Add benchmark enable switch

Author: HermiaHuan

tests/platforms/cuda.yaml

@@ -77,5 +77,7 @@ a100:
       include: "*"
       # Exclude patterns: empty list or list paths to exclude
       exclude: []
+    
     benchmark:
-      smoke: ["throughput", "latency", "serve"]
+      enabled: true
+      smoke: ["throughput", "latency", "serve"]

tests/run.py

@@ -338,6 +338,8 @@ def _discover_e2e_tests(self) -> list[TestCase]:
     def _discover_benchmark_tests(self) -> list[TestCase]:
         """Benchmark smoke tests selected by platform YAML."""
         benchmark = self.config.get_benchmark_tests()
+        if not benchmark.get("enabled", False):
+            return []
         selected_smoke = benchmark.get("smoke", [])
 
         if not selected_smoke: