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SubjectRe: [PATCH RFC tip/core/rcu 0/5] Expedited grace periods encouraging normal ones

* Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:

> > And it's not like it's that hard to stem the flow of algorithmic sloppiness at
> > the source, right?
>
> OK, first let me make sure that I understand what you are asking for:
>
> 1. Completely eliminate synchronize_rcu_expedited() and
> synchronize_sched_expedited(), replacing all uses with their
> unexpedited counterparts. (Note that synchronize_srcu_expedited()
> does not wake up CPUs, courtesy of its read-side memory barriers.)
> The fast-boot guys are probably going to complain, along with
> the networking guys.
>
> 2. Keep synchronize_rcu_expedited() and synchronize_sched_expedited(),
> but push back hard on any new uses and question any existing uses.
>
> 3. Revert 74b51ee152b6 ("ACPI / osl: speedup grace period in
> acpi_os_map_cleanup").
>
> 4. Something else?

I'd love to have 1) but 2) would be a realistic second best option? ;-)

Thanks,

Ingo


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