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sched/smp: Always define is_percpu_thread() and scheduler_ipi()

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Simplify the scheduler by making the CONFIG_SMP=y primitives
of is_percpu_thread() and scheduler_ipi() unconditional.

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/20250528080924.2273858-22-mingo@kernel.org
This commit is contained in:
Ingo Molnar 2025-05-28 10:09:02 +02:00
parent cac5cefbad
commit 06ddd17521
1 changed files with 0 additions and 8 deletions
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8
include/linux/sched.h
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@ -1765,12 +1765,8 @@ extern struct pid *cad_pid;
static __always_inline bool is_percpu_thread(void) static __always_inline bool is_percpu_thread(void)
{ {
#ifdef CONFIG_SMP
return (current->flags & PF_NO_SETAFFINITY) && return (current->flags & PF_NO_SETAFFINITY) &&
(current->nr_cpus_allowed == 1); (current->nr_cpus_allowed == 1);
#else
return true;
#endif
} }
/* Per-process atomic flags. */ /* Per-process atomic flags. */
@ -1967,7 +1963,6 @@ extern void __set_task_comm(struct task_struct *tsk, const char *from, bool exec
buf; \ buf; \
}) })
#ifdef CONFIG_SMP
static __always_inline void scheduler_ipi(void) static __always_inline void scheduler_ipi(void)
{ {
/* /*
@ -1977,9 +1972,6 @@ static __always_inline void scheduler_ipi(void)
*/ */
preempt_fold_need_resched(); preempt_fold_need_resched();
} }
#else
static inline void scheduler_ipi(void) { }
#endif
extern unsigned long wait_task_inactive(struct task_struct *, unsigned int match_state); extern unsigned long wait_task_inactive(struct task_struct *, unsigned int match_state);