move deadline_period sysctls to deadline.c and use the new
register_sysctl_init() to register the sysctl interface.
Signed-off-by: Zhen Ni <nizhen@xxxxxxxxxxxxx>
---
include/linux/sched/sysctl.h | 3 ---
kernel/sched/deadline.c | 42 +++++++++++++++++++++++++++++-------
kernel/sysctl.c | 14 ------------
3 files changed, 34 insertions(+), 25 deletions(-)
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 99fbf61464ab..81187a8c625d 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -21,9 +21,6 @@ enum sched_tunable_scaling {
SCHED_TUNABLESCALING_END,
};
-extern unsigned int sysctl_sched_dl_period_max;
-extern unsigned int sysctl_sched_dl_period_min;
-
#ifdef CONFIG_UCLAMP_TASK
extern unsigned int sysctl_sched_uclamp_util_min;
extern unsigned int sysctl_sched_uclamp_util_max;
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index d2c072b0ef01..9ed9ace11151 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -20,6 +20,40 @@
struct dl_bandwidth def_dl_bandwidth;
+/*
+ * Default limits for DL period; on the top end we guard against small util
+ * tasks still getting ridiculously long effective runtimes, on the bottom end we
+ * guard against timer DoS.
+ */
+static unsigned int sysctl_sched_dl_period_max = 1 << 22; /* ~4 seconds */
+static unsigned int sysctl_sched_dl_period_min = 100; /* 100 us */
+#ifdef CONFIG_SYSCTL
+static struct ctl_table sched_dl_sysctls[] = {
+ {
+ .procname = "sched_deadline_period_max_us",
+ .data = &sysctl_sched_dl_period_max,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "sched_deadline_period_min_us",
+ .data = &sysctl_sched_dl_period_min,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {}
+};
+
+static int __init sched_dl_sysctl_init(void)
+{
+ register_sysctl_init("kernel", sched_dl_sysctls);
+ return 0;
+}
+late_initcall(sched_dl_sysctl_init);
+#endif
+
static inline struct task_struct *dl_task_of(struct sched_dl_entity *dl_se)
{
return container_of(dl_se, struct task_struct, dl);
@@ -2854,14 +2888,6 @@ void __getparam_dl(struct task_struct *p, struct sched_attr *attr)
attr->sched_flags |= dl_se->flags;
}
-/*
- * Default limits for DL period; on the top end we guard against small util
- * tasks still getting ridiculously long effective runtimes, on the bottom end we
- * guard against timer DoS.
- */
-unsigned int sysctl_sched_dl_period_max = 1 << 22; /* ~4 seconds */
-unsigned int sysctl_sched_dl_period_min = 100; /* 100 us */
-
/*
* This function validates the new parameters of a -deadline task.
* We ask for the deadline not being zero, and greater or equal
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 73cccd935d65..f4434d22246b 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1674,20 +1674,6 @@ static struct ctl_table kern_table[] = {
.extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_NUMA_BALANCING */
- {
- .procname = "sched_deadline_period_max_us",
- .data = &sysctl_sched_dl_period_max,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
- {
- .procname = "sched_deadline_period_min_us",
- .data = &sysctl_sched_dl_period_min,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
{
.procname = "sched_rr_timeslice_ms",
.data = &sysctl_sched_rr_timeslice,
--
2.20.1
