summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorZhen Ni <nizhen@uniontech.com>2022-02-15 14:45:59 +0300
committerLuis Chamberlain <mcgrof@kernel.org>2022-04-06 23:43:43 +0300
commitd9ab0e63fa7f8405fbb19e28c5191e0880a7f2db (patch)
tree538e809b3aae350ca8575488f20dd174cba6386f
parentf5ef06d58be8311a9425e6a54a053ecb350952f3 (diff)
downloadlinux-d9ab0e63fa7f8405fbb19e28c5191e0880a7f2db.tar.xz
sched: Move rt_period/runtime sysctls to rt.c
move rt_period/runtime sysctls to rt.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>
-rw-r--r--include/linux/sched/sysctl.h11
-rw-r--r--kernel/rcu/rcu.h2
-rw-r--r--kernel/sched/core.c13
-rw-r--r--kernel/sched/rt.c43
-rw-r--r--kernel/sched/sched.h4
-rw-r--r--kernel/sysctl.c14
6 files changed, 48 insertions, 39 deletions
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 6c7a6850559b..4391c1307945 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -31,15 +31,6 @@ extern int sysctl_numa_balancing_mode;
#define sysctl_numa_balancing_mode 0
#endif
-/*
- * control realtime throttling:
- *
- * /proc/sys/kernel/sched_rt_period_us
- * /proc/sys/kernel/sched_rt_runtime_us
- */
-extern unsigned int sysctl_sched_rt_period;
-extern int sysctl_sched_rt_runtime;
-
extern unsigned int sysctl_sched_dl_period_max;
extern unsigned int sysctl_sched_dl_period_min;
@@ -58,8 +49,6 @@ extern int sched_rr_timeslice;
int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
-int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
- size_t *lenp, loff_t *ppos);
int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer,
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index 24b5f2c2de87..7812c740b3bf 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -23,6 +23,8 @@
#define RCU_SEQ_CTR_SHIFT 2
#define RCU_SEQ_STATE_MASK ((1 << RCU_SEQ_CTR_SHIFT) - 1)
+extern int sysctl_sched_rt_runtime;
+
/*
* Return the counter portion of a sequence number previously returned
* by rcu_seq_snap() or rcu_seq_current().
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 04440da5955f..774f3229db37 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -145,12 +145,6 @@ const_debug unsigned int sysctl_sched_nr_migrate = 8;
const_debug unsigned int sysctl_sched_nr_migrate = 32;
#endif
-/*
- * period over which we measure -rt task CPU usage in us.
- * default: 1s
- */
-unsigned int sysctl_sched_rt_period = 1000000;
-
__read_mostly int scheduler_running;
#ifdef CONFIG_SCHED_CORE
@@ -445,13 +439,6 @@ sched_core_dequeue(struct rq *rq, struct task_struct *p, int flags) { }
#endif /* CONFIG_SCHED_CORE */
/*
- * part of the period that we allow rt tasks to run in us.
- * default: 0.95s
- */
-int sysctl_sched_rt_runtime = 950000;
-
-
-/*
* Serialization rules:
*
* Lock order:
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index a32c46889af8..5663bb5ff890 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -13,6 +13,47 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun);
struct rt_bandwidth def_rt_bandwidth;
+/*
+ * period over which we measure -rt task CPU usage in us.
+ * default: 1s
+ */
+unsigned int sysctl_sched_rt_period = 1000000;
+
+/*
+ * part of the period that we allow rt tasks to run in us.
+ * default: 0.95s
+ */
+int sysctl_sched_rt_runtime = 950000;
+
+static int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
+ size_t *lenp, loff_t *ppos);
+#ifdef CONFIG_SYSCTL
+static struct ctl_table sched_rt_sysctls[] = {
+ {
+ .procname = "sched_rt_period_us",
+ .data = &sysctl_sched_rt_period,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = sched_rt_handler,
+ },
+ {
+ .procname = "sched_rt_runtime_us",
+ .data = &sysctl_sched_rt_runtime,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = sched_rt_handler,
+ },
+ {}
+};
+
+static int __init sched_rt_sysctl_init(void)
+{
+ register_sysctl_init("kernel", sched_rt_sysctls);
+ return 0;
+}
+late_initcall(sched_rt_sysctl_init);
+#endif
+
static enum hrtimer_restart sched_rt_period_timer(struct hrtimer *timer)
{
struct rt_bandwidth *rt_b =
@@ -2925,7 +2966,7 @@ static void sched_rt_do_global(void)
raw_spin_unlock_irqrestore(&def_rt_bandwidth.rt_runtime_lock, flags);
}
-int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
+static int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int old_period, old_runtime;
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 767fc1de9646..3b406c78a8e9 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -114,6 +114,10 @@ extern void calc_global_load_tick(struct rq *this_rq);
extern long calc_load_fold_active(struct rq *this_rq, long adjust);
extern void call_trace_sched_update_nr_running(struct rq *rq, int count);
+
+extern unsigned int sysctl_sched_rt_period;
+extern int sysctl_sched_rt_runtime;
+
/*
* Helpers for converting nanosecond timing to jiffy resolution
*/
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index fc0eeca20718..029bfe06c68d 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1682,20 +1682,6 @@ static struct ctl_table kern_table[] = {
},
#endif /* CONFIG_NUMA_BALANCING */
{
- .procname = "sched_rt_period_us",
- .data = &sysctl_sched_rt_period,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = sched_rt_handler,
- },
- {
- .procname = "sched_rt_runtime_us",
- .data = &sysctl_sched_rt_runtime,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = sched_rt_handler,
- },
- {
.procname = "sched_deadline_period_max_us",
.data = &sysctl_sched_dl_period_max,
.maxlen = sizeof(unsigned int),