64
-	// Number of blocks on the device that are in sync.
-	BlocksSynced int64
-}
-
-// ParseMDStat parses an mdstat-file and returns a struct with the relevant infos.
-func (fs FS) ParseMDStat() (mdstates []MDStat, err error) {
-	mdStatusFilePath := fs.Path("mdstat")
-	content, err := ioutil.ReadFile(mdStatusFilePath)
-	if err != nil {
-		return []MDStat{}, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
-	}
-
-	mdStates := []MDStat{}
-	lines := strings.Split(string(content), "\n")
-	for i, l := range lines {
-		if l == "" {
-			continue
-		}
-		if l[0] == ' ' {
-			continue
-		}
-		if strings.HasPrefix(l, "Personalities") || strings.HasPrefix(l, "unused") {
-			continue
-		}
-
-		mainLine := strings.Split(l, " ")
-		if len(mainLine) < 3 {
-			return mdStates, fmt.Errorf("error parsing mdline: %s", l)
-		}
-		mdName := mainLine[0]
-		activityState := mainLine[2]
-
-		if len(lines) <= i+3 {
-			return mdStates, fmt.Errorf(
-				"error parsing %s: too few lines for md device %s",
-				mdStatusFilePath,
-				mdName,
-			)
-		}
-
-		active, total, size, err := evalStatusline(lines[i+1])
-		if err != nil {
-			return mdStates, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
-		}
-
-		// j is the line number of the syncing-line.
-		j := i + 2
-		if strings.Contains(lines[i+2], "bitmap") { // skip bitmap line
-			j = i + 3
-		}
-
-		// If device is syncing at the moment, get the number of currently
-		// synced bytes, otherwise that number equals the size of the device.
-		syncedBlocks := size
-		if strings.Contains(lines[j], "recovery") || strings.Contains(lines[j], "resync") {
-			syncedBlocks, err = evalBuildline(lines[j])
-			if err != nil {
-				return mdStates, fmt.Errorf("error parsing %s: %s", mdStatusFilePath, err)
-			}
-		}
-
-		mdStates = append(mdStates, MDStat{
-			Name:          mdName,
-			ActivityState: activityState,
-			DisksActive:   active,
-			DisksTotal:    total,
-			BlocksTotal:   size,
-			BlocksSynced:  syncedBlocks,
-		})
-	}
-
-	return mdStates, nil
-}
-
-func evalStatusline(statusline string) (active, total, size int64, err error) {
-	matches := statuslineRE.FindStringSubmatch(statusline)
-	if len(matches) != 4 {
-		return 0, 0, 0, fmt.Errorf("unexpected statusline: %s", statusline)
-	}
-
-	size, err = strconv.ParseInt(matches[1], 10, 64)
-	if err != nil {
-		return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
-	}
-
-	total, err = strconv.ParseInt(matches[2], 10, 64)
-	if err != nil {
-		return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
-	}
-
-	active, err = strconv.ParseInt(matches[3], 10, 64)
-	if err != nil {
-		return 0, 0, 0, fmt.Errorf("unexpected statusline %s: %s", statusline, err)
-	}
-
-	return active, total, size, nil
-}
-
-func evalBuildline(buildline string) (syncedBlocks int64, err error) {
-	matches := buildlineRE.FindStringSubmatch(buildline)
-	if len(matches) != 2 {
-		return 0, fmt.Errorf("unexpected buildline: %s", buildline)
-	}
-
-	syncedBlocks, err = strconv.ParseInt(matches[1], 10, 64)
-	if err != nil {
-		return 0, fmt.Errorf("%s in buildline: %s", err, buildline)
-	}
-
-	return syncedBlocks, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/mountstats.go b/vendor/github.com/prometheus/procfs/mountstats.go
deleted file mode 100644
index 6b2b0ba9d..000000000
--- a/vendor/github.com/prometheus/procfs/mountstats.go
+++ /dev/null
@@ -1,556 +0,0 @@
-package procfs
-
-// While implementing parsing of /proc/[pid]/mountstats, this blog was used
-// heavily as a reference:
-//   https://utcc.utoronto.ca/~cks/space/blog/linux/NFSMountstatsIndex
-//
-// Special thanks to Chris Siebenmann for all of his posts explaining the
-// various statistics available for NFS.
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"strconv"
-	"strings"
-	"time"
-)
-
-// Constants shared between multiple functions.
-const (
-	deviceEntryLen = 8
-
-	fieldBytesLen  = 8
-	fieldEventsLen = 27
-
-	statVersion10 = "1.0"
-	statVersion11 = "1.1"
-
-	fieldTransport10Len = 10
-	fieldTransport11Len = 13
-)
-
-// A Mount is a device mount parsed from /proc/[pid]/mountstats.
-type Mount struct {
-	// Name of the device.
-	Device string
-	// The mount point of the device.
-	Mount string
-	// The filesystem type used by the device.
-	Type string
-	// If available additional statistics related to this Mount.
-	// Use a type assertion to determine if additional statistics are available.
-	Stats MountStats
-}
-
-// A MountStats is a type which contains detailed statistics for a specific
-// type of Mount.
-type MountStats interface {
-	mountStats()
-}
-
-// A MountStatsNFS is a MountStats implementation for NFSv3 and v4 mounts.
-type MountStatsNFS struct {
-	// The version of statistics provided.
-	StatVersion string
-	// The age of the NFS mount.
-	Age time.Duration
-	// Statistics related to byte counters for various operations.
-	Bytes NFSBytesStats
-	// Statistics related to various NFS event occurrences.
-	Events NFSEventsStats
-	// Statistics broken down by filesystem operation.
-	Operations []NFSOperationStats
-	// Statistics about the NFS RPC transport.
-	Transport NFSTransportStats
-}
-
-// mountStats implements MountStats.
-func (m MountStatsNFS) mountStats() {}
-
-// A NFSBytesStats contains statistics about the number of bytes read and written
-// by an NFS client to and from an NFS server.
-type NFSBytesStats struct {
-	// Number of bytes read using the read() syscall.
-	Read uint64
-	// Number of bytes written using the write() syscall.
-	Write uint64
-	// Number of bytes read using the read() syscall in O_DIRECT mode.
-	DirectRead uint64
-	// Number of bytes written using the write() syscall in O_DIRECT mode.
-	DirectWrite uint64
-	// Number of bytes read from the NFS server, in total.
-	ReadTotal uint64
-	// Number of bytes written to the NFS server, in total.
-	WriteTotal uint64
-	// Number of pages read directly via mmap()'d files.
-	ReadPages uint64
-	// Number of pages written directly via mmap()'d files.
-	WritePages uint64
-}
-
-// A NFSEventsStats contains statistics about NFS event occurrences.
-type NFSEventsStats struct {
-	// Number of times cached inode attributes are re-validated from the server.
-	InodeRevalidate uint64
-	// Number of times cached dentry nodes are re-validated from the server.
-	DnodeRevalidate uint64
-	// Number of times an inode cache is cleared.
-	DataInvalidate uint64
-	// Number of times cached inode attributes are invalidated.
-	AttributeInvalidate uint64
-	// Number of times files or directories have been open()'d.
-	VFSOpen uint64
-	// Number of times a directory lookup has occurred.
-	VFSLookup uint64
-	// Number of times permissions have been checked.
-	VFSAccess uint64
-	// Number of updates (and potential writes) to pages.
-	VFSUpdatePage uint64
-	// Number of pages read directly via mmap()'d files.
-	VFSReadPage uint64
-	// Number of times a group of pages have been read.
-	VFSReadPages uint64
-	// Number of pages written directly via mmap()'d files.
-	VFSWritePage uint64
-	// Number of times a group of pages have been written.
-	VFSWritePages uint64
-	// Number of times directory entries have been read with getdents().
-	VFSGetdents uint64
-	// Number of times attributes have been set on inodes.
-	VFSSetattr uint64
-	// Number of pending writes that have been forcefully flushed to the server.
-	VFSFlush uint64
-	// Number of times fsync() has been called on directories and files.
-	VFSFsync uint64
-	// Number of times locking has been attempted on a file.
