linux-kernel - Re: [RFC PATCH v2 11/17] sched: Basic tracking of matching tasks

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Date:   Tue, 23 Apr 2019 17:17:48 -0700
From:   Tim Chen <tim.c.chen@...ux.intel.com>
To:     Vineeth Remanan Pillai <vpillai@...italocean.com>,
        Nishanth Aravamudan <naravamudan@...italocean.com>,
        Julien Desfossez <jdesfossez@...italocean.com>,
        Peter Zijlstra <peterz@...radead.org>, mingo@...nel.org,
        tglx@...utronix.de, pjt@...gle.com, torvalds@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, subhra.mazumdar@...cle.com,
        fweisbec@...il.com, keescook@...omium.org, kerrnel@...gle.com,
        Phil Auld <pauld@...hat.com>, Aaron Lu <aaron.lwe@...il.com>,
        Aubrey Li <aubrey.intel@...il.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [RFC PATCH v2 11/17] sched: Basic tracking of matching tasks


> +
> +void sched_core_enqueue(struct rq *rq, struct task_struct *p)
> +{

...

> +}
> +
> +void sched_core_dequeue(struct rq *rq, struct task_struct *p)
> +{

...

> +}
> +
> +/*
> + * Find left-most (aka, highest priority) task matching @cookie.
> + */
> +struct task_struct *sched_core_find(struct rq *rq, unsigned long cookie)
> +{

...


The sched_core_* functions are used only in the core.c
they are declared in.  We can convert them to static functions.

Thanks.

Tim

---
 kernel/sched/core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 14e766d0df99..455e7ecc2f48 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -155,7 +155,7 @@ static inline bool __sched_core_less(struct task_struct *a, struct task_struct *
 	return false;
 }
 
-void sched_core_enqueue(struct rq *rq, struct task_struct *p)
+static void sched_core_enqueue(struct rq *rq, struct task_struct *p)
 {
 	struct rb_node *parent, **node;
 	struct task_struct *node_task;
@@ -182,7 +182,7 @@ void sched_core_enqueue(struct rq *rq, struct task_struct *p)
 	rb_insert_color(&p->core_node, &rq->core_tree);
 }
 
-void sched_core_dequeue(struct rq *rq, struct task_struct *p)
+static void sched_core_dequeue(struct rq *rq, struct task_struct *p)
 {
 	rq->core->core_task_seq++;
 
@@ -195,7 +195,7 @@ void sched_core_dequeue(struct rq *rq, struct task_struct *p)
 /*
  * Find left-most (aka, highest priority) task matching @cookie.
  */
-struct task_struct *sched_core_find(struct rq *rq, unsigned long cookie)
+static struct task_struct *sched_core_find(struct rq *rq, unsigned long cookie)
 {
 	struct rb_node *node = rq->core_tree.rb_node;
 	struct task_struct *node_task, *match;
@@ -221,7 +221,7 @@ struct task_struct *sched_core_find(struct rq *rq, unsigned long cookie)
 	return match;
 }
 
-struct task_struct *sched_core_next(struct task_struct *p, unsigned long cookie)
+static struct task_struct *sched_core_next(struct task_struct *p, unsigned long cookie)
 {
 	struct rb_node *node = &p->core_node;
 
@@ -282,7 +282,7 @@ static void __sched_core_disable(void)
 	printk("core sched disabled\n");
 }
 
-void sched_core_get(void)
+static void sched_core_get(void)
 {
 	mutex_lock(&sched_core_mutex);
 	if (!sched_core_count++)
@@ -290,7 +290,7 @@ void sched_core_get(void)
 	mutex_unlock(&sched_core_mutex);
 }
 
-void sched_core_put(void)
+static void sched_core_put(void)
 {
 	mutex_lock(&sched_core_mutex);
 	if (!--sched_core_count)
-- 
2.20.1