From: Patrick McHardy <kaber@trash.net>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org, johannes@sipsolutions.net,
linux-wireless@vger.kernel.org
Subject: Re: [PATCH 20/31]: pkt_sched: Perform bulk of qdisc destruction in RCU.
Date: Thu, 17 Jul 2008 15:48:22 +0200 [thread overview]
Message-ID: <487F4DA6.6010009@trash.net> (raw)
In-Reply-To: <20080717.061239.51839567.davem@davemloft.net>
David Miller wrote:
> From: Patrick McHardy <kaber@trash.net>
> Date: Thu, 17 Jul 2008 15:03:35 +0200
>
>> Still working my way through the patches, but this one caught my
>> eye (we had this before and it caused quite a few problems).
>
> Indeed, it's the most delicate change.
>
> Thanks for the info about all the tricky bits in this area.
One thought that occured to me - we could avoid all the visiblity
issues wrt. dev->qdisc_list by simply getting rid of it :)
If we move the qdisc list from the device to the root Qdisc itself,
it would become invisible automatically as soon as we assign a new
root qdisc to the netdev_queue. Iteration would become slightly
more complicated since we'd have to iterate over all netdev_queues,
but I think it should avoid most of the problems I mentioned
(besides the u32_list thing).
next prev parent reply other threads:[~2008-07-17 13:48 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 12:17 [PATCH 20/31]: pkt_sched: Perform bulk of qdisc destruction in RCU David Miller
[not found] ` <20080717.051726.226040470.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-17 13:03 ` Patrick McHardy
[not found] ` <487F4327.1000107-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org>
2008-07-17 13:12 ` David Miller
2008-07-17 13:48 ` Patrick McHardy [this message]
[not found] ` <487F4DA6.6010009-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org>
2008-07-17 22:36 ` David Miller
[not found] ` <20080717.153609.142867331.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-17 23:58 ` Patrick McHardy
2008-07-17 13:35 ` jamal
2008-07-17 14:02 ` Patrick McHardy
[not found] ` <487F50EC.80008-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org>
2008-07-17 22:24 ` David Miller
[not found] ` <20080717.152447.89672084.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-17 23:48 ` Patrick McHardy
2008-07-18 13:10 ` jamal
2008-07-18 13:27 ` jamal
2008-07-18 21:05 ` David Miller
2008-07-20 15:16 ` jamal
2008-07-20 17:25 ` David Miller
[not found] ` <20080720.102534.246150854.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-20 17:34 ` Tomas Winkler
[not found] ` <1ba2fa240807201034u1fbe3343tdcc858f7772d2b39-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-20 17:35 ` David Miller
2008-07-20 22:32 ` jamal
2008-07-20 23:59 ` David Miller
2008-07-21 2:20 ` jamal
2008-07-21 11:20 ` jamal
2008-07-21 16:45 ` David Miller
2008-07-21 11:58 ` Herbert Xu
[not found] ` <E1KKu2D-0002kd-00-XQvu0L+U/CjiRBuR/1fSEKKkPtS2pBon@public.gmane.org>
2008-07-21 13:08 ` jamal
2008-07-21 13:19 ` Herbert Xu
2008-07-21 13:56 ` jamal
2008-07-21 13:58 ` Herbert Xu
[not found] ` <20080721135846.GA11543-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-07-21 15:09 ` David Miller
[not found] ` <20080721.080901.214889979.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-21 15:22 ` Herbert Xu
2008-07-21 15:26 ` David Miller
[not found] ` <20080721.082627.128593651.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-21 16:16 ` Herbert Xu
[not found] ` <20080721161616.GA12938-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-07-21 16:25 ` David Miller
2008-07-21 16:43 ` Herbert Xu
2008-07-21 16:51 ` David Miller
[not found] ` <20080721.095124.89249903.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-21 17:02 ` Herbert Xu
[not found] ` <20080721170233.GA13417-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-07-21 17:08 ` David Miller
[not found] ` <20080721.100821.38432201.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-07-21 17:11 ` Herbert Xu
2008-08-22 6:56 ` Herbert Xu
2008-08-22 7:16 ` David Miller
[not found] ` <20080822.001620.141235108.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-08-22 7:41 ` Herbert Xu
[not found] ` <20080822074115.GB25615-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-08-22 10:42 ` David Miller
[not found] ` <20080822.034217.135152551.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2008-08-22 10:47 ` Herbert Xu
2008-08-22 13:52 ` jamal
[not found] ` <20080822065655.GA18471-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-08-22 13:43 ` jamal
2008-07-21 17:35 ` David Miller
2008-07-18 17:10 ` Roland Dreier
[not found] ` <adaljzz6ruq.fsf-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2008-07-20 14:58 ` jamal
2008-07-20 14:32 ` Herbert Xu
2008-07-20 17:20 ` David Miller
2008-07-20 14:20 ` Herbert Xu
[not found] ` <E1KKZmE-0000ty-00-XQvu0L+U/CjiRBuR/1fSEKKkPtS2pBon@public.gmane.org>
2008-07-20 15:35 ` jamal
2008-07-21 0:11 ` Herbert Xu
[not found] ` <20080721001119.GA6515-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-07-21 2:33 ` jamal
2008-07-21 3:17 ` Herbert Xu
2008-07-21 11:14 ` jamal
2008-07-21 11:36 ` Herbert Xu
[not found] ` <20080721113600.GA10322-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2008-07-21 11:39 ` jamal
2008-07-19 3:59 ` David Miller
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