-	VFSLock uint64
-	// Number of times files have been closed and released.
-	VFSFileRelease uint64
-	// Unknown.  Possibly unused.
-	CongestionWait uint64
-	// Number of times files have been truncated.
-	Truncation uint64
-	// Number of times a file has been grown due to writes beyond its existing end.
-	WriteExtension uint64
-	// Number of times a file was removed while still open by another process.
-	SillyRename uint64
-	// Number of times the NFS server gave less data than expected while reading.
-	ShortRead uint64
-	// Number of times the NFS server wrote less data than expected while writing.
-	ShortWrite uint64
-	// Number of times the NFS server indicated EJUKEBOX; retrieving data from
-	// offline storage.
-	JukeboxDelay uint64
-	// Number of NFS v4.1+ pNFS reads.
-	PNFSRead uint64
-	// Number of NFS v4.1+ pNFS writes.
-	PNFSWrite uint64
-}
-
-// A NFSOperationStats contains statistics for a single operation.
-type NFSOperationStats struct {
-	// The name of the operation.
-	Operation string
-	// Number of requests performed for this operation.
-	Requests uint64
-	// Number of times an actual RPC request has been transmitted for this operation.
-	Transmissions uint64
-	// Number of times a request has had a major timeout.
-	MajorTimeouts uint64
-	// Number of bytes sent for this operation, including RPC headers and payload.
-	BytesSent uint64
-	// Number of bytes received for this operation, including RPC headers and payload.
-	BytesReceived uint64
-	// Duration all requests spent queued for transmission before they were sent.
-	CumulativeQueueTime time.Duration
-	// Duration it took to get a reply back after the request was transmitted.
-	CumulativeTotalResponseTime time.Duration
-	// Duration from when a request was enqueued to when it was completely handled.
-	CumulativeTotalRequestTime time.Duration
-}
-
-// A NFSTransportStats contains statistics for the NFS mount RPC requests and
-// responses.
-type NFSTransportStats struct {
-	// The local port used for the NFS mount.
-	Port uint64
-	// Number of times the client has had to establish a connection from scratch
-	// to the NFS server.
-	Bind uint64
-	// Number of times the client has made a TCP connection to the NFS server.
-	Connect uint64
-	// Duration (in jiffies, a kernel internal unit of time) the NFS mount has
-	// spent waiting for connections to the server to be established.
-	ConnectIdleTime uint64
-	// Duration since the NFS mount last saw any RPC traffic.
-	IdleTime time.Duration
-	// Number of RPC requests for this mount sent to the NFS server.
-	Sends uint64
-	// Number of RPC responses for this mount received from the NFS server.
-	Receives uint64
-	// Number of times the NFS server sent a response with a transaction ID
-	// unknown to this client.
-	BadTransactionIDs uint64
-	// A running counter, incremented on each request as the current difference
-	// ebetween sends and receives.
-	CumulativeActiveRequests uint64
-	// A running counter, incremented on each request by the current backlog
-	// queue size.
-	CumulativeBacklog uint64
-
-	// Stats below only available with stat version 1.1.
-
-	// Maximum number of simultaneously active RPC requests ever used.
-	MaximumRPCSlotsUsed uint64
-	// A running counter, incremented on each request as the current size of the
-	// sending queue.
-	CumulativeSendingQueue uint64
-	// A running counter, incremented on each request as the current size of the
-	// pending queue.
-	CumulativePendingQueue uint64
-}
-
-// parseMountStats parses a /proc/[pid]/mountstats file and returns a slice
-// of Mount structures containing detailed information about each mount.
-// If available, statistics for each mount are parsed as well.
-func parseMountStats(r io.Reader) ([]*Mount, error) {
-	const (
-		device            = "device"
-		statVersionPrefix = "statvers="
-
-		nfs3Type = "nfs"
-		nfs4Type = "nfs4"
-	)
-
-	var mounts []*Mount
-
-	s := bufio.NewScanner(r)
-	for s.Scan() {
-		// Only look for device entries in this function
-		ss := strings.Fields(string(s.Bytes()))
-		if len(ss) == 0 || ss[0] != device {
-			continue
-		}
-
-		m, err := parseMount(ss)
-		if err != nil {
-			return nil, err
-		}
-
-		// Does this mount also possess statistics information?
-		if len(ss) > deviceEntryLen {
-			// Only NFSv3 and v4 are supported for parsing statistics
-			if m.Type != nfs3Type && m.Type != nfs4Type {
-				return nil, fmt.Errorf("cannot parse MountStats for fstype %q", m.Type)
-			}
-
-			statVersion := strings.TrimPrefix(ss[8], statVersionPrefix)
-
-			stats, err := parseMountStatsNFS(s, statVersion)
-			if err != nil {
-				return nil, err
-			}
-
-			m.Stats = stats
-		}
-
-		mounts = append(mounts, m)
-	}
-
-	return mounts, s.Err()
-}
-
-// parseMount parses an entry in /proc/[pid]/mountstats in the format:
-//   device [device] mounted on [mount] with fstype [type]
-func parseMount(ss []string) (*Mount, error) {
-	if len(ss) < deviceEntryLen {
-		return nil, fmt.Errorf("invalid device entry: %v", ss)
-	}
-
-	// Check for specific words appearing at specific indices to ensure
-	// the format is consistent with what we expect
-	format := []struct {
-		i int
-		s string
-	}{
-		{i: 0, s: "device"},
-		{i: 2, s: "mounted"},
-		{i: 3, s: "on"},
-		{i: 5, s: "with"},
-		{i: 6, s: "fstype"},
-	}
-
-	for _, f := range format {
-		if ss[f.i] != f.s {
-			return nil, fmt.Errorf("invalid device entry: %v", ss)
-		}
-	}
-
-	return &Mount{
-		Device: ss[1],
-		Mount:  ss[4],
-		Type:   ss[7],
-	}, nil
-}
-
-// parseMountStatsNFS parses a MountStatsNFS by scanning additional information
-// related to NFS statistics.
-func parseMountStatsNFS(s *bufio.Scanner, statVersion string) (*MountStatsNFS, error) {
-	// Field indicators for parsing specific types of data
-	const (
-		fieldAge        = "age:"
-		fieldBytes      = "bytes:"
-		fieldEvents     = "events:"
-		fieldPerOpStats = "per-op"
-		fieldTransport  = "xprt:"
-	)
-
-	stats := &MountStatsNFS{
-		StatVersion: statVersion,
-	}
-
-	for s.Scan() {
-		ss := strings.Fields(string(s.Bytes()))
-		if len(ss) == 0 {
-			break
-		}
-		if len(ss) < 2 {
-			return nil, fmt.Errorf("not enough information for NFS stats: %v", ss)
-		}
-
-		switch ss[0] {
-		case fieldAge:
-			// Age integer is in seconds
-			d, err := time.ParseDuration(ss[1] + "s")
-			if err != nil {
-				return nil, err
-			}
-
-			stats.Age = d
-		case fieldBytes:
-			bstats, err := parseNFSBytesStats(ss[1:])
-			if err != nil {
-				return nil, err
-			}
-
-			stats.Bytes = *bstats
-		case fieldEvents:
-			estats, err := parseNFSEventsStats(ss[1:])
-			if err != nil {
-				return nil, err
-			}
-
-			stats.Events = *estats
-		case fieldTransport:
-			if len(ss) < 3 {
-				return nil, fmt.Errorf("not enough information for NFS transport stats: %v", ss)
-			}
-
-			tstats, err := parseNFSTransportStats(ss[2:], statVersion)
-			if err != nil {
-				return nil, err
-			}
-
-			stats.Transport = *tstats
-		}
-
-		// When encountering "per-operation statistics", we must break this
-		// loop and parse them separately to ensure we can terminate parsing
-		// before reaching another device entry; hence why this 'if' statement
-		// is not just another switch case
-		if ss[0] == fieldPerOpStats {
-			break
-		}
-	}
-
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-
-	// NFS per-operation stats appear last before the next device entry
-	perOpStats, err := parseNFSOperationStats(s)
-	if err != nil {
-		return nil, err
-	}
-
-	stats.Operations = perOpStats
-
-	return stats, nil
-}
-
-// parseNFSBytesStats parses a NFSBytesStats line using an input set of
-// integer fields.
