fix cpu usage

cpu.go

@@ -43,24 +43,9 @@ func getCPU() ([]DeviceInfo, error) {
 }
 
 func getCPUUsage() ([]DeviceInfo, error) {
-	cpu, err := ghw.CPU()
-	if err != nil {
-		return nil, errors.Wrap(err, "error getting CPU info")
-	}
 
-	res := make([]DeviceInfo, 0, len(cpu.Processors))
-
-	// for i, proc := range cpu.Processors {
-	// 	fmt.Printf(" %v\n", proc)
 
-	// 	e := DeviceInfo{
-	// 		Type:  fmt.Sprintf("proc-%d", i),
-	// 		Model: proc.Model,
-	// 		Param: "proc.NumThreads",
-	// 		Power: uint64(proc.NumThreads),
-	// 	}
-	// 	res = append(res, e)
-	// }
+	res := make([]DeviceInfo, 0, len(cpu.Processors))
 
 	var rusage syscall.Rusage
 
@@ -78,7 +63,7 @@ func getCPUUsage() ([]DeviceInfo, error) {
 	e := DeviceInfo{
 		Type: "cpu",
 		//Model: proc.Model,
-		Param: "proc.NumThreads",
+		Param: "syscall.Getrusage",
 		Power: uint64(float64(total) / float64(time.Second) * 100),
 	}
 	res = append(res, e)