3 files changed, 1 insertions, 25 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 8cfd51f62241..89c5ae836f66 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1721,7 +1721,6 @@ static void __sched_fork(unsigned long clone_flags, struct task_struct *p)
 #ifdef CONFIG_NUMA_BALANCING
         if (p->mm && atomic_read(&p->mm->mm_users) == 1) {
                 p->mm->numa_next_scan = jiffies + msecs_to_jiffies(sysctl_numa_balancing_scan_delay);
-                p->mm->numa_next_reset = jiffies + msecs_to_jiffies(sysctl_numa_balancing_scan_period_reset);
                 p->mm->numa_scan_seq = 0;
         }
 
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 66237ff8b01e..da6fa22be000 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -826,7 +826,6 @@ update_stats_curr_start(struct cfs_rq *cfs_rq, struct sched_entity *se)
  */
 unsigned int sysctl_numa_balancing_scan_period_min = 1000;
 unsigned int sysctl_numa_balancing_scan_period_max = 60000;
-unsigned int sysctl_numa_balancing_scan_period_reset = 60000;
 
 /* Portion of address space to scan in MB */
 unsigned int sysctl_numa_balancing_scan_size = 256;
@@ -1685,24 +1684,9 @@ void task_numa_work(struct callback_head *work)
         if (p->flags & PF_EXITING)
                 return;
 
-        if (!mm->numa_next_reset || !mm->numa_next_scan) {
+        if (!mm->numa_next_scan) {
                 mm->numa_next_scan = now +
                         msecs_to_jiffies(sysctl_numa_balancing_scan_delay);
-                mm->numa_next_reset = now +
-                        msecs_to_jiffies(sysctl_numa_balancing_scan_period_reset);
-        }
-
-        /*
-         * Reset the scan period if enough time has gone by. Objective is that
-         * scanning will be reduced if pages are properly placed. As tasks
-         * can enter different phases this needs to be re-examined. Lacking
-         * proper tracking of reference behaviour, this blunt hammer is used.
-         */
-        migrate = mm->numa_next_reset;
-        if (time_after(now, migrate)) {
-                p->numa_scan_period = task_scan_min(p);
-                next_scan = now + msecs_to_jiffies(sysctl_numa_balancing_scan_period_reset);
-                xchg(&mm->numa_next_reset, next_scan);
         }
 
         /*
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 42f616a74f40..e509b90a8002 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -371,13 +371,6 @@ static struct ctl_table kern_table[] = {
                 .proc_handler   = proc_dointvec,
         },
         {
-                .procname       = "numa_balancing_scan_period_reset",
-                .data           = &sysctl_numa_balancing_scan_period_reset,
-                .maxlen         = sizeof(unsigned int),
-                .mode           = 0644,
-                .proc_handler   = proc_dointvec,
-        },
-        {
                 .procname       = "numa_balancing_scan_period_max_ms",
                 .data           = &sysctl_numa_balancing_scan_period_max,
                 .maxlen         = sizeof(unsigned int),