From: Johannes Berg <johannes@sipsolutions.net>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: Matteo Croce <mcroce@redhat.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: hung task in mac80211
Date: Wed, 06 Sep 2017 16:30:00 +0200 [thread overview]
Message-ID: <1504708200.23905.3.camel@sipsolutions.net> (raw)
In-Reply-To: <20170906162748.071b040e@elisabeth>
On Wed, 2017-09-06 at 16:27 +0200, Stefano Brivio wrote:
>
> Sorry for the extended bothering :) but here, you're extending quite
> a bit the scope of the lock also
> when__ieee80211_start_rx_ba_session() is called by
> ieee80211_process_addba_request().
I know, but it doesn't matter.
> No idea what the hit can be, but we can't safely assume it's
> nothing either.
We don't really have to assume anything, we can read the code :-)
Trust me, I probably wrote most of it. It's fine, just sanity checks.
> What about simply introducing a 'ampdu_mlme_lock_held' argument
> instead?
Eww, no.
johannes
next prev parent reply other threads:[~2017-09-06 14:30 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-06 11:57 hung task in mac80211 Matteo Croce
[not found] ` <CAGnkfhwi9MmtLneeU23iWEGLj9cb1ODb3KzzOqTDvA6nNVsugg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-06 12:28 ` Christian Lamparter
2017-09-06 12:40 ` Stefano Brivio
2017-09-06 12:48 ` Johannes Berg
2017-09-06 13:03 ` Johannes Berg
[not found] ` <1504702990.13457.19.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2017-09-06 13:08 ` Sebastian Gottschall
2017-09-06 13:19 ` Stefano Brivio
2017-09-06 13:21 ` Johannes Berg
2017-09-06 13:27 ` Stefano Brivio
2017-09-06 13:30 ` Johannes Berg
2017-09-06 13:40 ` Stefano Brivio
2017-09-06 13:07 ` Matteo Croce
2017-09-06 12:58 ` Johannes Berg
2017-09-06 14:27 ` Stefano Brivio
2017-09-06 14:30 ` Johannes Berg [this message]
2017-09-06 15:04 ` Matteo Croce
2017-09-06 15:11 ` Johannes Berg
2017-09-06 15:45 ` Sebastian Gottschall
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