Replace m[k]=v loop with maps.Copy

collectors/likwidMetric.go

@@ -19,6 +19,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"maps"
 	"math"
 	"os"
 	"os/signal"
@@ -767,9 +768,7 @@ func (m *LikwidCollector) calcGlobalMetrics(groups []LikwidEventsetConfig, inter
 				// Here we generate parameter list
 				params := make(map[string]float64)
 				for _, evset := range groups {
-					for mname, mres := range evset.metrics[tid] {
+					maps.Copy(params, evset.metrics[tid])
-						params[mname] = mres
-					}
 				}
 				params["gotime"] = interval.Seconds()
 				// Evaluate the metric

collectors/nvidiaMetric.go

@@ -12,6 +12,7 @@ import (
 	"errors"
 	"fmt"
 	"log"
+	"maps"
 	"slices"
 	"strings"
 	"time"
@@ -1279,9 +1280,7 @@ func (m *NvidiaCollector) Read(interval time.Duration, output chan lp.CCMessage)
 					meta:           map[string]string{},
 					excludeMetrics: excludeMetrics,
 				}
-				for k, v := range m.gpus[i].tags {
+				maps.Copy(migDevice.tags, m.gpus[i].tags)
-					migDevice.tags[k] = v
-				}
 				migDevice.tags["stype"] = "mig"
 				if m.config.UseUuidForMigDevices {
 					uuid, ret := nvml.DeviceGetUUID(mdev)
@@ -1305,9 +1304,7 @@ func (m *NvidiaCollector) Read(interval time.Duration, output chan lp.CCMessage)
 				if _, ok := migDevice.tags["stype-id"]; !ok {
 					migDevice.tags["stype-id"] = fmt.Sprintf("%d", j)
 				}
-				for k, v := range m.gpus[i].meta {
+				maps.Copy(migDevice.meta, m.gpus[i].meta)
-					migDevice.meta[k] = v
-				}
 				if _, ok := migDevice.meta["uuid"]; ok && !m.config.UseUuidForMigDevices {
 					uuid, ret := nvml.DeviceGetUUID(mdev)
 					if ret == nvml.SUCCESS {

internal/metricAggregator/metricAggregator.go

@@ -10,6 +10,7 @@ package metricAggregator
 import (
 	"context"
 	"fmt"
+	"maps"
 	"math"
 	"os"
 	"strings"
@@ -121,9 +122,7 @@ func (c *metricAggregator) Init(output chan lp.CCMessage) error {
 
 func (c *metricAggregator) Eval(starttime time.Time, endtime time.Time, metrics []lp.CCMessage) {
 	vars := make(map[string]interface{})
-	for k, v := range c.constants {
+	maps.Copy(vars, c.constants)
-		vars[k] = v
-	}
 	vars["starttime"] = starttime
 	vars["endtime"] = endtime
 	for _, f := range c.functions {