-func parseNFSBytesStats(ss []string) (*NFSBytesStats, error) {
-	if len(ss) != fieldBytesLen {
-		return nil, fmt.Errorf("invalid NFS bytes stats: %v", ss)
-	}
-
-	ns := make([]uint64, 0, fieldBytesLen)
-	for _, s := range ss {
-		n, err := strconv.ParseUint(s, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		ns = append(ns, n)
-	}
-
-	return &NFSBytesStats{
-		Read:        ns[0],
-		Write:       ns[1],
-		DirectRead:  ns[2],
-		DirectWrite: ns[3],
-		ReadTotal:   ns[4],
-		WriteTotal:  ns[5],
-		ReadPages:   ns[6],
-		WritePages:  ns[7],
-	}, nil
-}
-
-// parseNFSEventsStats parses a NFSEventsStats line using an input set of
-// integer fields.
-func parseNFSEventsStats(ss []string) (*NFSEventsStats, error) {
-	if len(ss) != fieldEventsLen {
-		return nil, fmt.Errorf("invalid NFS events stats: %v", ss)
-	}
-
-	ns := make([]uint64, 0, fieldEventsLen)
-	for _, s := range ss {
-		n, err := strconv.ParseUint(s, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		ns = append(ns, n)
-	}
-
-	return &NFSEventsStats{
-		InodeRevalidate:     ns[0],
-		DnodeRevalidate:     ns[1],
-		DataInvalidate:      ns[2],
-		AttributeInvalidate: ns[3],
-		VFSOpen:             ns[4],
-		VFSLookup:           ns[5],
-		VFSAccess:           ns[6],
-		VFSUpdatePage:       ns[7],
-		VFSReadPage:         ns[8],
-		VFSReadPages:        ns[9],
-		VFSWritePage:        ns[10],
-		VFSWritePages:       ns[11],
-		VFSGetdents:         ns[12],
-		VFSSetattr:          ns[13],
-		VFSFlush:            ns[14],
-		VFSFsync:            ns[15],
-		VFSLock:             ns[16],
-		VFSFileRelease:      ns[17],
-		CongestionWait:      ns[18],
-		Truncation:          ns[19],
-		WriteExtension:      ns[20],
-		SillyRename:         ns[21],
-		ShortRead:           ns[22],
-		ShortWrite:          ns[23],
-		JukeboxDelay:        ns[24],
-		PNFSRead:            ns[25],
-		PNFSWrite:           ns[26],
-	}, nil
-}
-
-// parseNFSOperationStats parses a slice of NFSOperationStats by scanning
-// additional information about per-operation statistics until an empty
-// line is reached.
-func parseNFSOperationStats(s *bufio.Scanner) ([]NFSOperationStats, error) {
-	const (
-		// Number of expected fields in each per-operation statistics set
-		numFields = 9
-	)
-
-	var ops []NFSOperationStats
-
-	for s.Scan() {
-		ss := strings.Fields(string(s.Bytes()))
-		if len(ss) == 0 {
-			// Must break when reading a blank line after per-operation stats to
-			// enable top-level function to parse the next device entry
-			break
-		}
-
-		if len(ss) != numFields {
-			return nil, fmt.Errorf("invalid NFS per-operations stats: %v", ss)
-		}
-
-		// Skip string operation name for integers
-		ns := make([]uint64, 0, numFields-1)
-		for _, st := range ss[1:] {
-			n, err := strconv.ParseUint(st, 10, 64)
-			if err != nil {
-				return nil, err
-			}
-
-			ns = append(ns, n)
-		}
-
-		ops = append(ops, NFSOperationStats{
-			Operation:                   strings.TrimSuffix(ss[0], ":"),
-			Requests:                    ns[0],
-			Transmissions:               ns[1],
-			MajorTimeouts:               ns[2],
-			BytesSent:                   ns[3],
-			BytesReceived:               ns[4],
-			CumulativeQueueTime:         time.Duration(ns[5]) * time.Millisecond,
-			CumulativeTotalResponseTime: time.Duration(ns[6]) * time.Millisecond,
-			CumulativeTotalRequestTime:  time.Duration(ns[7]) * time.Millisecond,
-		})
-	}
-
-	return ops, s.Err()
-}
-
-// parseNFSTransportStats parses a NFSTransportStats line using an input set of
-// integer fields matched to a specific stats version.
-func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats, error) {
-	switch statVersion {
-	case statVersion10:
-		if len(ss) != fieldTransport10Len {
-			return nil, fmt.Errorf("invalid NFS transport stats 1.0 statement: %v", ss)
-		}
-	case statVersion11:
-		if len(ss) != fieldTransport11Len {
-			return nil, fmt.Errorf("invalid NFS transport stats 1.1 statement: %v", ss)
-		}
-	default:
-		return nil, fmt.Errorf("unrecognized NFS transport stats version: %q", statVersion)
-	}
-
-	// Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay
-	// in a v1.0 response.
-	//
-	// Note: slice length must be set to length of v1.1 stats to avoid a panic when
-	// only v1.0 stats are present.
-	// See: https://github.com/prometheus/node_exporter/issues/571.
-	ns := make([]uint64, fieldTransport11Len)
-	for i, s := range ss {
-		n, err := strconv.ParseUint(s, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		ns[i] = n
-	}
-
-	return &NFSTransportStats{
-		Port:                     ns[0],
-		Bind:                     ns[1],
-		Connect:                  ns[2],
-		ConnectIdleTime:          ns[3],
-		IdleTime:                 time.Duration(ns[4]) * time.Second,
-		Sends:                    ns[5],
-		Receives:                 ns[6],
-		BadTransactionIDs:        ns[7],
-		CumulativeActiveRequests: ns[8],
-		CumulativeBacklog:        ns[9],
-		MaximumRPCSlotsUsed:      ns[10],
-		CumulativeSendingQueue:   ns[11],
-		CumulativePendingQueue:   ns[12],
-	}, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/proc.go b/vendor/github.com/prometheus/procfs/proc.go
deleted file mode 100644
index 8717e1fe0..000000000
--- a/vendor/github.com/prometheus/procfs/proc.go
+++ /dev/null
@@ -1,224 +0,0 @@
-package procfs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// Proc provides information about a running process.
-type Proc struct {
-	// The process ID.
-	PID int
-
-	fs FS
-}
-
-// Procs represents a list of Proc structs.
-type Procs []Proc
-
-func (p Procs) Len() int           { return len(p) }
-func (p Procs) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
-func (p Procs) Less(i, j int) bool { return p[i].PID < p[j].PID }
-
-// Self returns a process for the current process read via /proc/self.
-func Self() (Proc, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return Proc{}, err
-	}
-	return fs.Self()
-}
-
-// NewProc returns a process for the given pid under /proc.
-func NewProc(pid int) (Proc, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return Proc{}, err
-	}
-	return fs.NewProc(pid)
-}
-
-// AllProcs returns a list of all currently available processes under /proc.
-func AllProcs() (Procs, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return Procs{}, err
-	}
-	return fs.AllProcs()
-}
-
-// Self returns a process for the current process.
-func (fs FS) Self() (Proc, error) {
-	p, err := os.Readlink(fs.Path("self"))
-	if err != nil {
-		return Proc{}, err
-	}
-	pid, err := strconv.Atoi(strings.Replace(p, string(fs), "", -1))
-	if err != nil {
-		return Proc{}, err
-	}
-	return fs.NewProc(pid)
-}
-
-// NewProc returns a process for the given pid.
-func (fs FS) NewProc(pid int) (Proc, error) {
-	if _, err := os.Stat(fs.Path(strconv.Itoa(pid))); err != nil {
-		return Proc{}, err
-	}
-	return Proc{PID: pid, fs: fs}, nil
-}
-
-// AllProcs returns a list of all currently available processes.
