From: Daniel Mack <daniel@caiaq.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Pedro Ribeiro <pedrib@gmail.com>,
Robert Hancock <hancockrwd@gmail.com>,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
Greg KH <gregkh@suse.de>,
alsa-devel@alsa-project.org, linux-usb@vger.kernel.org
Subject: Re: USB transfer_buffer allocations on 64bit systems
Date: Fri, 9 Apr 2010 20:09:42 +0200 [thread overview]
Message-ID: <20100409180942.GK30801@buzzloop.caiaq.de> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1004091155570.1852-100000@iolanthe.rowland.org>
On Fri, Apr 09, 2010 at 12:01:27PM -0400, Alan Stern wrote:
> On Fri, 9 Apr 2010, Pedro Ribeiro wrote:
> > here is the output of the patch you sent me when the interference is triggered.
> >
> > The log is long, 1.3mb in size.
>
> I don't see anything suspicious. The transfer_buffer addresses repeat
> every 32 URBs, and the DMA addresses cycle almost entirely uniformly
> from 0x20000000 to 0x23ffffff in units of 0x2000 (there are a few gaps
> where the interval is a little bigger).
The DMA pointers do indeed look sane. I wanted to take a deeper look at
this and set up a 64bit system today. However, I fail to see the problem
here. Pedro, how much RAM does your machine have installed?
Daniel
next prev parent reply other threads:[~2010-04-09 18:09 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-07 9:06 USB transfer_buffer allocations on 64bit systems Daniel Mack
[not found] ` <p2g581ef6d61004070220z1153d40ez955b356e01220848@mail.gmail.com>
2010-04-07 9:26 ` USB HID gadget driver (was: Re: USB transfer_buffer allocations on 64bit systems) Daniel Mack
2010-04-07 14:59 ` USB transfer_buffer allocations on 64bit systems Alan Stern
2010-04-07 15:11 ` Daniel Mack
2010-04-07 15:31 ` Greg KH
2010-04-07 15:35 ` Daniel Mack
2010-04-07 15:51 ` Greg KH
[not found] ` <20100407155122.GA13974-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2010-04-07 16:04 ` Alan Stern
2010-04-08 6:09 ` Oliver Neukum
[not found] ` <201004080809.11756.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-08 11:07 ` Daniel Mack
2010-04-07 15:55 ` Alan Stern
2010-04-07 16:16 ` Daniel Mack
2010-04-07 16:47 ` Alan Stern
2010-04-07 17:55 ` Takashi Iwai
2010-04-07 17:59 ` Daniel Mack
2010-04-07 18:06 ` Takashi Iwai
2010-04-07 19:13 ` Alan Stern
2010-04-08 0:33 ` Greg KH
2010-04-09 0:01 ` Robert Hancock
[not found] ` <4BBE6E57.6020600-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-04-09 16:50 ` Sarah Sharp
2010-04-09 23:38 ` Robert Hancock
2010-04-10 8:34 ` Daniel Mack
2010-04-10 17:02 ` [alsa-devel] " Robert Hancock
2010-04-12 18:56 ` Sarah Sharp
2010-04-12 20:39 ` Robert Hancock
2010-04-12 20:58 ` Sarah Sharp
[not found] ` <Pine.LNX.4.44L0.1004071452560.5760-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-07 23:59 ` Robert Hancock
2010-04-12 11:17 ` [PATCH] USB: rename usb_buffer_alloc() and usb_buffer_free() Daniel Mack
[not found] ` <1271071045-3112-1-git-send-email-daniel-rDUAYElUppE@public.gmane.org>
2010-04-13 18:16 ` Daniel Mack
[not found] ` <20100413181631.GT30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-13 19:27 ` Alan Stern
2010-04-13 20:26 ` Greg KH
2010-04-13 21:47 ` Daniel Mack
2010-04-07 17:52 ` USB transfer_buffer allocations on 64bit systems Takashi Iwai
2010-04-07 15:46 ` Alan Stern
2010-04-08 6:12 ` Oliver Neukum
[not found] ` <201004080812.04419.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-08 16:59 ` Alan Stern
2010-04-08 21:24 ` Oliver Neukum
2010-04-08 22:20 ` Alan Stern
2010-04-09 6:04 ` Oliver Neukum
[not found] ` <201004090804.36213.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-09 14:41 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004091033150.1852-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-09 14:50 ` Oliver Neukum
[not found] ` <201004091650.31488.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-09 15:15 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004091114500.1852-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-09 20:51 ` Oliver Neukum
