Thread (45 messages) 45 messages, 9 authors, 2010-07-02

Re: [PATCH 12/12] usb: use IRQ watching

From: Tejun Heo <tj@kernel.org>
Date: 2010-06-14 22:20:32
Also in: lkml

cc'ing Kay, hi.

On 06/14/2010 11:52 PM, Tejun Heo wrote:
Hello,

On 06/14/2010 11:41 PM, Greg KH wrote:
quoted
So if there's a routing problem, it turns into a polled interrupt?  Do
we really want that?
Oh yeah, I really want that for libata.  Routing is only part of the
problem and flaky IRQ is something we have to learn to cope with.
quoted
I wonder how long people will run without realizing that there are
problems with their system if their devices still work.
I think things would be better this way.  If the drives (both cd and
hard) / input devices are not accessible, most people would simply
give up rather than reporting, and many cases are transient problems
which happen only once in the blue moon.

It would be great if some kind of automatic reporting can be used
(similar to kerneloops?).  Hmm... maybe make the warnings scarier?
Hmm... maybe what we can do is generating an uevent when an IRQ is
confirmed to be bad and then let udev notify the user.  That way we'll
probably have better chance of getting bug reports and users have
whiny but working system.

Thanks.

-- 
tejun
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