-func (fs FS) AllProcs() (Procs, error) {
-	d, err := os.Open(fs.Path())
-	if err != nil {
-		return Procs{}, err
-	}
-	defer d.Close()
-
-	names, err := d.Readdirnames(-1)
-	if err != nil {
-		return Procs{}, fmt.Errorf("could not read %s: %s", d.Name(), err)
-	}
-
-	p := Procs{}
-	for _, n := range names {
-		pid, err := strconv.ParseInt(n, 10, 64)
-		if err != nil {
-			continue
-		}
-		p = append(p, Proc{PID: int(pid), fs: fs})
-	}
-
-	return p, nil
-}
-
-// CmdLine returns the command line of a process.
-func (p Proc) CmdLine() ([]string, error) {
-	f, err := os.Open(p.path("cmdline"))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	data, err := ioutil.ReadAll(f)
-	if err != nil {
-		return nil, err
-	}
-
-	if len(data) < 1 {
-		return []string{}, nil
-	}
-
-	return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil
-}
-
-// Comm returns the command name of a process.
-func (p Proc) Comm() (string, error) {
-	f, err := os.Open(p.path("comm"))
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	data, err := ioutil.ReadAll(f)
-	if err != nil {
-		return "", err
-	}
-
-	return strings.TrimSpace(string(data)), nil
-}
-
-// Executable returns the absolute path of the executable command of a process.
-func (p Proc) Executable() (string, error) {
-	exe, err := os.Readlink(p.path("exe"))
-	if os.IsNotExist(err) {
-		return "", nil
-	}
-
-	return exe, err
-}
-
-// FileDescriptors returns the currently open file descriptors of a process.
-func (p Proc) FileDescriptors() ([]uintptr, error) {
-	names, err := p.fileDescriptors()
-	if err != nil {
-		return nil, err
-	}
-
-	fds := make([]uintptr, len(names))
-	for i, n := range names {
-		fd, err := strconv.ParseInt(n, 10, 32)
-		if err != nil {
-			return nil, fmt.Errorf("could not parse fd %s: %s", n, err)
-		}
-		fds[i] = uintptr(fd)
-	}
-
-	return fds, nil
-}
-
-// FileDescriptorTargets returns the targets of all file descriptors of a process.
-// If a file descriptor is not a symlink to a file (like a socket), that value will be the empty string.
-func (p Proc) FileDescriptorTargets() ([]string, error) {
-	names, err := p.fileDescriptors()
-	if err != nil {
-		return nil, err
-	}
-
-	targets := make([]string, len(names))
-
-	for i, name := range names {
-		target, err := os.Readlink(p.path("fd", name))
-		if err == nil {
-			targets[i] = target
-		}
-	}
-
-	return targets, nil
-}
-
-// FileDescriptorsLen returns the number of currently open file descriptors of
-// a process.
-func (p Proc) FileDescriptorsLen() (int, error) {
-	fds, err := p.fileDescriptors()
-	if err != nil {
-		return 0, err
-	}
-
-	return len(fds), nil
-}
-
-// MountStats retrieves statistics and configuration for mount points in a
-// process's namespace.
-func (p Proc) MountStats() ([]*Mount, error) {
-	f, err := os.Open(p.path("mountstats"))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	return parseMountStats(f)
-}
-
-func (p Proc) fileDescriptors() ([]string, error) {
-	d, err := os.Open(p.path("fd"))
-	if err != nil {
-		return nil, err
-	}
-	defer d.Close()
-
-	names, err := d.Readdirnames(-1)
-	if err != nil {
-		return nil, fmt.Errorf("could not read %s: %s", d.Name(), err)
-	}
-
-	return names, nil
-}
-
-func (p Proc) path(pa ...string) string {
-	return p.fs.Path(append([]string{strconv.Itoa(p.PID)}, pa...)...)
-}
diff --git a/vendor/github.com/prometheus/procfs/proc_io.go b/vendor/github.com/prometheus/procfs/proc_io.go
deleted file mode 100644
index b4e31d7ba..000000000
--- a/vendor/github.com/prometheus/procfs/proc_io.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package procfs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"os"
-)
-
-// ProcIO models the content of /proc/<pid>/io.
-type ProcIO struct {
-	// Chars read.
-	RChar uint64
-	// Chars written.
-	WChar uint64
-	// Read syscalls.
-	SyscR uint64
-	// Write syscalls.
-	SyscW uint64
-	// Bytes read.
-	ReadBytes uint64
-	// Bytes written.
-	WriteBytes uint64
-	// Bytes written, but taking into account truncation. See
-	// Documentation/filesystems/proc.txt in the kernel sources for
-	// detailed explanation.
-	CancelledWriteBytes int64
-}
-
-// NewIO creates a new ProcIO instance from a given Proc instance.
-func (p Proc) NewIO() (ProcIO, error) {
-	pio := ProcIO{}
-
-	f, err := os.Open(p.path("io"))
-	if err != nil {
-		return pio, err
-	}
-	defer f.Close()
-
-	data, err := ioutil.ReadAll(f)
-	if err != nil {
-		return pio, err
-	}
-
-	ioFormat := "rchar: %d\nwchar: %d\nsyscr: %d\nsyscw: %d\n" +
-		"read_bytes: %d\nwrite_bytes: %d\n" +
-		"cancelled_write_bytes: %d\n"
-
-	_, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR,
-		&pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes)
-	if err != nil {
-		return pio, err
-	}
-
-	return pio, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/proc_limits.go b/vendor/github.com/prometheus/procfs/proc_limits.go
deleted file mode 100644
index 2df997ce1..000000000
--- a/vendor/github.com/prometheus/procfs/proc_limits.go
+++ /dev/null
@@ -1,137 +0,0 @@
-package procfs
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"regexp"
-	"strconv"
-)
-
-// ProcLimits represents the soft limits for each of the process's resource
-// limits. For more information see getrlimit(2):
-// http://man7.org/linux/man-pages/man2/getrlimit.2.html.
-type ProcLimits struct {
-	// CPU time limit in seconds.
-	CPUTime int
-	// Maximum size of files that the process may create.
-	FileSize int
-	// Maximum size of the process's data segment (initialized data,
-	// uninitialized data, and heap).
-	DataSize int
-	// Maximum size of the process stack in bytes.
-	StackSize int
-	// Maximum size of a core file.
-	CoreFileSize int
-	// Limit of the process's resident set in pages.
-	ResidentSet int
-	// Maximum number of processes that can be created for the real user ID of
-	// the calling process.
-	Processes int
-	// Value one greater than the maximum file descriptor number that can be
-	// opened by this process.
-	OpenFiles int
-	// Maximum number of bytes of memory that may be locked into RAM.
-	LockedMemory int
-	// Maximum size of the process's virtual memory address space in bytes.
-	AddressSpace int
-	// Limit on the combined number of flock(2) locks and fcntl(2) leases that
-	// this process may establish.
-	FileLocks int
-	// Limit of signals that may be queued for the real user ID of the calling
-	// process.
-	PendingSignals int
-	// Limit on the number of bytes that can be allocated for POSIX message
-	// queues for the real user ID of the calling process.
-	MsqqueueSize int
-	// Limit of the nice priority set using setpriority(2) or nice(2).
-	NicePriority int
-	// Limit of the real-time priority set using sched_setscheduler(2) or
-	// sched_setparam(2).
-	RealtimePriority int
-	// Limit (in microseconds) on the amount of CPU time that a process
-	// scheduled under a real-time scheduling policy may consume without making
-	// a blocking system call.
-	RealtimeTimeout int
-}
-
-const (
-	limitsFields    = 3
-	limitsUnlimited = "unlimited"
-)
-
-var (
-	limitsDelimiter = regexp.MustCompile("  +")
-)
-
-// NewLimits returns the current soft limits of the process.
