linux-kernel - [PATCH] sched: remove noop function task_fork

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Date:   Wed, 27 Nov 2019 09:03:28 -0800
From:   Tom Rix <trix@...hat.com>
To:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        dietmar.eggemann@....com, bsegall@...gle.com, mgorman@...e.de,
        linux-kernel@...r.kernel.org
Subject: [PATCH] sched: remove noop function task_fork_dl


task_fork_dl is an empty function used only for dl's
sched_class.task_fork.  Removing it cleans up the code a bit
and saves a function call in sched_fork.

Signed-off-by: Tom Rix <trix@...hat.com>
---
 kernel/sched/deadline.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index a8a08030a8f7..fbafd97d883a 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1821,14 +1821,6 @@ static void task_tick_dl(struct rq *rq, struct task_struct *p, int queued)
         start_hrtick_dl(rq, p);
 }
 
-static void task_fork_dl(struct task_struct *p)
-{
-    /*
-     * SCHED_DEADLINE tasks cannot fork and this is achieved through
-     * sched_fork()
-     */
-}
-
 #ifdef CONFIG_SMP
 
 /* Only try algorithms three times */
@@ -2451,8 +2443,6 @@ const struct sched_class dl_sched_class = {
 #endif
 
     .task_tick        = task_tick_dl,
-    .task_fork              = task_fork_dl,
-
     .prio_changed           = prio_changed_dl,
     .switched_from        = switched_from_dl,
     .switched_to        = switched_to_dl,
-- 
2.23.0