Re: [RFC PATCH 1/2 v2] Unified trace buffer

From: Steven Rostedt
Date: Thu Sep 25 2008 - 13:48:43 EST



On Thu, 25 Sep 2008, Mathieu Desnoyers wrote:
>
> Is there a reason to use delta between events rather than simply write
> the 27 LSBs that I would have missed ?

One answer is that your counter wrap problem is extended.

That is, you have 27 bits of time between each event to not worry about
wraps. But if you go against the page itself, the last event on that page
is more likely to suffer.

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