[PATCHv10 03/18] cpu/hotplug: Add support for declaring CPU offlining not supported

[Borislav Petkov]

On Fri, Apr 19, 2024 at 04:31:39PM +0300, Kirill A. Shutemov wrote:
> Yes, it is one-off. I guess we could use READ_ONCE()/WRITE_ONCE() to
> access the variable with the same result. I am not sure why it would be
> better.

Nah, and it is not even the first one-off:

cpu_hotplug_disable/_enable() uses the same locking to update
cpu_hotplug_disabled.

I guess we need to update the comment over cpu_maps_update_begin().

I guess this is fine wrt big picture of the CPU hotplug universe. Lemme
point tglx to it just in case.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette