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Add debug flag to force nonblocking exec buffer calls when using prelim kernel 

Related-To: NEO-7144
Signed-off-by: Mateusz Jablonski <mateusz.jablonski@intel.com>
This commit is contained in:
Mateusz Jablonski 2022-11-03 07:46:57 +00:00 committed by Compute-Runtime-Automation
parent 3b4695460a
commit d45d62ef0e
4 changed files with 52 additions and 4 deletions
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1
shared/source/debug_settings/debug_variables_base.inl
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@ -223,6 +223,7 @@ DECLARE_DEBUG_VARIABLE(int32_t, ForceStatelessMocsEncryptionBit, -1, "-1: defaul
DECLARE_DEBUG_VARIABLE(int32_t, CopyHostPtrOnCpu, -1, "-1: default, 0: disable, 1:enable, In clCreateBuffer with CL_MEM_COPY_HOST_PTR, copy memory using locked ptr on cpu")
DECLARE_DEBUG_VARIABLE(int32_t, ForceZeDeviceCanAccessPerReturnValue, -1, "-1: default, 0: zeDeviceCanAccessPeer always return false 1: zeDeviceCanAccessPeer always return true")
DECLARE_DEBUG_VARIABLE(int32_t, AdjustThreadGroupDispatchSize, -1, "-1: default, 0: do not adjust thread group dispatch size 1: adjust thread group dispatch size (PVC)")
DECLARE_DEBUG_VARIABLE(int32_t, ForceNonblockingExecbufferCalls, -1, "-1: default, 0: make execbuffer call blocking, 1: make execbuffer call nonblocking. Supported only in prelim i915 kernels.")
/*LOGGING FLAGS*/
DECLARE_DEBUG_VARIABLE(int32_t, PrintDriverDiagnostics, -1, "prints driver diagnostics messages to standard output, value corresponds to hint level")

7
shared/source/os_interface/linux/ioctl_helper_prelim.cpp
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@ -31,8 +31,11 @@ namespace NEO {
IoctlHelperPrelim20::IoctlHelperPrelim20(Drm &drmArg) : IoctlHelper(drmArg) {
auto hwHelper = HwInfoConfig::get(this->drm.getRootDeviceEnvironment().getHardwareInfo()->platform.eProductFamily);
if (hwHelper && hwHelper->isNonBlockingGpuSubmissionSupported()) {
handleExecBufferInNonBlockMode = true;
handleExecBufferInNonBlockMode = hwHelper && hwHelper->isNonBlockingGpuSubmissionSupported();
if (DebugManager.flags.ForceNonblockingExecbufferCalls.get() != -1) {
handleExecBufferInNonBlockMode = DebugManager.flags.ForceNonblockingExecbufferCalls.get();
}
if (handleExecBufferInNonBlockMode) {
auto fileDescriptor = this->drm.getFileDescriptor();
SysCalls::fcntl(fileDescriptor, F_SETFL, SysCalls::fcntl(fileDescriptor, F_GETFL) | O_NONBLOCK);
}

1
shared/test/common/test_files/igdrcl.config
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@ -478,3 +478,4 @@ SetAmountOfReusableAllocations = -1
ExperimentalSmallBufferPoolAllocator = -1
ForceZeDeviceCanAccessPerReturnValue = -1
AdjustThreadGroupDispatchSize = -1
ForceNonblockingExecbufferCalls = -1

43
shared/test/unit_test/os_interface/linux/ioctl_helper_tests_prelim.cpp
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@ -465,3 +465,46 @@ HWTEST2_F(IoctlPrelimHelperTests, givenNonXeHpcWhenCreatingIoctlHelperThenProper
EXPECT_EQ(0, SysCalls::getFileDescriptorFlagsCalled);
EXPECT_EQ(0, SysCalls::setFileDescriptorFlagsCalled);
}
TEST_F(IoctlPrelimHelperTests, givenDisabledForceNonblockingExecbufferCallsFlagWhenCreatingIoctlHelperThenExecBufferIsHandledBlocking) {
DebugManagerStateRestore restorer;
DebugManager.flags.ForceNonblockingExecbufferCalls.set(0);
MockExecutionEnvironment executionEnvironment{};
std::unique_ptr<Drm> drm{Drm::create(std::make_unique<HwDeviceIdDrm>(0, ""), *executionEnvironment.rootDeviceEnvironments[0])};
VariableBackup<decltype(SysCalls::getFileDescriptorFlagsCalled)> backupGetFlags(&SysCalls::getFileDescriptorFlagsCalled, 0);
VariableBackup<decltype(SysCalls::setFileDescriptorFlagsCalled)> backupSetFlags(&SysCalls::setFileDescriptorFlagsCalled, 0);
VariableBackup<decltype(SysCalls::passedFileDescriptorFlagsToSet)> backupPassedFlags(&SysCalls::passedFileDescriptorFlagsToSet, 0);
IoctlHelperPrelim20 ioctlHelper{*drm};
EXPECT_EQ(0, SysCalls::getFileDescriptorFlagsCalled);
EXPECT_EQ(0, SysCalls::setFileDescriptorFlagsCalled);
EXPECT_TRUE(ioctlHelper.checkIfIoctlReinvokeRequired(EAGAIN, DrmIoctl::GemExecbuffer2));
EXPECT_TRUE(ioctlHelper.checkIfIoctlReinvokeRequired(EAGAIN, DrmIoctl::GemVmBind));
EXPECT_TRUE(ioctlHelper.checkIfIoctlReinvokeRequired(EBUSY, DrmIoctl::GemExecbuffer2));
}
TEST_F(IoctlPrelimHelperTests, givenEnabledForceNonblockingExecbufferCallsFlagWhenCreatingIoctlHelperThenExecBufferIsHandledNonBlocking) {
DebugManagerStateRestore restorer;
DebugManager.flags.ForceNonblockingExecbufferCalls.set(1);
MockExecutionEnvironment executionEnvironment{};
std::unique_ptr<Drm> drm{Drm::create(std::make_unique<HwDeviceIdDrm>(0, ""), *executionEnvironment.rootDeviceEnvironments[0])};
VariableBackup<decltype(SysCalls::getFileDescriptorFlagsCalled)> backupGetFlags(&SysCalls::getFileDescriptorFlagsCalled, 0);
VariableBackup<decltype(SysCalls::setFileDescriptorFlagsCalled)> backupSetFlags(&SysCalls::setFileDescriptorFlagsCalled, 0);
VariableBackup<decltype(SysCalls::passedFileDescriptorFlagsToSet)> backupPassedFlags(&SysCalls::passedFileDescriptorFlagsToSet, 0);
IoctlHelperPrelim20 ioctlHelper{*drm};
EXPECT_EQ(1, SysCalls::getFileDescriptorFlagsCalled);
EXPECT_EQ(1, SysCalls::setFileDescriptorFlagsCalled);
EXPECT_EQ((O_RDWR | O_NONBLOCK), SysCalls::passedFileDescriptorFlagsToSet);
EXPECT_FALSE(ioctlHelper.checkIfIoctlReinvokeRequired(EAGAIN, DrmIoctl::GemExecbuffer2));
EXPECT_TRUE(ioctlHelper.checkIfIoctlReinvokeRequired(EAGAIN, DrmIoctl::GemVmBind));
EXPECT_TRUE(ioctlHelper.checkIfIoctlReinvokeRequired(EBUSY, DrmIoctl::GemExecbuffer2));
}