linux-kernel - Re: [PATCH v3 1/4] arch_topology: Support basic SMT control for the driver

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Date:   Tue, 14 Nov 2023 21:42:52 +0800
From:   kernel test robot <lkp@...el.com>
To:     Yicong Yang <yangyicong@...wei.com>, catalin.marinas@....com,
        will@...nel.org, sudeep.holla@....com,
        linux-arm-kernel@...ts.infradead.org
Cc:     oe-kbuild-all@...ts.linux.dev, dietmar.eggemann@....com,
        gregkh@...uxfoundation.org, rafael@...nel.org,
        jonathan.cameron@...wei.com, prime.zeng@...ilicon.com,
        linuxarm@...wei.com, yangyicong@...ilicon.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] arch_topology: Support basic SMT control for the
 driver

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-20231114]
[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: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20231114/202311142157.B3tyngmI-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231114/202311142157.B3tyngmI-lkp@intel.com/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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311142157.B3tyngmI-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/base/arch_topology.c:32:12: warning: 'topology_smt_num_threads' defined but not used [-Wunused-variable]
      32 | static int topology_smt_num_threads = 1;
         |            ^~~~~~~~~~~~~~~~~~~~~~~~


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