Add CpuInfo::isCpuFlagPresent() method

Related-To: NEO-5276

Signed-off-by: Igor Venevtsev <igor.venevtsev@intel.com>

opencl/test/unit_test/test_files/linux/proc/cpuinfo

@@ -0,0 +1,108 @@
+processor	: 0
+vendor_id	: GenuineIntel
+cpu family	: 6
+model		: 94
+model name	: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
+stepping	: 3
+microcode	: 0xdc
+cpu MHz		: 900.565
+cache size	: 6144 KB
+physical id	: 0
+siblings	: 4
+core id		: 0
+cpu cores	: 4
+apicid		: 0
+initial apicid	: 0
+fpu		: yes
+fpu_exception	: yes
+cpuid level	: 22
+wp		: yes
+flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit srbds
+bogomips	: 6399.96
+clflush size	: 64
+cache_alignment	: 64
+address sizes	: 39 bits physical, 48 bits virtual
+power management:
+
+processor	: 1
+vendor_id	: GenuineIntel
+cpu family	: 6
+model		: 94
+model name	: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
+stepping	: 3
+microcode	: 0xdc
+cpu MHz		: 900.224
+cache size	: 6144 KB
+physical id	: 0
+siblings	: 4
+core id		: 1
+cpu cores	: 4
+apicid		: 2
+initial apicid	: 2
+fpu		: yes
+fpu_exception	: yes
+cpuid level	: 22
+wp		: yes
+flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit srbds
+bogomips	: 6399.96
+clflush size	: 64
+cache_alignment	: 64
+address sizes	: 39 bits physical, 48 bits virtual
+power management:
+
+processor	: 2
+vendor_id	: GenuineIntel
+cpu family	: 6
+model		: 94
+model name	: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
+stepping	: 3
+microcode	: 0xdc
+cpu MHz		: 900.065
+cache size	: 6144 KB
+physical id	: 0
+siblings	: 4
+core id		: 2
+cpu cores	: 4
+apicid		: 4
+initial apicid	: 4
+fpu		: yes
+fpu_exception	: yes
+cpuid level	: 22
+wp		: yes
+flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit srbds
+bogomips	: 6399.96
+clflush size	: 64
+cache_alignment	: 64
+address sizes	: 39 bits physical, 48 bits virtual
+power management:
+
+processor	: 3
+vendor_id	: GenuineIntel
+cpu family	: 6
+model		: 94
+model name	: Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
+stepping	: 3
+microcode	: 0xdc
+cpu MHz		: 900.670
+cache size	: 6144 KB
+physical id	: 0
+siblings	: 4
+core id		: 3
+cpu cores	: 4
+apicid		: 6
+initial apicid	: 6
+fpu		: yes
+fpu_exception	: yes
+cpuid level	: 22
+wp		: yes
+flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit srbds
+bogomips	: 6399.96
+clflush size	: 64
+cache_alignment	: 64
+address sizes	: 39 bits physical, 48 bits virtual
+power management:
+

shared/source/utilities/cpu_info.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2020 Intel Corporation
+ * Copyright (C) 2017-2021 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -217,6 +217,8 @@ struct CpuInfo {
         return instance;
     }
 
+    bool isCpuFlagPresent(const char *cpuFlag);
+
     static void (*cpuidexFunc)(int *, int, int);
     static void (*cpuidFunc)(int[4], int);
 

shared/source/utilities/linux/cpu_info.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2020 Intel Corporation
+ * Copyright (C) 2017-2021 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -7,7 +7,12 @@
 
 #include "shared/source/utilities/cpu_info.h"
 
+#include "shared/source/os_interface/linux/os_inc.h"
+
 #include <cpuid.h>
+#include <fstream>
+#include <sstream>
+#include <string>
 
 namespace NEO {
 
@@ -37,4 +42,22 @@ void CpuInfo::cpuidex(
     cpuidexFunc(reinterpret_cast<int *>(cpuInfo), functionId, subfunctionId);
 }
 
