Re: [PATCH 1/3] cpuidle: Add enable_cpuidle() interface

[Rafael J. Wysocki]

On Thu, Mar 26, 2026 at 1:17 PM lihuisong (C) <lihuisong@xxxxxxxxxx> wrote:
>
> Hi Rafael,
>
> On 1/30/2026 9:59 AM, lihuisong (C) wrote:
> > Hi Rafael,
> >
> > On 1/15/2026 8:18 PM, lihuisong (C) wrote:
> >>
> >> On 1/15/2026 3:18 AM, Rafael J. Wysocki wrote:
> >>> On Tue, Nov 25, 2025 at 8:29 AM Huisong Li <lihuisong@xxxxxxxxxx>
> >>> wrote:
> >>>> The global switch of cpuidle can be turned back on in some case.
> >>>> So add enable_cpuidle().
> >>> No, this is not going to work.  The "off" switch only affects
> >>> initialization AFAICS.
> >> I think it would be work.
> >> The cpuidle_not_available() also see the "off" on do_idle().
> >> And cpuidle_idle_call() check this function first and then select
> >> idle state.
> >> Cpuidle doesn't select and enter idle state if this fuction return true.
> > I verified that disable_cpuidle() effectively prevents all CPUs from
> > entering any idle states and the cpuidle function is correctly
> > restored after calling enable_cpuidle().
> > What do you think?
> Could you pleasetake a look atmy reply?
> If not ok, I will drop this from my upstream list.

Sorry, can you please remind me what problem you wanted to address
with the help of this?