The following commit has been merged into the sched/core branch of tip:
Commit-ID: e3e76a6a04114ec95b0969cd026e8904c67b431b
Gitweb: https://git.kernel.org/tip/e3e76a6a04114ec95b0969cd026e8904c67b431b
Author: Dietmar Eggemann <dietmar.eggemann@xxxxxxx>
AuthorDate: Wed, 03 Jun 2020 10:03:03 +02:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Mon, 15 Jun 2020 14:10:01 +02:00
sched/idle,stop: Remove .get_rr_interval from sched_class
The idle task and stop task sched_classes return 0 in this function.
The single call site in sched_rr_get_interval() calls
p->sched_class->get_rr_interval() only conditional in case it is
defined. Otherwise time_slice=0 will be used.
The deadline sched class does not define it. Commit a57beec5d427
("sched: Make sched_class::get_rr_interval() optional") introduced
the default time-slice=0 for sched classes which do not provide this
function.
So .get_rr_interval for idle and stop sched_class can be removed to
shrink the code a little.
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@xxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20200603080304.16548-4-dietmar.eggemann@xxxxxxx
---
kernel/sched/idle.c | 7 -------
kernel/sched/stop_task.c | 8 --------
2 files changed, 15 deletions(-)
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index 05deb81..8d75ca2 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -446,11 +446,6 @@ prio_changed_idle(struct rq *rq, struct task_struct *p, int oldprio)
BUG();
}
-static unsigned int get_rr_interval_idle(struct rq *rq, struct task_struct *task)
-{
- return 0;
-}
-
static void update_curr_idle(struct rq *rq)
{
}
@@ -479,8 +474,6 @@ const struct sched_class idle_sched_class = {
.task_tick = task_tick_idle,
- .get_rr_interval = get_rr_interval_idle,
-
.prio_changed = prio_changed_idle,
.switched_to = switched_to_idle,
.update_curr = update_curr_idle,
diff --git a/kernel/sched/stop_task.c b/kernel/sched/stop_task.c
index 4c9e997..3e50a6a 100644
--- a/kernel/sched/stop_task.c
+++ b/kernel/sched/stop_task.c
@@ -102,12 +102,6 @@ prio_changed_stop(struct rq *rq, struct task_struct *p, int oldprio)
BUG(); /* how!?, what priority? */
}
-static unsigned int
-get_rr_interval_stop(struct rq *rq, struct task_struct *task)
-{
- return 0;
-}
-
static void update_curr_stop(struct rq *rq)
{
}
@@ -136,8 +130,6 @@ const struct sched_class stop_sched_class = {
.task_tick = task_tick_stop,
- .get_rr_interval = get_rr_interval_stop,
-
.prio_changed = prio_changed_stop,
.switched_to = switched_to_stop,
.update_curr = update_curr_stop,
|