Re: [PATCH tip:irq/core v1] genirq: remove auto-set of the mask when setting the hint

From: Thomas Gleixner
Date: Mon May 17 2021 - 15:43:59 EST

On Mon, May 17 2021 at 21:08, Thomas Gleixner wrote:
> On Mon, May 17 2021 at 19:50, Robin Murphy wrote:
>> some of the callers in other subsystems appear to *expect* it to set
>> the underlying affinity as well, but whether any of those added within
>> the last 6 years represent a functional dependency rather than just a
>> performance concern I don't know.
> Sigh. Let me do yet another tree wide audit...

It's clearly only the perf muck which has a functional dependency.

None of the other usage sites has IRQF_NOBALANCING set which clearly
makes this a hint because user space can freely muck with the affinity.