Re: [PATCH RESEND 1/7] sched/core: Fix preempt_schedule() interrupt return comment

From: Thomas Gleixner
Date: Tue Jun 11 2019 - 15:34:47 EST


On Tue, 28 May 2019, Valentin Schneider wrote:
> Duh, forgot to cc the relevant folks on this one...

Nevertheless:

Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

> On 28/05/2019 11:48, Valentin Schneider wrote:
> > preempt_schedule_irq() is the one that should be called on return from
> > interrupt, clean up the comment to avoid any ambiguity.
> >
> > Signed-off-by: Valentin Schneider <valentin.schneider@xxxxxxx>
> > ---
> > kernel/sched/core.c | 7 +++----
> > 1 file changed, 3 insertions(+), 4 deletions(-)
> >
> > diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> > index 874c427742a9..55ebc2cfb08c 100644
> > --- a/kernel/sched/core.c
> > +++ b/kernel/sched/core.c
> > @@ -3600,9 +3600,8 @@ static void __sched notrace preempt_schedule_common(void)
> >
> > #ifdef CONFIG_PREEMPT
> > /*
> > - * this is the entry point to schedule() from in-kernel preemption
> > - * off of preempt_enable. Kernel preemptions off return from interrupt
> > - * occur there and call schedule directly.
> > + * This is the entry point to schedule() from in-kernel preemption
> > + * off of preempt_enable.
> > */
> > asmlinkage __visible void __sched notrace preempt_schedule(void)
> > {
> > @@ -3673,7 +3672,7 @@ EXPORT_SYMBOL_GPL(preempt_schedule_notrace);
> > #endif /* CONFIG_PREEMPT */
> >
> > /*
> > - * this is the entry point to schedule() from kernel preemption
> > + * This is the entry point to schedule() from kernel preemption
> > * off of irq context.
> > * Note, that this is called and return with irqs disabled. This will
> > * protect us against recursive calling from irq.
> >
>