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sched: Move child_runs_first sysctls to fair.c

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move child_runs_first 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>
This commit is contained in:
Zhen Ni 2022-02-15 19:45:57 +08:00 committed by Luis Chamberlain
parent 3123109284
commit a60707d74b
4 changed files with 21 additions and 9 deletions
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2
include/linux/sched/sysctl.h
View File

@ -14,8 +14,6 @@ extern unsigned long sysctl_hung_task_timeout_secs;
enum { sysctl_hung_task_timeout_secs = 0 };
#endif
extern unsigned int sysctl_sched_child_runs_first;
enum sched_tunable_scaling {
SCHED_TUNABLESCALING_NONE,
SCHED_TUNABLESCALING_LOG,

19
kernel/sched/fair.c
View File

@ -109,6 +109,25 @@ 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.

2
kernel/sched/sched.h
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@ -108,6 +108,8 @@ extern __read_mostly int scheduler_running;
extern unsigned long calc_load_update;
extern atomic_long_t calc_load_tasks;
extern unsigned int sysctl_sched_child_runs_first;
extern void calc_global_load_tick(struct rq *this_rq);
extern long calc_load_fold_active(struct rq *this_rq, long adjust);

7
kernel/sysctl.c
View File

@ -1659,13 +1659,6 @@ int proc_do_static_key(struct ctl_table *table, int write,
}
static struct ctl_table kern_table[] = {
{
.procname = "sched_child_runs_first",
.data = &sysctl_sched_child_runs_first,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
#ifdef CONFIG_SCHEDSTATS
{
.procname = "sched_schedstats",