[ltt-dev] lttng development plan

[KOSAKI Motohiro]

> Mathieu Desnoyers wrote:
> > * Lai Jiangshan (laijs at cn.fujitsu.com) wrote:
> >> Mathieu Desnoyers wrote:
> >>> Hi Gui,
> >>>
> >>> My short-term roadmap is (those are the show stoppers) :
> >>>
> >>> - Get lttng ascii dump to work.
> >>>   - create periodical buffer flush per-cpu timer for data streaming
> >>>   - Modify LTTng/lttd/lttv to support variable-sized buffers, so we
> >>>     don't have to copy the padding. This implies creating an index in
> >>>     lttv when opening the trace to know where the subbuffer start is.
> >>>   - Waiting for Lai's channel and event ID management modifications
> >>>     following my comments. This is needed so the IDs stays valid for the
> >>>     binary->ascii in-kernel converter.
> >>> - Support dynamic frequency scaling on x86.
> >>>
> >>> Other nice-to-have, but not a priority :
> >>>
> >>>   - Add support for Performance Monitoring Counters (PMC) so they can be
> >>>     dumped in the traces.
> >>>   - Put back support for kernel and userspace stack dump so it can be
> >>>     connected to any given tracepoint.
> >>>   - Linux ABI for fast userspace tracing.
> >>>     - Then, add NPTL instrumentation (mutexes, phtreads).
> >>>   - Integrate LTTng with LKCD, test with kernel crash extraction,
> >>>     create tools to simplify extraction of traces from crashed kernel,
> >>>     integrate those tools to ltt-control.
> >> We will implement it.
> >>
> > 
> > Great :) Note that there has already been some work done on this. This
> > in available as an addition to the crosscrash tool :
> > 
> > http://sourceforge.net/projects/crosscrash/
> > 
> > There is a cross-crash-ltt.patch file available on the project website,
> > but I think it has not been updated since 2007. Some integration work
> > will have to be done.
> > 
> > Also outputting the traces in the video card's memory would be a
> > nice-to-have, because this memory often survives hot reboots.
> 
> I will use kdump. kdump is in the mainline, I think kdump is better
> than crosscrash & LKCD.

Yup, LKCD was perfectly gone. 
please ignore LKCD.