[PATCH v2 1/2] smp: Introduce a helper function to check for pending IPIs

[Thomas Gleixner]

On Tue, Oct 21 2025 at 12:08, Ulf Hansson wrote:

> On Mon, 20 Oct 2025 at 21:11, Ben Horgan <ben.horgan at arm.com> wrote:
>>
>> Hi Ulf,
>>
>> Only a comment on the naming rather than a full review.
>>
>> On 10/20/25 15:17, Ulf Hansson wrote:
>> > When governors used during cpuidle, tries to find the most optimal
>> > idlestate for a CPU or a group of CPUs, they are known to quite often fail.
>> > One reason for this, is that we are not taking into account whether there
>> > has been an IPI scheduled for any of the CPUs that are affected by the
>> > selected idlestate.
>> >
>> > To enable pending IPIs to be taken into account for cpuidle decisions,
>> > let's introduce a new helper function, cpus_may_have_pending_ipi().
>>
>> To me, "may" indicates permission, i.e. is allowed, rather than
>> correctness. Would "likely" be better here, cpus_likely_have_pending_ipi()?
>
> Sure, that sounds better to me too.

cpus_peek_for_pending_ipis() perhaps?