Re: [patch 1/3] timekeeping: Annotate ktime_get_boot_fast_ns() with data_race()

[Thomas Gleixner]

On Fri, Apr 15 2022 at 14:07, Peter Zijlstra wrote:
> On Fri, Apr 15, 2022 at 11:19:35AM +0200, Thomas Gleixner wrote:
>> Accessing timekeeper::offset_boot in ktime_get_boot_fast_ns() is an
>> intended data race as the reader side cannot synchronize with a writer and
>> there is no space in struct tk_read_base of the NMI safe timekeeper.
>> 
>> Mark it so.
>
> If offs_boot actually ever changed?

Yes, during resume to compensate for the time spent in suspend. So, yes
the data_race() is more of documentary value.

Thanks,

        tglx