linux-kernel - Re: [PATCH v3] sched/topology: remove sysctl_sched_energy

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Date:   Thu, 14 Sep 2023 08:01:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Shrikanth Hegde <sshegde@...ux.vnet.ibm.com>, mingo@...hat.com,
        vincent.guittot@...aro.org
Cc:     oe-kbuild-all@...ts.linux.dev, sshegde@...ux.vnet.ibm.com,
        dietmar.eggemann@....com, vschneid@...hat.com,
        linux-kernel@...r.kernel.org, ionela.voinescu@....com,
        quentin.perret@....com, srikar@...ux.vnet.ibm.com,
        mgorman@...hsingularity.net, mingo@...nel.org,
        pierre.gondois@....com, yu.c.chen@...el.com,
        tim.c.chen@...ux.intel.com
Subject: Re: [PATCH v3] sched/topology: remove sysctl_sched_energy_aware
 depending on the architecture

Hi Shrikanth,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/sched/core]
[also build test WARNING on linus/master v6.6-rc1 next-20230913]
[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/Shrikanth-Hegde/sched-topology-remove-sysctl_sched_energy_aware-depending-on-the-architecture/20230913-195055
base:   tip/sched/core
patch link:    https://lore.kernel.org/r/20230913114807.665094-1-sshegde%40linux.vnet.ibm.com
patch subject: [PATCH v3] sched/topology: remove sysctl_sched_energy_aware depending on the architecture
config: x86_64-buildonly-randconfig-003-20230914 (https://download.01.org/0day-ci/archive/20230914/202309140704.YiAtZ0yy-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230914/202309140704.YiAtZ0yy-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/202309140704.YiAtZ0yy-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/sched/build_utility.c:89:
>> kernel/sched/topology.c:212:33: warning: 'sysctl_eas_header' defined but not used [-Wunused-variable]
     212 | static struct ctl_table_header *sysctl_eas_header;
         |                                 ^~~~~~~~~~~~~~~~~


vim +/sysctl_eas_header +212 kernel/sched/topology.c

   208	
   209	#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
   210	DEFINE_STATIC_KEY_FALSE(sched_energy_present);
   211	static unsigned int sysctl_sched_energy_aware;
 > 212	static struct ctl_table_header *sysctl_eas_header;
   213	static DEFINE_MUTEX(sched_energy_mutex);
   214	static bool sched_energy_update;
   215	static bool is_sysctl_eas_changing;
   216	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki