On Wed, Mar 29, 2023 at 06:01:59PM +0200, Frederic Weisbecker wrote: > Changes since v1 (https://lore.kernel.org/lkml/20230322194456.2331527-1-frederic@xxxxxxxxxx/): > > * Use mutex_trylock() to avoid inverted dependency chain against > allocations. > > * WARN if an rdp is part of nocb mask but is not offloaded > > Tested through shrinker debugfs interface. I pulled this one in, thank you! As discussed, we do need some way to test lazy callbacks, but that should not block this series. And it might well be a separate test. Thanx, Paul > Frederic Weisbecker (4): > rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading > rcu/nocb: Fix shrinker race against callback enqueuer > rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker > rcu/nocb: Make shrinker to iterate only NOCB CPUs > > kernel/rcu/tree_nocb.h | 52 ++++++++++++++++++++++++++++++++++++++---- > 1 file changed, 47 insertions(+), 5 deletions(-) > > -- > 2.34.1 >
