From: Andi Kleen <andi@firstfloor.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Andi Kleen <andi@firstfloor.org>, Daniel Mack <daniel@caiaq.de>,
Pedro Ribeiro <pedrib@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: Mon, 12 Apr 2010 18:29:47 +0200 [thread overview]
Message-ID: <20100412162947.GQ18855@one.firstfloor.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1004121214460.1702-100000@iolanthe.rowland.org>
On Mon, Apr 12, 2010 at 12:17:22PM -0400, Alan Stern wrote:
> On Mon, 12 Apr 2010, Andi Kleen wrote:
>
> > > Well, the sound driver itself doesn't care for any of those things, just
> > > like any other USB driver doesn't. The USB core itself of the host
> > > controller driver should do, and as far as I can see, it does that, yes.
> >
> > Hmm, still things must go wrong somewhere. Perhaps need some instrumentation
> > to see if all the transfer buffers really hit the PCI mapping functions.
>
> Such a test has already been carried out earlier in this thread:
>
> http://marc.info/?l=linux-usb&m=127074587029353&w=2
> http://marc.info/?l=linux-usb&m=127076841801051&w=2
> http://marc.info/?l=linux-usb&m=127082890510415&w=2
Hmm, thanks. But things must still go wrong somewhere, otherwise
the GFP_DMA32 wouldn't be needed?
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-04-12 16:29 UTC|newest]
Thread overview: 221+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-07 9:06 USB transfer_buffer allocations on 64bit systems Daniel Mack
2010-04-07 9:06 ` 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 9:26 ` Daniel Mack
2010-04-07 14:59 ` USB transfer_buffer allocations on 64bit systems Alan Stern
2010-04-07 14:59 ` Alan Stern
2010-04-07 15:11 ` Daniel Mack
2010-04-07 15:11 ` Daniel Mack
2010-04-07 15:31 ` Greg KH
2010-04-07 15:31 ` Greg KH
2010-04-07 15:35 ` Daniel Mack
2010-04-07 15:35 ` Daniel Mack
2010-04-07 15:51 ` Greg KH
2010-04-07 15:51 ` Greg KH
[not found] ` <20100407155122.GA13974-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2010-04-07 16:04 ` Alan Stern
2010-04-07 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
2010-04-08 11:07 ` Daniel Mack
2010-04-07 15:55 ` Alan Stern
2010-04-07 15:55 ` Alan Stern
2010-04-07 16:16 ` Daniel Mack
2010-04-07 16:16 ` Daniel Mack
2010-04-07 16:47 ` Alan Stern
2010-04-07 16:47 ` Alan Stern
2010-04-07 17:55 ` Takashi Iwai
2010-04-07 17:55 ` Takashi Iwai
2010-04-07 17:59 ` Daniel Mack
2010-04-07 17:59 ` Daniel Mack
2010-04-07 18:06 ` Takashi Iwai
2010-04-07 18:06 ` Takashi Iwai
2010-04-07 19:13 ` Alan Stern
2010-04-07 19:13 ` Alan Stern
2010-04-08 0:33 ` Greg KH
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 16:50 ` Sarah Sharp
2010-04-09 23:38 ` Robert Hancock
2010-04-09 23:38 ` Robert Hancock
2010-04-10 8:34 ` Daniel Mack
2010-04-10 8:34 ` [alsa-devel] " Daniel Mack
2010-04-10 17:02 ` Robert Hancock
2010-04-12 18:56 ` Sarah Sharp
2010-04-12 20:39 ` Robert Hancock
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
2010-04-07 23:59 ` Robert Hancock
2010-04-12 11:17 ` [PATCH] USB: rename usb_buffer_alloc() and usb_buffer_free() Daniel Mack
2010-04-12 11:17 ` Daniel Mack
