Messages in this thread | | | Date | Sat, 17 Aug 2013 20:18:32 -0700 | From | Josh Triplett <> | Subject | Re: [PATCH tip/core/rcu 02/11] rcu: Expedite during suspend and resume only on smallish systems |
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On Sat, Aug 17, 2013 at 06:37:47PM -0700, Paul E. McKenney wrote: > From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> > > Expedited grace periods are of dubious benefit on very large systems, > so this commit restricts their automated use during suspend and resume > to systems of 256 or fewer CPUs. > > Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This seems odd. If expedited grace periods don't help on large systems, shouldn't you just compile them out entirely and ignore rcu_expedited, rather than just in this one special case?
In any case, if this patch still makes sense, please squash it into the previous one.
- Josh Triplett
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