Instead of posting yet another stream of individual patches from my queue, I decided to put them all into a series and upload them. See
http://www.rts.uni-hannover.de/rtaddon/patches
for my latest I-pipe, Xenomai, and LTTng enhancements and fixes. Here is
a short overview of the content:
/ipipe-kernel
-------------
ipipe-janitorial.patch
Removes (now) useless hunks from the I-pipe patch, specifically over
i386.
disable-context-check-v2.patch
disable-context-check-v2-i386.patch
Infrastructure for temporarily or permanently disabling the context
checker. Applies this on ipipe_trace_panic_freeze() and NMI.
add-ipipe_preempt_disable.patch
Introduces ipipe_preempt_disable as an I-pipe-safe alternative to
preempt_disable. Required for kernel markers that come with LTTng.
hard-irq-disable-on-suspend-resume.patch
Old patch of mine to enable software-suspend over I-pipe.
remove-safe-current.patch
remove-ipipe_processor_id.patch
remove-ipipe_processor_id-i386.patch
Refreshed cleanup patches, setting in stone that we now have
non-stack-based smp_processor_id and current over most
architectures. What "most" precisely means, still needs to be
clarified.
remove-rwlocks.patch
Refreshed removal patch for the ironed rwlocks - now that Xenomai's
interrupt shield no longer needs them.
prepare-lttng.patch
ltt-ipipe.patch
LTTng preparation and I-pipe adoption patches. See README.lttng for
more details.
/xenomai
--------
rt-safe-skin-dereference.patch
As posted a few days ago: Fixes the usage of module_put over
the Xenomai domain.
inline-rt_timer-services.patch
Inline trivial rt_timer services of the native skin for kernel
usage. Saves object size, micro-optimises their usage.
uninline-tsc-ns.patch
Uninlines the huge xnarch_tsc_to_ns and xnarch_ns_to_tsc functions.
Specifically on low-end boxes with small caches, this appears to buy
us several microseconds worst-case latency. :)
fast-tsc-to-ns.patch
Integration of my scaled-math-based xnarch_tsc_to_ns service for
i386 at least. xnarch_ns_to_tsc remains untouched in order to keep
conversion errors small. clocktest reports no significant precision
regression here, and both code size and execution speed improved.
flatten-timer-irq.patch
As posted earlier: Refactor the timer IRQ path.
xntimer-start-in-tick.patch
As posted earlier: Only reprogram the hardware timer once per tick.
optimise-periodic-xntimers.patch
Simplifies the tests that have to be done in the tick handler in
order to decide if an xntimer shall be reloaded by introducing a new
timer state XNTIMER_PERIODIC and testing all states at once.
xeno-kill-ipipe_processor_id.patch
Refreshed cleanup patch to remove ipipe_processor_id completely.
remove-rthal_rwlock.patch
Refreshed removal patch for the now unused rthal_rwlocks.
librtutils.patch
My original librtprint patch. I now renamed the library to
librtutils to express that more stuff beyond rt_print may find its
home here in the future. Hopefully acceptable now.
rtsystrace-v2.patch
Updated proposal to add rt_print-based Xenomai syscall tracing.
Still in early stage, and I'm lacking feedback on this approach, if
it makes sense to pursue it.
lttng.patch
Very rough patch to make LTTng work with Xenomai again. This patch
tries to follow Jean-Olivier Villemure's original work very closely
to get something working first. Needs more cleanups and enhancements
as I explained earlier in the LTTng announcement.
/lttng
------
lttv-xenomai.patch
Rebased version of Jean-Olivier Villemure's original LTTV extension
for Xenomai. Applies to LTTV 0.8.82 but is still unstable and
quickly crashes when visualising Xenomai traces.
Check out, give it a try. Feedback would be appreciated, just as well as
patches/fixes, e.g. to add support for further archs where only i386 is
included yet.
Jan
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