On Fri, Sep 13, 2024 at 12:06 PM Jeff Layton <jlay...@kernel.org> wrote: > On Fri, 2024-09-13 at 11:59 -0700, John Stultz wrote: > > > +/** > > > + * ktime_get_real_ts64_mg - attempt to update floor value and return > > > result > > > + * @ts: pointer to the timespec to be set > > > + * @cookie: opaque cookie from earlier call to > > > ktime_get_coarse_real_ts64_mg() > > > + * > > > + * Get a current monotonic fine-grained time value and attempt to swap > > > + * it into the floor using @cookie as the "old" value. @ts will be > > > + * filled with the resulting floor value, regardless of the outcome of > > > + * the swap. > > > > I'd add more detail here to clarify that this can return a coarse > > floor value if the cookie is stale. > > > > Sure, or I can just drop the cookie, if that's better.
That seems like the simpler approach, but I don't have a sense of the actual performance impact, so I'll leave that decision to you. thanks -john
