On ma, 2017-05-01 at 11:05 +0900, J. R. Okajima wrote: > Thanx for the reply. > > Andrea Arcangeli: > > > > Yes I already reported this, my original fix was way more efficient > > (and also safer considering the above) than what landed upstream. My > > feedback was ignored though. > > > > https://lists.freedesktop.org/archives/intel-gfx/2017-April/125414.html > > I see. > Actually on my test system for v4.11-rc8, kthreadd, kworker, kswapd and > others all stopped working due to the synchronize_rcu_expedited call > from i915_gem_shrinker_count. It is definitly a show stopper for me as > an i915 user.
Filing a bug in freedesktop.org with all the details is the fastest way of getting help. Without the bug (and with such little information as the previous e-mail) it's hard to estimate the extent and nature of the bug. I've anyway gone and prepared a patch to drop the RCU sync completely from shrinker phase, as discussed originally with Chris. Regards, Joonas -- Joonas Lahtinen Open Source Technology Center Intel Corporation
