From: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Date: Mon, 15 Oct 2007 15:00:12 +0000 (+0200)
Subject: sched: group scheduler SMP migration fix
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2830cf8c90f37526d401f1999250312df970bfa3;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

sched: group scheduler SMP migration fix

group scheduler SMP migration fix: use task_cfs_rq(p) to get
to the relevant fair-scheduling runqueue of a task, rq->cfs
is not the right one.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/sched.c b/kernel/sched.c
index ba9fa6c0ab65..e1657e0c86d0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1040,6 +1040,8 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
 {
 	int old_cpu = task_cpu(p);
 	struct rq *old_rq = cpu_rq(old_cpu), *new_rq = cpu_rq(new_cpu);
+	struct cfs_rq *old_cfsrq = task_cfs_rq(p),
+		      *new_cfsrq = cpu_cfs_rq(old_cfsrq, new_cpu);
 	u64 clock_offset;
 
 	clock_offset = old_rq->clock - new_rq->clock;
@@ -1052,7 +1054,8 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
 	if (p->se.block_start)
 		p->se.block_start -= clock_offset;
 #endif
-	p->se.vruntime -= old_rq->cfs.min_vruntime - new_rq->cfs.min_vruntime;
+	p->se.vruntime -= old_cfsrq->min_vruntime -
+					 new_cfsrq->min_vruntime;
 
 	__set_task_cpu(p, new_cpu);
 }