-func (p Proc) NewLimits() (ProcLimits, error) {
-	f, err := os.Open(p.path("limits"))
-	if err != nil {
-		return ProcLimits{}, err
-	}
-	defer f.Close()
-
-	var (
-		l = ProcLimits{}
-		s = bufio.NewScanner(f)
-	)
-	for s.Scan() {
-		fields := limitsDelimiter.Split(s.Text(), limitsFields)
-		if len(fields) != limitsFields {
-			return ProcLimits{}, fmt.Errorf(
-				"couldn't parse %s line %s", f.Name(), s.Text())
-		}
-
-		switch fields[0] {
-		case "Max cpu time":
-			l.CPUTime, err = parseInt(fields[1])
-		case "Max file size":
-			l.FileSize, err = parseInt(fields[1])
-		case "Max data size":
-			l.DataSize, err = parseInt(fields[1])
-		case "Max stack size":
-			l.StackSize, err = parseInt(fields[1])
-		case "Max core file size":
-			l.CoreFileSize, err = parseInt(fields[1])
-		case "Max resident set":
-			l.ResidentSet, err = parseInt(fields[1])
-		case "Max processes":
-			l.Processes, err = parseInt(fields[1])
-		case "Max open files":
-			l.OpenFiles, err = parseInt(fields[1])
-		case "Max locked memory":
-			l.LockedMemory, err = parseInt(fields[1])
-		case "Max address space":
-			l.AddressSpace, err = parseInt(fields[1])
-		case "Max file locks":
-			l.FileLocks, err = parseInt(fields[1])
-		case "Max pending signals":
-			l.PendingSignals, err = parseInt(fields[1])
-		case "Max msgqueue size":
-			l.MsqqueueSize, err = parseInt(fields[1])
-		case "Max nice priority":
-			l.NicePriority, err = parseInt(fields[1])
-		case "Max realtime priority":
-			l.RealtimePriority, err = parseInt(fields[1])
-		case "Max realtime timeout":
-			l.RealtimeTimeout, err = parseInt(fields[1])
-		}
-		if err != nil {
-			return ProcLimits{}, err
-		}
-	}
-
-	return l, s.Err()
-}
-
-func parseInt(s string) (int, error) {
-	if s == limitsUnlimited {
-		return -1, nil
-	}
-	i, err := strconv.ParseInt(s, 10, 32)
-	if err != nil {
-		return 0, fmt.Errorf("couldn't parse value %s: %s", s, err)
-	}
-	return int(i), nil
-}
diff --git a/vendor/github.com/prometheus/procfs/proc_stat.go b/vendor/github.com/prometheus/procfs/proc_stat.go
deleted file mode 100644
index 724e271b9..000000000
--- a/vendor/github.com/prometheus/procfs/proc_stat.go
+++ /dev/null
@@ -1,175 +0,0 @@
-package procfs
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"os"
-)
-
-// Originally, this USER_HZ value was dynamically retrieved via a sysconf call
-// which required cgo. However, that caused a lot of problems regarding
-// cross-compilation. Alternatives such as running a binary to determine the
-// value, or trying to derive it in some other way were all problematic.  After
-// much research it was determined that USER_HZ is actually hardcoded to 100 on
-// all Go-supported platforms as of the time of this writing. This is why we
-// decided to hardcode it here as well. It is not impossible that there could
-// be systems with exceptions, but they should be very exotic edge cases, and
-// in that case, the worst outcome will be two misreported metrics.
-//
-// See also the following discussions:
-//
-// - https://github.com/prometheus/node_exporter/issues/52
-// - https://github.com/prometheus/procfs/pull/2
-// - http://stackoverflow.com/questions/17410841/how-does-user-hz-solve-the-jiffy-scaling-issue
-const userHZ = 100
-
-// ProcStat provides status information about the process,
-// read from /proc/[pid]/stat.
-type ProcStat struct {
-	// The process ID.
-	PID int
-	// The filename of the executable.
-	Comm string
-	// The process state.
-	State string
-	// The PID of the parent of this process.
-	PPID int
-	// The process group ID of the process.
-	PGRP int
-	// The session ID of the process.
-	Session int
-	// The controlling terminal of the process.
-	TTY int
-	// The ID of the foreground process group of the controlling terminal of
-	// the process.
-	TPGID int
-	// The kernel flags word of the process.
-	Flags uint
-	// The number of minor faults the process has made which have not required
-	// loading a memory page from disk.
-	MinFlt uint
-	// The number of minor faults that the process's waited-for children have
-	// made.
-	CMinFlt uint
-	// The number of major faults the process has made which have required
-	// loading a memory page from disk.
-	MajFlt uint
-	// The number of major faults that the process's waited-for children have
-	// made.
-	CMajFlt uint
-	// Amount of time that this process has been scheduled in user mode,
-	// measured in clock ticks.
-	UTime uint
-	// Amount of time that this process has been scheduled in kernel mode,
-	// measured in clock ticks.
-	STime uint
-	// Amount of time that this process's waited-for children have been
-	// scheduled in user mode, measured in clock ticks.
-	CUTime uint
-	// Amount of time that this process's waited-for children have been
-	// scheduled in kernel mode, measured in clock ticks.
-	CSTime uint
-	// For processes running a real-time scheduling policy, this is the negated
-	// scheduling priority, minus one.
-	Priority int
-	// The nice value, a value in the range 19 (low priority) to -20 (high
-	// priority).
-	Nice int
-	// Number of threads in this process.
-	NumThreads int
-	// The time the process started after system boot, the value is expressed
-	// in clock ticks.
-	Starttime uint64
-	// Virtual memory size in bytes.
-	VSize int
-	// Resident set size in pages.
-	RSS int
-
-	fs FS
-}
-
-// NewStat returns the current status information of the process.
-func (p Proc) NewStat() (ProcStat, error) {
-	f, err := os.Open(p.path("stat"))
-	if err != nil {
-		return ProcStat{}, err
-	}
-	defer f.Close()
-
-	data, err := ioutil.ReadAll(f)
-	if err != nil {
-		return ProcStat{}, err
-	}
-
-	var (
-		ignore int
-
-		s = ProcStat{PID: p.PID, fs: p.fs}
-		l = bytes.Index(data, []byte("("))
-		r = bytes.LastIndex(data, []byte(")"))
-	)
-
-	if l < 0 || r < 0 {
-		return ProcStat{}, fmt.Errorf(
-			"unexpected format, couldn't extract comm: %s",
-			data,
-		)
-	}
-
-	s.Comm = string(data[l+1 : r])
-	_, err = fmt.Fscan(
-		bytes.NewBuffer(data[r+2:]),
-		&s.State,
-		&s.PPID,
-		&s.PGRP,
-		&s.Session,
-		&s.TTY,
-		&s.TPGID,
-		&s.Flags,
-		&s.MinFlt,
-		&s.CMinFlt,
-		&s.MajFlt,
-		&s.CMajFlt,
-		&s.UTime,
-		&s.STime,
-		&s.CUTime,
-		&s.CSTime,
-		&s.Priority,
-		&s.Nice,
-		&s.NumThreads,
-		&ignore,
-		&s.Starttime,
-		&s.VSize,
-		&s.RSS,
-	)
-	if err != nil {
-		return ProcStat{}, err
-	}
-
-	return s, nil
-}
-
-// VirtualMemory returns the virtual memory size in bytes.
-func (s ProcStat) VirtualMemory() int {
-	return s.VSize
-}
-
-// ResidentMemory returns the resident memory size in bytes.
-func (s ProcStat) ResidentMemory() int {
-	return s.RSS * os.Getpagesize()
-}
-
-// StartTime returns the unix timestamp of the process in seconds.
-func (s ProcStat) StartTime() (float64, error) {
-	stat, err := s.fs.NewStat()
-	if err != nil {
-		return 0, err
-	}
-	return float64(stat.BootTime) + (float64(s.Starttime) / userHZ), nil
-}
-
-// CPUTime returns the total CPU user and system time in seconds.
-func (s ProcStat) CPUTime() float64 {
-	return float64(s.UTime+s.STime) / userHZ
-}
diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go
deleted file mode 100644
index 1ca217e8c..000000000
--- a/vendor/github.com/prometheus/procfs/stat.go
+++ /dev/null
@@ -1,56 +0,0 @@
-package procfs
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// Stat represents kernel/system statistics.
