Messages in this thread | | | Subject | Re: [tip:sched/core 45/47] kernel/sched/topology.c:23:20: error: unused function 'sched_debug' | From | Yicong Yang <> | Date | Wed, 13 Oct 2021 17:02:42 +0800 |
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Hi,
On 2021/10/13 2:30, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core > head: b2d5b9cec60fecc72a13191c2c6c05acf60975a5 > commit: f43df9225fcad9b07a4ef4d0fe4c3ad2fb4ce82d [45/47] sched/topology: Remove unused numa_distance in cpu_attach_domain() > config: hexagon-buildonly-randconfig-r004-20211012 (attached as .config) > compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c3dcf39554dbea780d6cb7e12239451ba47a2668) > 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/tip/tip.git/commit/?id=f43df9225fcad9b07a4ef4d0fe4c3ad2fb4ce82d > git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git > git fetch --no-tags tip sched/core > git checkout f43df9225fcad9b07a4ef4d0fe4c3ad2fb4ce82d > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All errors (new ones prefixed by >>): > >>> kernel/sched/topology.c:23:20: error: unused function 'sched_debug' [-Werror,-Wunused-function] > static inline bool sched_debug(void) > ^ > 1 error generated. >
sched_debug() is unused if CONFIG_ENERGY_MODEL=n || CONFIG_CPU_FREQ_GOV_SCHEDUTIL=n and CONFIG_NUMA=n, which is the case in the report. This is not introduced by this patch.
A __maybe_unused qualify for sched_debug() may fix this. Not sure we intends to do so.
> > vim +/sched_debug +23 kernel/sched/topology.c > > f2cb13609d5397 Ingo Molnar 2017-02-01 22 > f2cb13609d5397 Ingo Molnar 2017-02-01 @23 static inline bool sched_debug(void) > f2cb13609d5397 Ingo Molnar 2017-02-01 24 { > 9406415f46f612 Peter Zijlstra 2021-04-15 25 return sched_debug_verbose; > f2cb13609d5397 Ingo Molnar 2017-02-01 26 } > f2cb13609d5397 Ingo Molnar 2017-02-01 27 > > :::::: The code at line 23 was first introduced by commit > :::::: f2cb13609d5397cdd747f3ed6fb651233851717d sched/topology: Split out scheduler topology code from core.c into topology.c > > :::::: TO: Ingo Molnar <mingo@kernel.org> > :::::: CC: Ingo Molnar <mingo@kernel.org> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org >
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