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sched/smp: Use the SMP version of the idle scheduling class 

Simplify the scheduler by making CONFIG_SMP=y code in the
idle scheduling classunconditional.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20250528080924.2273858-35-mingo@kernel.org
This commit is contained in:
Ingo Molnar 2025-05-28 10:09:15 +02:00
parent 6c8d251621
commit 482c4dae75
1 changed files with 0 additions and 4 deletions
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4
kernel/sched/idle.c
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@ -432,7 +432,6 @@ void cpu_startup_entry(enum cpuhp_state state)
* idle-task scheduling class. * idle-task scheduling class.
*/ */
#ifdef CONFIG_SMP
static int static int
select_task_rq_idle(struct task_struct *p, int cpu, int flags) select_task_rq_idle(struct task_struct *p, int cpu, int flags)
{ {
@ -444,7 +443,6 @@ balance_idle(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)
{ {
return WARN_ON_ONCE(1); return WARN_ON_ONCE(1);
} }
#endif /* CONFIG_SMP */
/* /*
* Idle tasks are unconditionally rescheduled: * Idle tasks are unconditionally rescheduled:
@ -531,11 +529,9 @@ DEFINE_SCHED_CLASS(idle) = {
.put_prev_task = put_prev_task_idle, .put_prev_task = put_prev_task_idle,
.set_next_task = set_next_task_idle, .set_next_task = set_next_task_idle,
#ifdef CONFIG_SMP
.balance = balance_idle, .balance = balance_idle,
.select_task_rq = select_task_rq_idle, .select_task_rq = select_task_rq_idle,
.set_cpus_allowed = set_cpus_allowed_common, .set_cpus_allowed = set_cpus_allowed_common,
#endif
.task_tick = task_tick_idle, .task_tick = task_tick_idle,