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4332 discussions

Efika MX Smartbook + serial dongle needed at Linaro Connect

by Marcin Juszkiewicz

Hi Looks like I managed to break serial port on my Efika MX Smartbook today. As there are people in Linaro with this device I am asking for help. For this I need someone with Efika MX Smartbook and debug board to be present at conference. I will take my netbook and dongle so will be able to check is it dongle or Efika which broke for me. If you have both and have no use for them I can take it from you - will have no problems finding someone here wanting to play & hack on Efika ;)

14 years

[ACTIVITY] Multimedia WG weekly report - wk05.2012 (20120130-20120203)

by Ilias Biris

Hello! Please find below the summary of the weekly report for Multimedia WG, the full version of which (with links and detail) is in https://wiki.linaro.org/WorkingGroups/Middleware/Multimedia/WeeklyReport The last meeting minutes are in https://wiki.linaro.org/WorkingGroups/Middleware/Multimedia/Notes/2012-01-31 For Connect, there are a number of sessions related to tackling audio issues, as well as a session on codecs, display api, tiny-sphinx (audio recognition) and tinyalsa. See the sessions in https://blueprints.launchpad.net/sprints/lcq1-12?searchtext=linaro-gfxmm and join the group to discuss! Tom has also been keeping a day-to-day plan of activities in https://wiki.linaro.org/TomGall/DraftPlan/20121QLC == Highlights == - Built and configured a working audio stack on panda/Ubuntu desktop - verified and closed defect 893402, worked on porting and debugging e2eaudiotest to panda, and finished also blueprint https://blueprints.launchpad.net/linaro-multimedia-project/+spec/engr-mm-au… - Libav AAC-SBR optimisations committed upstream with AAC-PS optimisation underway - v4l2+dmabuf+dri2video demo working - For DRM : dri2video cleanup and patches - Continued tinyalsa/tinyhardware work for UCM - Wrote ION documentation - https://wiki.linaro.org/BenjaminGaignard/ion - Update work for cma-test to use CMA v19 == Issues == - #880173 - Audio does not work on Upstream Panda - #889844 - Audio on HDMI is not working on trackin-panda - Fix Released from Landing Team remaining issue seems to be Android userland - #908957 - ICS: All arches: No aplay / arecord or equivalent - #911860 Android NEON detection is busticated - Triaged == Risks == - Risk of some Android-related Multimedia blueprints not finishing on time due to bugs #880173, #889844, #908957 (and the fact that time is short till the component release) - LJT - support upstream 1.2 blueprint could be delayed since upstream v1.2 source has to be tagged and released first BR, -- Ilias Biris ilias.biris(a)linaro.org Project Manager, Linaro M: +358504839608, IRC: ibiris Skype: ilias_biris Linaro.org│ Open source software for ARM SoCs

14 years

Re: Linaro Android against vanilla linux kernel versions

by Paul Sokolovsky

Hello Tugrul, On Fri, 3 Feb 2012 10:00:56 +0200 "Guclu, Tugrul" <tugrul.guclu(a)siemens.com> wrote: > Hi Paul > > Thanks for your answer. That was what I'm looking for. I got 2 more > questions if you would mind. > > 1) > All Android buils are available here > https://android-build.linaro.org/#builds=all ,correct ? Yes, both official monthly releases and daily releases are available there, old dailies are expired in 3 months though (release stay all the time). > If that is the case the oldest belongs to > ~linaro-android/panda-11.04-release 2011-04-28 15:28:40 Yes, 2011.04 was apparently first official Linaro Android release, and Linaro started working on Android not long before that. > 2) this is from ym download script > /repo init -u git://android.git.linaro.org/platform/manifest.git -b > linaro_android_2.3.5 > --repo-url=git://android.git.linaro.org/tools/repo.git -b gingerbread > || exit 1 > Where can I find the pinned manifest of linaro_android_2.3.5 ? Because > this build is not displayed in the > https://android-build.linaro.org/#builds=all ? Pinned manifests come for specific builds. The earliest release build for imx35 appears to be https://android-build.linaro.org/builds/~linaro-android/leb-imx53-11.07-rel… , and from a quick look that's even 2.3.4. Not sure about the kernel though, please check yourself - even though it's 2.3.4, we might have used much newer kernel than AOSP 2.3.4 (well, that's what Linaro does - leverages and tests newer technologies so vendors and community were more comfortable with adopting them). > BR > > Tugrul > -- Best Regards, Paul Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

