Messages in this thread | | | Date | Wed, 13 Jul 2016 14:08:57 -0700 | From | "Paul E. McKenney" <> | Subject | Re: Severe performance regression w/ 4.4+ on Android due to cgroup locking changes |
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On Wed, Jul 13, 2016 at 10:57:12PM +0200, Peter Zijlstra wrote: > On Wed, Jul 13, 2016 at 01:52:11PM -0700, Paul E. McKenney wrote: > > Not a particularly real-time-friendly fix, but certainly a good check > > on our various assumptions. > > Not only RT, but also HPC and all the other RDMA userspace polling > freaks ;-)
If Tejun's lglock-like approach doesn't pan out, then it would quite easy to make a boot parameter that selected expedited vs. non-expedited behavior.
Thanx, Paul
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