[lttng-dev] [PATCH lttng-modules] Update kernel probes to more detailed match to kernel versions

[Mathieu Desnoyers]

* Gabbasov, Andrew (Andrew_Gabbasov at mentor.com) wrote:
> Hi Mathieu,
> 
> > > By the way, we're planning to go for a 2.1 release in a matter of days.
> > > At that point, I'll have to decide if we keep the recent instrumentation
> > > commits introduced after the start of the -rc cycle in this release (if
> > > mature enough), or if we should branch before those for the 2.1 release
> > > if they need more testing (and keep these instrumentation extensions for
> > > 2.2). Any thoughts on this ?
> >
> > I believe, it would be desirable to make more thorough testing of new
> > instrumentations. On our side the testing was not too extensive, and was
> > done for ARM platform only. Although the probes are mostly replicating
> > the kernel's tracepoints, it would be reasonable to keep the commits
> > in a branch for some time so that more people in the community could
> > make some testing.
> 
> The other team here at Mentor Graphics, that originally created this set of
> tracepoints instrumentation, submitted them to the list quite long ago.
> Also, they actually did an extensive testing (much more than I was aware of),
> including other platforms (e.g. PowerPC).
> 
> May be it's not too late to still include at least the original implementation
> of tracepoints (may be with some later fixes) to upcoming 2.1 release?
> Having new supported fixed kernel tracepoints could be a good accomplishment
> for the release.

I understand, but since we want to release this week, and until recently
we still had to fix issues with compiling with older kernels, and
runtime issues when activating lockdep tracing, I think it would be
safer to let this extra instrumentation wait for 2.2.

Thanks,

Mathieu

> 
> Thanks.
> 
> Best regards,
> Andrew Gabbasov
> 

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com