[tools/perf] perf test LLVM failure on 4.9
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. 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
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
On Tue, 23 Jan 2018 18:07:25 +0530, Pintu Kumar said:
My uname says: 4.9-xxxx-amd-x86-64
Literally 4.9-xxxx? No 3rd number? And why 'xxxx'? (Hint - obfuscating doesn't help here, it's hard to debug when we don't see the *actual* string.) Some unames from my various machines: 4.15.0-rc7-next-20180112-dirty (x86_64 laptop) 4.9.35-v7+ (raspberry pi) 4.9.73 (Lede-based router) 3.10.0-229.20.1.el7.x86_64 (RHEL 7.3) 3.0.101-68-default (SLES 11.4) I'm pretty sure the fact that your uname is only returning 2 numbers before the '-' is the root cause of your problem.
On 2018/1/23 20:37, Pintu Kumar wrote:
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.
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
'perf test LLVM' requires a well formed uname string (%d.%d.%d). Please see tools/perf/fetch_kernel_version . If your distro uses another method to report kernel version number (from your uname string, sublevel can't be determined), please help us improve that function like what we have done for ubuntu (checking /proc/version_signature).
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
participants (4)
-
Arnaldo Carvalho de Melo -
Pintu Kumar -
valdis.kletnieks＠vt.edu -
Wangnan (F)