2010-04-09 21:21 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004071036060.1779-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-07 16:54 ` Oliver Neukum
[not found] ` <201004071854.55530.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-07 17:00 ` Daniel Mack
2010-04-07 23:55 ` Robert Hancock
[not found] ` <4BBD1B6F.3000205-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-04-08 2:10 ` Alan Stern
2010-04-08 7:30 ` Daniel Mack
[not found] ` <20100408073041.GO30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-08 16:57 ` Alan Stern
2010-04-08 17:17 ` Pedro Ribeiro
[not found] ` <Pine.LNX.4.44L0.1004081245330.1720-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-08 23:13 ` Pedro Ribeiro
2010-04-09 16:01 ` Alan Stern
2010-04-09 18:09 ` Daniel Mack [this message]
[not found] ` <20100409180942.GK30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-09 18:19 ` Pedro Ribeiro
[not found] ` <w2r74fd948d1004091119j9f33d8a6kc1824d9243abf38b-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-09 19:34 ` Alan Stern
2010-04-09 20:14 ` Daniel Mack
[not found] ` <Pine.LNX.4.44L0.1004091529240.1852-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-09 20:25 ` [LKML] " Konrad Rzeszutek Wilk
[not found] ` <20100409202533.GA8983-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2010-04-09 21:23 ` Alan Stern
2010-04-09 22:11 ` Robert Hancock
2010-04-12 10:48 ` Daniel Mack
2010-04-12 12:06 ` Pedro Ribeiro
2010-04-10 12:49 ` Daniel Mack
[not found] ` <20100410124912.GP30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-10 13:21 ` Pedro Ribeiro
2010-04-12 8:59 ` Andi Kleen
2010-04-12 11:14 ` Daniel Mack
[not found] ` <20100412111439.GU30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-12 11:53 ` Andi Kleen
2010-04-12 12:11 ` Pedro Ribeiro
[not found] ` <q2z74fd948d1004120511hebf19eaauc41ee9ed25dea19e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-12 12:12 ` Andi Kleen
2010-04-12 12:32 ` Daniel Mack
2010-04-12 12:47 ` Andi Kleen
2010-04-12 12:54 ` Daniel Mack
2010-04-12 15:43 ` Andi Kleen
[not found] ` <20100412154323.GP18855-qrUzlfsMFqo/4alezvVtWx2eb7JE58TQ@public.gmane.org>
2010-04-12 16:17 ` Alan Stern
2010-04-12 16:29 ` Andi Kleen
2010-04-12 16:57 ` Alan Stern
2010-04-12 17:15 ` Daniel Mack
[not found] ` <20100412171507.GB30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-12 17:22 ` Andi Kleen
2010-04-12 17:56 ` Daniel Mack
2010-04-12 17:52 ` [LKML] " Konrad Rzeszutek Wilk
2010-04-13 18:22 ` Daniel Mack
[not found] ` <20100413182233.GR30807-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-13 23:46 ` Pedro Ribeiro
2010-04-14 10:09 ` Daniel Mack
2010-04-14 10:47 ` Pedro Ribeiro
2010-04-14 11:02 ` Pedro Ribeiro
2010-04-14 13:18 ` [LKML] " Konrad Rzeszutek Wilk
[not found] ` <t2w74fd948d1004140347k3447bffapb73856eacddfde55-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-14 14:08 ` Alan Stern
2010-04-14 16:36 ` Daniel Mack
[not found] ` <20100414163637.GV30807-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-14 17:21 ` Pedro Ribeiro
2010-04-15 7:35 ` Daniel Mack
[not found] <g2h74fd948d1004141820ladc1941eo732d059dd678df0a@mail.gmail.com>
[not found] ` <Pine.LNX.4.44L0.1004151114490.1562-100000@iolanthe.rowland.org>
[not found] ` <t2r74fd948d1004191716l49dedc2p25a27da39bcc614a@mail.gmail.com>
2010-05-07 7:48 ` Daniel Mack
2010-05-07 9:47 ` Clemens Ladisch
2010-05-07 10:24 ` Daniel Mack
2010-05-07 14:51 ` [alsa-devel] " Alan Stern
2010-05-10 2:50 ` FUJITA Tomonori
2010-05-10 9:21 ` David Woodhouse
2010-05-07 11:42 ` [alsa-devel] " Oliver Neukum
2010-05-07 11:47 ` Oliver Neukum
2010-05-07 11:58 ` Daniel Mack
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100409180942.GK30801@buzzloop.caiaq.de \
--to=daniel@caiaq.de \
--cc=akpm@linux-foundation.org \
--cc=alsa-devel@alsa-project.org \
--cc=gregkh@suse.de \
--cc=hancockrwd@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=pedrib@gmail.com \
--cc=stern@rowland.harvard.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).