[Ksummit-discuss] Self nomination
Greg KH
greg at kroah.com
Fri Jul 31 18:22:56 UTC 2015
On Fri, Jul 31, 2015 at 02:17:58PM -0400, Dave Jones wrote:
> On Fri, Jul 31, 2015 at 11:12:45AM -0700, Greg Kroah-Hartman wrote:
> > On Fri, Jul 31, 2015 at 12:51:53PM -0500, Bjorn Helgaas wrote:
> > > I prefer that a dmesg collected in the simplest possible way, with no
> > > special config or boot flags, be as useful as possible. So converting
> > > to dynamic debug requires much more thought about which messages
> > > should be always printed and which should become dynamic.
> >
> > Why would a debugging message ever not be dynamic? They are there for
> > you to use, and turn off when you are done. If you want a user to
> > report the output of them, then of course they should be dynamic so they
> > can just write a line to a debugfs file and then start seeing them
>
> This implies a user knows ahead of time what bugs they are going to hit,
> and which messages they need to enable. For hard-to-reproduce bugs,
> or bugs that exhibit non-obvious symptoms, this isn't workable.
Fair enough, but wouldn't those messages be "errors"?
Anyway, this is way off-topic from the original thread, it all comes
down to specifics of the message that is being written and the
surrounding issues of why it would be written.
thanks,
greg k-h
More information about the Ksummit-discuss
mailing list