Messages in this thread | | | Date | Wed, 1 Jul 2015 12:09:39 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH RFC tip/core/rcu 0/5] Expedited grace periods encouraging normal ones |
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On Tue, Jun 30, 2015 at 04:46:33PM -0700, josh@joshtriplett.org wrote: > Consider it a fairly weak concern against. Increasing performance seems > like a good thing in general; I just don't relish the future "feels less > responsive" bug reports that take a long time to track down and turn out > to be "this completely unrelated driver was loaded and started using > expedited grace periods".
random drivers, or for that matter, new-code of any sort. Should _NOT_ be using expedited grace periods.
They're a horrid hack only suitable for unfixable ABI.
> Then again, perhaps the more relevant concern would be why drivers use > expedited grace periods in the first place.
Right.
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