linaro-dev March 2014

linaro-dev@lists.linaro.org

32 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

TianoCore KVM Port: Status Update

by Michael Casadevall

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 As I've made a fair bit of headway since LinaroConnect, I wanted to drop a line on my current progress with porting TianoCore to KVM Summary (tl;dr version): KVM can start TianoCore, and boot all the way to shell, and access HDDs via VirtioBlk. We can start grub and successfully retrieve files from ext partitions, load a device tree, and start the kernel. The kernel runs through most of the EFI stub, but falls over during ExitBootServices() Long Version: So, after much blood sweat and tears, we're finally at the point of trying to actually start a kernel, though this (for the moment) remains an elusive goal. The current problem is that once we call EBS(), we get an exception from EFI with no Image information, which means the exception handler doesn't know where it came from. After several seconds, we get a second exception from within DxeCore, and then EFI falls over. Debugging EFI is difficult and error prone, combined with limited debug facilities from the gdb-stub in QEMU (no breakpoints), and no decent way to load all of EFI itself (you have to run add-symbol-file manually with the output of commands printed on the console; supposedly its possible to generate a giant GdbSyms.dll file to import in a single go, but I haven't succeeded at this). This is further complicated that it appears we're asserting somewhere in a driver, and short of adding printfs to *every* driver, its impossible to know which is asseting. Previous attempts to debug assets shows that EFI does "odd" things to the stack when we hit an exception, making walking it with GDB impossible. I need to figure out what madness EFI does with my SP so I can get the entire stack on an explosion, but this remains at best hopeful thinking. Further complicating things is that during EBS, my print debugging goes away. I might just cheat and roll a simple assembly function to bang out messages through serial without calling anything else. Ugly as sin, but this should let me get useful debug output through the EBS framework. Complicating matters is that I need to locate each and all EBS() event functions, which are spread *everywhere* in TianoCore, and then debug them each individually. I'm open to ideas on how best to accomplish this. On a larger scale, there are a couple of other bugs and odds and ends which currently affect us: * wfi doesn't work THis is probably the biggest w.r.t. to functionality that should work, but doesn't. The EFI event loop is built on checking the timer, then calling wfi to check the timer later. The problem here is we call wfi ... and UEFI never comes back despite events firing (I can put print code in the interrupt handler to confirm this). This may be related to the VGIC errors I get running kvm under foundation, but haven't taken the time to properly nail down the bug here. This was worked around by commenting out the wfi, turning event loop into a busy loop, but this has to be resolved before we can ever consider merging it * No RTC I looked through virt.c in KVM, and as best I can tell, I've got no RTC at all (no PL031). It also appears that the kernel can't get RTC as running a kernel gets me a 1970 clock. I'm not sure if this is by design or not, but it causes GetTime() to return EFI_ERROR, and I suspect may be one of the exceptions I'm getting avoid (Shell prints a ton of warnings that GetTime is busted). * No terminfo support (not ARM specific) EFI assumes its working against a real console or terminal. As such, it doesn't respect anything like termcap or such, and output gets jumbled due to incorrect escape sequencies and such. This isn't specific to ARM as I get identical behavior with OVMF running on stdio or over telnet. Backspace for instance requires me to type ^H into the console manually As we expect to have this usable remotely, we need to determine how to handle the terminal and escape sequences properly so we're not printing garbage to the screen. A "dumb" mode might just be the best way to handle this, but something like grub do display fancy graphics. Ideas welcome. If anyone wants to play with it, my code is on git, but requires a bit of setup to get running, and you need a patch to KVM to successfully start UEFI at the moment. Michael -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTNTJTAAoJEGKVRgSEnX1Qm2YH/jzWQjB/DPSHdv33hUlxVuIm j2AGElid7HM+3gp5U/ILdXvCyP9LFg8RATsvUa7bSHdwFZxRdAqYUWzm/Jxg6ZYV kyTzTDuPhbXp8koVLF14H/oGlpwnEH5rhzNa3UeRZTNYnNp3UMeZ1NXgGu9ziCfk hMGGteTMfV/6fGD6AETtlpD99KKwFiprD198QAil2rpVRi4WZBcgp7Y9/c/+cLfy sJD7p+zN8jBh9r9njpxh0o5rrQoG3N1NAemPGbSAc+qMMYCDOmjasGLwYiJuuMDy apRBM9+pbYsEgBGxM1z3XGywBJWBaLGzizk8vfPN2kN70/F7RW89X1rqG/95Ais= =OwC0 -----END PGP SIGNATURE-----

