Am 16.09.2015 um 10:32 schrieb Paolo Bonzini: > > > On 15/09/2015 19:38, Paul E. McKenney wrote: >> Excellent points! >> >> Other options in such situations include the following: >> >> o Rework so that the code uses call_rcu*() instead of *_expedited(). >> >> o Maintain a per-task or per-CPU counter so that every so many >> *_expedited() invocations instead uses the non-expedited >> counterpart. (For example, synchronize_rcu instead of >> synchronize_rcu_expedited().) > > Or just use ratelimit (untested): One of my tests was to always replace synchronize_sched_expedited with synchronize_sched and things turned out to be even worse. Not sure if it makes sense to test yopur in-the-middle approach? Christian -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
