Re: Early kernel messages are overflowing the static log buffer

[Ingo Molnar <mingo@elte.hu>]

* Mike Travis <travis@sgi.com> wrote:

> Thanks.
> 
> I have a patchset almost ready for submission.  We have a giant
> system (6 racks with some huge amount of nodes) for a few more
> days, and the buffer still overflowed with my changes.  So I'm
> making one more tweak to cut down the amount of characters generated
> without losing information.

Also feel free to make judgement calls to cut information - people _think_ they need 
all that boot time noise but it's rarely useful. Memory layout is - but a lot of 
other details are not. So dont try to preserve things at any cost.

> This doesn't really help the log buffer overflow problem as KERN_DEBUG
> messages still end up in the buffer.  The pr_debug() macro does compile
> out the messages if the system does not have KERNEL debug set, though
> distros also have this set as a default.

Make the whole printout dependent on a percpu-debug boot parameter? (and default the 
switch to off?)

Thanks,

	Ingo