Fix x86_64 emulator stuck issue and enable tests

extension/android/jni/jni_layer_llama.cpp

@@ -149,7 +149,7 @@ class ExecuTorchLlmJni : public facebook::jni::HybridClass<ExecuTorchLlmJni> {
       facebook::jni::alias_ref<jstring> data_path = nullptr) {
 #if defined(ET_USE_THREADPOOL)
     // Reserve 1 thread for the main thread.
-    uint32_t num_performant_cores =
+    int32_t num_performant_cores =
         ::executorch::extension::cpuinfo::get_num_performant_cores() - 1;
     if (num_performant_cores > 0) {
       ET_LOG(Info, "Resetting threadpool to %d threads", num_performant_cores);

scripts/run_android_emulator.sh

@@ -22,8 +22,7 @@ adb uninstall org.pytorch.executorch.test || true
 adb install -t android-test-debug-androidTest.apk
 
 adb logcat -c
-adb shell am instrument -w -r -e \
-  class org.pytorch.executorch.ModuleInstrumentationTest,org.pytorch.executorch.ModuleE2ETest \
+adb shell am instrument -w -r \
   org.pytorch.executorch.test/androidx.test.runner.AndroidJUnitRunner >result.txt 2>&1
 adb logcat -d > logcat.txt
 cat logcat.txt