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authorZhen Ni <nizhen@uniontech.com>2022-02-15 19:45:57 +0800
committerLuis Chamberlain <mcgrof@kernel.org>2022-04-06 13:43:43 -0700
commita60707d74bd1d119cf7bcc5101cda912fc46d5e3 (patch)
tree91c01a9c81a6174295b95bde8fbfee1521513bd0 /kernel/sched
parent3123109284176b1532874591f7c81f3837bbdc17 (diff)
downloadlinux-a60707d74bd1d119cf7bcc5101cda912fc46d5e3.tar.gz
sched: Move child_runs_first sysctls to fair.c
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>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/fair.c19
-rw-r--r--kernel/sched/sched.h2
2 files changed, 21 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index d4bd299d67ab..788b1d6a3248 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -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.
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 58263f90c559..767fc1de9646 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -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);