14 years

[RFC] Upcoming work view for individual engineers

by Guilherme Salgado

Hi folks, We're trying to make status.l.o more useful to engineers and the first thing we're planning to do is a new page listing the upcoming work assigned to a given person. I'm attaching a mockup of that view here and we'd like to know what you think of it... Do you think that would be useful to you? Is there any other information you'd like to see there, or maybe a different way to present/group them? Cheers, -- Guilherme Salgado <https://launchpad.net/~salgado>

14 years

[ACTIVITY] Graphics WG weekly report - wk 05.2012 (20120130-20120203)

by Ilias Biris

Hello! Please find below the summary of the weekly report, which can be found in https://wiki.linaro.org/WorkingGroups/Middleware/Graphics/WeeklyReport with more details and links. The last meeting minutes: https://wiki.linaro.org/WorkingGroups/Middleware/Graphics/Notes/2012-02-01 Please check also the Connect Graphics and Multimedia sessions as lined up through the blueprints: https://blueprints.launchpad.net/sprints/lcq1-12?searchtext=linaro-gfxmm == Highlights == - 12.01 release completed, here are some statistics: + 3 out of 6 blueprints completed, + 2 Lava related blueprints moved to 12.02 (https://blueprints.launchpad.net/linaro-graphics-tests/+spec/lava-tests-run… and https://blueprints.launchpad.net/linaro-graphics-dashboard/+spec/linaro-gra… both those blueprints are still in need of infrastructure) + the dma-buf + v4l2 as a user blueprint was put on hold since there is discussion ongoing related to the evolution of dma-buf - Worked to resolve issues for the Nux/Compiz/Unity release, Unity with gles2.0 branch was approved and on its way to be merged - Fixed display issue when playing two desktop scenes in a row, exposed by the canvas-reset branch functionality == Issues == - Dashboard bugs: #881789 - timeout in image deployment and #904796 - provide staging/development lava server instances are a still there and pose a risk for our work with the LAVA dashboard for glmark2 tests - The following issues need to be addressed for 12.02 release: + compiz issues (eg organize and prioritize the "refactoring" - chunking it down into manageable patches - of the compiz changes so we can move forward sanely) + upstream (e.g. dmabuf) review cycles + data publishing policy and what it means for our dashboard work == Risks == - Even though there are actions now taken to deal with Unity/Nux/Compiz, it is possible that those packages are have issues which may require more time for the release - If the dashboard related bugs are not resolved during Connect it will be once again necessary to move those blueprints forward. This would be the 3rd milestone in a row where we move those blueprints, so we should work together with Validation team to make sure the bugs are resolved - Due to the current process of discussing the evolution of dma-buf with upstream (DRM and V4L2 communities) it is very probable to not have something ready for dma-buf for 12.02, we would then target 12.03 instead Best regards, -- Ilias Biris ilias.biris(a)linaro.org Project Manager, Linaro M: +358504839608, IRC: ibiris Skype: ilias_biris Linaro.org│ Open source software for ARM SoCs

