linaro-dev October 2013

linaro-dev@lists.linaro.org

43 participants
34 discussions

Google hangout not working in debian sid/testing

by Nicolas Dechesne

hi, first of all, this isn't meant to be a distro trolling discussion, there are better places for that ;-) several days ago google HO started to fail after updating my debian/sid setup. as discussed on G+ [1] and on googlegroups [2], that seemed to be impacting anyone on debian/sid. when i realized that it was working on debian/testing (Jessie) i decided just use 'testing'... however since last evening update on 'testing', it started to fail too.. leaving me without any working HO at all, which is quite inconvenient at Linaro.. after bisecting my system using snapshot.debian.org, i figured out which package was the culprit: # apt-cache policy libcairo2 libcairo2: Installed: 1.12.14-4 Candidate: 1.12.14-4 Package pin: 1.12.14-4 Version table: 1.12.16-2 1001 500 http://ftp.fr.debian.org/debian/ testing/main amd64 Packages *** 1.12.14-4 1001 500 http://snapshot.debian.org/archive/debian/20130927T214600Z/testing/main amd64 Packages 100 /var/lib/dpkg/status Simply downgrading libcairo2 [3] 'fixes' the problem. I know it's not 'fixing' it really, but i hope that this will be enough information so that the real fix is uploaded. In the mean time, if any of use use Debian , you can use that as a workaround.. cheers nico [1] https://plus.google.com/u/0/108790110407014289037/posts/5q22d1ReavG [2] https://productforums.google.com/d/msg/hangouts/vYsaeEnXJXs/hOy2HaW5LKoJ [3] http://snapshot.debian.org/archive/debian/20130927T214600Z/pool/main/c/cair…

10 years, 8 months

GSOC results example

by Renato Golin

One example of the kind of results that come from a GSOC project: http://flang-gsoc.blogspot.ie/2013/09/end-of-gsoc-report.html Might be worth thinking about it next year? cheers, --renato

10 years, 11 months

Test: OMAP5432-EVM support?

by wireless

Hello, I'm new to linaro. so this posting is also to ensure my listserv access is allowing me to post. What I was expecting is a matrix to allow new devs to quickly glean features and decide which boards to purchase or recommend to clients to purchase, for rapid prototyping. Since Linaro is flapping loudly about Grub2, I should think that support for the modern file systems on the 64 Bit arm offerings would abound, such as ZFS, CEPH, GlusterFS, etc etc. Anyone clustering arm dev boards into something big? Sharing knowledge? I've been reading, but I have not found many different boards that are supported. OK. Maybe folks are working on boards from TI, Freescale and the other big vendors, but do not list the boards on Linaro? If so, where would these repositories be located. For example here are a few boards, built/offered by members of the Linaro alliance, yet I find no embedded linux repositories for 64 bit systems and modern file systems, clustering nor distributed applications ? I did find Arndale 5250 support and a bunch of lesser processors and NO SATA3 support: https://wiki.linaro.org/Boards Mote: http://www.linaro.org/engineering/getting-started/low-cost-development-boar… TI: http://www.phytec.com/products/system-on-modules/phycore/omap5430/ http://www.variscite.com/products/system-on-module-som/cortex-a15/var-som-o… http://www.ti.com/tool/omap5432-evm?DCMP=omap-5432evm-130521&HQS=omap-5432e… You guys are kidding right? Or are the big vendors just here for promotional (fluff) reasons? curiously perplexed, James

11 years, 1 month

raw spin lock

by Ryan

Hi, What is a raw spin lock made by the call: DEFINE_RAW_SPINLOCK When someone locks - it just keeps looping until it 0 & then set it to 1 and when someone unlocks it makes it 0. is this how this works? /Ryan

11 years, 1 month

Test Result Summary of Calender week 43, 2013 for Linaro Openembedded 13.10 Release Candidate

by Soumya Basak

Calendar Week 43 2013, 13.10 RC: Here is test result summary for Linaro Openembedded 13.10 Release Candidate on following images: 1) Linaro Openembedded LAMP Image; 2) Linaro Openembedded Minimal Image; 3) Linaro Open Embedded LEG Java ARMv8 Image; 4) Linaro OpenEmbedded ARM Versatile Express A9 with ALIP image; 1. Linaro Open Embedded LAMP Image (Column AO): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDhwR… 2. Linaro Open Embedded Minimal Image (Column AO): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDhwR… 3. Linaro Open Embedded LEG Java ARMv8 Image (Column R): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDhwR… 4. Linaro OpenEmbedded ARM Versatile Express A9 with ALIP image (Column: C): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdFNmV… Please refer to the test result spreadsheets for details. Thank You. Best Regards Soumya Basak

