From f3a16ba6a1152b8966dcadc668af4cf00623c7b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?=
 <emulatorman@parabola.nu>
Date: Wed, 16 Dec 2015 14:55:49 -0300
Subject: Linux-libre 4.3.3-gnu

---
 kernel/.gitignore     |  1 -
 kernel/bpf/arraymap.c |  2 +-
 kernel/sched/bfs.c    | 38 ++++++++++++++++----------------------
 kernel/sysctl.c       | 10 ++++++++++
 4 files changed, 27 insertions(+), 24 deletions(-)

(limited to 'kernel')

diff --git a/kernel/.gitignore b/kernel/.gitignore
index 790d83c7d..b3097bde4 100644
--- a/kernel/.gitignore
+++ b/kernel/.gitignore
@@ -5,4 +5,3 @@ config_data.h
 config_data.gz
 timeconst.h
 hz.bc
-x509_certificate_list
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 29ace107f..7a0decf47 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -104,7 +104,7 @@ static int array_map_update_elem(struct bpf_map *map, void *key, void *value,
 		/* all elements already exist */
 		return -EEXIST;
 
-	memcpy(array->value + array->elem_size * index, value, array->elem_size);
+	memcpy(array->value + array->elem_size * index, value, map->value_size);
 	return 0;
 }
 
diff --git a/kernel/sched/bfs.c b/kernel/sched/bfs.c
index e414fed91..a4e9de738 100644
--- a/kernel/sched/bfs.c
+++ b/kernel/sched/bfs.c
@@ -135,7 +135,7 @@
 
 void print_scheduler_version(void)
 {
-	printk(KERN_INFO "BFS CPU scheduler v0.465 by Con Kolivas.\n");
+	printk(KERN_INFO "BFS CPU scheduler v0.467 by Con Kolivas.\n");
 }
 
 /*
@@ -149,6 +149,11 @@ int rr_interval __read_mostly = 3;
 int rr_interval __read_mostly = 6;
 #endif
 
+/* Tunable to choose whether to prioritise latency or throughput, simple
+ * binary yes or no */
+
+int sched_interactive __read_mostly = 1;
+
 /*
  * sched_iso_cpu - sysctl which determines the cpu percentage SCHED_ISO tasks
  * are allowed to run five seconds as real time tasks. This is the total over
@@ -869,9 +874,9 @@ static inline bool scaling_rq(struct rq *rq)
 	return rq->scaling;
 }
 
-static inline int locality_diff(struct task_struct *p, struct rq *rq)
+static inline int locality_diff(int cpu, struct rq *rq)
 {
-	return rq->cpu_locality[task_cpu(p)];
+	return rq->cpu_locality[cpu];
 }
 #else /* CONFIG_SMP */
 static inline void set_cpuidle_map(int cpu)
@@ -2688,20 +2693,6 @@ void account_idle_time(cputime_t cputime)
 {
 }
 
-#ifdef CONFIG_NO_HZ_COMMON
-void update_cpu_load_nohz(void)
-{
-}
-
-void calc_load_enter_idle(void)
-{
-}
-
-void calc_load_exit_idle(void)
-{
-}
-#endif /* CONFIG_NO_HZ_COMMON */
-
 /*
  * Account guest cpu time to a process.
  * @p: the process that the cpu time gets accounted to
@@ -3227,12 +3218,15 @@ task_struct *earliest_deadline_task(struct rq *rq, int cpu, struct task_struct *
 			 * against its deadline when not, based on cpu cache
 			 * locality.
 			 */
-			if (task_sticky(p) && task_rq(p) != rq) {
-				if (scaling_rq(rq))
-					continue;
-				dl = p->deadline << locality_diff(p, rq);
-			} else
+			if (sched_interactive)
 				dl = p->deadline;
+			else {
+				int tcpu = task_cpu(p);
+
+				if (tcpu != cpu && task_sticky(p) && scaling_rq(rq))
+					continue;
+				dl = p->deadline << locality_diff(tcpu, rq);
+			}
 
 			if (deadline_before(dl, earliest_deadline)) {
 				earliest_deadline = dl;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 973e3b4f2..079357ab2 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -127,6 +127,7 @@ static unsigned long one_ul = 1;
 static int __maybe_unused one_hundred = 100;
 #ifdef CONFIG_SCHED_BFS
 extern int rr_interval;
+extern int sched_interactive;
 extern int sched_iso_cpu;
 static int __read_mostly one_thousand = 1000;
 #endif
@@ -987,6 +988,15 @@ static struct ctl_table kern_table[] = {
 		.extra1		= &one,
 		.extra2		= &one_thousand,
 	},
+	{
+		.procname	= "interactive",
+		.data		= &sched_interactive,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_minmax,
+		.extra1		= &zero,
+		.extra2		= &one,
+	},
 	{
 		.procname	= "iso_cpu",
 		.data		= &sched_iso_cpu,
-- 
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