-type Stat struct {
-	// Boot time in seconds since the Epoch.
-	BootTime int64
-}
-
-// NewStat returns kernel/system statistics read from /proc/stat.
-func NewStat() (Stat, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return Stat{}, err
-	}
-
-	return fs.NewStat()
-}
-
-// NewStat returns an information about current kernel/system statistics.
-func (fs FS) NewStat() (Stat, error) {
-	f, err := os.Open(fs.Path("stat"))
-	if err != nil {
-		return Stat{}, err
-	}
-	defer f.Close()
-
-	s := bufio.NewScanner(f)
-	for s.Scan() {
-		line := s.Text()
-		if !strings.HasPrefix(line, "btime") {
-			continue
-		}
-		fields := strings.Fields(line)
-		if len(fields) != 2 {
-			return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line)
-		}
-		i, err := strconv.ParseInt(fields[1], 10, 32)
-		if err != nil {
-			return Stat{}, fmt.Errorf("couldn't parse %s: %s", fields[1], err)
-		}
-		return Stat{BootTime: i}, nil
-	}
-	if err := s.Err(); err != nil {
-		return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
-	}
-
-	return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name())
-}
diff --git a/vendor/github.com/prometheus/procfs/xfrm.go b/vendor/github.com/prometheus/procfs/xfrm.go
deleted file mode 100644
index ffe9df50d..000000000
--- a/vendor/github.com/prometheus/procfs/xfrm.go
+++ /dev/null
@@ -1,187 +0,0 @@
-// Copyright 2017 Prometheus Team
-// 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.
-
-package procfs
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// XfrmStat models the contents of /proc/net/xfrm_stat.
-type XfrmStat struct {
-	// All errors which are not matched by other
-	XfrmInError int
-	// No buffer is left
-	XfrmInBufferError int
-	// Header Error
-	XfrmInHdrError int
-	// No state found
-	// i.e. either inbound SPI, address, or IPSEC protocol at SA is wrong
-	XfrmInNoStates int
-	// Transformation protocol specific error
-	// e.g. SA Key is wrong
-	XfrmInStateProtoError int
-	// Transformation mode specific error
-	XfrmInStateModeError int
-	// Sequence error
-	// e.g. sequence number is out of window
-	XfrmInStateSeqError int
-	// State is expired
-	XfrmInStateExpired int
-	// State has mismatch option
-	// e.g. UDP encapsulation type is mismatched
-	XfrmInStateMismatch int
-	// State is invalid
-	XfrmInStateInvalid int
-	// No matching template for states
-	// e.g. Inbound SAs are correct but SP rule is wrong
-	XfrmInTmplMismatch int
-	// No policy is found for states
-	// e.g. Inbound SAs are correct but no SP is found
-	XfrmInNoPols int
-	// Policy discards
-	XfrmInPolBlock int
-	// Policy error
-	XfrmInPolError int
-	// All errors which are not matched by others
-	XfrmOutError int
-	// Bundle generation error
-	XfrmOutBundleGenError int
-	// Bundle check error
-	XfrmOutBundleCheckError int
-	// No state was found
-	XfrmOutNoStates int
-	// Transformation protocol specific error
-	XfrmOutStateProtoError int
-	// Transportation mode specific error
-	XfrmOutStateModeError int
-	// Sequence error
-	// i.e sequence number overflow
-	XfrmOutStateSeqError int
-	// State is expired
-	XfrmOutStateExpired int
-	// Policy discads
-	XfrmOutPolBlock int
-	// Policy is dead
-	XfrmOutPolDead int
-	// Policy Error
-	XfrmOutPolError     int
-	XfrmFwdHdrError     int
-	XfrmOutStateInvalid int
-	XfrmAcquireError    int
-}
-
-// NewXfrmStat reads the xfrm_stat statistics.
-func NewXfrmStat() (XfrmStat, error) {
-	fs, err := NewFS(DefaultMountPoint)
-	if err != nil {
-		return XfrmStat{}, err
-	}
-
-	return fs.NewXfrmStat()
-}
-
-// NewXfrmStat reads the xfrm_stat statistics from the 'proc' filesystem.
-func (fs FS) NewXfrmStat() (XfrmStat, error) {
-	file, err := os.Open(fs.Path("net/xfrm_stat"))
-	if err != nil {
-		return XfrmStat{}, err
-	}
-	defer file.Close()
-
-	var (
-		x = XfrmStat{}
-		s = bufio.NewScanner(file)
-	)
-
-	for s.Scan() {
-		fields := strings.Fields(s.Text())
-
-		if len(fields) != 2 {
-			return XfrmStat{}, fmt.Errorf(
-				"couldnt parse %s line %s", file.Name(), s.Text())
-		}
-
-		name := fields[0]
-		value, err := strconv.Atoi(fields[1])
-		if err != nil {
-			return XfrmStat{}, err
-		}
-
-		switch name {
-		case "XfrmInError":
-			x.XfrmInError = value
-		case "XfrmInBufferError":
-			x.XfrmInBufferError = value
-		case "XfrmInHdrError":
-			x.XfrmInHdrError = value
-		case "XfrmInNoStates":
-			x.XfrmInNoStates = value
-		case "XfrmInStateProtoError":
-			x.XfrmInStateProtoError = value
-		case "XfrmInStateModeError":
-			x.XfrmInStateModeError = value
-		case "XfrmInStateSeqError":
-			x.XfrmInStateSeqError = value
-		case "XfrmInStateExpired":
-			x.XfrmInStateExpired = value
-		case "XfrmInStateInvalid":
-			x.XfrmInStateInvalid = value
-		case "XfrmInTmplMismatch":
-			x.XfrmInTmplMismatch = value
-		case "XfrmInNoPols":
-			x.XfrmInNoPols = value
-		case "XfrmInPolBlock":
-			x.XfrmInPolBlock = value
-		case "XfrmInPolError":
-			x.XfrmInPolError = value
-		case "XfrmOutError":
-			x.XfrmOutError = value
-		case "XfrmInStateMismatch":
-			x.XfrmInStateMismatch = value
-		case "XfrmOutBundleGenError":
-			x.XfrmOutBundleGenError = value
-		case "XfrmOutBundleCheckError":
-			x.XfrmOutBundleCheckError = value
-		case "XfrmOutNoStates":
-			x.XfrmOutNoStates = value
-		case "XfrmOutStateProtoError":
-			x.XfrmOutStateProtoError = value
-		case "XfrmOutStateModeError":
-			x.XfrmOutStateModeError = value
-		case "XfrmOutStateSeqError":
-			x.XfrmOutStateSeqError = value
-		case "XfrmOutStateExpired":
-			x.XfrmOutStateExpired = value
-		case "XfrmOutPolBlock":
-			x.XfrmOutPolBlock = value
-		case "XfrmOutPolDead":
-			x.XfrmOutPolDead = value
-		case "XfrmOutPolError":
-			x.XfrmOutPolError = value
-		case "XfrmFwdHdrError":
-			x.XfrmFwdHdrError = value
-		case "XfrmOutStateInvalid":
-			x.XfrmOutStateInvalid = value
-		case "XfrmAcquireError":
-			x.XfrmAcquireError = value
-		}
-
-	}
-
-	return x, s.Err()
-}
diff --git a/vendor/github.com/prometheus/procfs/xfs/parse.go b/vendor/github.com/prometheus/procfs/xfs/parse.go
deleted file mode 100644
index c8f6279f3..000000000
--- a/vendor/github.com/prometheus/procfs/xfs/parse.go
+++ /dev/null
@@ -1,359 +0,0 @@
-// Copyright 2017 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.
-
-package xfs
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"strconv"
-	"strings"
-)
-
-// ParseStats parses a Stats from an input io.Reader, using the format
-// found in /proc/fs/xfs/stat.
-func ParseStats(r io.Reader) (*Stats, error) {
-	const (
-		// Fields parsed into stats structures.
