bpflbr: Only trace kfunc when no -p

Signed-off-by: Leon Hwang <[email protected]>
Asphaltt · Dec 5, 2024 · 2233c3a · 2233c3a
1 parent 6a58c06
commit 2233c3a
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/main.go b/main.go
@@ -95,8 +95,13 @@ func main() {
 		".data.lbrs": lbrs,
 	}
 
-	tracings, err := bpflbr.NewBPFTracing(bpfSpec, reusedMaps, tracingTargets, flags.Kfuncs())
-	assert.NoVerifierErr(err, "Failed to trace bpf progs: %v")
+	kfuncs := flags.Kfuncs()
+	if len(kfuncs) != 0 && len(progs) == 0 {
+		tracingTargets = tracingTargets[:0]
+	}
+
+	tracings, err := bpflbr.NewBPFTracing(bpfSpec, reusedMaps, tracingTargets, kfuncs)
+	assert.NoVerifierErr(err, "Failed to trace: %v")
 	defer tracings.Close()
 
 	err = bpfProgs.AddProgs(tracings.Progs(), engine, true)