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SubjectRe: [patch 4/5] posix-cpu-timers: Defer timer handling to task_work
On Thu, 1 Aug 2019, Peter Zijlstra wrote:
> On Thu, Aug 01, 2019 at 04:32:54PM +0200, Thomas Gleixner wrote:
> > --- a/kernel/time/Kconfig
> > +++ b/kernel/time/Kconfig
> > @@ -52,6 +52,11 @@ config GENERIC_CLOCKEVENTS_MIN_ADJUST
> > config GENERIC_CMOS_UPDATE
> > bool
> >
> > +# Select to handle posix CPU timers from task_work
> > +# and not from the timer interrupt context
> > +config POSIX_CPU_TIMERS_TASK_WORK
> > + bool
> > +
> > if GENERIC_CLOCKEVENTS
> > menu "Timers subsystem"
> >
>
>
> diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
> index deff97217496..76e37ad5bc31 100644
> --- a/kernel/Kconfig.preempt
> +++ b/kernel/Kconfig.preempt
> @@ -58,6 +58,7 @@ config PREEMPT
> config PREEMPT_RT
> bool "Fully Preemptible Kernel (Real-Time)"
> depends on EXPERT && ARCH_SUPPORTS_RT
> + depends on POSIX_CPU_TIMERS_TASK_WORK

Indeed.

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