14 years

[PATCH] module: debugging check for runaway kthreads

by Dmitry Antipov

Debugging option CONFIG_MODULE_KTHREAD_CHECK provides a way to check whether all kernel threads created by the module and have used module code as a thread worker function are really exited when the module is unloaded. See http://marc.info/?l=linux-kernel&m=132811276131767&w=2 to check why it might be useful. Signed-off-by: Dmitry Antipov <dmitry.antipov(a)linaro.org> --- include/linux/kthread.h | 5 +++++ init/Kconfig | 9 +++++++++ kernel/kthread.c | 24 ++++++++++++++++++++++++ kernel/module.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 83 insertions(+), 0 deletions(-) diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 0714b24..33897c3 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -13,6 +13,11 @@ struct task_struct *kthread_create_on_node(int (*threadfn)(void *data), #define kthread_create(threadfn, data, namefmt, arg...) \ kthread_create_on_node(threadfn, data, -1, namefmt, ##arg) +#ifdef CONFIG_MODULE_KTHREAD_CHECK +unsigned long get_kthread_func(struct task_struct *tsk); +#else +#define get_kthread_func(tsk, addr, mod) (0) +#endif /** * kthread_run - create and wake a thread. diff --git a/init/Kconfig b/init/Kconfig index 3f42cd6..fa7c6e0 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1397,6 +1397,15 @@ config MODULE_FORCE_UNLOAD rmmod). This is mainly for kernel developers and desperate users. If unsure, say N. +config MODULE_KTHREAD_CHECK + bool "Check for runaway kernel threads at module unload" + depends on MODULE_UNLOAD && EXPERIMENTAL && DEBUG_KERNEL + help + This option allows you to check whether all kernel threads created + by the module and have used module code as a thread worker function + are really exited when the module is unloaded. This is mainly for + module developers. If insure, say N. + config MODVERSIONS bool "Module versioning support" help diff --git a/kernel/kthread.c b/kernel/kthread.c index 3d3de63..5c53817 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -38,6 +38,9 @@ struct kthread_create_info struct kthread { int should_stop; +#ifdef CONFIG_MODULE_KTHREAD_CHECK + void *fn; +#endif void *data; struct completion exited; }; @@ -45,6 +48,24 @@ struct kthread { #define to_kthread(tsk) \ container_of((tsk)->vfork_done, struct kthread, exited) +#ifdef CONFIG_MODULE_KTHREAD_CHECK + +unsigned long get_kthread_func(struct task_struct *tsk) +{ + struct kthread *kt; + unsigned long addr; + + get_task_struct(tsk); + BUG_ON(!(tsk->flags & PF_KTHREAD)); + kt = to_kthread(tsk); + barrier(); + addr = tsk->vfork_done ? (unsigned long)kt->fn : 0UL; + put_task_struct(tsk); + return addr; +} + +#endif /* CONFIG_MODULE_KTHREAD_CHECK */ + /** * kthread_should_stop - should this kthread return now? * @@ -106,6 +127,9 @@ static int kthread(void *_create) int ret; self.should_stop = 0; +#ifdef CONFIG_MODULE_KTHREAD_CHECK + self.fn = threadfn; +#endif self.data = data; init_completion(&self.exited); current->vfork_done = &self.exited; diff --git a/kernel/module.c b/kernel/module.c index 2c93276..fe6637b 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -45,6 +45,7 @@ #include <linux/string.h> #include <linux/mutex.h> #include <linux/rculist.h> +#include <linux/kthread.h> #include <asm/uaccess.h> #include <asm/cacheflush.h> #include <asm/mmu_context.h> @@ -764,6 +765,49 @@ static void wait_for_zero_refcount(struct module *mod) mutex_lock(&module_mutex); } +#ifdef CONFIG_KALLSYMS +static const char *get_ksymbol(struct module *mod, unsigned long addr, + unsigned long *size, unsigned long *offset); +#else +#define get_ksymbol(mod, addr, size, offset) NULL +#endif + +#ifdef CONFIG_MODULE_KTHREAD_CHECK + +static void check_kthreads(struct module *mod) +{ + unsigned long flags; + struct task_struct *g, *p; + + read_lock_irqsave(&tasklist_lock, flags); + do_each_thread(g, p) { + const char *name; + unsigned long addr, offset, size; + + /* Note kthreadd is special. Other kthreads should + have their 'struct kthread' on the stack until + do_exit() calls schedule() for the last time. */ + if (p->mm || p == kthreadd_task) + continue; + + addr = get_kthread_func(p); + if (__module_text_address(addr) == mod) { + name = get_ksymbol(mod, addr, &size, &offset); + printk(KERN_WARNING "khread %p[%s:%d] running " + "0x%lx(%s) is still alive, fix module %s, " + "crash possible\n", p, p->comm, p->pid, addr, + (name ? name : "<unknown>"), mod->name); + } + } while_each_thread(g, p); + read_unlock_irqrestore(&tasklist_lock, flags); +} + +#else + +#define check_kthreads(mod) do { } while (0) + +#endif /* CONFIG_MODULE_KTHREAD_CHECK */ + SYSCALL_DEFINE2(delete_module, const char __user *, name_user, unsigned int, flags) { @@ -831,6 +875,7 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user, blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_GOING, mod); async_synchronize_full(); + check_kthreads(mod); /* Store the name of the last unloaded module for diagnostic purposes */ strlcpy(last_unloaded_module, mod->name, sizeof(last_unloaded_module)); -- 1.7.7.6

