Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracepoint for x86 & x86_64

Jiri Olsa
2010-11-11T13:17:05Z

On Thu, Nov 11, 2010 at 07:51:57AM -0500, Christoph Hellwig wrote:
> Can you explain again who this is supposed to be used? It's missing
> a lot of essential information about the page fault, but on the other
> hand traces totally useless information like the task struct pointer.
>
> What's your motivation for posting this given that you obviously
> haven't actually tried to use it in practice?
yep, kind of doing this for Larry... hoping he'd fill in to the
discussion ;)

>
> Btw, this doesn't mean I'm against a page faul trace point - quite
> contrary. It just seems you're not actually pushing something that's
> been tested in real life or is generally useful.
What would be your idea of the page fault tracepoint?

thanks,
jirka