Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / cpuinfo / ac57632afc7a7c44f75544e89859426a37d6d692
commitac57632afc7a7c44f75544e89859426a37d6d692[log] [tgz]
authorMarat Dukhan <maratek@gmail.com>Mon May 08 13:08:25 2017 +0000
committerMarat Dukhan <maratek@gmail.com>Mon May 08 13:08:25 2017 +0000
tree0107ce5ca03f3eb08e1844c7ad553cf2863cb45b
parent419a819f099340819be8de015f8ca2e6eae102dd [diff]
Support Galaxy Nexus, Nexus 4/5/9
8 files changed
tree: 0107ce5ca03f3eb08e1844c7ad553cf2863cb45b
  1. include/
  2. jni/
  3. src/
  4. test/
  5. tools/
  6. .gitignore
  7. configure.py
  8. confu.yaml
  9. LICENSE
  10. README.md
README.md

CPU INFOrmation library

cpuinfo is a library to detect essential for performance optimization information about host CPU. Planned features:

  • Processor (SoC) name detection
    • [ ] Using CPUID leaves 0x80000002–0x80000004 on x86/x86-64
    • [ ] Using /proc/cpuinfo on ARM
    • [ ] Using kernel log (dmesg) on ARM
    • [ ] Using ro.chipname, ro.board.platform, ro.product.board properties (Android)
  • Vendor and microarchitecture detection
    • [x] Intel-designed x86/x86-64 cores (up to Kaby Lake, Airmont, and Knights Mill)
    • [x] AMD-designed x86/x86-64 cores (up to Puma/Jaguar and Zen)
    • [ ] VIA-designed x86/x86-64 cores
    • [ ] Other x86 cores (DM&P, RDC, Transmeta, Cyrix, Rise)
    • [x] ARM-designed ARM cores (up to Cortex-A17, Cortex-73)
    • [x] Qualcomm-designed ARM cores (up to Kryo and Kryo-280)
    • [x] nVidia-designed ARM cores (Denver)
    • [x] Samsung-designed ARM cores (Mongoose)
    • [x] Intel-designed ARM cores (XScale up to 3rd-gen)
    • [ ] Apple-designed ARM cores (up to Hurricane)
    • [ ] Server ARM cores
  • Instruction set detection
    • [x] Using CPUID on x86/x86-64 (Linux, Mach)
    • [x] Using dynamic code generation validator on x86-64 (Native Client)
    • [x] Using /proc/cpuinfo on 32-bit ARM EABI (Linux)
    • [x] Using microarchitecture heuristics on 32-bit ARM
    • [x] Using FPSID and WCID registers on 32-bit ARM
    • [ ] Using getauxval or /proc/self/auxv (Linux)
    • [ ] Using instruction probing on ARM (Linux)
  • Cache detection
    • [x] Using CPUID leaf 0x00000002 on x86/x86-64
    • [x] Using CPUID leaf 0x00000004 on non-AMD x86/x86-64
    • [ ] Using CPUID leaves 0x80000005-0x80000006 on AMD x86/x86-64
    • [x] Using CPUID leaf 0x8000001D on AMD x86/x86-64
    • [x] Using /proc/cpuinfo on ARMv6 and earlier (Linux)
    • [x] Using microarchitecture heuristics on 32-bit ARM
    • [x] Using sysctlbyname (Mach)
    • [ ] Using sysfs (Linux)
    • [ ] Using clGetDeviceInfo with CL_DEVICE_GLOBAL_MEM_CACHE_SIZE/CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE parameters (Android)
  • TLB detection
    • [x] Using CPUID leaf 0x00000002 on x86/x86-64
    • [ ] Using CPUID leaves 0x80000005-0x80000006 and 0x80000019 on AMD x86/x86-64
    • [x] Using microarchitecture heuristics on 32-bit ARM
  • Topology detection
    • [x] Using CPUID leaf 0x00000001 on x86/x86-64 (legacy APIC ID)
    • [x] Using CPUID leaf 0x0000000B on x86/x86-64 (Intel APIC ID)
    • [ ] Using CPUID leaf 0x8000001E on x86/x86-64 (AMD APIC ID)
    • [x] Using host_info (Mach)
    • [ ] Using sysfs (Linux)