On Mon, May 17 2021 at 21:08, Thomas Gleixner wrote:

On Mon, May 17 2021 at 19:50, Robin Murphy wrote:

quoted

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.

Thanks,

        tglx