diff --git a/sysinfo/sysinfo.go b/sysinfo/sysinfo.go
index 8f905aa..93bd37f 100644
--- a/sysinfo/sysinfo.go
+++ b/sysinfo/sysinfo.go
@@ -3,23 +3,43 @@ package sysinfo
 // SysInfo stores information about which features a kernel supports.
 // TODO Windows: Factor out platform specific capabilities.
 type SysInfo struct {
+	// Whether the kernel supports AppArmor or not
 	AppArmor bool
+
 	*cgroupMemInfo
-	*cgroupCpuInfo
-	IPv4ForwardingDisabled        bool
-	BridgeNfCallIptablesDisabled  bool
-	BridgeNfCallIp6tablesDisabled bool
-	CgroupDevicesEnabled          bool
+	*cgroupCPUInfo
+
+	// Whether IPv4 forwarding is supported or not, if this was disabled, networking will not work
+	IPv4ForwardingDisabled bool
+
+	// Whether bridge-nf-call-iptables is supported or not
+	BridgeNfCallIptablesDisabled bool
+
+	// Whether bridge-nf-call-ip6tables is supported or not
+	BridgeNfCallIP6tablesDisabled bool
+
+	// Whether the cgroup has the mountpoint of "devices" or not
+	CgroupDevicesEnabled bool
 }
 
 type cgroupMemInfo struct {
-	MemoryLimit      bool
-	SwapLimit        bool
-	OomKillDisable   bool
+	// Whether memory limit is supported or not
+	MemoryLimit bool
+
+	// Whether swap limit is supported or not
+	SwapLimit bool
+
+	// Whether OOM killer disalbe is supported or not
+	OomKillDisable bool
+
+	// Whether memory swappiness is supported or not
 	MemorySwappiness bool
 }
 
-type cgroupCpuInfo struct {
-	CpuCfsPeriod bool
-	CpuCfsQuota  bool
+type cgroupCPUInfo struct {
+	// Whether CPU CFS(Completely Fair Scheduler) period is supported or not
+	CPUCfsPeriod bool
+
+	// Whether CPU CFS(Completely Fair Scheduler) quota is supported or not
+	CPUCfsQuota bool
 }
diff --git a/sysinfo/sysinfo_freebsd.go b/sysinfo/sysinfo_freebsd.go
index 25896f9..22ae0d9 100644
--- a/sysinfo/sysinfo_freebsd.go
+++ b/sysinfo/sysinfo_freebsd.go
@@ -1,6 +1,6 @@
 package sysinfo
 
-// TODO FreeBSD
+// New returns an empty SysInfo for freebsd for now.
 func New(quiet bool) *SysInfo {
 	sysInfo := &SysInfo{}
 	return sysInfo
diff --git a/sysinfo/sysinfo_linux.go b/sysinfo/sysinfo_linux.go
index f864dcd..9498654 100644
--- a/sysinfo/sysinfo_linux.go
+++ b/sysinfo/sysinfo_linux.go
@@ -14,14 +14,14 @@ import (
 func New(quiet bool) *SysInfo {
 	sysInfo := &SysInfo{}
 	sysInfo.cgroupMemInfo = checkCgroupMem(quiet)
-	sysInfo.cgroupCpuInfo = checkCgroupCpu(quiet)
+	sysInfo.cgroupCPUInfo = checkCgroupCPU(quiet)
 
 	_, err := cgroups.FindCgroupMountpoint("devices")
 	sysInfo.CgroupDevicesEnabled = err == nil
 
 	sysInfo.IPv4ForwardingDisabled = !readProcBool("/proc/sys/net/ipv4/ip_forward")
 	sysInfo.BridgeNfCallIptablesDisabled = !readProcBool("/proc/sys/net/bridge/bridge-nf-call-iptables")
-	sysInfo.BridgeNfCallIp6tablesDisabled = !readProcBool("/proc/sys/net/bridge/bridge-nf-call-ip6tables")
+	sysInfo.BridgeNfCallIP6tablesDisabled = !readProcBool("/proc/sys/net/bridge/bridge-nf-call-ip6tables")
 
 	// Check if AppArmor is supported.
 	if _, err := os.Stat("/sys/kernel/security/apparmor"); !os.IsNotExist(err) {
@@ -58,8 +58,8 @@ func checkCgroupMem(quiet bool) *cgroupMemInfo {
 	return info
 }
 
-func checkCgroupCpu(quiet bool) *cgroupCpuInfo {
-	info := &cgroupCpuInfo{}
+func checkCgroupCPU(quiet bool) *cgroupCPUInfo {
+	info := &cgroupCPUInfo{}
 	mountPoint, err := cgroups.FindCgroupMountpoint("cpu")
 	if err != nil {
 		if !quiet {
@@ -68,13 +68,13 @@ func checkCgroupCpu(quiet bool) *cgroupCpuInfo {
 		return info
 	}
 
-	info.CpuCfsPeriod = cgroupEnabled(mountPoint, "cpu.cfs_period_us")
-	if !quiet && !info.CpuCfsPeriod {
+	info.CPUCfsPeriod = cgroupEnabled(mountPoint, "cpu.cfs_period_us")
+	if !quiet && !info.CPUCfsPeriod {
 		logrus.Warn("Your kernel does not support cgroup cfs period")
 	}
 
-	info.CpuCfsQuota = cgroupEnabled(mountPoint, "cpu.cfs_quota_us")
-	if !quiet && !info.CpuCfsQuota {
+	info.CPUCfsQuota = cgroupEnabled(mountPoint, "cpu.cfs_quota_us")
+	if !quiet && !info.CPUCfsQuota {
 		logrus.Warn("Your kernel does not support cgroup cfs quotas")
 	}
 	return info
diff --git a/sysinfo/sysinfo_windows.go b/sysinfo/sysinfo_windows.go
index b4d3151..8889318 100644
--- a/sysinfo/sysinfo_windows.go
+++ b/sysinfo/sysinfo_windows.go
@@ -1,6 +1,6 @@
 package sysinfo
 
-// TODO Windows
+// New returns an empty SysInfo for windows for now.
 func New(quiet bool) *SysInfo {
 	sysInfo := &SysInfo{}
 	return sysInfo