Commit 2a0a24eb authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

sched: Make scheduler_ipi inline 



Now that the scheduler IPI is trivial and simple again there is no point to
have the little function out of line. This simplifies the effort of
constraining the instrumentation nicely.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarAlexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200505134058.453581595@linutronix.de
parent 90b5363a

include/linux/sched.h

+9 −1
Original line number Diff line number Diff line
@@ -1715,7 +1715,15 @@ extern char *__get_task_comm(char *to, size_t len, struct task_struct *tsk); 
})



#ifdef CONFIG_SMP

void scheduler_ipi(void);

static __always_inline void scheduler_ipi(void)

{

	/*

	 * Fold TIF_NEED_RESCHED into the preempt_count; anybody setting

	 * TIF_NEED_RESCHED remotely (for the first time) will also send

	 * this IPI.

	 */

	preempt_fold_need_resched();

}

extern unsigned long wait_task_inactive(struct task_struct *, long match_state);

#else

static inline void scheduler_ipi(void) { }

kernel/sched/core.c

+0 −10
Original line number Diff line number Diff line
@@ -2312,16 +2312,6 @@ static void wake_csd_func(void *info) 
	sched_ttwu_pending();

}



void scheduler_ipi(void)

{

	/*

	 * Fold TIF_NEED_RESCHED into the preempt_count; anybody setting

	 * TIF_NEED_RESCHED remotely (for the first time) will also send

	 * this IPI.

	 */

	preempt_fold_need_resched();

}



static void ttwu_queue_remote(struct task_struct *p, int cpu, int wake_flags)

{

	struct rq *rq = cpu_rq(cpu);

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