sched: Move cfs_bandwidth_slice sysctls to fair.c

move cfs_bandwidth_slice sysctls to fair.c and use the
new register_sysctl_init() to register the sysctl interface.

Signed-off-by: Zhen Ni <nizhen@uniontech.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

Author: nizhenth

include/linux/sched/sysctl.h

@@ -31,10 +31,6 @@ extern int sysctl_numa_balancing_mode;
 #define sysctl_numa_balancing_mode	0
 #endif
 
-#ifdef CONFIG_CFS_BANDWIDTH
-extern unsigned int sysctl_sched_cfs_bandwidth_slice;
-#endif
-
 int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer,
 		size_t *lenp, loff_t *ppos);
 

kernel/sched/fair.c

@@ -109,25 +109,6 @@ static unsigned int sched_nr_latency = 8;
  * parent will (try to) run first.
  */
 unsigned int sysctl_sched_child_runs_first __read_mostly;
-#ifdef CONFIG_SYSCTL
-static struct ctl_table sched_child_runs_first_sysctls[] = {
-	{
-		.procname       = "sched_child_runs_first",
-		.data           = &sysctl_sched_child_runs_first,
-		.maxlen         = sizeof(unsigned int),
-		.mode           = 0644,
-		.proc_handler   = proc_dointvec,
-	},
-	{}
-};
-
-static int __init sched_child_runs_first_sysctl_init(void)
-{
-	register_sysctl_init("kernel", sched_child_runs_first_sysctls);
-	return 0;
-}
-late_initcall(sched_child_runs_first_sysctl_init);
-#endif
 
 /*
  * SCHED_OTHER wake-up granularity.
@@ -192,7 +173,37 @@ int __weak arch_asym_cpu_priority(int cpu)
  *
  * (default: 5 msec, units: microseconds)
  */
-unsigned int sysctl_sched_cfs_bandwidth_slice		= 5000UL;
+static unsigned int sysctl_sched_cfs_bandwidth_slice		= 5000UL;
+#endif
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table sched_fair_sysctls[] = {
+	{
+		.procname       = "sched_child_runs_first",
+		.data           = &sysctl_sched_child_runs_first,
+		.maxlen         = sizeof(unsigned int),
+		.mode           = 0644,
+		.proc_handler   = proc_dointvec,
+	},
+#ifdef CONFIG_CFS_BANDWIDTH
+	{
+		.procname       = "sched_cfs_bandwidth_slice_us",
+		.data           = &sysctl_sched_cfs_bandwidth_slice,
+		.maxlen         = sizeof(unsigned int),
+		.mode           = 0644,
+		.proc_handler   = proc_dointvec_minmax,
+		.extra1         = SYSCTL_ONE,
+	},
+#endif
+	{}
+};
+
+static int __init sched_fair_sysctl_init(void)
+{
+	register_sysctl_init("kernel", sched_fair_sysctls);
+	return 0;
+}
+late_initcall(sched_fair_sysctl_init);
 #endif
 
 static inline void update_load_add(struct load_weight *lw, unsigned long inc)

kernel/sysctl.c

@@ -1681,16 +1681,6 @@ static struct ctl_table kern_table[] = {
 		.extra2		= SYSCTL_FOUR,
 	},
 #endif /* CONFIG_NUMA_BALANCING */
-#ifdef CONFIG_CFS_BANDWIDTH
-	{
-		.procname	= "sched_cfs_bandwidth_slice_us",
-		.data		= &sysctl_sched_cfs_bandwidth_slice,
-		.maxlen		= sizeof(unsigned int),
-		.mode		= 0644,
-		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= SYSCTL_ONE,
-	},
-#endif
 #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
 	{
 		.procname	= "sched_energy_aware",