fix(sysman): add implementation for getActivityExt

Related-To: NEO-8554

Signed-off-by: Joshua Santosh Ranjan <joshua.santosh.ranjan@intel.com>

Author: joshuaranjan

level_zero/tools/source/sysman/engine/linux/os_engine_imp.cpp

@@ -83,6 +83,10 @@ void LinuxEngineImp::init() {
     }
 }
 
+ze_result_t LinuxEngineImp::getActivityExt(uint32_t *pCount, zes_engine_stats_t *pStats) {
+    return ZE_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
+
 LinuxEngineImp::~LinuxEngineImp() {
     for (auto &fdPair : fdList) {
         if (fdPair.first != -1) {

level_zero/tools/test/unit_tests/sources/sysman/engine/linux/test_zes_engine.cpp

@@ -199,6 +199,17 @@ TEST_F(ZesEngineFixture, GivenValidEngineHandleWhenCallingZesEngineGetActivityAn
     }
 }
 
+TEST_F(ZesEngineFixture, GivenValidEngineHandleWhenCallingZesEngineGetActivityExtThenVerifyFailureIsReturned) {
+    auto handles = getEngineHandles(handleComponentCount);
+    EXPECT_EQ(handleComponentCount, handles.size());
+
+    for (auto handle : handles) {
+        uint32_t count = 0;
+        zes_engine_stats_t stats = {};
+        EXPECT_EQ(ZE_RESULT_ERROR_UNSUPPORTED_FEATURE, zesEngineGetActivityExt(handle, &count, &stats));
+    }
+}
+
 TEST_F(ZesEngineFixture, GivenValidEngineHandleWhenCallingZesEngineGetActivityAndperfEventOpenFailsThenVerifyEngineGetActivityReturnsFailure) {
     pPmuInterface->mockPerfEventFailureReturnValue = -1;
     MockEnginePmuInterfaceImp pPmuInterfaceImp(pLinuxSysmanImp);