Merge pull request #139 from jzwlqx/feature/optimize_netop

optimal nettop so that we avoid scan the whole /proc

bpf/netns.c

@@ -0,0 +1,4 @@
+
+SEC("tracepoint/task/newtask")
+int netns(){
+}

pkg/exporter/cmd/list_probe.go

@@ -25,7 +25,6 @@ var (
 				indent := "    "
 				for _, s := range l {
 					fmt.Printf("%s%s\n", indent, s)
-
 				}
 			}
 		},

pkg/exporter/cmd/root.go

@@ -5,8 +5,6 @@ import (
 
 	log "github.com/sirupsen/logrus"
 
-	"github.com/alibaba/kubeskoop/pkg/exporter/nettop"
-
 	"github.com/spf13/cobra"
 )
 
@@ -16,7 +14,6 @@ var (
 		Use:   "inspector",
 		Short: "network inspection tool",
 		PersistentPreRun: func(cmd *cobra.Command, args []string) {
-			nettop.Init(sidecar)
 			if debug {
 				log.SetLevel(log.DebugLevel)
 			} else {

pkg/exporter/cmd/server.go

@@ -57,7 +57,11 @@ var (
 			}
 
 			// nolint
-			go nettop.StartCache(insp.ctx)
+			if err := nettop.StartCache(insp.ctx, sidecar); err != nil {
+				log.Errorf("failed start cache: %v", err)
+				return
+			}
+
 			defer nettop.StopCache()
 
 			// config hot reload process