linaro-dev November 2013

linaro-dev@lists.linaro.org

27 participants
20 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

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, 3 months

[Script]: Get isolation time of a CPU with NO_HZ_FULL

by Viresh Kumar

Hi Kevin, I have updated the script you shared here: https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/AdaptiveTickless?… to get the time for which cpu wasn't getting interrupted. Probably this might be useful for few other folks as well and so sharing it.. I am bad at scripting, so please ignore silly code in there :) So, the script will take a parameter, i.e. number of samples you need and will output the amount of time CPU1 (of a dual-core machine) was isolated. There is a variable "isdebug", which can be used to enable/disable debug messages. Let me know if there is something really stupid in it :) -- viresh

10 years, 4 months

Test Result Summary of Linaro Android 13.11 Release.

by Soumya Basak

Linaro Android 13.11 Release (Calender Week 48): Here is the test result summary for Linaro Android image on following targets: 1) TI-Panda 4460; 2) TI-Panda 4430; 3) Samsung Arndale; 4) Galaxy Nexus; 5) ARM Versatile Express A9; 6) ARM Versatile Express LSK TC2; 7) ARM Versatile Express TC2; 1. TI-Panda 4460 + Linaro Android 4.4 (Column: BK): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 2. TI-Panda 4430 + Linaro Android 4.4 (Column: BK): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 3. Samsung Arndale + Linaro Android 4.4 (Column: U): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… 4) Galaxy Nexus + Linaro Android 4.4 (Column: O): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdFhhe… 5) ARM Versatile Express A9 + Linaro Android 4.4 (Column: BJ): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 6) ARM Versatile Express LSK TC2 + Linaro Android 4.3.1 (Column: I): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 7) ARM Versatile Express TC2 + Linaro Android 4.4 (Column: R): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… For consolidated Linaro Android test result spreadsheet 13.11 release, please refer to this link: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdFBSN… Thank You. Best Regards Soumya Basak.

10 years, 4 months

Test Result Summary of Linux Linaro ubuntu 13.11 Release.

by Botao Sun

Linaro 13.11 Release (Calendar Week 48): Here is the test result summary for Linux Linaro ubuntu Raring image on following targets: 1) Samsung Arndale; 2) TI Panda 4430; 3) TI Panda 4460; 1. Samsung Arndale + Linux Linaro Raring (Column AM): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… 2. TI Panda 4430 + Linux Linaro Raring (Column AT): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… 3. TI Panda 4460 + Linux Linaro Raring (Column AT): 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… Thank you. Best Regards Botao Sun

10 years, 4 months

Ubuntu-based image for use with foundation model

by Michael Hudson-Doyle

Hi all, Do we have, or do we have plans for, an image that's based on Ubuntu that's usable with the foundation model? The only part I don't know how to do for myself is build the .axf file, which I guess I can teach myself but it would be even easier to just download something :-) Cheers, mwh

10 years, 4 months

Presentation on Kernel Shark by Steven Rostedt

by Viresh Kumar

In case somebody needs.. Video: http://www.youtube.com/watch?v=ABRtzVtUVBo Presentation: http://elinux.org/images/6/64/Elc2011_rostedt.pdf

10 years, 4 months

Heap reclaim question/documentation

by Karlsson, Magnus

Hi, Just wondering if somebody could point me to a good document on how the heap reclamation algorithm works for memory allocated in a user space program using the regular malloc/calloc functions. I am specifically interested in how effective it is in reclaiming memory. E.g., does it only reclaim from top of heap or does it reclaim from the complete heap? Are there multiple options for reclamation algorithms? Etc. Thank you: Magnus Magnus Karlsson Software Development Engineering Manager LSI Corporation Box 1024, Knarrarnäsgatan 15 SE-164 21 Kista, Sweden TEL +46 8 594 607 09 FAX +46 8 594 607 10 CELL +46 73 80 444 88 magnus.karlsson(a)lsi.com

10 years, 5 months

X11 crash on Cotton Candy

by Daniel Barker

I couldn't find a Cotton Candy-specific forum. Perhaps someone here will have advice. My apologies if I'm off-topic. I'm using Linaro on the FXI Cotton Candy. At least every few hours, it experiences an X server crash, which logs me out. Here is an example syslog message from the time of the crash: Nov 20 08:27:46 linaro-ubuntu-desktop gnome-session[3350]: Gdk-WARNING: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.#012 A brief search online suggests this may be a problem with the video driver. But I'm not sure. I will be very glad of any assistance. The crash is intermittent and difficult to reproduce. It seems to happen when I'm 'doing something', e.g. opening a new window, clicking a link or scrolling in Firefox, resizing a window, or viewing a photo attached to email. It does not seem to crash when the machine is idle. I'm running Linaro (Ubuntu-beta-20130309.zip from FXI's Web site), which I reinstalled earlier this week then did 'apt-get update' and 'apt-get upgrade', and configured in various simple ways (e.g. software firewall, wireless networks, software installations using apt). The X server crash has happened before and after the reinstallation. Without a swap file, there were some out of memory problems. I added a swapfile, which removed the out of memory problems. The X server still crashes. I've also emailed FXI support but have not yet heard. Thank you very much, in advance, Daniel Daniel Barker http://biology.st-andrews.ac.uk/staff/db60 The University of St Andrews is a charity registered in Scotland : No SC013532

