Re: [ammarfaizi2-block:google/android/kernel/common/android12-5.10-2022-03 199/9999] arch/arm64/kvm/perf.c:58:36: error: implicit declaration of function 'perf_num_counters'

From: Ammar Faizi
Date: Sat Apr 02 2022 - 05:52:55 EST

Hi Marc,

On 4/2/22 4:38 PM, Marc Zyngier wrote:
Hi Robot,

On Sat, 02 Apr 2022 04:47:04 +0100,
kernel test robot <lkp@xxxxxxxxx> wrote:

Hi Marc,

FYI, the error/warning still remains.

tree: google/android/kernel/common/android12-5.10-2022-03

Oh look, a random Android tree based on ... 5.10.

head: 64099431c232d4a95f621411747a3972cc1c8061
commit: 13dbdc0759fd4b89417f64d399ffa6a86fdc7caf [199/9999] FROMGIT: KVM: arm64: Turn kvm_arm_support_pmu_v3() into a static key
config: arm64-randconfig-r024-20220331 (
compiler: clang version 15.0.0 ( cc2e2b80a1f36a28fa7c96c38c2674b10868f09f)
reproduce (this is a W=1 build):
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
git remote add ammarfaizi2-block
git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-5.10-2022-03
git checkout 13dbdc0759fd4b89417f64d399ffa6a86fdc7caf
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

arch/arm64/kvm/perf.c:58:36: error: implicit declaration of function 'perf_num_counters' [-Werror,-Wimplicit-function-declaration]
if (IS_ENABLED(CONFIG_ARM_PMU) && perf_num_counters() > 0)
1 error generated.

$ ls -l arch/arm64/kvm/perf.c
ls: cannot access 'arch/arm64/kvm/perf.c': No such file or directory

What is the point of testing trees that have no resemblance with

It's my tree. Didn't realize it yields many irrelevant errors like this.
I will stop pushing Android stuff to this tree.

Sorry for bothering you.

Ammar Faizi