Hi all, Except for iwlmvm, I don't find much RCU usage wrt. stations in drivers. Is there any other driver that assumes it is safe to delete a station pointer in the sta_state callback and not use synchronize_rcu()? From looking at the code, I don't see any, but I can't really be sure that everyone uses __rcu annotations correctly ... :) Would anyone object if we changed mac80211 to *immediately* free the station after calling the driver's sta_state (or sta_remove) callback? We currently delay this until after an RCU grace period, but that way we end up having a lot of delay in station freeing ... We'd like to optimise that. johannes PS: I'll probably have to add another callback "sta going away before RCU" so you can invalidate pointers there ... otherwise I'd have to synchronize_rcu() in iwlmvm which would kinda defeat the purpose. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
