Re: [linux-next:master 7077/9540] drivers/perf/arm_cspmu/arm_cspmu.c:1105:29: error: implicit declaration of function 'get_acpi_id_for_cpu'

[Suzuki K Poulose <suzuki.poulose@arm.com>]

On 22/11/2022 10:28, Will Deacon wrote:
> On Tue, Nov 22, 2022 at 05:27:38PM +0800, kernel test robot wrote:
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>> head:   771a207d1ee9f38da8c0cee1412228f18b900bac
>> commit: e37dfd65731dc4f001fa7dfa7f705e6840017d5a [7077/9540] perf: arm_cspmu: Add support for ARM CoreSight PMU driver
>> config: loongarch-allmodconfig
>> compiler: loongarch64-linux-gcc (GCC) 12.1.0
>> reproduce (this is a W=1 build):
>>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>          chmod +x ~/bin/make.cross
>>          # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e37dfd65731dc4f001fa7dfa7f705e6840017d5a
>>          git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>>          git fetch --no-tags linux-next master
>>          git checkout e37dfd65731dc4f001fa7dfa7f705e6840017d5a
>>          # save the config file
>>          mkdir build_dir && cp config build_dir/.config
>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash drivers/iio/magnetometer/ drivers/perf/arm_cspmu/
>>
>> If you fix the issue, kindly add following tag where applicable
>> | Reported-by: kernel test robot <lkp@intel.com>
>>
>> Note: the linux-next/master HEAD 771a207d1ee9f38da8c0cee1412228f18b900bac builds fine.
>>        It may have been fixed somewhere.
>>
>> All errors (new ones prefixed by >>):
>>
>>     drivers/perf/arm_cspmu/arm_cspmu.c: In function 'arm_cspmu_get_cpus':
>>>> drivers/perf/arm_cspmu/arm_cspmu.c:1105:29: error: implicit declaration of function 'get_acpi_id_for_cpu' [-Werror=implicit-function-declaration]
>>      1105 |                             get_acpi_id_for_cpu(cpu)) {
>>           |                             ^~~~~~~~~~~~~~~~~~~
>>     cc1: some warnings being treated as errors
> 
> Besar, Suzuki, please can you look into this?

This was fixed with a Kconfig depenedency on ARM64 [0]. The above commit 
picked up doesn't have the fix. i.e., this is a duplicate error report.

[0] https://git.kernel.org/will/c/e72dbf9085b5

Thanks
Suzuki