Re: Hardware Error Kernel Mini-Summit

From: Ingo Molnar
Date: Thu May 20 2010 - 08:37:58 EST

* Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote:

> Ingo Molnar wrote:
> > Regarding dmesg, there's a WIP patch on lkml that
> > integrates printks into this framework as well - makes
> > each printk also available as a special string event.
> >
> > That way a tool can have both programmatic access to
> > printk output (without having to interact with the
> > syslog buffer itself) - together with all the other
> > structured log sources, while humans can also see what
> > is happening.
> Some system admins prefer to have everything on dmesg,
> as they can enable a serial console, and catch the logs
> remotely, even when the machine crashes for example due
> to a hardware failure.
> So, IMHO, one feature that the perf event needs is the
> capability to report errors via a serial console also,
> or a mechanism where some events are sent via dmesg.

Yeah. That can be an aspect of the callback - or might
even be integrated into the core code.


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