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