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Munmap unaligned part from mmap

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Releated-To: NEO-5397

Signed-off-by: Maciej Plewka <maciej.plewka@intel.com>
This commit is contained in:
Maciej Plewka
2021-01-26 10:06:44 +00:00
committed by Compute-Runtime-Automation
parent 6a80177dbf
commit 5cf4530748
3 changed files with 93 additions and 8 deletions
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76
opencl/test/unit_test/os_interface/linux/drm_memory_manager_allocate_in_device_pool_tests_dg1.cpp
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@ -1261,4 +1261,80 @@ TEST_F(DrmMemoryManagerLocalMemoryTest, givenGraphicsAllocationInDevicePoolIsAll
memoryManager->freeGraphicsMemory(allocation);
}
static bool munmapWasCalled = false;
TEST_F(DrmMemoryManagerLocalMemoryTest, givenAlignmentAndSizeWhenMmapReturnsUnalignedPointerThenCreateAllocWithAlignmentUnmapUnalignedPart) {
DebugManagerStateRestore restorer;
DebugManager.flags.EnableBOMmapCreate.set(-1);
drm_i915_memory_region_info regionInfo[2] = {};
regionInfo[0].region = {I915_MEMORY_CLASS_SYSTEM, 0};
regionInfo[1].region = {I915_MEMORY_CLASS_DEVICE, 0};
mock->memoryInfo.reset(new MemoryInfoImpl(regionInfo, 2));
mock->ioctlCallsCount = 0;
AllocationData allocationData;
allocationData.size = MemoryConstants::pageSize64k;
memoryManager->mmapFunction = [](void *addr, size_t len, int prot,
int flags, int fd, off_t offset) __THROW {
if (addr == 0) {
return reinterpret_cast<void *>(0x12345678);
} else {
return addr;
}
};
memoryManager->munmapFunction = [](void *addr, size_t len) __THROW {
munmapWasCalled = true;
return 0;
};
munmapWasCalled = false;
auto allocation = memoryManager->createAllocWithAlignment(allocationData, MemoryConstants::pageSize, MemoryConstants::pageSize64k, MemoryConstants::pageSize64k, 0u);
EXPECT_EQ(alignUp(reinterpret_cast<void *>(0x12345678), MemoryConstants::pageSize64k), allocation->getMmapPtr());
EXPECT_TRUE(munmapWasCalled);
munmapWasCalled = false;
memoryManager->freeGraphicsMemory(allocation);
}
TEST_F(DrmMemoryManagerLocalMemoryTest, givenAlignmentAndSizeWhenMmapReturnsAlignedThenCreateAllocWithAlignmentDoesntCallUnmap) {
DebugManagerStateRestore restorer;
DebugManager.flags.EnableBOMmapCreate.set(-1);
drm_i915_memory_region_info regionInfo[2] = {};
regionInfo[0].region = {I915_MEMORY_CLASS_SYSTEM, 0};
regionInfo[1].region = {I915_MEMORY_CLASS_DEVICE, 0};
mock->memoryInfo.reset(new MemoryInfoImpl(regionInfo, 2));
mock->ioctlCallsCount = 0;
AllocationData allocationData;
allocationData.size = MemoryConstants::pageSize64k;
memoryManager->mmapFunction = [](void *addr, size_t len, int prot,
int flags, int fd, __off_t offset) __THROW {
if (addr == 0) {
return reinterpret_cast<void *>(0x12345678);
} else {
return addr;
}
};
memoryManager->munmapFunction = [](void *addr, size_t len) __THROW {
munmapWasCalled = true;
return 0;
};
munmapWasCalled = false;
auto allocation = memoryManager->createAllocWithAlignment(allocationData, MemoryConstants::pageSize, 1u, MemoryConstants::pageSize64k, 0u);
EXPECT_EQ(reinterpret_cast<void *>(0x12345678), allocation->getMmapPtr());
EXPECT_FALSE(munmapWasCalled);
munmapWasCalled = false;
memoryManager->freeGraphicsMemory(allocation);
}
} // namespace NEO