10 years, 5 months

one exception about "aplay" on ARM64

by Nenghua Cao

Hi, expert: Recently, I encounter a tricky issue when using "aplay" to playback music on arm64 core, but "aplay" application and "alsa-lib" are 32 bit version. The exception happens and it results in "aplay" segment fault. I tried to root cause it thought adding some logs, but I don't catch it. Any suggestion will be appreciated! Thanks! 1. Aplay will call the "writei" function in alsa-lib. This function is used to transfer audio sample from user space to kernel space. It will be called many times. This issue maybe happened when calling this function at the first time. Or it happened at the second/third time. static snd_pcm_sframes_t snd_pcm_hw_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size) { printf("writei++\n"); /*my log: this log is printed out*/ err = ioctl(fd, SNDRV_PCM_IOCTL_WRITEI_FRAMES, &xferi); printf("writei--, err=0x%x\n", err); /*my log: this log isn't printed out when issue happened*/ } 2. So the ioctl will trap into kernel function. static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) { case SNDRV_PCM_IOCTL_WRITEI_FRAMES32: printk("======snd_pcm_ioctl_compat11\n"); return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); /*I checked this function, and it is retuned with the correct value*/ } 3. Exception happens. And the log is as the following. writei++ [ 39.752267] 832 (aplay) ======snd_pcm_ioctl_compat++++++++ [ 39.760480] 832 (aplay) ======snd_pcm_ioctl_compat11 [ 39.767334] 832 (aplay) ========snd_pcm_ioctl_xferi_compat++++ [ 39.899134] 832 (aplay) ========snd_pcm_ioctl_xferi_compat------ [ 39.907413] 832 (aplay) Bad mode in Error handler detected, code 0xbf000000 [ 39.916944] 832 (aplay) CPU: 0 PID: 832 Comm: aplay Not tainted 3.10.0+ #64 [ 39.926508] 832 (aplay) task: ffffffc000861380 ti: ffffffc019ff8000 task.ti: ffffffc019ff8000 [ 39.937823] 832 (aplay) PC is at 0xf747baec [ 39.943600] 832 (aplay) LR is at 0x0 [ 39.948736] 832 (aplay) pc : [<00000000f747baec>] lr : [<0000000000000000>] pstate: 60000010 [ 39.959785] 832 (aplay) sp : ffffffc019ff9ff0 [ 39.965819] x29: 0000000000000000 x28: 0000000000000000 [ 39.973168] x27: 0000000000000000 x26: 0000000000000000 [ 39.980522] x25: 0000000000000000 x24: 0000000000000000 [ 39.987861] x23: 0000000000000000 x22: 0000000000000000 [ 39.995212] x21: 0000000000000000 x20: 0000000000000000 [ 40.002560] x19: 0000000000000000 x18: 0000000000000000 [ 40.009882] x17: 0000000000000000 x16: 0000000000000000 [ 40.017132] x15: 0000000000000000 x14: 00000000f764e7a0 [ 40.024415] x13: 00000000ffc06b88 x12: 000000000001e2cc [ 40.031706] x11: 00000000ffc06bc4 x10: 000000000001e32c [ 40.039035] x9 : 000000000001e31c x8 : 0000000000000000 [ 40.046346] x7 : 0000000000000036 x6 : 000000000001e298 [ 40.053629] x5 : 0000000000580830 x4 : 00000000f76feffc [ 40.060943] x3 : 00000000ffc06ba0 x2 : 00000000ffc06ba0 [ 40.068288] x1 : 00000000400c4150 x0 : 0000000000000000 [ 40.075529] 832 (aplay) [ 40.079571] 832 (aplay) Bad mode in Synchronous Abort handler detected, code 0x86000007 [ 40.090335] 832 (aplay) CPU: 0 PID: 832 Comm: aplay Not tainted 3.10.0+ #64 [ 40.099783] 832 (aplay) task: ffffffc000861380 ti: ffffffc019ff8000 task.ti: ffffffc019ff8000 [ 40.110928] 832 (aplay) PC is at 0x0 [ 40.116025] 832 (aplay) LR is at 0x0 [ 40.121211] 832 (aplay) pc : [<0000000000000000>] lr : [<0000000000000000>] pstate: 800003c5 [ 40.132337] 832 (aplay) sp : ffffffc019ff9ed0 [ 40.138387] x29: 0000000000000000 x28: 0000000000000000 [ 40.145718] x27: 0000000000000000 x26: 0000000000000000 [ 40.153007] x25: 0000000000000000 x24: 0000000000000000 [ 40.160335] x23: 0000000060000010 x22: 00000000f747baec [ 40.167745] x21: ffffffc019ff9ff0 x20: 0000000000000000 [ 40.175117] x19: 0000000000000000 x18: 0000000000000000 [ 40.182421] x17: 0000000000000000 x16: 0000000000000000 [ 40.189693] x15: 0000000000000002 x14: 0000000000000082 [ 40.197060] x13: 0000000000000000 x12: 0000000000002090 [ 40.204380] x11: ffffffc000fb73f8 x10: 0000000000000030 [ 40.211699] x9 : ffffffc019ff9c60 x8 : ffffffc000590298 [ 40.219046] x7 : 0000000000000003 x6 : 0000000000000261 [ 40.226390] x5 : 0050000100000000 x4 : 0000000000000000 [ 40.233682] x3 : 0000000000000001 x2 : 0000000000000001 [ 40.241037] x1 : ffffffc019ff9de0 x0 : 0000000000000000 [ 40.248277] 832 (aplay) [ 40.252134] 832 (aplay) Internal error: Oops - bad mode: 0 [#1] PREEMPT [ 40.261235] 832 (aplay) CPU: 0 PID: 832 Comm: aplay Not tainted 3.10.0+ #64 [ 40.270649] 832 (aplay) task: ffffffc000861380 ti: ffffffc019ff8000 task.ti: ffffffc019ff8000 [ 40.281834] 832 (aplay) PC is at 0x0 [ 40.286856] 832 (aplay) LR is at 0x0 [ 40.292028] 832 (aplay) pc : [<0000000000000000>] lr : [<0000000000000000>] pstate: 800003c5 [ 40.303084] 832 (aplay) sp : ffffffc019ff9ed0 [ 40.309148] x29: 0000000000000000 x28: 0000000000000000 [ 40.316465] x27: 0000000000000000 x26: 0000000000000000 [ 40.323826] x25: 0000000000000000 x24: 0000000000000000 [ 40.331048] x23: 0000000060000010 x22: 00000000f747baec [ 40.338425] x21: ffffffc019ff9ff0 x20: 0000000000000000 [ 40.345726] x19: 0000000000000000 x18: 0000000000000000 [ 40.353023] x17: 0000000000000000 x16: 0000000000000000 [ 40.360327] x15: 0000000000000002 x14: 0000000000000082 [ 40.367670] x13: 0000000000000000 x12: 0000000000002090 [ 40.375078] x11: ffffffc000fb73f8 x10: 0000000000000030 [ 40.382440] x9 : ffffffc019ff9c60 x8 : ffffffc000590298 [ 40.389725] x7 : 0000000000000003 x6 : 0000000000000261 [ 40.396999] x5 : 0050000100000000 x4 : 0000000000000000 [ 40.404289] x3 : 0000000000000001 x2 : 0000000000000001 [ 40.411597] x1 : ffffffc019ff9de0 x0 : 0000000000000000 [ 40.418853] 832 (aplay) [ 40.422720] 832 (aplay) Process aplay (pid: 832, stack limit = 0xffffffc019ff8058) [ 40.432872] 832 (aplay) Stack: (0xffffffc019ff9ed0 to 0xffffffc019ffa000) [ 40.442304] 832 (aplay) 9ec0: 00000000 00000000 400c4150 00000000 [ 40.454976] 832 (aplay) 9ee0: ffc06ba0 00000000 ffc06ba0 00000000 f76feffc 00000000 00580830 00000000 [ 40.467667] 832 (aplay) 9f00: 0001e298 00000000 00000036 00000000 00000000 00000000 0001e31c 00000000 [ 40.480310] 832 (aplay) 9f20: 0001e32c 00000000 ffc06bc4 00000000 0001e2cc 00000000 ffc06b88 00000000 [ 40.492832] 832 (aplay) 9f40: f764e7a0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 40.505377] 832 (aplay) 9f60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 40.517829] 832 (aplay) 9f80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 40.530276] 832 (aplay) 9fa0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 40.542804] 832 (aplay) 9fc0: 00000000 00000000 19ff9ff0 ffffffc0 f747baec 00000000 60000010 00000000 [ 40.555294] 832 (aplay) 9fe0: 00000004 00000000 00000036 00000000 00000000 00000000 00000000 00000000 [ 40.567276] 832 (aplay) Call trace: [ 40.572258] 832 (aplay) Code: bad PC value [ 40.578899] 832 (aplay) ---[ end trace 329143aae073dffd ]--- Segmentation fault [\u@\h: \W]\# BR nhcao

10 years, 5 months

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linaro-dev November 2013