Re: [PATCH 3/4] sched/rt: Split root_domain->rto_count to per-NUMA-node counters

[kernel test robot <lkp@intel.com>]

Hi Pan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on v6.16-rc5]
[also build test WARNING on linus/master]
[cannot apply to tip/sched/core peterz-queue/sched/core tip/master tip/auto-latest next-20250704]
[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/Pan-Deng/sched-rt-Optimize-cpupri_vec-layout-to-mitigate-cache-line-contention/20250707-131831
base:   v6.16-rc5
patch link:    https://lore.kernel.org/r/2c1e1dbacaddd881f3cca340ece1f9268029b620.1751852370.git.pan.deng%40intel.com
patch subject: [PATCH 3/4] sched/rt: Split root_domain->rto_count to per-NUMA-node counters
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20250707/202507071418.sFa0bilv-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 01c97b4953e87ae455bd4c41e3de3f0f0f29c61c)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250707/202507071418.sFa0bilv-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507071418.sFa0bilv-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/sched/build_policy.c:52:
   kernel/sched/rt.c:496:21: error: unknown type name 'atomic_tp'; did you mean 'atomic_t'?
     496 | int rto_counts_init(atomic_tp **rto_counts)
         |                     ^~~~~~~~~
         |                     atomic_t
   include/linux/types.h:183:3: note: 'atomic_t' declared here
     183 | } atomic_t;
         |   ^
   In file included from kernel/sched/build_policy.c:52:
>> kernel/sched/rt.c:496:5: warning: no previous prototype for function 'rto_counts_init' [-Wmissing-prototypes]
     496 | int rto_counts_init(atomic_tp **rto_counts)
         |     ^
   kernel/sched/rt.c:496:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     496 | int rto_counts_init(atomic_tp **rto_counts)
         | ^
         | static 
   kernel/sched/rt.c:501:25: error: unknown type name 'atomic_tp'; did you mean 'atomic_t'?
     501 | void rto_counts_cleanup(atomic_tp *rto_counts)
         |                         ^~~~~~~~~
         |                         atomic_t
   include/linux/types.h:183:3: note: 'atomic_t' declared here
     183 | } atomic_t;
         |   ^
   In file included from kernel/sched/build_policy.c:52:
>> kernel/sched/rt.c:501:6: warning: no previous prototype for function 'rto_counts_cleanup' [-Wmissing-prototypes]
     501 | void rto_counts_cleanup(atomic_tp *rto_counts)
         |      ^
   kernel/sched/rt.c:501:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     501 | void rto_counts_cleanup(atomic_tp *rto_counts)
         | ^
         | static 
   2 warnings and 2 errors generated.


vim +/rto_counts_init +496 kernel/sched/rt.c

   495	
 > 496	int rto_counts_init(atomic_tp **rto_counts)
   497	{
   498		return 0;
   499	}
   500	
 > 501	void rto_counts_cleanup(atomic_tp *rto_counts)
   502	{
   503	}
   504	

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