== 64 bit atomics ==
* Nailed one more of the membase tests; again this was a test
harness race condition (which I've reported here:
http://code.google.com/p/moxi/issues/detail?id=2&thanks=2&ts=1321037460 )
In this case there were two calls to write) performed on the
server, yet the test client performed a single read and
compared the result to what it was expecting; and got lucky on x86 and
about half the time on ARM in that the
server data managed to all get read by the 1st read.
I think this leaves one more case - that I've seen rarely.
== Qemu ==
* Tested Peter's 11.11 pre release; ran into a couple of issues
(vexpress without sound causing hangs, and
the Linaro 11.10 Beagle and Overo images not running X). Also
filed a couple of bugs in l-i-f-ui that
I tripped over while testing it.
== String routines ==
* The new newlib A15 optimised memcpy is slower on an A9 than my
routines; posted to newlib list
asking what the normal way of dealing with a bunch of different
routines is. Would it make sense to get
gcc to define a GCC_ARM_TUNE_CORTEX_A-whatever ?
== Other ==
* Watched the Youtube video of the Kernel/Toolchain discussion -
for those who didn't attend,
I'd encourage a check of the Youtube videos, they're pretty nicely done.
* Got pulled away on non-Linaro work for about half the week.
Dave
Hi,
Android:
* managed to remotely debug a system process (like debuggerd) using
gdbserver
libunwind:
* found an error when unwinding via DWARF debug frames when
configured for REMOTE_ONLY
* discussions on the me revealed that libunwind-ptrace should not be
compiled for REMOTE_ONLY case at all (it was intended for host!=target)
* this means that our current build approach on Android needs to be
changed in the future
Misc:
* internal meetings
Regards
Ken
RAG:
Red:
Amber: upstream-omap3-cleanup stalled, not clear whether we're going
to have any time for it this quarter
Green:
Current Milestones:
|| || Planned || Estimate || Actual ||
||upstream-omap3-cleanup || 2011-11-10 || 2011-11-10 || ||
(Future milestones to be added once post-Connect planning is completed.)
Historical Milestones:
||add-omap3-networking || 2011-10-13 || 2011-10-13 || 2011-10-13 ||
||a15-systemmode-planning || 2011-10-13 || 2011-10-13 || 2011-09-22 ||
||a15-usermode-support || 2011-11-10 || 2011-11-10 || 2011-10-27 ||
== linaro-qemu-11.11 ==
* 2011.11 release: tarball built, tested and released
== other ==
* nailing down A15/KVM work we're going to do this quarter
* usual upstream code review/etc
* sent patches upstream to fix some easy bugs somebody found
running Coverity on QEMU's source code
Hi!
* Ran EEMBC and SPEC on the ursa4. Sorted out a bunch of basic questions
related to permissions ans such with Michael. Familiarized myself with the
scripts for parsing benchmark results.
* Created wiki for running benchmarks in cbuild. It is in my sandbox right
now: https://wiki.linaro.org/AsaSandahl/Sandbox/RunningBenchmark
* Started off SPEC runs for comparing the "train" and "ref" data sets. We
want to know if the changes between variants are the same for the two sets.
Best regards
Åsa
The Linaro Toolchain Working Group is pleased to announce the
release of Linaro QEMU 2011.11.
Linaro QEMU 2011.11 is the latest monthly release of
qemu-linaro. Based off upstream (trunk) QEMU, it includes a
number of ARM-focused bug fixes and enhancements.
New in this month's release:
- The ARM vexpress-a9, versatilepb, versatileab and realview-*
boards now have audio support (thanks to Mathieu Sonet who
contributed a PL041 implementation upstream)
- Support for multiple instances of the "-sd" option on the
command line has been dropped; this was never present in
upstream QEMU and has been removed for consistency. Use
"-drive,if=sd,index=N,file=file.img" for N=0,1,2... instead
- Fixes #886980: 8 and 16 bit reads from the OMAP GPIO module
would crash due to an infinite recursion
- Fixes #823902: problems running multithreaded programs in
linux-user mode
Known issues:
- Graphics do not work for OMAP3 based models (beagle, overo)
with 11.10 Linaro images.
NB: if you run QEMU on a host system without properly configured
audio you might find that QEMU now hangs at some point; you can
fix this by fixing your host system, or work around it by setting
the environment variable QEMU_AUDIO_DRV=none.
If you build from source you may now want to pass configure
a suitable --audio-drv-list=LIST option.
The source tarball is available at:
https://launchpad.net/qemu-linaro/+milestone/2011.11
Binary builds of this qemu-linaro release are being prepared and
will be available shortly for users of Ubuntu. Packages will be in
the linaro-maintainers tools ppa:
https://launchpad.net/~linaro-maintainers/+archive/tools/
More information on Linaro QEMU is available at:
https://launchpad.net/qemu-linaro
Hi,
- SLP improvements for weight-h264-pixels16x16-8 (libav):
- conditions in SLP - committed upstream
- support pattern detection in SLP - implemented
- enhance mixed condition pattern to handle non-constant then/else
clauses - implemented
weight-h264-pixels16x16-8 now gets vectorized with 2.6x speedup.
