lkml.org 
[lkml]   [2007]   [May]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.6.20 libata cdrom
Tejun Heo wrote:
> Mark Lord wrote:
>> And this is the second one today where it would be very useful
>> to see a tf dump. It's time to add one to that code patch, methinks.
>
> Yeah, we have all these fancy ata_msg_() thingies which can be used to
> provide a lot of debugging info without affecting hot path. We're just
> too lazy to actually use it. :-( Putting it on my ever growing to-do list.

The thing about failures is, we're lucky enough to ever see even a single
end-user error log. So when we do get the *one* error log from grandma,
it had better contain sufficient info for us to at least guess at the
solution, because grandma has gone back to OS/X in the meanwhile. ;)

It's a good thing that failure paths are not normally "hot".
We can load those up with a little extra info, so long as they
cannot normally be trigged from userspace to generate a Denial-Of-Service
style of attack.

I think libata drive probing is a pretty safe area to show lots
of information (by default) when something goes wrong.

Cheers!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-05-01 15:45    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site