11 years, 1 month

Test Result Summary of Calendar Week 43, 2013 for Linaro Android 13.10 Release Candidate.

by Soumya Basak

Calendar Week 43 2013, 13.10 RC: Here is test result summary for Linaro Android 13.10 Release Candidate on following boards: 1) ARM Versatile Express A9; 2) ARM Versatile Express TC2 LSK; 3) Samsung Arndale; 4) Samsung Galaxy Nexus; 5) TI Panda 4430; 6) TI Panda 4460. 1. ARM Versatile Express A9 + Linaro Android Jellybean (Column BG): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 2. ARM Versatile Express TC2 LSK + Linaro Android Jellybean (Column F): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 3. Samsung Arndale + Linaro Android Jellybean (Column Q): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… 4. Samsung Galaxy Nexus + Linaro Android Jellybean (Column L): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdFhhe… 5. TI Panda 4430 + Linaro Android Jellybean (Column BG): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 6. TI Panda 4460 + Linaro Android Jellybean (Column BG): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… Please refer to the result spreadsheets for details test result. Thank You. Best Regards Soumya Basak.

11 years, 1 month

Test Result Summary for Linux Linaro ubuntu 13.10 Release.

by Botao Sun

Linaro 13.10 Release: Here is the test result summary for Linux Linaro ubuntu Raring image on following targets: 1) ARM Versatile Express A9; 2) Samsung Arndale; 3) TI Panda 4430; 4) TI Panda 4460; 1. ARM Versatile Express A9 + Linux Linaro Raring (Column AR): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdFNmV… 2. Samsung Arndale + Linux Linaro Raring (Column AK): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… 3. TI Panda 4430 + Linux Linaro Raring (Column AR): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… 4. TI Panda 4460 + Linux Linaro Raring (Column AR): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… For consolidated test result spreadsheet, please refer to this link: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDdWZ… For test result summary of calendar Week 42, please refer to attachment. Thank you. Best Regards Botao Sun

11 years, 1 month

TI OMAP5432-EVM support?

by CCAAT

Hello, Is the TI board supported by Linaro? If so, available downloads? ports? etc? new to group, James

11 years, 1 month

[PATCH V2 Resend 0/4] Create sched_select_cpu() and use it for workqueues and timers

by Viresh Kumar

Hi All, This is V2 Resend of my sched_select_cpu() work. Resend because didn't got much attention on V2. Including more guys now in cc :) In order to save power, it would be useful to schedule work onto non-IDLE cpus instead of waking up an IDLE one. To achieve this, we need scheduler to guide kernel frameworks (like: timers & workqueues) on which is the most preferred CPU that must be used for these tasks. This patchset is about implementing this concept. - The first patch adds sched_select_cpu() routine which returns the preferred cpu which is non-idle. - Second patch removes idle_cpu() calls from timer & hrtimer. - Third patch is about adapting this change in workqueue framework. - Fourth patch add migration capability in running timer Earlier discussions over v1 can be found here: http://www.mail-archive.com/linaro-dev@lists.linaro.org/msg13342.html Earlier discussions over this concept were done at last LPC: http://summit.linuxplumbersconf.org/lpc-2012/meeting/90/lpc2012-sched-timer… Module created for testing this behavior is present here: http://git.linaro.org/gitweb?p=people/vireshk/module.git;a=summary Following are the steps followed in test module: 1. Run single work on each cpu 2. This work will start a timer after x (tested with 10) jiffies of delay 3. Timer routine queues a work... (This may be called from idle or non-idle cpu) and starts the same timer again STEP 3 is done for n number of times (i.e. queuing n works, one after other) 4. All works will call a single routine, which will count following per cpu: - Total works processed by a CPU - Total works processed by a CPU, which are queued from it - Total works processed by a CPU, which aren't queued from it Setup: ----- - ARM Vexpress TC2 - big.LITTLE CPU - Core 0-1: A15, 2-4: A7 - rootfs: linaro-ubuntu-nano Results: ------- Without Workqueue Modification, i.e. PATCH 3/3: [ 2493.022335] Workqueue Analyser: works processsed by CPU0, Total: 1000, Own: 0, migrated: 0 [ 2493.047789] Workqueue Analyser: works processsed by CPU1, Total: 1000, Own: 0, migrated: 0 [ 2493.072918] Workqueue Analyser: works processsed by CPU2, Total: 1000, Own: 0, migrated: 0 [ 2493.098576] Workqueue Analyser: works processsed by CPU3, Total: 1000, Own: 0, migrated: 0 [ 2493.123702] Workqueue Analyser: works processsed by CPU4, Total: 1000, Own: 0, migrated: 0 With Workqueue Modification, i.e. PATCH 3/3: [ 2493.022335] Workqueue Analyser: works processsed by CPU0, Total: 1002, Own: 999, migrated: 3 [ 2493.047789] Workqueue Analyser: works processsed by CPU1, Total: 998, Own: 997, migrated: 1 [ 2493.072918] Workqueue Analyser: works processsed by CPU2, Total: 1013, Own: 996, migrated: 17 [ 2493.098576] Workqueue Analyser: works processsed by CPU3, Total: 998, Own: 993, migrated: 5 [ 2493.123702] Workqueue Analyser: works processsed by CPU4, Total: 989, Own: 987, migrated: 2 V2->V2-Resend ------------- - Included timer migration patch in the same thread. V1->V2 ----- - New SD_* macros removed now and earlier ones used - sched_select_cpu() rewritten and it includes the check on current cpu's idleness. - cpu_idle() calls from timer and hrtimer removed now. - Patch 2/3 from V1, removed as it doesn't apply to latest workqueue branch from tejun. - CONFIG_MIGRATE_WQ removed and so is wq_select_cpu() - sched_select_cpu() called only from __queue_work() - got tejun/for-3.7 branch in my tree, before making workqueue changes. Viresh Kumar (4): sched: Create sched_select_cpu() to give preferred CPU for power saving timer: hrtimer: Don't check idle_cpu() before calling get_nohz_timer_target() workqueue: Schedule work on non-idle cpu instead of current one timer: Migrate running timer include/linux/sched.h | 16 ++++++++++-- include/linux/timer.h | 2 ++ kernel/hrtimer.c | 2 +- kernel/sched/core.c | 69 +++++++++++++++++++++++++++++++-------------------- kernel/timer.c | 50 ++++++++++++++++++++++--------------- kernel/workqueue.c | 4 +-- 6 files changed, 91 insertions(+), 52 deletions(-) -- 1.7.12.rc2.18.g61b472e