14 years

Bugs report for Freescale i.MX53 Loco board run Android and Ubuntu with Linaro 11.12&12.01

by orientsusong

Dear Linaro Dev Team, Thanks a lot for your kindly and attentions, firstly! i test the Linaro Version 11.12&12.01 for MX53 Loco board this two months in Shenzhen, China. Bug 1: Boot Time too long, it needs 1 minutes past 53 seconds for Ubuntu on Linaro Version 11.12&12.01. and Android 4.0.1 and 4.0.3 boot time needs 2 minutes past 55 seconds. Bug 2: Android Launcher no response and unlock. Bug 3: HDMI sound interrupt. Bug 4: HDMI Display not fine and some noise signal on the monitor with Ubuntu 11.10 over Linaro 12.01. Thanks again! -------------------------------------------------------------------------------- If you have any question or requirement please feel free to contact me. Keep in touch. Thanks for your co-operations! 有任何疑问和问题，请及时跟宋超联系，谢谢支持！顺祝商祺 ! Best Regards! 宋超 Steven Song Tel:+86 755 86,638,386;86,638,396 +86 755 86,0298,880;86,639,890 Ext 816 Fax:+86 755 86,029,992 Mobile:+86 13,682,508,330 Email: orientsusong(a)126.com orientsusong(a)gmail.com MSN: orientsusong(a)hotmail.com QQ:472716555 Skype: orientsusong 深圳市海泰信科技发展有限公司 Shenzhen Hithing Technology Development Co., Ltd. Website: http://www.hithing.com/index.asp 中国深圳南山科技园南区长虹科技大厦 1301 室 518057 Rm1301, 13F,Changhong Technology Bldg.,South Block, Hi-Tech Park,Nanshan Dist.,Shenzhen 518057,P.R.China *************************************************************************************** The information in this email is confidential and may be legally privileged. Access to this email by anyone other than the intended addressee is unauthorized. If you are not the intended recipient of this message, any review, disclosure, copying, distribution, retention, or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. If you are not the intended recipient, please reply to or forward a copy of this message to the sender and delete the message, any attachments, and any copies thereof from your system. ****************************************************************************************

14 years

Linaro Android against vanilla linux kernel versions

by Guclu, Tugrul

Hi I have already asked thi question at http://ask.linaro.org/questions/607/looking-for-android-distribution-bui ld-on-top-of-linux-kernel-26359-for-imx53-board <http://ask.linaro.org/questions/607/looking-for-android-distribution-bu ild-on-top-of-linux-kernel-26359-for-imx53-board> but could not receive satisfactory answer. Exactly how can you determine against which vanilla linux kernel version linaro Android distribution is built ? Thanks for your support BR Tugrul

14 years

ubuntu-desktop/sources.txt bug/typo?

by Scott Douglass

Hi, I've noticed what looks like a bug/typo in http://releases.linaro.org/images/12.01/oneiric/ubuntu-desktop/sources.txt and I wonder if this is the right place to report it? Thanks. The last entry has "linarotv-xbmc" where I would expect "ubuntu-desktop": ... panda-ubuntu-desktop: http://releases.linaro.org/12.01/ubuntu/oneiric-hwpacks/ hwpack_linaro-lt-panda-x11-base_20120123-1_armel_supported.tar.gz: md5sum(4dae5fc312b4e0a73d81511e4e4b1e55) http://releases.linaro.org/12.01/ubuntu/oneiric-images/ubuntu-desktop linaro-o-linarotv-xbmc-tar-20120125-0.tar.gz: md5sum(e27e3af3d00eefa5f64f72f990482053) -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

14 years

Connect Sessions from the Developer Platform Team

by Ricardo Salveti

Hey folks, As usual, follows a list of the sessions the Developer Platform Team will lead at this Connect: Ubuntu LEB and LAVA: Current status and future planning for proper image testing and validation https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… Improvements and future discussions for LTs and the Ubuntu LEB https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… Packaged Kernel CI: Current Status and Next Steps https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… Sysroots: Automation, Maintenance and Future Work https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… U-Boot-Linaro Future Planning https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… Developer Platform: Future Planning https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… Cross Build with Multi-Arch: Current state and future planning https://blueprints.launchpad.net/linaro-ubuntu/+spec/linaro-platforms-q112-… Please make sure you subscribe to the ones you'd like to attend, and also add yourself as 'essential' to the ones you really like to participate (so the scheduler can find a free spot that's also available for you). This is not yet the final list, as we'll probably have additional ones until the end of the week, but you can always look for all the sessions related with the Developer Platform Team at https://blueprints.launchpad.net/linaro-ubuntu?searchtext=linaro-platforms-… Thanks, -- Ricardo Salveti de Araujo

14 years

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