Re: [PATCH v6 12/23] virt: Introduce steal monitor driver

[Shrikanth Hegde]

On 7/3/26 11:57 PM, Yury Norov wrote:
> On Fri, Jul 03, 2026 at 02:20:32PM -0400, Yury Norov wrote:
> > On Wed, Jul 01, 2026 at 07:46:43PM +0530, Shrikanth Hegde wrote:
> > > Introduce a new driver in virt named steal_monitor. This driver
> > > will compute the steal time and drive the policy decisions of preferred
> > > CPU state.
> > >
> > > More on it can be found in the Documentation/driver-api/steal-monitor.rst
> > > Introduce the skeleton code first.
> > >
> > > There is no new kconfig. It depends on CONFIG_PREFERRED_CPU.
> > > - If CONFIG_PREFERRED_CPU=y, it gets compiled as a module. It is not
> > >    loaded by default.
>
> What if I've got my own monitor, and don't need this one? Please add a
> way to not compile it, even if CONFIG_PREFERRED_CPU is enabled.

You mean make a new config like VIRT_MONITOR depend on CONFIG_PREFERRED_CPU and
make it as default n?

Can we defer this until such a new monitor is needed?
We will in state where CONFIG_PREFERRED_CPU=y & VIRT_MONITOR=n.