linux-kernel - [tip:sched/core] sched: Remove 'cpu' parameter from idle

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Date:	Tue, 11 Feb 2014 04:15:38 -0800
From:	tip-bot for Daniel Lezcano <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, tglx@...utronix.de, daniel.lezcano@...aro.org
Subject: [tip:sched/core] sched: Remove 'cpu' parameter from idle_balance(
 )

Commit-ID:  b4f2ab43615e5b36c48fffa99f26aca381839ac6
Gitweb:     http://git.kernel.org/tip/b4f2ab43615e5b36c48fffa99f26aca381839ac6
Author:     Daniel Lezcano <daniel.lezcano@...aro.org>
AuthorDate: Fri, 17 Jan 2014 10:04:01 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 10 Feb 2014 16:17:01 +0100

sched: Remove 'cpu' parameter from idle_balance()

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

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: alex.shi@...aro.org
Signed-off-by: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/1389949444-14821-1-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/sched/core.c  | 2 +-
 kernel/sched/fair.c  | 3 ++-
 kernel/sched/sched.h | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 104c816..74dd565 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2705,7 +2705,7 @@ need_resched:
 	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);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 4caa803..428bc9d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6531,12 +6531,13 @@ out:
  * 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);
 
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index b44720d..82c0e02 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1158,7 +1158,7 @@ extern const struct sched_class idle_sched_class;
 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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