1 files changed, 105 insertions, 0 deletions
diff --git a/debian/patches-rt/0014-sched-rt-Use-the-full-cpumask-for-balancing.patch b/debian/patches-rt/0014-sched-rt-Use-the-full-cpumask-for-balancing.patch
new file mode 100644
index 000000000..c2817a0b7
--- /dev/null
+++ b/debian/patches-rt/0014-sched-rt-Use-the-full-cpumask-for-balancing.patch
@@ -0,0 +1,105 @@
+From 75c028b5537f7205cfe5aecf8cf6bb61ef1428f6 Mon Sep 17 00:00:00 2001
+From: Peter Zijlstra <peterz@infradead.org>
+Date: Fri, 23 Oct 2020 12:12:11 +0200
+Subject: [PATCH 014/323] sched,rt: Use the full cpumask for balancing
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+We want migrate_disable() tasks to get PULLs in order for them to PUSH
+away the higher priority task.
+
+Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ kernel/sched/cpudeadline.c | 4 ++--
+ kernel/sched/cpupri.c      | 4 ++--
+ kernel/sched/deadline.c    | 4 ++--
+ kernel/sched/rt.c          | 4 ++--
+ 4 files changed, 8 insertions(+), 8 deletions(-)
+
+diff --git a/kernel/sched/cpudeadline.c b/kernel/sched/cpudeadline.c
+index 8cb06c8c7eb1..ceb03d76c0cc 100644
+--- a/kernel/sched/cpudeadline.c
++++ b/kernel/sched/cpudeadline.c
+@@ -120,7 +120,7 @@ int cpudl_find(struct cpudl *cp, struct task_struct *p,
+ 	const struct sched_dl_entity *dl_se = &p->dl;
+ 
+ 	if (later_mask &&
+-	    cpumask_and(later_mask, cp->free_cpus, p->cpus_ptr)) {
++	    cpumask_and(later_mask, cp->free_cpus, &p->cpus_mask)) {
+ 		unsigned long cap, max_cap = 0;
+ 		int cpu, max_cpu = -1;
+ 
+@@ -151,7 +151,7 @@ int cpudl_find(struct cpudl *cp, struct task_struct *p,
+ 
+ 		WARN_ON(best_cpu != -1 && !cpu_present(best_cpu));
+ 
+-		if (cpumask_test_cpu(best_cpu, p->cpus_ptr) &&
++		if (cpumask_test_cpu(best_cpu, &p->cpus_mask) &&
+ 		    dl_time_before(dl_se->deadline, cp->elements[0].dl)) {
+ 			if (later_mask)
+ 				cpumask_set_cpu(best_cpu, later_mask);
+diff --git a/kernel/sched/cpupri.c b/kernel/sched/cpupri.c
+index 0033731a0797..11c4df2010de 100644
+--- a/kernel/sched/cpupri.c
++++ b/kernel/sched/cpupri.c
+@@ -73,11 +73,11 @@ static inline int __cpupri_find(struct cpupri *cp, struct task_struct *p,
+ 	if (skip)
+ 		return 0;
+ 
+-	if (cpumask_any_and(p->cpus_ptr, vec->mask) >= nr_cpu_ids)
++	if (cpumask_any_and(&p->cpus_mask, vec->mask) >= nr_cpu_ids)
+ 		return 0;
+ 
+ 	if (lowest_mask) {
+-		cpumask_and(lowest_mask, p->cpus_ptr, vec->mask);
++		cpumask_and(lowest_mask, &p->cpus_mask, vec->mask);
+ 
+ 		/*
+ 		 * We have to ensure that we have at least one bit
+diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
+index e64d378e4e87..94977a6ced8b 100644
+--- a/kernel/sched/deadline.c
++++ b/kernel/sched/deadline.c
+@@ -1922,7 +1922,7 @@ static void task_fork_dl(struct task_struct *p)
+ static int pick_dl_task(struct rq *rq, struct task_struct *p, int cpu)
+ {
+ 	if (!task_running(rq, p) &&
+-	    cpumask_test_cpu(cpu, p->cpus_ptr))
++	    cpumask_test_cpu(cpu, &p->cpus_mask))
+ 		return 1;
+ 	return 0;
+ }
+@@ -2072,7 +2072,7 @@ static struct rq *find_lock_later_rq(struct task_struct *task, struct rq *rq)
+ 		/* Retry if something changed. */
+ 		if (double_lock_balance(rq, later_rq)) {
+ 			if (unlikely(task_rq(task) != rq ||
+-				     !cpumask_test_cpu(later_rq->cpu, task->cpus_ptr) ||
++				     !cpumask_test_cpu(later_rq->cpu, &task->cpus_mask) ||
+ 				     task_running(rq, task) ||
+ 				     !dl_task(task) ||
+ 				     !task_on_rq_queued(task))) {
+diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
+index 695526a54a89..f91339c0dee8 100644
+--- a/kernel/sched/rt.c
++++ b/kernel/sched/rt.c
+@@ -1672,7 +1672,7 @@ static void put_prev_task_rt(struct rq *rq, struct task_struct *p)
+ static int pick_rt_task(struct rq *rq, struct task_struct *p, int cpu)
+ {
+ 	if (!task_running(rq, p) &&
+-	    cpumask_test_cpu(cpu, p->cpus_ptr))
++	    cpumask_test_cpu(cpu, &p->cpus_mask))
+ 		return 1;
+ 
+ 	return 0;
+@@ -1825,7 +1825,7 @@ static struct rq *find_lock_lowest_rq(struct task_struct *task, struct rq *rq)
+ 			 * Also make sure that it wasn't scheduled on its rq.
+ 			 */
+ 			if (unlikely(task_rq(task) != rq ||
+-				     !cpumask_test_cpu(lowest_rq->cpu, task->cpus_ptr) ||
++				     !cpumask_test_cpu(lowest_rq->cpu, &task->cpus_mask) ||
+ 				     task_running(rq, task) ||
+ 				     !rt_task(task) ||
+ 				     !task_on_rq_queued(task))) {
+-- 
+2.43.0
+