新增Linux GPU监控功能

参考了nezha-agent。实现了Linux服务器下NVIDIA显卡的监控。
通过 --gpu 参数启用显卡监控功能。
支持多显卡，显卡使用率，显存使用率监控
实现了AMD显卡的监控，但是未经过测试

monitoring/unit/gpu_detailed_linux.go

@@ -0,0 +1,213 @@
+//go:build linux
+
+package monitoring
+
+import (
+	"errors"
+)
+
+const (
+	vendorAMD = iota + 1
+	vendorNVIDIA
+)
+
+var vendorType = getDetailedVendor()
+
+// DetailedGPUInfo 详细GPU信息结构体
+type DetailedGPUInfo struct {
+	Name         string  `json:"name"`          // GPU型号
+	MemoryTotal  uint64  `json:"memory_total"`  // 总显存 (字节)
+	MemoryUsed   uint64  `json:"memory_used"`   // 已用显存 (字节)
+	Utilization  float64 `json:"utilization"`   // GPU使用率 (0-100)
+	Temperature  uint64  `json:"temperature"`   // 温度 (摄氏度)
+}
+
+func getDetailedVendor() uint8 {
+	_, err := getNvidiaDetailedStat()
+	if err != nil {
+		return vendorAMD
+	} else {
+		return vendorNVIDIA
+	}
+}
+
+func getNvidiaDetailedStat() ([]float64, error) {
+	smi := &NvidiaSMI{
+		BinPath: "/usr/bin/nvidia-smi",
+	}
+	err1 := smi.Start()
+	if err1 != nil {
+		return nil, err1
+	}
+	data, err2 := smi.GatherUsage()
+	if err2 != nil {
+		return nil, err2
+	}
+	return data, nil
+}
+
+func getAMDDetailedStat() ([]float64, error) {
+	rsmi := &ROCmSMI{
+		BinPath: "/opt/rocm/bin/rocm-smi",
+	}
+	err := rsmi.Start()
+	if err != nil {
+		return nil, err
+	}
+	data, err := rsmi.GatherUsage()
+	if err != nil {
+		return nil, err
+	}
+	return data, nil
+}
+
+func getNvidiaDetailedHost() ([]string, error) {
+	smi := &NvidiaSMI{
+		BinPath: "/usr/bin/nvidia-smi",
+	}
+	err := smi.Start()
+	if err != nil {
+		return nil, err
+	}
+	data, err := smi.GatherModel()
+	if err != nil {
+		return nil, err
+	}
+	return data, nil
+}
+
+func getAMDDetailedHost() ([]string, error) {
+	rsmi := &ROCmSMI{
+		BinPath: "/opt/rocm/bin/rocm-smi",
+	}
+	err := rsmi.Start()
+	if err != nil {
+		return nil, err
+	}
+	data, err := rsmi.GatherModel()
+	if err != nil {
+		return nil, err
+	}
+	return data, nil
+}
+
+// GetDetailedGPUHost 获取GPU型号信息
+func GetDetailedGPUHost() ([]string, error) {
+	var gi []string
+	var err error
+
+	switch vendorType {
+	case vendorAMD:
+		gi, err = getAMDDetailedHost()
+	case vendorNVIDIA:
+		gi, err = getNvidiaDetailedHost()
+	default:
+		return nil, errors.New("invalid vendor")
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return gi, nil
+}
+
+// GetDetailedGPUState 获取GPU使用率
+func GetDetailedGPUState() ([]float64, error) {
+	var gs []float64
+	var err error
+
+	switch vendorType {
+	case vendorAMD:
+		gs, err = getAMDDetailedStat()
+	case vendorNVIDIA:
+		gs, err = getNvidiaDetailedStat()
+	default:
+		return nil, errors.New("invalid vendor")
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return gs, nil
+}
+
+// GetDetailedGPUInfo 获取详细GPU信息
+func GetDetailedGPUInfo() ([]DetailedGPUInfo, error) {
+	var gpuInfos []DetailedGPUInfo
+	var err error
+
+	switch vendorType {
+	case vendorAMD:
+		gpuInfos, err = getAMDDetailedInfo()
+	case vendorNVIDIA:
+		gpuInfos, err = getNvidiaDetailedInfo()
+	default:
+		return nil, errors.New("invalid vendor")
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return gpuInfos, nil
+}
+
+func getNvidiaDetailedInfo() ([]DetailedGPUInfo, error) {
+	smi := &NvidiaSMI{
+		BinPath: "/usr/bin/nvidia-smi",
+	}
+	err := smi.Start()
+	if err != nil {
+		return nil, err
+	}
+	
+	data, err := smi.GatherDetailedInfo()
+	if err != nil {
+		return nil, err
+	}
+	
+	var gpuInfos []DetailedGPUInfo
+	for _, nvidiaInfo := range data {
+		gpuInfo := DetailedGPUInfo{
+			Name:         nvidiaInfo.Name,
+			MemoryTotal:  nvidiaInfo.MemoryTotal,
+			MemoryUsed:   nvidiaInfo.MemoryUsed,
+			Utilization:  nvidiaInfo.Utilization,
+			Temperature:  nvidiaInfo.Temperature,
+		}
+		gpuInfos = append(gpuInfos, gpuInfo)
+	}
+	
+	return gpuInfos, nil
+}
+
+func getAMDDetailedInfo() ([]DetailedGPUInfo, error) {
+	rsmi := &ROCmSMI{
+		BinPath: "/opt/rocm/bin/rocm-smi",
+	}
+	err := rsmi.Start()
+	if err != nil {
+		return nil, err
+	}
+	
+	data, err := rsmi.GatherDetailedInfo()
+	if err != nil {
+		return nil, err
+	}
+	
+	var gpuInfos []DetailedGPUInfo
+	for _, amdInfo := range data {
+		gpuInfo := DetailedGPUInfo{
+			Name:         amdInfo.Name,
+			MemoryTotal:  amdInfo.MemoryTotal,
+			MemoryUsed:   amdInfo.MemoryUsed,
+			Utilization:  amdInfo.Utilization,
+			Temperature:  amdInfo.Temperature,
+		}
+		gpuInfos = append(gpuInfos, gpuInfo)
+	}
+	
+	return gpuInfos, nil
+}