[anolis-intel-cloud:devel-6.6 66/66] kernel/sched/sched.h:2575:9: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '17580779487' to '400910303'

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

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-6.6
head:   b5892828e17dc790129accddd7b4c537452cd391
commit: d293a754cf1338f5f03897c4b2322ee6accfe3c0 [66/66] anolis: sched: increase the maximum number of supported sched features
config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20250912/202509121509.Eh330lqW-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250912/202509121509.Eh330lqW-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/202509121509.Eh330lqW-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/sched/core.c:87:
>> kernel/sched/sched.h:2575:9: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '17580779487' to '400910303' [-Woverflow]
    2575 |         (1UL << __SCHED_FEAT_##name) * enabled |
         |         ^
   kernel/sched/features.h:7:1: note: in expansion of macro 'SCHED_FEAT'
       7 | SCHED_FEAT(PLACE_LAG, true)
         | ^~~~~~~~~~
--
   In file included from kernel/sched/fair.c:56:
>> kernel/sched/sched.h:2575:9: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '17580779487' to '400910303' [-Woverflow]
    2575 |         (1UL << __SCHED_FEAT_##name) * enabled |
         |         ^
   kernel/sched/features.h:7:1: note: in expansion of macro 'SCHED_FEAT'
       7 | SCHED_FEAT(PLACE_LAG, true)
         | ^~~~~~~~~~
   kernel/sched/fair.c:4264:6: warning: no previous prototype for 'set_group_prefer_node' [-Wmissing-prototypes]
    4264 | void set_group_prefer_node(struct task_group *tg)
         |      ^~~~~~~~~~~~~~~~~~~~~
   kernel/sched/fair.c: In function 'set_group_prefer_node':
   kernel/sched/fair.c:4293:33: error: implicit declaration of function 'cpu_load'; did you mean 'cpu_of'? [-Wimplicit-function-declaration]
    4293 |                         load += cpu_load(cpu_rq(cpu));
         |                                 ^~~~~~~~
         |                                 cpu_of
   kernel/sched/fair.c: At top level:
   kernel/sched/fair.c:7451:22: error: conflicting types for 'cpu_load'; have 'long unsigned int(struct rq *)'
    7451 | static unsigned long cpu_load(struct rq *rq)
         |                      ^~~~~~~~
   kernel/sched/fair.c:4293:33: note: previous implicit declaration of 'cpu_load' with type 'int()'
    4293 |                         load += cpu_load(cpu_rq(cpu));
         |                                 ^~~~~~~~
   kernel/sched/fair.c:9186:6: warning: no previous prototype for 'id_can_stop_tick' [-Wmissing-prototypes]
    9186 | bool id_can_stop_tick(struct rq *rq)
         |      ^~~~~~~~~~~~~~~~
--
   In file included from kernel/sched/build_utility.c:53:
>> kernel/sched/sched.h:2575:9: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '17580779487' to '400910303' [-Woverflow]
    2575 |         (1UL << __SCHED_FEAT_##name) * enabled |
         |         ^
   kernel/sched/features.h:7:1: note: in expansion of macro 'SCHED_FEAT'
       7 | SCHED_FEAT(PLACE_LAG, true)
         | ^~~~~~~~~~
   In file included from kernel/sched/build_utility.c:105:
   kernel/sched/isolation.c:324:6: warning: no previous prototype for 'update_wilds_cpumask' [-Wmissing-prototypes]
     324 | void update_wilds_cpumask(cpumask_var_t new_allowed, cpumask_var_t old_allowed)
         |      ^~~~~~~~~~~~~~~~~~~~


vim +2575 kernel/sched/sched.h

765cc3a4b224e2 Patrick Bellasi 2017-11-08  2568  
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2569  /*
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2570   * Each translation unit has its own copy of sysctl_sched_features to allow
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2571   * constants propagation at compile time and compiler optimization based on
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2572   * features default.
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2573   */
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2574  #define SCHED_FEAT(name, enabled)	\
765cc3a4b224e2 Patrick Bellasi 2017-11-08 @2575  	(1UL << __SCHED_FEAT_##name) * enabled |
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2576  static const_debug __maybe_unused unsigned int sysctl_sched_features =
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2577  #include "features.h"
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2578  	0;
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2579  #undef SCHED_FEAT
765cc3a4b224e2 Patrick Bellasi 2017-11-08  2580  

:::::: The code at line 2575 was first introduced by commit
:::::: 765cc3a4b224e22bf524fabe40284a524f37cdd0 sched/core: Optimize sched_feat() for !CONFIG_SCHED_DEBUG builds

:::::: TO: Patrick Bellasi <patrick.bellasi@arm.com>
:::::: CC: Ingo Molnar <mingo@kernel.org>

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