From: Helge Hafting <helgehaf@aitel.hist.no>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg KH <greg@kroah.com>, Paul Fulghum <paulkf@microgate.com>,
Andrew Morton <akpm@digeo.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
johannes@erdfelt.com
Subject: Re: 2.5.69 Interrupt Latency
Date: Tue, 13 May 2003 23:48:30 +0200 [thread overview]
Message-ID: <20030513214830.GA685@hh.idb.hist.no> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0305131719260.673-100000@ida.rowland.org>
On Tue, May 13, 2003 at 05:35:47PM -0400, Alan Stern wrote:
> My take is that wakeup_hc() is getting called whenever some stray signal
> causes the device to generate an interrupt, and then a little while later
> the stall timer routine calls suspend_hc() since nothing is active. The
> interrupts are probably indistinguishable from what you would get if a new
> device really had just been attached to the bus.
>
Could this also happen if the USB interrupt is shared?
The other device interrupts, and the kernel calls into
usb interrupt routine just in case USB has some data too?
Helge Hafting
next prev parent reply other threads:[~2003-05-13 21:38 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-07 16:12 2.5.69 Interrupt Latency Paul Fulghum
2003-05-07 19:41 ` Paul Fulghum
2003-05-07 22:28 ` Andrew Morton
2003-05-08 0:25 ` Paul Fulghum
2003-05-08 13:56 ` Paul Fulghum
2003-05-08 19:22 ` Andrew Morton
2003-05-08 19:35 ` Paul Fulghum
2003-05-08 23:20 ` Brian Gerst
2003-05-09 18:12 ` Paul Fulghum
2003-05-09 20:30 ` Paul Fulghum
2003-05-09 21:28 ` Andrew Morton
2003-05-12 13:57 ` Paul Fulghum
2003-05-12 14:06 ` Paul Fulghum
2003-05-12 16:24 ` Greg KH
2003-05-12 17:08 ` Paul Fulghum
2003-05-12 17:30 ` Greg KH
2003-05-12 17:49 ` Paul Fulghum
2003-05-12 18:01 ` Greg KH
2003-05-12 18:15 ` Paul Fulghum
2003-05-13 15:26 ` Alan Stern
2003-05-13 15:35 ` Paul Fulghum
2003-05-13 17:30 ` Greg KH
2003-05-13 13:01 ` Paul Fulghum
2003-05-13 18:09 ` Greg KH
2003-05-13 18:11 ` Greg KH
2003-05-13 21:35 ` Alan Stern
2003-05-13 21:48 ` Helge Hafting [this message]
2003-05-13 22:09 ` Alan Stern
2003-05-14 21:06 ` Paul Fulghum
2003-05-14 21:15 ` Johannes Erdfelt
2003-05-14 21:30 ` Greg KH
2003-05-14 21:45 ` Paul Fulghum
2003-05-13 20:17 ` Bill Davidsen
2003-05-13 22:39 ` Paul Fulghum
2003-05-14 20:52 ` Test Patch: " Alan Stern
2003-05-15 13:45 ` Paul Fulghum
2003-05-15 14:12 ` Paul Fulghum
2003-05-15 21:07 ` Alan Stern
2003-05-15 15:26 ` Paul Fulghum
2003-05-15 18:11 ` Alan Stern
2003-05-15 18:40 ` Paul Fulghum
2003-05-15 19:42 ` Paul Fulghum
2003-05-15 19:59 ` Paul Fulghum
2003-05-15 21:13 ` Alan Stern
2003-05-15 21:30 ` Paul Fulghum
2003-05-15 19:17 ` Paul Fulghum
2003-05-16 15:33 ` Alan Stern
2003-05-16 15:58 ` Paul Fulghum
2003-05-16 16:18 ` Paul Fulghum
2003-05-16 17:16 ` Alan Stern
2003-05-16 17:48 ` Paul Fulghum
2003-05-16 18:31 ` Paul Fulghum
2003-05-16 18:40 ` Alan Stern
2003-05-16 19:05 ` Paul Fulghum
2003-05-18 0:57 ` Andrew McGregor
2003-05-16 17:20 ` Alan Stern
2003-05-16 17:51 ` Paul Fulghum
2003-05-19 16:41 ` Alan Stern
2003-05-19 18:20 ` Paul Fulghum
2003-05-19 18:49 ` Alan Stern
2003-05-16 18:10 ` Paul Fulghum
2003-05-14 17:50 ` Paul Fulghum
2003-05-09 21:07 ` Andrew Morton
2003-05-09 21:28 ` Paul Fulghum
2003-05-08 14:47 ` Paul Fulghum
[not found] <20030507162013$0b67@gated-at.bofh.it>
[not found] ` <20030507195008$71e6@gated-at.bofh.it>
[not found] ` <20030507224009$4228@gated-at.bofh.it>
[not found] ` <20030508140022$2498@gated-at.bofh.it>
[not found] ` <20030508193016$1083@gated-at.bofh.it>
[not found] ` <20030509182012$49f0@gated-at.bofh.it>
[not found] ` <20030509204010$3c9b@gated-at.bofh.it>
2003-05-09 21:06 ` Arnd Bergmann
2003-05-09 21:25 ` Paul Fulghum
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