- Vectorizer maintenance (bug fixes, patch reviews).
I'll be on vacation on Sunday.
Ira
Hi there,
As discussed with Loïc, please find attached my slides to the ELCE presentation related to our implementation of linux-awareness for JTAG debugging. I still need a formal clearance of my organization on my contribution patch, but I (and my managers) will be happy to see some or all of this work benefit to-and-from the community. If you are interested, I will try to upload a self-contained qemu-based demo to a public ftp.
Cheers,
Marc Titinger.
> -----Original Message-----
> From: Loïc Minier [mailto:lool@dooz.org]
> Sent: Wednesday, November 02, 2011 3:19 PM
> To: Marc TITINGER
> Cc: Michael Hope; Ulrich Weigand
> Subject: Re: contribution Linux Kernel Debugger
>
> On Wed, Nov 02, 2011, Marc TITINGER wrote:
> > J'ai été content de vous rencontrer toi et Nicolas à la suite de ma
> > présentation pour discuter de l'opportunité de la contribution de
> > notre debugger linux. J'ai une question: dans la mesure ou STMicro ne
> > fait pas partie des membres de linaro, aurais-je un accès restreint
> > aux outils et discussions si je souhaite contribuer? Quels serons les
> > blueprints correspondant à ce projet ?
>
> Most things Linaro does are public; concerning the toolchain,
> benchmarks are kept private due to licensing constraints. Even if
> STMicro is not a member, you're welcome to present your ideas and code
> to us (we don't mind if STMicro joins as a member though ;-).
>
> We covered topics similar to your ELC-Europe talk this week:
> https://blueprints.launchpad.net/linaro-toolchain-misc/+spec/linaro-
> toolchain-kernel-debugging
>
> Ulrich Weigand and Michael Hope will continue discussions around where
> we will go in terms of helping kernel debugging next cycle, it might
> be
> that we end up working on similar areas than the ones you and I
> discussed (special handling for linux in GDB -- tasks, backtracing
> across kernelspace/userspace; OpenOCD fixes...).
>
> Your slides don't seem to be at
> https://events.linuxfoundation.org/events/embedded-linux-conference-
> europe/titinger
> yet, so perhaps you could share a link with Michael and Ulrich? or
> post on the linaro-toolchain@ mailing-list
>
> We'll be a bit busy this week, but if you want to discuss your
> patches,
> upstreaming, further developments, I would think Michael can arrange
> for you to join a Toolchain WG call in the next weeks -- Michael, I'll
> let you comment once you get to see the slides :-)
>
> --
> Loïc Minier
Summary:
* Add zlib and libiconv support in crosstool-ng and repack embedded
toolchain source package.
Details:
* Read crosstool-ng scripts, configs and document to learn on how it works.
* Try mkedwards's extensions for crosstool-ng at
https://github.com/mkedwards/crosstool-ng. It does have lots of
extensions, the GDB-cross can build. But zlib and libiconv do not meet
our requirement.
* Add config, patch and build scripts for zlib and update the binutils
build scripts to use the prebuilt zlib.
* Add config and build scripts for libiconv and update the build
scripts of gcc and gdb.
* Write scripts to patch and repack embedded toolchain source packages
to the standard format.
Plans:
* Linaro connect: Oct. 31 - Nov. 4.
* Integrate the repack scripts with crosstool-ng.
Thanks!
-Zhenqiang
RAG:
Red:
Amber:
Green:
Current Milestones:
|| || Planned || Estimate || Actual ||
||upstream-omap3-cleanup || 2011-11-10 || 2011-11-10 || ||
Historical Milestones:
||add-omap3-networking || 2011-10-13 || 2011-10-13 || 2011-10-13 ||
||a15-systemmode-planning || 2011-10-13 || 2011-10-13 || 2011-09-22 ||
||a15-usermode-support || 2011-11-10 || 2011-11-10 || 2011-10-27 ||
== other ==
* Linaro Connect week. Included an extremely useful double-length
session about KVM on A15, which should turn into blueprints/plans
in due course
* Found out a bit more about UEFI -- I'm leaning towards having QEMU
for vexpress run UEFI by default as a way of letting you just pass
it a disk image rather than having to feed it a separatekernel/initrd.
(Will look into this more when the ARM landing team have it all
building and working on hardware.)
* I have a working prototype of the QEMU virtio-mmio transport (written
to Pawel's spec). However to get this upstream we will first need to
properly refactor the qemu virtio code so the link between the
transport and the blk/net/etc backends is a qdev bus.
-- PMM
Continue working on the regsiter pressure estimation implementation -
testing the implementation on libav micro benchmarks.
With the patch some SMSed kernels in put-h264-qpel8-hv-lowpass-8,
swscale-rgb24ToY_c mjpegenc benchmarks are identified as having
register pressure.
I'm looking at the kernels which still have regressions with SMS and
it seems the reason is not related to register pressure.
