[PATCH 1/9] sched: Remove cpu parameter for idle_balance()

[Peter Zijlstra]

From: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

The cpu parameter passed to idle_balance is not needed as it could
be retrieved from the struct rq.

Cc: alex.shi@xxxxxxxxxx
Cc: peterz@xxxxxxxxxxxxx
Cc: mingo@xxxxxxxxxx
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
 kernel/sched/core.c  |    2 +-
 kernel/sched/fair.c  |    3 ++-
 kernel/sched/sched.h |    2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2680,7 +2680,7 @@ static void __sched __schedule(void)
 	pre_schedule(rq, prev);
 
 	if (unlikely(!rq->nr_running))
-		idle_balance(cpu, rq);
+		idle_balance(rq);
 
 	put_prev_task(rq, prev);
 	next = pick_next_task(rq);
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6359,12 +6359,13 @@ static int load_balance(int this_cpu, st
  * idle_balance is called by schedule() if this_cpu is about to become
  * idle. Attempts to pull tasks from other CPUs.
  */
-void idle_balance(int this_cpu, struct rq *this_rq)
+void idle_balance(struct rq *this_rq)
 {
 	struct sched_domain *sd;
 	int pulled_task = 0;
 	unsigned long next_balance = jiffies + HZ;
 	u64 curr_cost = 0;
+	int this_cpu = this_rq->cpu;
 
 	this_rq->idle_stamp = rq_clock(this_rq);
 
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1176,7 +1176,7 @@ extern const struct sched_class idle_sch
 extern void update_group_power(struct sched_domain *sd, int cpu);
 
 extern void trigger_load_balance(struct rq *rq);
-extern void idle_balance(int this_cpu, struct rq *this_rq);
+extern void idle_balance(struct rq *this_rq);
 
 extern void idle_enter_fair(struct rq *this_rq);
 extern void idle_exit_fair(struct rq *this_rq);


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