-		fieldExtentAlloc = "extent_alloc"
-		fieldAbt         = "abt"
-		fieldBlkMap      = "blk_map"
-		fieldBmbt        = "bmbt"
-		fieldDir         = "dir"
-		fieldTrans       = "trans"
-		fieldIg          = "ig"
-		fieldLog         = "log"
-		fieldRw          = "rw"
-		fieldAttr        = "attr"
-		fieldIcluster    = "icluster"
-		fieldVnodes      = "vnodes"
-		fieldBuf         = "buf"
-		fieldXpc         = "xpc"
-
-		// Unimplemented at this time due to lack of documentation.
-		fieldPushAil = "push_ail"
-		fieldXstrat  = "xstrat"
-		fieldAbtb2   = "abtb2"
-		fieldAbtc2   = "abtc2"
-		fieldBmbt2   = "bmbt2"
-		fieldIbt2    = "ibt2"
-		fieldFibt2   = "fibt2"
-		fieldQm      = "qm"
-		fieldDebug   = "debug"
-	)
-
-	var xfss Stats
-
-	s := bufio.NewScanner(r)
-	for s.Scan() {
-		// Expect at least a string label and a single integer value, ex:
-		//   - abt 0
-		//   - rw 1 2
-		ss := strings.Fields(string(s.Bytes()))
-		if len(ss) < 2 {
-			continue
-		}
-		label := ss[0]
-
-		// Extended precision counters are uint64 values.
-		if label == fieldXpc {
-			us, err := parseUint64s(ss[1:])
-			if err != nil {
-				return nil, err
-			}
-
-			xfss.ExtendedPrecision, err = extendedPrecisionStats(us)
-			if err != nil {
-				return nil, err
-			}
-
-			continue
-		}
-
-		// All other counters are uint32 values.
-		us, err := parseUint32s(ss[1:])
-		if err != nil {
-			return nil, err
-		}
-
-		switch label {
-		case fieldExtentAlloc:
-			xfss.ExtentAllocation, err = extentAllocationStats(us)
-		case fieldAbt:
-			xfss.AllocationBTree, err = btreeStats(us)
-		case fieldBlkMap:
-			xfss.BlockMapping, err = blockMappingStats(us)
-		case fieldBmbt:
-			xfss.BlockMapBTree, err = btreeStats(us)
-		case fieldDir:
-			xfss.DirectoryOperation, err = directoryOperationStats(us)
-		case fieldTrans:
-			xfss.Transaction, err = transactionStats(us)
-		case fieldIg:
-			xfss.InodeOperation, err = inodeOperationStats(us)
-		case fieldLog:
-			xfss.LogOperation, err = logOperationStats(us)
-		case fieldRw:
-			xfss.ReadWrite, err = readWriteStats(us)
-		case fieldAttr:
-			xfss.AttributeOperation, err = attributeOperationStats(us)
-		case fieldIcluster:
-			xfss.InodeClustering, err = inodeClusteringStats(us)
-		case fieldVnodes:
-			xfss.Vnode, err = vnodeStats(us)
-		case fieldBuf:
-			xfss.Buffer, err = bufferStats(us)
-		}
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return &xfss, s.Err()
-}
-
-// extentAllocationStats builds an ExtentAllocationStats from a slice of uint32s.
-func extentAllocationStats(us []uint32) (ExtentAllocationStats, error) {
-	if l := len(us); l != 4 {
-		return ExtentAllocationStats{}, fmt.Errorf("incorrect number of values for XFS extent allocation stats: %d", l)
-	}
-
-	return ExtentAllocationStats{
-		ExtentsAllocated: us[0],
-		BlocksAllocated:  us[1],
-		ExtentsFreed:     us[2],
-		BlocksFreed:      us[3],
-	}, nil
-}
-
-// btreeStats builds a BTreeStats from a slice of uint32s.
-func btreeStats(us []uint32) (BTreeStats, error) {
-	if l := len(us); l != 4 {
-		return BTreeStats{}, fmt.Errorf("incorrect number of values for XFS btree stats: %d", l)
-	}
-
-	return BTreeStats{
-		Lookups:         us[0],
-		Compares:        us[1],
-		RecordsInserted: us[2],
-		RecordsDeleted:  us[3],
-	}, nil
-}
-
-// BlockMappingStat builds a BlockMappingStats from a slice of uint32s.
-func blockMappingStats(us []uint32) (BlockMappingStats, error) {
-	if l := len(us); l != 7 {
-		return BlockMappingStats{}, fmt.Errorf("incorrect number of values for XFS block mapping stats: %d", l)
-	}
-
-	return BlockMappingStats{
-		Reads:                us[0],
-		Writes:               us[1],
-		Unmaps:               us[2],
-		ExtentListInsertions: us[3],
-		ExtentListDeletions:  us[4],
-		ExtentListLookups:    us[5],
-		ExtentListCompares:   us[6],
-	}, nil
-}
-
-// DirectoryOperationStats builds a DirectoryOperationStats from a slice of uint32s.
-func directoryOperationStats(us []uint32) (DirectoryOperationStats, error) {
-	if l := len(us); l != 4 {
-		return DirectoryOperationStats{}, fmt.Errorf("incorrect number of values for XFS directory operation stats: %d", l)
-	}
-
-	return DirectoryOperationStats{
-		Lookups:  us[0],
-		Creates:  us[1],
-		Removes:  us[2],
-		Getdents: us[3],
-	}, nil
-}
-
-// TransactionStats builds a TransactionStats from a slice of uint32s.
-func transactionStats(us []uint32) (TransactionStats, error) {
-	if l := len(us); l != 3 {
-		return TransactionStats{}, fmt.Errorf("incorrect number of values for XFS transaction stats: %d", l)
-	}
-
-	return TransactionStats{
-		Sync:  us[0],
-		Async: us[1],
-		Empty: us[2],
-	}, nil
-}
-
-// InodeOperationStats builds an InodeOperationStats from a slice of uint32s.
-func inodeOperationStats(us []uint32) (InodeOperationStats, error) {
-	if l := len(us); l != 7 {
-		return InodeOperationStats{}, fmt.Errorf("incorrect number of values for XFS inode operation stats: %d", l)
-	}
-
-	return InodeOperationStats{
-		Attempts:        us[0],
-		Found:           us[1],
-		Recycle:         us[2],
-		Missed:          us[3],
-		Duplicate:       us[4],
-		Reclaims:        us[5],
-		AttributeChange: us[6],
-	}, nil
-}
-
-// LogOperationStats builds a LogOperationStats from a slice of uint32s.
-func logOperationStats(us []uint32) (LogOperationStats, error) {
-	if l := len(us); l != 5 {
-		return LogOperationStats{}, fmt.Errorf("incorrect number of values for XFS log operation stats: %d", l)
-	}
-
-	return LogOperationStats{
-		Writes:            us[0],
-		Blocks:            us[1],
-		NoInternalBuffers: us[2],
-		Force:             us[3],
-		ForceSleep:        us[4],
-	}, nil
-}
-
-// ReadWriteStats builds a ReadWriteStats from a slice of uint32s.
-func readWriteStats(us []uint32) (ReadWriteStats, error) {
-	if l := len(us); l != 2 {
-		return ReadWriteStats{}, fmt.Errorf("incorrect number of values for XFS read write stats: %d", l)
-	}
-
-	return ReadWriteStats{
-		Read:  us[0],
-		Write: us[1],
-	}, nil
-}
-
-// AttributeOperationStats builds an AttributeOperationStats from a slice of uint32s.
-func attributeOperationStats(us []uint32) (AttributeOperationStats, error) {
-	if l := len(us); l != 4 {
-		return AttributeOperationStats{}, fmt.Errorf("incorrect number of values for XFS attribute operation stats: %d", l)
-	}
-
-	return AttributeOperationStats{
-		Get:    us[0],
-		Set:    us[1],
-		Remove: us[2],
-		List:   us[3],
-	}, nil
-}
-
-// InodeClusteringStats builds an InodeClusteringStats from a slice of uint32s.
