On Wed, 29 Mar 2023 23:56:31 +0200 Johannes Berg wrote: > > + drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR); > > + drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE); > > + > > rcu_barrier(); > > This is making me think that perhaps we don't want synchronize_rcu() > inside drop_reasons_unregister_subsys(), since I have two now and also > already have an rcu_barrier() ... so maybe just document that it's > needed? premature optimization? some workload is reloading mac80211 in a loop?
