Re: [PATCH] Linux Kernel Markers 0.5 for Linux 2.6.17 (with probe management)

Ingo Molnar
2006-09-22T06:59:30Z

* Mathieu Desnoyers <compudj@krystal.dyndns.org> wrote:

> > "As an example, LTTng traces the page fault handler, when kprobes
> > just can't instrument it."
> >
> > but tracing a raw pagefault at the arch level is a bad idea anyway,
> > we want to trace __handle_mm_fault(). That way you can avoid having
> > to modify every architecture's pagefault handler ...
>
> Then you lose the ability to trace in-kernel minor page faults.

that's wrong, minor pagefaults go through __handle_mm_fault() just as
much.

Ingo