Em Tue, Jan 23, 2018 at 06:07:25PM +0530, Pintu Kumar escreveu:
> Hi All,
>
> I am verifying all perf tests on Ubuntu-16 x86-64 platform using the
> kernel version 4.9.20.
> I have installed several others packages including: clang, llvm
>
> But, when I run 'perf test' I get some FAILURE.
> Specially, 'perf test LLVM' is failing.
Wang, could you please take a look? I'll be traveling this week, so
probably will not have time for trying to work on this.
- Arnaldo
> Please check the below error logs:
>
> ----------------------------------------------------
> # perf test LLVM
> 35: Test LLVM searching and compiling :
> 35.1: Basic BPF llvm compiling test : FAILED!
> 35.2: Test kbuild searching : Skip
> 35.3: Compile source for BPF prologue generation test : Skip
> 35.4: Compile source for BPF relocation test : Skip
> ----------------------------------------------------
>
> When I run with -v I get this:
>
> -----------------------------------------------------
> # perf test -v LLVM
> 35: Test LLVM searching and compiling :
> 35.1: Basic BPF llvm compiling test :
> --- start ---
> test child forked, pid 3304
> Unablt to get kernel version from uname '4.9-xxxx-amd-x86-64'
> WARNING: unable to get correct kernel building directory.
> Hint: Set correct kbuild directory using 'kbuild-dir' option in [llvm]
> section of ~/.perfconfig or set it to "" to suppress kbuild
> detection.
>
> Unablt to get kernel version from uname '4.9-xxxx-amd-x86-64'
>
>
> int _version SEC("version") = LINUX_VERSION_CODE;
> ' | $CLANG_EXEC -D__KERNEL__ -D__NR_CPUS__=$NR_CPUS
> -DLINUX_VERSION_CODE=$LINUX_VERSION_CODE $CLANG_OPTIONS
> $KERNEL_INC_OPTIONS -Wno-unused-value -Wno-pointer-sign
> -working-directory $WORKING_DIR -c "$CLANG_SOURCE" -target bpf -O2 -o
> -
> libbpf: 2129190-4a0 doesn't provide kernel version
> Failed to parse test case 'Basic BPF llvm compiling test'
> test child finished with -1
> ---- end ----
> Test LLVM searching and compiling subtest 0: FAILED!
> -----------------------------------------------------
>
>
> Basic BPF LLVM compiling test is failing.
> It reports that bpf could not able to read the kernel version from uname.
> Is it because of this that 'perf test LLVM' is failing ?
>
> My uname says:
> 4.9-xxxx-amd-x86-64
>
> My kernel version is: 4.9.20 (from Makefile)
>
> So, I dont think there is any problem with kernel version.
>
> If any body have come across this problem please let me know how to
> resolve this issue.
>
>
>
> Thank You!
>
> Regards,
> Pintu
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