[not found] ` <1271071045-3112-1-git-send-email-daniel-rDUAYElUppE@public.gmane.org>
2010-04-13 18:16 ` Daniel Mack
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 19:27 ` Alan Stern
2010-04-13 20:26 ` Greg KH
2010-04-13 21:47 ` Daniel Mack
2010-04-13 21:47 ` Daniel Mack
2010-04-07 17:52 ` USB transfer_buffer allocations on 64bit systems Takashi Iwai
2010-04-07 17:52 ` Takashi Iwai
2010-04-07 15:46 ` Alan Stern
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 16:59 ` Alan Stern
2010-04-08 21:24 ` Oliver Neukum
2010-04-08 22:20 ` Alan Stern
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
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
2010-04-09 14:50 ` Oliver Neukum
[not found] ` <201004091650.31488.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-09 15:15 ` Alan Stern
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 20:51 ` Oliver Neukum
2010-04-09 21:21 ` Alan Stern
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
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 17:00 ` Daniel Mack
2010-04-07 23:55 ` Robert Hancock
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 2:10 ` Alan Stern
2010-04-08 7:30 ` Daniel Mack
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 16:57 ` Alan Stern
2010-04-08 17:17 ` Pedro Ribeiro
2010-04-08 18:17 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004081245330.1720-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-08 23:13 ` Pedro Ribeiro
2010-04-08 23:13 ` Pedro Ribeiro
2010-04-09 16:01 ` Alan Stern
2010-04-09 16:01 ` Alan Stern
2010-04-09 18:09 ` Daniel Mack
[not found] ` <20100409180942.GK30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-09 18:19 ` Pedro Ribeiro
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 19:34 ` Alan Stern
2010-04-09 20:14 ` Daniel Mack
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
2010-04-09 20:25 ` Konrad Rzeszutek Wilk
[not found] ` <20100409202533.GA8983-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2010-04-09 21:23 ` Alan Stern
2010-04-09 21:23 ` Alan Stern
2010-04-09 22:11 ` Robert Hancock
2010-04-12 10:48 ` Daniel Mack
2010-04-12 10:48 ` Daniel Mack
2010-04-12 12:06 ` Pedro Ribeiro
2010-04-10 12:49 ` Daniel Mack
2010-04-10 12:49 ` Daniel Mack
[not found] ` <20100410124912.GP30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-10 13:21 ` Pedro Ribeiro
2010-04-10 13:21 ` Pedro Ribeiro
2010-04-12 8:59 ` Andi Kleen
2010-04-12 8:59 ` Andi Kleen
2010-04-12 11:14 ` Daniel Mack
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 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 12:12 ` 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 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 16:17 ` Alan Stern
2010-04-12 16:29 ` Andi Kleen [this message]
2010-04-12 16:57 ` Alan Stern
2010-04-12 16:57 ` Alan Stern
2010-04-12 17:15 ` Daniel Mack
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 17:22 ` Andi Kleen
2010-04-12 17:56 ` Daniel Mack
2010-04-12 17:56 ` Daniel Mack
2010-04-12 17:52 ` [LKML] " Konrad Rzeszutek Wilk
2010-04-12 17:52 ` Konrad Rzeszutek Wilk
2010-04-13 18:22 ` Daniel Mack
2010-04-13 18:22 ` Daniel Mack
[not found] ` <20100413182233.GR30807-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-13 23:46 ` Pedro Ribeiro
