From: "Michael Chan" <mchan@broadcom.com>
To: hadi@cyberus.ca
Cc: "Brandeburg, Jesse" <jesse.brandeburg@intel.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
auke-jan.h.kok@intel.com, netdev@vger.kernel.org
Subject: Re: [PATCH] [e1000]: Remove unnecessary tx_lock
Date: Thu, 03 Aug 2006 17:09:57 -0700 [thread overview]
Message-ID: <1154650197.3117.32.camel@rh4> (raw)
In-Reply-To: <1154642918.5187.13.camel@jzny2>
On Thu, 2006-08-03 at 18:08 -0400, jamal wrote:
>
> Yes in your case you need to hold the lock but not in the e1000 case.
> I dont understand though why you need to check for wake in the tx path.
>
tg3_start_xmit()
if (tx_ring_empty)
<- tg3_tx()
netif_stop_queue()
At the arrow, tg3_tx() can come in and clean up the entire ring but will
not see that the queue is stopped and therefore will not call
netif_wake_queue(). As a result, the tx_queue is stopped forever.
next prev parent reply other threads:[~2006-08-04 0:08 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-03 13:15 [PATCH] [e1000]: Remove unnecessary tx_lock jamal
2006-08-03 14:02 ` Herbert Xu
2006-08-03 14:24 ` jamal
2006-08-03 16:36 ` Brandeburg, Jesse
2006-08-03 18:05 ` Michael Chan
2006-08-03 22:08 ` jamal
2006-08-04 0:09 ` Michael Chan [this message]
2006-08-04 1:10 ` Herbert Xu
2006-08-04 8:37 ` Herbert Xu
2006-08-04 10:10 ` Herbert Xu
2006-08-04 10:16 ` jamal
2006-08-04 10:25 ` Herbert Xu
2006-08-04 10:45 ` jamal
2006-08-05 23:04 ` jamal
2006-08-05 23:06 ` Herbert Xu
2006-08-05 23:21 ` jamal
2006-08-05 23:30 ` Herbert Xu
2006-08-05 16:45 ` jamal
2006-08-04 17:12 ` Stephen Hemminger
2006-08-04 17:28 ` Michael Chan
2006-08-04 18:08 ` Stephen Hemminger
2006-08-04 23:31 ` David Miller
2006-08-05 16:56 ` jamal
2006-08-05 23:05 ` Herbert Xu
2006-08-05 23:17 ` jamal
2006-08-05 23:19 ` Herbert Xu
2006-08-05 23:36 ` jamal
2006-08-06 2:51 ` Herbert Xu
2006-08-06 7:14 ` Edgar E. Iglesias
2006-08-06 7:24 ` Herbert Xu
2006-08-06 7:30 ` Edgar E. Iglesias
2006-08-06 7:26 ` David Miller
2006-08-06 7:36 ` Herbert Xu
2006-08-06 8:06 ` Edgar E. Iglesias
2006-08-06 8:27 ` Herbert Xu
2006-08-06 9:03 ` Edgar E. Iglesias
2006-08-06 9:10 ` Herbert Xu
2006-08-06 9:18 ` Edgar E. Iglesias
2006-08-06 8:35 ` David Miller
2006-08-06 12:24 ` jamal
2006-08-06 12:33 ` jamal
2006-08-06 23:16 ` Jesse Brandeburg
2006-08-07 12:50 ` jamal
2006-08-07 15:21 ` Edgar E. Iglesias
2006-08-07 15:40 ` jamal
2006-08-07 15:59 ` Edgar E. Iglesias
2006-08-07 16:31 ` Jamal Hadi Salim
2006-08-07 17:04 ` Edgar E. Iglesias
2006-08-07 18:00 ` jamal
2006-08-07 18:47 ` Edgar E. Iglesias
2006-08-07 19:03 ` jamal
2006-08-07 19:14 ` Edgar E. Iglesias
2006-08-07 19:34 ` jamal
2006-08-07 20:28 ` Edgar E. Iglesias
2006-08-08 0:52 ` jamal
2006-08-07 20:53 ` Brandeburg, Jesse
2006-08-08 1:07 ` jamal
2006-08-07 23:23 ` Herbert Xu
2006-08-07 23:35 ` Brandeburg, Jesse
2006-08-07 23:40 ` Herbert Xu
2006-08-07 16:29 ` Edgar E. Iglesias
2006-08-07 16:36 ` jamal
2006-08-06 19:22 ` jamal
2006-08-08 1:19 ` jamal
2006-08-08 1:22 ` Herbert Xu
2006-08-08 1:33 ` jamal
2006-08-08 2:17 ` Herbert Xu
2006-08-08 3:10 ` jamal
2006-08-08 12:21 ` jamal
2006-08-08 12:39 ` Herbert Xu
2006-08-06 17:20 ` Michael Chan
2006-08-06 23:04 ` Herbert Xu
2006-08-07 3:56 ` Michael Chan
2006-08-07 4:21 ` Herbert Xu
2006-08-08 17:04 ` Benjamin LaHaise
2006-08-08 22:06 ` David Miller
2006-08-08 23:21 ` Benjamin LaHaise
2006-08-09 0:25 ` Herbert Xu
2006-08-09 1:25 ` Benjamin LaHaise
2006-08-04 1:16 ` jamal
2006-08-04 1:18 ` Herbert Xu
2006-08-04 1:25 ` jamal
2006-08-04 4:06 ` Michael Chan
2006-08-03 22:06 ` jamal
-- strict thread matches above, loose matches on Subject: below --
2006-08-08 5:43 Brandeburg, Jesse
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