+bool CpuInfo::isCpuFlagPresent(const char *cpuFlag) {
+    std::ifstream ifs(std::string(Os::sysFsProcPathPrefix) + "/cpuinfo");
+    std::string line;
+    while (std::getline(ifs, line)) {
+        if (line.substr(0, 5) == "flags") {
+            std::stringstream ss(line);
+            std::string flag;
+            while (ss >> flag) {
+                if (flag == cpuFlag) {
+                    return true;
+                }
+            }
+        }
+    }
+
+    return false;
+}
+
 } // namespace NEO

shared/source/utilities/windows/cpu_info.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2020 Intel Corporation
+ * Copyright (C) 2017-2021 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -37,4 +37,8 @@ void CpuInfo::cpuidex(
     cpuidexFunc(reinterpret_cast<int *>(cpuInfo), functionId, subfunctionId);
 }
 
+bool CpuInfo::isCpuFlagPresent(const char *cpuFlag) {
+    return false;
+}
+
 } // namespace NEO

shared/test/unit_test/utilities/CMakeLists.txt

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019-2020 Intel Corporation
+# Copyright (C) 2019-2021 Intel Corporation
 #
 # SPDX-License-Identifier: MIT
 #
@@ -23,3 +23,5 @@ target_sources(${TARGET_NAME} PRIVATE
                ${CMAKE_CURRENT_SOURCE_DIR}/timer_util_tests.cpp
                ${CMAKE_CURRENT_SOURCE_DIR}/vec_tests.cpp
 )
+
+add_subdirectories()

shared/test/unit_test/utilities/linux/CMakeLists.txt

@@ -0,0 +1,16 @@
+#
+# Copyright (C) 2021 Intel Corporation
+#
+# SPDX-License-Identifier: MIT
+#
+
+set(UTILITIES_CPUINFO_TESTS_LINUX
+    ${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt
+    ${CMAKE_CURRENT_SOURCE_DIR}/cpuinfo_tests_linux.cpp
+)
+
+if(UNIX)
+  target_sources(${TARGET_NAME} PRIVATE
+                 ${UTILITIES_CPUINFO_TESTS_LINUX}
+  )
+endif()

shared/test/unit_test/utilities/linux/cpuinfo_tests_linux.cpp

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2021 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "shared/source/helpers/file_io.h"
+#include "shared/source/utilities/cpu_info.h"
+
+#include "gtest/gtest.h"
+
+using namespace NEO;
+
+TEST(CpuInfo, givenProcCpuinfoFileExistsWhenIsCpuFlagPresentIsCalledThenValidValueIsReturned) {
+    std::string cpuinfoFile = "test_files/linux/proc/cpuinfo";
+    EXPECT_TRUE(fileExists(cpuinfoFile));
+
+    CpuInfo testCpuInfo;
+    EXPECT_TRUE(testCpuInfo.isCpuFlagPresent("fpu"));
+    EXPECT_TRUE(testCpuInfo.isCpuFlagPresent("vme"));
+    EXPECT_FALSE(testCpuInfo.isCpuFlagPresent("nonExistingCpuFlag"));
+}

shared/test/unit_test/utilities/windows/CMakeLists.txt

@@ -0,0 +1,16 @@
+#
+# Copyright (C) 2019-2021 Intel Corporation
+#
+# SPDX-License-Identifier: MIT
+#
+
+set(UTILITIES_CPUINFO_TESTS_WINDOWS
+    ${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt
+    ${CMAKE_CURRENT_SOURCE_DIR}/cpuinfo_tests_windows.cpp
+)
+
+if(WIN32)
+  target_sources(${TARGET_NAME} PRIVATE
+                 ${UTILITIES_CPUINFO_TESTS_WINDOWS}
+  )
+endif()

shared/test/unit_test/utilities/windows/cpuinfo_tests_windows.cpp

@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2021 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "shared/source/utilities/cpu_info.h"
+
+#include "gtest/gtest.h"
+
+using namespace NEO;
+
+TEST(CpuInfo, givenIsCpuFlagPresentCalledThenFalseIsReturned) {
+    CpuInfo testCpuInfo;
+
+    EXPECT_FALSE(testCpuInfo.isCpuFlagPresent("fpu"));
+    EXPECT_FALSE(testCpuInfo.isCpuFlagPresent("vme"));
+    EXPECT_FALSE(testCpuInfo.isCpuFlagPresent("nonExistingCpuFlag"));
+}