-func inodeClusteringStats(us []uint32) (InodeClusteringStats, error) {
-	if l := len(us); l != 3 {
-		return InodeClusteringStats{}, fmt.Errorf("incorrect number of values for XFS inode clustering stats: %d", l)
-	}
-
-	return InodeClusteringStats{
-		Iflush:     us[0],
-		Flush:      us[1],
-		FlushInode: us[2],
-	}, nil
-}
-
-// VnodeStats builds a VnodeStats from a slice of uint32s.
-func vnodeStats(us []uint32) (VnodeStats, error) {
-	// The attribute "Free" appears to not be available on older XFS
-	// stats versions.  Therefore, 7 or 8 elements may appear in
-	// this slice.
-	l := len(us)
-	if l != 7 && l != 8 {
-		return VnodeStats{}, fmt.Errorf("incorrect number of values for XFS vnode stats: %d", l)
-	}
-
-	s := VnodeStats{
-		Active:   us[0],
-		Allocate: us[1],
-		Get:      us[2],
-		Hold:     us[3],
-		Release:  us[4],
-		Reclaim:  us[5],
-		Remove:   us[6],
-	}
-
-	// Skip adding free, unless it is present. The zero value will
-	// be used in place of an actual count.
-	if l == 7 {
-		return s, nil
-	}
-
-	s.Free = us[7]
-	return s, nil
-}
-
-// BufferStats builds a BufferStats from a slice of uint32s.
-func bufferStats(us []uint32) (BufferStats, error) {
-	if l := len(us); l != 9 {
-		return BufferStats{}, fmt.Errorf("incorrect number of values for XFS buffer stats: %d", l)
-	}
-
-	return BufferStats{
-		Get:             us[0],
-		Create:          us[1],
-		GetLocked:       us[2],
-		GetLockedWaited: us[3],
-		BusyLocked:      us[4],
-		MissLocked:      us[5],
-		PageRetries:     us[6],
-		PageFound:       us[7],
-		GetRead:         us[8],
-	}, nil
-}
-
-// ExtendedPrecisionStats builds an ExtendedPrecisionStats from a slice of uint32s.
-func extendedPrecisionStats(us []uint64) (ExtendedPrecisionStats, error) {
-	if l := len(us); l != 3 {
-		return ExtendedPrecisionStats{}, fmt.Errorf("incorrect number of values for XFS extended precision stats: %d", l)
-	}
-
-	return ExtendedPrecisionStats{
-		FlushBytes: us[0],
-		WriteBytes: us[1],
-		ReadBytes:  us[2],
-	}, nil
-}
-
-// parseUint32s parses a slice of strings into a slice of uint32s.
-func parseUint32s(ss []string) ([]uint32, error) {
-	us := make([]uint32, 0, len(ss))
-	for _, s := range ss {
-		u, err := strconv.ParseUint(s, 10, 32)
-		if err != nil {
-			return nil, err
-		}
-
-		us = append(us, uint32(u))
-	}
-
-	return us, nil
-}
-
-// parseUint64s parses a slice of strings into a slice of uint64s.
-func parseUint64s(ss []string) ([]uint64, error) {
-	us := make([]uint64, 0, len(ss))
-	for _, s := range ss {
-		u, err := strconv.ParseUint(s, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		us = append(us, u)
-	}
-
-	return us, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/xfs/xfs.go b/vendor/github.com/prometheus/procfs/xfs/xfs.go
deleted file mode 100644
index d86794b7c..000000000
--- a/vendor/github.com/prometheus/procfs/xfs/xfs.go
+++ /dev/null
@@ -1,163 +0,0 @@
-// Copyright 2017 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.
-
-// Package xfs provides access to statistics exposed by the XFS filesystem.
-package xfs
-
-// Stats contains XFS filesystem runtime statistics, parsed from
-// /proc/fs/xfs/stat.
-//
-// The names and meanings of each statistic were taken from
-// http://xfs.org/index.php/Runtime_Stats and xfs_stats.h in the Linux
-// kernel source. Most counters are uint32s (same data types used in
-// xfs_stats.h), but some of the "extended precision stats" are uint64s.
-type Stats struct {
-	// The name of the filesystem used to source these statistics.
-	// If empty, this indicates aggregated statistics for all XFS
-	// filesystems on the host.
-	Name string
-
-	ExtentAllocation   ExtentAllocationStats
-	AllocationBTree    BTreeStats
-	BlockMapping       BlockMappingStats
-	BlockMapBTree      BTreeStats
-	DirectoryOperation DirectoryOperationStats
-	Transaction        TransactionStats
-	InodeOperation     InodeOperationStats
-	LogOperation       LogOperationStats
-	ReadWrite          ReadWriteStats
-	AttributeOperation AttributeOperationStats
-	InodeClustering    InodeClusteringStats
-	Vnode              VnodeStats
-	Buffer             BufferStats
-	ExtendedPrecision  ExtendedPrecisionStats
-}
-
-// ExtentAllocationStats contains statistics regarding XFS extent allocations.
-type ExtentAllocationStats struct {
-	ExtentsAllocated uint32
-	BlocksAllocated  uint32
-	ExtentsFreed     uint32
-	BlocksFreed      uint32
-}
-
-// BTreeStats contains statistics regarding an XFS internal B-tree.
-type BTreeStats struct {
-	Lookups         uint32
-	Compares        uint32
-	RecordsInserted uint32
-	RecordsDeleted  uint32
-}
-
-// BlockMappingStats contains statistics regarding XFS block maps.
-type BlockMappingStats struct {
-	Reads                uint32
-	Writes               uint32
-	Unmaps               uint32
-	ExtentListInsertions uint32
-	ExtentListDeletions  uint32
-	ExtentListLookups    uint32
-	ExtentListCompares   uint32
-}
-
-// DirectoryOperationStats contains statistics regarding XFS directory entries.
-type DirectoryOperationStats struct {
-	Lookups  uint32
-	Creates  uint32
-	Removes  uint32
-	Getdents uint32
-}
-
-// TransactionStats contains statistics regarding XFS metadata transactions.
-type TransactionStats struct {
-	Sync  uint32
-	Async uint32
-	Empty uint32
-}
-
-// InodeOperationStats contains statistics regarding XFS inode operations.
-type InodeOperationStats struct {
-	Attempts        uint32
-	Found           uint32
-	Recycle         uint32
-	Missed          uint32
-	Duplicate       uint32
-	Reclaims        uint32
-	AttributeChange uint32
-}
-
-// LogOperationStats contains statistics regarding the XFS log buffer.
-type LogOperationStats struct {
-	Writes            uint32
-	Blocks            uint32
-	NoInternalBuffers uint32
-	Force             uint32
-	ForceSleep        uint32
-}
-
-// ReadWriteStats contains statistics regarding the number of read and write
-// system calls for XFS filesystems.
-type ReadWriteStats struct {
-	Read  uint32
-	Write uint32
-}
-
-// AttributeOperationStats contains statistics regarding manipulation of
-// XFS extended file attributes.
-type AttributeOperationStats struct {
-	Get    uint32
-	Set    uint32
-	Remove uint32
-	List   uint32
-}
-
-// InodeClusteringStats contains statistics regarding XFS inode clustering
-// operations.
-type InodeClusteringStats struct {
-	Iflush     uint32
-	Flush      uint32
-	FlushInode uint32
-}
-
-// VnodeStats contains statistics regarding XFS vnode operations.
-type VnodeStats struct {
-	Active   uint32
-	Allocate uint32
-	Get      uint32
-	Hold     uint32
-	Release  uint32
-	Reclaim  uint32
-	Remove   uint32
-	Free     uint32
-}
-
-// BufferStats contains statistics regarding XFS read/write I/O buffers.
-type BufferStats struct {
-	Get             uint32
-	Create          uint32
-	GetLocked       uint32
-	GetLockedWaited uint32
-	BusyLocked      uint32
-	MissLocked      uint32
-	PageRetries     uint32
-	PageFound       uint32
-	GetRead         uint32
-}
-
-// ExtendedPrecisionStats contains high precision counters used to track the
-// total number of bytes read, written, or flushed, during XFS operations.
-type ExtendedPrecisionStats struct {
-	FlushBytes uint64
-	WriteBytes uint64
-	ReadBytes  uint64
-}