Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108

Ingo Molnar
2006-09-17T14:08:33Z

* Frederik Deweerdt <deweerdt@free.fr> wrote:

> On Sat, Sep 16, 2006 at 09:37:45PM +0200, Ingo Molnar wrote:
> > --------------->
> > Subject: [patch] kprobes: speed INT3 trap handling up on i386
> > From: Ingo Molnar <mingo@elte.hu>
> >
> > speed up kprobes trap handling by special-casing kernel-space
> > INT3 traps (which do not occur otherwise) and doing a kprobes
> > handler check - instead of redirecting over the i386-die-notifier
> > chain.
> >
> Hi Ingo,
>
> Not that it would make any difference to the actual kprobe
> performance, but I think that not using the die-notifier chain makes
> the DIE_INT3 handling in kprobe_exceptions_notify() useless.

yeah, indeed - i'll add your patch to the kprobes patchset.

Ingo