11 years, 1 month

How to compile u-boot with linaro-arm-linux-gnueabihf-4.8-2013.09

by Patrick Doyle

I have tried this: $ make CROSS_COMPILE=arm-linux-gnueabihf- distclean $ make CROSS_COMPILE=arm-linux-gnueabihf- zynq_zed_config $ make CROSS_COMPILE=arm-linux-gnueabihf- and that failed with: arm-linux-gnueabihf-ld.bfd: error: /opt/gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux/bin/../lib/gcc/arm-linux-gnueabihf/4.8.2/libgcc.a(_udivdi3.o) uses VFP register arguments, u-boot does not arm-linux-gnueabihf-ld.bfd: failed to merge target specific data of file /opt/gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux/bin/../lib/gcc/arm-linux-gnueabihf/4.8.2/libgcc.a(_udivdi3.o) So I tried this: $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- distclean $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zynq_zed_config $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- and that failed differently: arm-linux-gnueabihf-ld.bfd: error: /opt/gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux/bin/../lib/gcc/arm-linux-gnueabihf/4.8.2/libgcc.a(_udivdi3.o) uses VFP register arguments, u-boot does not arm-linux-gnueabihf-ld.bfd: failed to merge target specific data of file /opt/gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux/bin/../lib/gcc/arm-linux-gnueabihf/4.8.2/libgcc.a(_udivdi3.o) The README.txt file that came with the toolchain said: "In addition to the default configuration, a basic ARMv4T runtime is included for use when building baremetal projects such as Linux and u-boot for earlier architectures. To use it, pass the following flags to GCC: -marm -march=armv4t -mfloat-abi=soft" So I tried this: $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- "CFLAGS=-marm -march=armv4t -mfloat-abi=soft" distclean $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- "CFLAGS=-marm -march=armv4t -mfloat-abi=soft" zynq_zed_config $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- "CFLAGS=-marm -march=armv4t -mfloat-abi=soft" and that failed in autoconf. Looking more carefully at the Makefile, I think maybe I should set OBJCFLAGS instead of CFLAGS. That gave me the same error as my first attempt. Not surprising, since OBJCFLAGS doesn't seem to be used. FWIW. I'm using the u-boot I cloned from commit f12f87e205d5cd1c75a0d93770de54ffb8b14343 from git:// git.xilinx.com/u-boot-xlnx.git. Any tips where I should start looking for clues? Thanks. --wpd

11 years, 1 month

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linaro-dev October 2013