Re: [RFC/Requirements/Design] h/w error reporting

From: Ingo Molnar
Date: Wed Nov 10 2010 - 13:28:21 EST



* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Wed, 2010-11-10 at 18:48 +0100, Ingo Molnar wrote:
>
> > Yep. The obvious direction is to extend the event buffering ABI we already have,
> > with whatever additions that are needed:
> >
> > - document that we already support flight recorder mode
>
> I thought this was still broken?

Please document that as well.

> > - a more compressed record format
> >
> > - NOP filler events up to page boundary, for better splice and for better flight
> > recorder
> >
> > - splice support
> >
> > etc. That's how it evolved until now and it's all very extensible.
> >
> > Steve, could you please list the additions you have in mind, in order of priority?
>
> A few of things that pop up quickly are:
>
> 1) lockless
>
> 2) as-fast-as possible
>
> 3) support all tasks / all CPUs and still have as-fast-as-possible

Yeah - that's a self-evident goal for just about any kernel code.

Ingo
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