[openeuler:OLK-6.6 1812/3958] kernel/sched/fair.c:175:5: sparse: sparse: symbol 'sysctl_sched_util_low_pct' was not declared. Should it be static? - Kernel

13 Mar 2024


      tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   f066d3699b4816fda2b6f452885b51bd22199c43
commit: 2e1dfc02d115143587ccfee1815ad295763050f2 [1812/3958] sched: Adjust wakeup cpu range according CPU util dynamicly
config: x86_64-randconfig-123-20240313 (https://download.01.org/0day-ci/archive/20240313/202403132127.OaVz6UjY-lkp@i...)
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/20240313/202403132127.OaVz6UjY-lkp@i...)
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/202403132127.OaVz6UjY-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
   kernel/sched/fair.c:143:14: sparse: sparse: symbol 'sysctl_overload_detect_period' was not declared. Should it be static?
   kernel/sched/fair.c:144:14: sparse: sparse: symbol 'sysctl_offline_wait_interval' was not declared. Should it be static?
...
...
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: kernel/sched/fair.c:1256:34: sparse: kernel/sched/fair.c:1256:34: sparse: kernel/sched/fair.c:3039:13: kernel/sched/fair.c:3039:13: sparse: kernel/sched/fair.c:3039:13: sparse: kernel/sched/fair.c:12740:9: kernel/sched/fair.c:12740:9: sparse: kernel/sched/fair.c:12740:9: sparse: kernel/sched/fair.c:5891:22: kernel/sched/fair.c:5891:22: sparse: kernel/sched/fair.c:5891:22: sparse: kernel/sched/fair.c:6633:38: kernel/sched/fair.c:6633:38: sparse: kernel/sched/fair.c:6633:38: sparse: kernel/sched/fair.c:7964:20: kernel/sched/fair.c:7964:20: sparse: kernel/sched/fair.c:7964:20: sparse: kernel/sched/fair.c:8258:9: kernel/sched/fair.c:8258:9: sparse: kernel/sched/fair.c:8258:9: sparse: kernel/sched/fair.c:8367:38: kernel/sched/fair.c:8367:38: sparse: kernel/sched/fair.c:8367:38: sparse: kernel/sched/fair.c:8587:22: kernel/sched/fair.c:8587:22: sparse: kernel/sched/fair.c:8587:22: sparse: kernel/sched/fair.c:8941:38: kernel/sched/fair.c:8941:38: sparse: kernel/sched/fair.c:8941:38: sparse: kernel/sched/fair.c:9934:40: kernel/sched/fair.c:9934:40: sparse: kernel/sched/fair.c:9934:40: sparse: kernel/sched/fair.c:10571:22: kernel/sched/fair.c:10571:22: sparse: kernel/sched/fair.c:10571:22: sparse: kernel/sched/fair.c:12012:9: kernel/sched/fair.c:12012:9: sparse: kernel/sched/fair.c:12012:9: sparse: kernel/sched/fair.c:11669:44: kernel/sched/fair.c:11669:44: sparse: kernel/sched/fair.c:11669:44: sparse: kernel/sched/fair.c:12108:9: kernel/sched/fair.c:12108:9: sparse: kernel/sched/fair.c:12108:9: sparse: kernel/sched/fair.c:2985:9: kernel/sched/fair.c: note: kernel/sched/sched.h:2145:25: kernel/sched/sched.h:2145:25: sparse: kernel/sched/sched.h:2145:25: sparse: kernel/sched/sched.h:2309:9: kernel/sched/sched.h:2309:9: sparse: kernel/sched/sched.h:2309:9: sparse: kernel/sched/sched.h:2145:25: kernel/sched/sched.h:2145:25: sparse: kernel/sched/sched.h:2145:25: sparse: kernel/sched/sched.h:2145:25: kernel/sched/sched.h:2145:25: sparse: kernel/sched/sched.h:2145:25: sparse:

sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_entity const *se @@     got struct sched_entity [noderef] __rcu * @@ expected struct sched_entity const *se got struct sched_entity [noderef] __rcu * sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct task_struct *tsk @@     got struct task_struct [noderef] __rcu * @@ expected struct task_struct *tsk got struct task_struct [noderef] __rcu * sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@ expected struct sched_domain *[assigned] sd got struct sched_domain [noderef] __rcu *parent sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct * sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@ expected struct task_struct *curr got struct task_struct [noderef] __rcu *curr sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@ expected struct sched_domain *[assigned] sd got struct sched_domain [noderef] __rcu *parent sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] tmp @@     got struct sched_domain [noderef] __rcu *parent @@ expected struct sched_domain *[assigned] tmp got struct sched_domain [noderef] __rcu *parent sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@ expected struct task_struct *curr got struct task_struct [noderef] __rcu *curr sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct * sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@ expected struct task_struct *curr got struct task_struct [noderef] __rcu *curr sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *child @@     got struct sched_domain [noderef] __rcu *child @@ expected struct sched_domain *child got struct sched_domain [noderef] __rcu *child sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct * sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@ expected struct sched_domain *[assigned] sd got struct sched_domain [noderef] __rcu *parent sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *sd_parent @@     got struct sched_domain [noderef] __rcu *parent @@ expected struct sched_domain *sd_parent got struct sched_domain [noderef] __rcu *parent sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@ expected struct sched_domain *[assigned] sd got struct sched_domain [noderef] __rcu *parent sparse: sparse: context imbalance in 'task_numa_placement' - different lock contexts for basic block in included file: sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct * sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct * sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct * sparse: sparse: incompatible types in comparison expression (different address spaces): struct task_struct [noderef] __rcu * struct task_struct *
vim +/sysctl_sched_util_low_pct +175 kernel/sched/fair.c
64	
    65	/*
    66	 * The initial- and re-scaling of tunables is configurable
    67	 *
    68	 * Options are:
    69	 *
    70	 *   SCHED_TUNABLESCALING_NONE - unscaled, always *1
    71	 *   SCHED_TUNABLESCALING_LOG - scaled logarithmical, *1+ilog(ncpus)
    72	 *   SCHED_TUNABLESCALING_LINEAR - scaled linear, *ncpus
    73	 *
    74	 * (default SCHED_TUNABLESCALING_LOG = *(1+ilog(ncpus))
    75	 */
...
76	unsigned int sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_LOG;
77	
    78	/*
    79	 * Minimal preemption granularity for CPU-bound tasks:
    80	 *
    81	 * (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
    82	 */
    83	unsigned int sysctl_sched_base_slice			= 750000ULL;
    84	static unsigned int normalized_sysctl_sched_base_slice	= 750000ULL;
    85	
    86	/*
    87	 * After fork, child runs first. If set to 0 (default) then
    88	 * parent will (try to) run first.
    89	 */
    90	unsigned int sysctl_sched_child_runs_first __read_mostly;
    91	
    92	const_debug unsigned int sysctl_sched_migration_cost	= 500000UL;
    93	
    94	int sched_thermal_decay_shift;
    95	static int __init setup_sched_thermal_decay_shift(char *str)
    96	{
    97		int _shift = 0;
    98	
    99		if (kstrtoint(str, 0, &_shift))
   100			pr_warn("Unable to set scheduler thermal pressure decay shift parameter\n");
   101	
   102		sched_thermal_decay_shift = clamp(_shift, 0, 10);
   103		return 1;
   104	}
   105	__setup("sched_thermal_decay_shift=", setup_sched_thermal_decay_shift);
   106	
   107	#ifdef CONFIG_SMP
   108	/*
   109	 * For asym packing, by default the lower numbered CPU has higher priority.
   110	 */
   111	int __weak arch_asym_cpu_priority(int cpu)
   112	{
   113		return -cpu;
   114	}
   115	
   116	/*
   117	 * The margin used when comparing utilization with CPU capacity.
   118	 *
   119	 * (default: ~20%)
   120	 */
   121	#define fits_capacity(cap, max)	((cap) * 1280 < (max) * 1024)
   122	
   123	/*
   124	 * The margin used when comparing CPU capacities.
   125	 * is 'cap1' noticeably greater than 'cap2'
   126	 *
   127	 * (default: ~5%)
   128	 */
   129	#define capacity_greater(cap1, cap2) ((cap1) * 1024 > (cap2) * 1078)
   130	#endif
   131	
   132	#ifdef CONFIG_QOS_SCHED
   133	
   134	/*
   135	 * To distinguish cfs bw, use QOS_THROTTLED mark cfs_rq->throttled
   136	 * when qos throttled(and cfs bw throttle mark cfs_rq->throttled as 1).
   137	 */
   138	#define QOS_THROTTLED	2
   139	
   140	static DEFINE_PER_CPU_SHARED_ALIGNED(struct list_head, qos_throttled_cfs_rq);
   141	static DEFINE_PER_CPU_SHARED_ALIGNED(struct hrtimer, qos_overload_timer);
   142	static DEFINE_PER_CPU(int, qos_cpu_overload);
   143	unsigned int sysctl_overload_detect_period = 5000;  /* in ms */
   144	unsigned int sysctl_offline_wait_interval = 100;  /* in ms */
   145	static int one_thousand = 1000;
   146	static int hundred_thousand = 100000;
   147	static int unthrottle_qos_cfs_rqs(int cpu);
   148	#endif
   149	
   150	#ifdef CONFIG_CFS_BANDWIDTH
   151	/*
   152	 * Amount of runtime to allocate from global (tg) to local (per-cfs_rq) pool
   153	 * each time a cfs_rq requests quota.
   154	 *
   155	 * Note: in the case that the slice exceeds the runtime remaining (either due
   156	 * to consumption or the quota being specified to be smaller than the slice)
   157	 * we will always only issue the remaining available time.
   158	 *
   159	 * (default: 5 msec, units: microseconds)
   160	 */
   161	static unsigned int sysctl_sched_cfs_bandwidth_slice		= 5000UL;
   162	#endif
   163	
   164	#ifdef CONFIG_NUMA_BALANCING
   165	/* Restrict the NUMA promotion throughput (MB/s) for each target node. */
   166	static unsigned int sysctl_numa_balancing_promote_rate_limit = 65536;
   167	#endif
   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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