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Re: [Xen-devel] [PATCH v4 2/5] build: Hook the schedulers into Kconfig



On 08/01/16 21:22, Jonathan Creekmore wrote:
> +# Enable schedulers
> +menu "Schedulers"
> +     visible if EXPERT = "y"
> +
> +config SCHED_CREDIT
> +     bool "Credit scheduler support"
> +     default y
> +     ---help---
> +       The traditional credit scheduler is a general purpose scheduler.
> +
> +       If unsure, say Y.
> +
> +config SCHED_CREDIT2
> +     bool "Credit2 scheduler support (EXPERIMENTAL)"
> +     default y
> +     ---help---
> +       The credit2 scheduler is a general purpose scheduler that is
> +       optimized for lower latency and higher VM density.
> +
> +       If unsure, say Y.
> +
> +config SCHED_RTDS
> +     bool "RTDS scheduler support (EXPERIMENTAL)"
> +     default y
> +     ---help---
> +       The RTDS scheduler is a soft and firm real-time scheduler for
> +       multicore, targeted for embedded, automotive, graphics and gaming
> +       in the cloud, and general low-latency workloads.
> +
> +       If unsure, say N.
> +
> +config SCHED_ARINC653
> +     bool "ARINC653 scheduler support (EXPERIMENTAL)"
> +     default y
> +     ---help---
> +       The ARINC653 scheduler is a hard real-time scheduler for single
> +       cores, targeted for avionics, drones, and medical devices.
> +
> +       If unsure, say N.

Sorry for not noticing this before.  The "If unsure, say $X" should
really match the default value.

On the other hand, given that we are hiding all these options behind
CONFIG_EXPERT, I am not sure that we need "If unsure" clauses.  Anyone
who isn't sure shouldn't have turned on CONFIG_EXPERT to start with.

~Andrew

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