From: Jakub Kicinski <kuba@kernel.org>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [RFC PATCH 2/2] mac80211: use the new drop reasons infrastructure
Date: Wed, 29 Mar 2023 21:06:33 -0700 [thread overview]
Message-ID: <20230329210633.39cca656@kernel.org> (raw)
In-Reply-To: <34e43da3694e2d627555af0149ebe438e1ed2938.camel@sipsolutions.net>
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?
next prev parent reply other threads:[~2023-03-30 4:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-29 21:46 [RFC PATCH 1/2] net: extend drop reasons for multiple subsystems Johannes Berg
2023-03-29 21:46 ` [RFC PATCH 2/2] mac80211: use the new drop reasons infrastructure Johannes Berg
2023-03-29 21:56 ` Johannes Berg
2023-03-30 4:06 ` Jakub Kicinski [this message]
2023-03-30 8:14 ` Johannes Berg
2023-03-30 4:05 ` Jakub Kicinski
2023-03-30 8:14 ` Johannes Berg
2023-03-29 23:36 ` [RFC PATCH 1/2] net: extend drop reasons for multiple subsystems kernel test robot
2023-03-30 0:07 ` kernel test robot
2023-03-30 4:05 ` Jakub Kicinski
2023-03-30 8:11 ` Johannes Berg
2023-03-30 17:37 ` Jakub Kicinski
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