2010-04-13 23:46 ` Pedro Ribeiro
2010-04-14 10:09 ` Daniel Mack
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 14:08 ` Alan Stern
2010-04-14 16:36 ` Daniel Mack
2010-04-14 16:36 ` Daniel Mack
[not found] ` <20100414163637.GV30807-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-14 17:21 ` Pedro Ribeiro
2010-04-14 17:21 ` Pedro Ribeiro
2010-04-14 18:23 ` Alan Stern
2010-04-14 18:27 ` Pedro Ribeiro
2010-04-14 18:53 ` Alan Stern
2010-04-15 7:35 ` Daniel Mack
2010-04-15 7:35 ` Daniel Mack
2010-04-14 18:15 ` Alan Stern
2010-04-14 18:36 ` David Woodhouse
2010-04-14 21:12 ` Pedro Ribeiro
2010-04-14 22:25 ` Chris Wright
2010-04-14 22:56 ` Pedro Ribeiro
2010-04-14 23:37 ` Chris Wright
2010-04-15 1:20 ` Pedro Ribeiro
2010-04-15 15:20 ` Alan Stern
2010-04-20 0:16 ` Pedro Ribeiro
2010-05-07 7:48 ` Daniel Mack
2010-05-07 7:48 ` Daniel Mack
2010-05-07 9:47 ` Clemens Ladisch
2010-05-07 9:47 ` [alsa-devel] " Clemens Ladisch
2010-05-07 10:24 ` Daniel Mack
2010-05-07 10:24 ` [alsa-devel] " Daniel Mack
2010-05-07 14:51 ` Alan Stern
2010-05-07 14:51 ` Alan Stern
2010-05-10 2:50 ` FUJITA Tomonori
2010-05-10 9:21 ` David Woodhouse
2010-05-10 9:21 ` [alsa-devel] " David Woodhouse
[not found] ` <1273483265.372.3383.camel-uXGAPMMVk8bAQYKIod7YupZV94DADvEd@public.gmane.org>
2010-05-10 14:58 ` Alan Stern
2010-05-10 14:58 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1005101049100.1626-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-05-11 1:06 ` FUJITA Tomonori
2010-05-11 1:06 ` FUJITA Tomonori
[not found] ` <20100511100637D.fujita.tomonori-Zyj7fXuS5i5L9jVzuh4AOg@public.gmane.org>
2010-05-11 14:00 ` Alan Stern
2010-05-11 14:00 ` Alan Stern
2010-05-11 14:22 ` FUJITA Tomonori
2010-05-11 14:24 ` Konrad Rzeszutek Wilk
2010-05-11 14:38 ` FUJITA Tomonori
2010-05-11 15:04 ` Alan Stern
2010-05-11 15:04 ` Alan Stern
2010-05-11 15:34 ` FUJITA Tomonori
2010-05-11 16:06 ` Alan Stern
2010-05-11 16:09 ` Daniel Mack
2010-05-11 16:48 ` Pedro Ribeiro
2010-05-11 17:10 ` Daniel Mack
2010-05-11 17:32 ` Pedro Ribeiro
2010-05-11 17:38 ` Daniel Mack
2010-05-12 23:50 ` Pedro Ribeiro
2010-05-13 9:36 ` Daniel Mack
2010-05-14 0:17 ` Pedro Ribeiro
2010-05-11 14:57 ` Alan Stern
2010-05-11 15:05 ` Daniel Mack
[not found] ` <20100507102408.GM30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-05-10 14:31 ` Konrad Rzeszutek Wilk
2010-05-10 14:31 ` Konrad Rzeszutek Wilk
[not found] ` <4BE3E1B9.5020602-P6GI/4k7KOmELgA04lAiVw@public.gmane.org>
2010-05-07 11:42 ` Oliver Neukum
2010-05-07 11:42 ` Oliver Neukum
[not found] ` <201005071342.34923.oneukum-l3A5Bk7waGM@public.gmane.org>
2010-05-07 11:47 ` Oliver Neukum
2010-05-07 11:47 ` Oliver Neukum
2010-05-07 11:58 ` Daniel Mack
2010-05-07 11:58 ` [alsa-devel] " Daniel Mack
[not found] ` <20100507115810.GN30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-05-07 14:45 ` Alan Stern
2010-05-07 14:45 ` Alan Stern
2010-04-14 18:38 ` Chris Wright
2010-04-14 20:29 ` Alan Stern
2010-04-14 21:01 ` Konrad Rzeszutek Wilk
2010-04-14 21:12 ` Pedro Ribeiro
2010-04-15 1:50 ` Alan Stern
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