tracer: load only interpreter specific maps for enabled interpreters

tracer/tracer.go

@@ -522,6 +522,34 @@ func rewriteMaps(coll *cebpf.CollectionSpec, maps map[string]*cebpf.Map) error {
 	return nil
 }
 
+// isTracerEnabled checks if an interpreter tracer for the given map is enabled.
+func isTracerEnabled(mapName string, includeTracers types.IncludedTracers) bool {
+	switch mapName {
+	case "perl_procs":
+		return includeTracers.Has(types.PerlTracer)
+	case "php_procs":
+		return includeTracers.Has(types.PHPTracer)
+	case "py_procs":
+		return includeTracers.Has(types.PythonTracer)
+	case "hotspot_procs":
+		return includeTracers.Has(types.HotspotTracer)
+	case "ruby_procs":
+		return includeTracers.Has(types.RubyTracer)
+	case "v8_procs":
+		return includeTracers.Has(types.V8Tracer)
+	case "dotnet_procs":
+		return includeTracers.Has(types.DotnetTracer)
+	case "beam_procs":
+		return includeTracers.Has(types.BEAMTracer)
+	case "go_labels_procs", "apm_int_procs":
+		// go_labels_procs and apm_int_procs are called from
+		// unwind_stop and therefore need to be available all the time.
+		return true
+	default:
+		return true // Not an interpreter map, so it should be loaded
+	}
+}
+
 // loadAllMaps loads all eBPF maps that are used in our eBPF programs.
 func loadAllMaps(coll *cebpf.CollectionSpec, cfg *Config,
 	ebpfMaps map[string]*cebpf.Map,
@@ -559,6 +587,11 @@ func loadAllMaps(coll *cebpf.CollectionSpec, cfg *Config,
 			// Off CPU Profiling is disabled. So do not load this map.
 			continue
 		}
+
+		if !isTracerEnabled(mapName, cfg.IncludeTracers) {
+			log.Debugf("Skipping eBPF map %s: tracer not enabled", mapName)
+			continue
+		}
 		if newSize, ok := adaption[mapName]; ok {
 			log.Debugf("Size of eBPF map %s: %v", mapName, newSize)
 			mapSpec.MaxEntries = newSize