[openeuler:OLK-6.6 1613/1613] kernel/sched/fair.c:175:5: sparse: sparse: symbol 'sysctl_sched_util_low_pct' was not declared. Should it be static?

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

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   d68dc6ee371ec5466be9b2d76bdca0b360940adc
commit: 2e1dfc02d115143587ccfee1815ad295763050f2 [1613/1613] sched: Adjust wakeup cpu range according CPU util dynamicly
config: loongarch-randconfig-r111-20241210 (https://download.01.org/0day-ci/archive/20241215/202412150117.ww1cPcQk-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20241215/202412150117.ww1cPcQk-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/202412150117.ww1cPcQk-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> kernel/sched/fair.c:175:5: sparse: sparse: symbol 'sysctl_sched_util_low_pct' was not declared. Should it be static?
   kernel/sched/fair.c:1256:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_entity const *se @@     got struct sched_entity [noderef] __rcu * @@
   kernel/sched/fair.c:1256:34: sparse:     expected struct sched_entity const *se
   kernel/sched/fair.c:1256:34: sparse:     got struct sched_entity [noderef] __rcu *
   kernel/sched/fair.c:12740:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:12740:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:12740:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:6633:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/fair.c:6633:38: sparse:     expected struct task_struct *curr
   kernel/sched/fair.c:6633:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:7964:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:7964:20: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:7964:20: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:8258:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] tmp @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:8258:9: sparse:     expected struct sched_domain *[assigned] tmp
   kernel/sched/fair.c:8258:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:8367:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/fair.c:8367:38: sparse:     expected struct task_struct *curr
   kernel/sched/fair.c:8367:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:8941:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/fair.c:8941:38: sparse:     expected struct task_struct *curr
   kernel/sched/fair.c:8941:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:9934:40: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *child @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/fair.c:9934:40: sparse:     expected struct sched_domain *child
   kernel/sched/fair.c:9934:40: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/fair.c:10571:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/fair.c:10571:22: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/fair.c:10571:22: sparse:    struct task_struct *
   kernel/sched/fair.c:12012:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:12012:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:12012:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:11669:44: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *sd_parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:11669:44: sparse:     expected struct sched_domain *sd_parent
   kernel/sched/fair.c:11669:44: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:12108:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:12108:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:12108:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
   include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false
   kernel/sched/fair.c:6555:35: sparse: sparse: marked inline, but without a definition
   kernel/sched/fair.c: note: in included file:
   kernel/sched/sched.h:2145:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2145:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2145:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2309:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2309:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2309:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2145:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2145:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2145:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2145:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2145:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2145:25: sparse:    struct task_struct *

vim +/sysctl_sched_util_low_pct +175 kernel/sched/fair.c

   168	
   169	#ifdef CONFIG_QOS_SCHED_DYNAMIC_AFFINITY
   170	/*
   171	 * Low utilization threshold for CPU
   172	 *
   173	 * (default: 85%), units: percentage of CPU utilization)
   174	 */
 > 175	int sysctl_sched_util_low_pct = 85;
   176	#endif
   177	

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