Add support for ze_kernel_preferred_group_size_properties_t

Signed-off-by: Jaime Arteaga <jaime.a.arteaga.molina@intel.com>

Author: Jaime Arteaga

level_zero/core/source/kernel/kernel_imp.cpp

@@ -682,6 +682,24 @@ ze_result_t KernelImp::getProperties(ze_kernel_properties_t *pKernelProperties)
     uint32_t maxKernelWorkGroupSize = static_cast<uint32_t>(this->module->getDevice()->getNEODevice()->getDeviceInfo().maxWorkGroupSize);
     pKernelProperties->maxNumSubgroups = maxKernelWorkGroupSize / kernelDescriptor.kernelAttributes.simdSize;
 
+    void *pNext = pKernelProperties->pNext;
+    while (pNext) {
+        ze_base_desc_t *extendedProperties = reinterpret_cast<ze_base_desc_t *>(pKernelProperties->pNext);
+        if (extendedProperties->stype == ZE_STRUCTURE_TYPE_KERNEL_PREFERRED_GROUP_SIZE_PROPERTIES) {
+            ze_kernel_preferred_group_size_properties_t *preferredGroupSizeProperties =
+                reinterpret_cast<ze_kernel_preferred_group_size_properties_t *>(extendedProperties);
+
+            preferredGroupSizeProperties->preferredMultiple = this->kernelImmData->getKernelInfo()->getMaxSimdSize();
+
+            auto &hwHelper = NEO::HwHelper::get(this->module->getDevice()->getHwInfo().platform.eRenderCoreFamily);
+            if (hwHelper.isFusedEuDispatchEnabled(this->module->getDevice()->getHwInfo())) {
+                preferredGroupSizeProperties->preferredMultiple *= 2;
+            }
+        }
+
+        pNext = const_cast<void *>(extendedProperties->pNext);
+    }
+
     return ZE_RESULT_SUCCESS;
 }
 

level_zero/core/test/unit_tests/sources/kernel/test_kernel.cpp

@@ -837,6 +837,44 @@ HWTEST_F(KernelPropertiesTests, givenValidKernelThenPropertiesAreRetrieved) {
                         sizeof(kernelProperties.uuid.mid)));
 }
 
+HWTEST_F(KernelPropertiesTests, whenPassingPreferredGroupSizeStructToGetPropertiesThenPreferredMultipleIsReturned) {
+    ze_kernel_properties_t kernelProperties = {};
+    kernelProperties.stype = ZE_STRUCTURE_TYPE_KERNEL_PROPERTIES;
+
+    ze_kernel_preferred_group_size_properties_t preferredGroupProperties = {};
+    preferredGroupProperties.stype = ZE_STRUCTURE_TYPE_KERNEL_PREFERRED_GROUP_SIZE_PROPERTIES;
+
+    kernelProperties.pNext = &preferredGroupProperties;
+
+    ze_result_t res = kernel->getProperties(&kernelProperties);
+    EXPECT_EQ(ZE_RESULT_SUCCESS, res);
+
+    auto &hwHelper = NEO::HwHelper::get(module->getDevice()->getHwInfo().platform.eRenderCoreFamily);
+    if (hwHelper.isFusedEuDispatchEnabled(module->getDevice()->getHwInfo())) {
+        EXPECT_EQ(preferredGroupProperties.preferredMultiple, static_cast<uint32_t>(kernel->getImmutableData()->getKernelInfo()->getMaxSimdSize()) * 2);
+    } else {
+        EXPECT_EQ(preferredGroupProperties.preferredMultiple, static_cast<uint32_t>(kernel->getImmutableData()->getKernelInfo()->getMaxSimdSize()));
+    }
+}
+
+HWTEST_F(KernelPropertiesTests, whenPassingPreferredGroupSizeStructWithWrongStypeSuccessIsReturnedAndNoFieldsInPreferredGroupSizeStructAreSet) {
+    ze_kernel_properties_t kernelProperties = {};
+    kernelProperties.stype = ZE_STRUCTURE_TYPE_KERNEL_PROPERTIES;
+
+    ze_kernel_preferred_group_size_properties_t preferredGroupProperties = {};
+    preferredGroupProperties.stype = ZE_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMPORT_WIN32;
+
+    kernelProperties.pNext = &preferredGroupProperties;
+
+    uint32_t dummyPreferredMultiple = 101;
+    preferredGroupProperties.preferredMultiple = dummyPreferredMultiple;
+
+    ze_result_t res = kernel->getProperties(&kernelProperties);
+    EXPECT_EQ(ZE_RESULT_SUCCESS, res);
+
+    EXPECT_EQ(preferredGroupProperties.preferredMultiple, dummyPreferredMultiple);
+}
+
 HWTEST_F(KernelPropertiesTests, givenValidKernelThenProfilePropertiesAreRetrieved) {
     zet_profile_properties_t kernelProfileProperties = {};