On Fri, 20 Mar 2009 18:41:40 -0700 (PDT) Roland McGrath
wrote:
> This adds the utrace facility, a new modular interface in the kernel for
> implementing user thread tracing and debugging. This fits on top of the
> tracehook_* layer, so the new code is well-isolated.
>
> The new interface is in
Tracing does not mean only debug. Some tracing facilities can be used for
virtualization.
For example User-Mode Linux is based on ptrace.
I have a prototype of kernel module for virtualization (kmview) based on utrace.
Using kmview (module+VMM) it is possible for a user (not root) to mount a
fil
* Renzo Davoli wrote:
> Tracing does not mean only debug. Some tracing facilities can be
> used for virtualization. For example User-Mode Linux is based on
> ptrace.
>
> I have a prototype of kernel module for virtualization (kmview)
> based on utrace. [...]
Hm, i cannot find the source cod
On Sat, Mar 21, 2009 at 03:34:57PM +0100, Ingo Molnar wrote:
>
> * Renzo Davoli wrote:
>
> > Tracing does not mean only debug. Some tracing facilities can be
> > used for virtualization. For example User-Mode Linux is based on
> > ptrace.
> >
> > I have a prototype of kernel module for virtua
* Renzo Davoli wrote:
> On Sat, Mar 21, 2009 at 03:34:57PM +0100, Ingo Molnar wrote:
> >
> > * Renzo Davoli wrote:
> >
> > > Tracing does not mean only debug. Some tracing facilities can be
> > > used for virtualization. For example User-Mode Linux is based on
> > > ptrace.
> > >
> > > I h
> That's btw. what i see as the biggest value of utrace: it's a
> comprehesive, all-encompassing framework all around process state
> events and process state manipulation.
Me too!
And while we're on the btw's, I want to let everyone know that Ingo is the
one who came up with the name "utrace
> I'd be interested in seeing a bit of discussion regarding the overall value
> of utrace - it has been quite a while since it floated past.
Me too!
> I assume that redoing ptrace to be a client of utrace _will_ happen, and
> that this is merely a cleanup exercise with no new user-visible feature
On Sat, Mar 21, 2009 at 8:49 AM, Andrew Morton
wrote:
> On Fri, 20 Mar 2009 18:41:40 -0700 (PDT) Roland McGrath
> wrote:
>
>> This adds the utrace facility, a new modular interface in the kernel for
>> implementing user thread tracing and debugging. This fits on top of the
>> tracehook_* layer,
