From: Paolo Valente <paolo.valente@unimore.it>
To: David Miller <davem@davemloft.net>
Cc: jhs@mojatatu.com, shemminger@vyatta.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
rizzo@iet.unipi.it, fchecconi@gmail.com
Subject: Re: [PATCH] pkt_sched: QFQ Plus: fair-queueing service at DRR cost
Date: Tue, 20 Nov 2012 18:45:02 +0100 [thread overview]
Message-ID: <50ABC19E.9030209@unimore.it> (raw)
In-Reply-To: <20121119.184828.628106002307042971.davem@davemloft.net>
Il 20/11/2012 00:48, David Miller ha scritto:
> From: Paolo Valente <paolo.valente@unimore.it>
> Date: Mon, 12 Nov 2012 17:48:33 +0100
>
>> [This patch received positive feedback from Stephen Hemminger ("put in
>> net-next"), but no further feedback or decision. So I am (re)sending
>> an updated version of it. The only differences with respect to the
>> previous version are the support for TSO/GSO (taken from QFQ), and a
>> hopefully improved description.]
>
> Can you rearrange the logic so that the compiler doesn't emit this
> warning?
>
> In file included from net/sched/sch_qfq.c:18:0:
> net/sched/sch_qfq.c: In function ‘qfq_dequeue’:
> include/net/sch_generic.h:480:15: warning: ‘skb’ may be used uninitialized in this function [-Wmaybe-uninitialized]
> net/sched/sch_qfq.c:1007:18: note: ‘skb’ was declared here
>
> You and I both know that SKB will be initialized at this point, but
> the compiler can't see it clearly enough.
>
Unfortunately I could not reproduce the warning (with
gcc-4.7 -Wmaybe-uninitialized). I am however about to send a new version
with skb initialized to NULL. I hope that this fix properly addresses
this issue.
> Thanks.
>
--
-----------------------------------------------------------
| Paolo Valente | |
| Algogroup | |
| Dip. Ing. Informazione | tel: +39 059 2056318 |
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next prev parent reply other threads:[~2012-11-20 17:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-12 16:48 [PATCH] pkt_sched: QFQ Plus: fair-queueing service at DRR cost Paolo Valente
2012-11-19 23:48 ` David Miller
2012-11-20 17:45 ` Paolo Valente [this message]
2012-11-20 17:53 ` Stephen Hemminger
2012-11-20 18:02 ` David Miller
2012-11-20 18:09 ` Stephen Hemminger
2012-11-20 18:15 ` David Miller
2012-11-20 18:44 ` Stephen Hemminger
2012-11-20 18:00 ` David Miller
2012-11-20 17:45 Paolo Valente
2012-11-20 18:54 ` David Miller
2012-11-21 9:45 ` Paolo Valente
2012-11-21 17:04 ` David Miller
2012-11-22 16:56 Paolo Valente
2012-11-23 19:28 ` David Miller
2012-11-23 21:02 ` Paolo Valente
2012-11-23 21:03 Paolo Valente
2012-11-28 16:20 ` David Miller
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