Hi Yicong,
kernel test robot noticed the following build warnings:
[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus arm/for-next kvmarm/next soc/for-next linus/master arm/fixes v6.7-rc1 next-20231115]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yicong-Yang/arch_topology-Support-basic-SMT-control-for-the-driver/20231114-120544
base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link: https://lore.kernel.org/r/20231114040110.54590-2-yangyicong%40huawei.com
patch subject: [PATCH v3 1/4] arch_topology: Support basic SMT control for the driver
config: arm-socfpga_defconfig (https://download.01.org/0day-ci/archive/20231115/[email protected]/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231115/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All warnings (new ones prefixed by >>):
>> drivers/base/arch_topology.c:32:12: warning: unused variable 'topology_smt_num_threads' [-Wunused-variable]
32 | static int topology_smt_num_threads = 1;
| ^
1 warning generated.
vim +/topology_smt_num_threads +32 drivers/base/arch_topology.c
30
31 /* Maximum threads number per-Core */
> 32 static int topology_smt_num_threads = 1;
33
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
On 2023/11/15 23:23, kernel test robot wrote:
> Hi Yicong,
>
> kernel test robot noticed the following build warnings:
>
> [auto build test WARNING on arm64/for-next/core]
> [also build test WARNING on driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus arm/for-next kvmarm/next soc/for-next linus/master arm/fixes v6.7-rc1 next-20231115]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Yicong-Yang/arch_topology-Support-basic-SMT-control-for-the-driver/20231114-120544
> base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
> patch link: https://lore.kernel.org/r/20231114040110.54590-2-yangyicong%40huawei.com
> patch subject: [PATCH v3 1/4] arch_topology: Support basic SMT control for the driver
> config: arm-socfpga_defconfig (https://download.01.org/0day-ci/archive/20231115/[email protected]/config)
> compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231115/[email protected]/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <[email protected]>
> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
>
> All warnings (new ones prefixed by >>):
>
>>> drivers/base/arch_topology.c:32:12: warning: unused variable 'topology_smt_num_threads' [-Wunused-variable]
> 32 | static int topology_smt_num_threads = 1;
> | ^
> 1 warning generated.
>
This variable needs to be protected by CONFIG_HOTPLUG_SMT, otherwise it'll be unused
if architecture like arm/parisc selects CONFIG_GENERIC_ARCH_TOPOLOGY but not
CONFIG_HOTPLUG_SMT.
>
> vim +/topology_smt_num_threads +32 drivers/base/arch_topology.c
>
> 30
> 31 /* Maximum threads number per-Core */
> > 32 static int topology_smt_num_threads = 1;
> 33
>