10 years, 1 month

[PATCH] idlestat: add timeout for the exec'ed command

by daniel.lezcano＠linaro.org

From: Daniel Lezcano <daniel.lezcano(a)linaro.org> Add a timeout for the specified command. The timeout option is shared with the -t option. When no command line has to be executed, the timeout becomes the duration of the acquisition, otherwise the command is executed during an amount of time and terminated if the timeout occur. Signed-off-by: Daniel Lezcano <daniel.lezcano(a)linaro.org> --- idlestat.c | 36 ++++++++++++++++++++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-) diff --git a/idlestat.c b/idlestat.c index 7ed9f85..d9ce30a 100644 --- a/idlestat.c +++ b/idlestat.c @@ -25,6 +25,7 @@ * */ #define _GNU_SOURCE +#include <errno.h> #include <getopt.h> #include <stdio.h> #include <stdlib.h> @@ -1126,6 +1127,14 @@ static int idlestat_wake_all(void) return 0; } +static volatile sig_atomic_t sigalrm = 0; + +static void sighandler(int sig) +{ + if (sig == SIGALRM) + sigalrm = 1; +} + static int execute(int argc, char *argv[], char *const envp[], struct idledebug_options *options) { @@ -1148,9 +1157,32 @@ static int execute(int argc, char *argv[], char *const envp[], } if (pid) { - waitpid(pid, &status, 0); - if (WIFEXITED(status) && !WEXITSTATUS(status)) + struct sigaction s = { + .sa_handler = sighandler, + .sa_flags = SA_RESETHAND, + }; + + sigaddset(&s.sa_mask, SIGALRM); + sigaction(SIGALRM, &s, NULL); + alarm(options->duration); + again: + if (waitpid(pid, &status, 0) < 0) { + if (errno != EINTR || !sigalrm) + goto again; + kill(pid, SIGTERM); + } + + if (WIFEXITED(status) && !WEXITSTATUS(status)) { + /* + * Cancel the timer in case the program + * finished before the timeout + */ + alarm(0); + return 0; + } + + if (WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM) return 0; } -- 1.7.9.5

10 years, 1 month

[PATCH] idlestat: run a command with idlestat

by daniel.lezcano＠linaro.org

From: Daniel Lezcano <daniel.lezcano(a)linaro.org> Add the support to run a command line with idlestat: ./idlestat -o out.dat -- /bin/sleep 3 Without the '-t' option, idlestat will blindly use the current buffer size which may not fit with the 'command' duration and lead to a buffer overflow. With the example, it would make sense to set the buffer size: ./idlestat -o out.dat -t 3 -- /bin/sleep 3 This is a workaround, until we find a way to set the buffer size automatically. Signed-off-by: Daniel Lezcano <daniel.lezcano(a)linaro.org> --- idlestat.c | 49 +++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 43 insertions(+), 6 deletions(-) diff --git a/idlestat.c b/idlestat.c index 53ca1c7..f0c6467 100644 --- a/idlestat.c +++ b/idlestat.c @@ -36,6 +36,7 @@ #include <sys/time.h> #include <sys/types.h> #include <sys/resource.h> +#include <sys/wait.h> #include <assert.h> #include "idlestat.h" @@ -112,6 +113,7 @@ static int display_states(struct cpuidle_cstates *cstates, (c->min_time == DBL_MAX ? 0. : c->min_time), c->max_time); } + if (pstates) { for (j = 0; j < pstates->max; j++) { struct cpufreq_pstate *p = &(pstates->pstate[j]); @@ -1022,7 +1024,7 @@ int getoptions(int argc, char *argv[], struct idledebug_options *options) return -1; } - return 0; + return optind; } static int idlestat_file_for_each_line(const char *path, void *data, @@ -1108,14 +1110,47 @@ static int idlestat_wake_all(void) return 0; } -int main(int argc, char *argv[]) +static int execute(int argc, char *argv[], char *const envp[], + struct idledebug_options *options) +{ + pid_t pid; + int status; + + /* Nothing to execute, just wait an amount of time */ + if (!argc) + return sleep(options->duration); + + pid = fork(); + if (pid < 0) { + perror("fork"); + return -1; + } + + if (pid == 0 && execve(argv[0], argv, envp)) { + perror("execv"); + exit(1); + } + + if (pid) { + waitpid(pid, &status, 0); + + if (WIFEXITED(status) && !WEXITSTATUS(status)) + return 0; + } + + return -1; +} + +int main(int argc, char *argv[], char *const envp[]) { struct cpuidle_datas *datas; struct cpuidle_datas *cluster; struct idledebug_options options; struct rusage rusage; + int args; - if (getoptions(argc, argv, &options)) + args = getoptions(argc, argv, &options); + if (args <= 0) return 1; /* We have to manipulate some files only accessible to root */ @@ -1128,7 +1163,7 @@ int main(int argc, char *argv[]) init_cpu_topo_info(); /* Acquisition time specified means we will get the traces */ - if (options.duration) { + if (options.duration || args < argc) { /* Read cpu topology info from sysfs */ read_sysfs_cpu_topo(); @@ -1151,14 +1186,16 @@ int main(int argc, char *argv[]) /* Start the recording */ if (idlestat_trace_enable(true)) return -1; + /* We want to prevent to begin the acquisition with a cpu in * idle state because we won't be able later to close the * state and to determine which state it was. */ if (idlestat_wake_all()) return -1; - /* Do nothing */ - sleep(options.duration); + /* Execute the command or wait a specified delay */ + if (execute(argc - args, &argv[args], envp, &options)) + return -1; /* Wake up all cpus again to account for last idle state */ if (idlestat_wake_all()) -- 1.7.9.5

10 years, 1 month

Test Result Summary of Linux Linaro Android 14.03 Release.

by Soumya Basak

Linaro Android 14.03 Release [Calender Week 13]: Here is the test result summary for Linux Linaro Android image on following boards: 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 + Linux Linaro Android Kitkat (Column: P): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 2. TI Panda 4430 + Linux Linaro Android Kitkat (Column: P): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 3. Samsung Arndale + Linux Linaro Android Kitkat (Column: N): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… 4. Galaxy Nexus + Linux Linaro Android Kitkat (Column: M): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdFhhe… 5. ARM Versatile Express A9 + Linux Linaro Android Kitkat (Column: P): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 6. ARM Versatile Express LSK TC2 + Linux Linaro Android Kitkat (Column: T): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 7. ARM Versatile Express TC2 + Linux Linaro Android Kitkat (Column: V): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… For consolidated Linaro Android test result spreadsheet, please visit this link below: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDZxQ… -- Thank You. Best Regards -Soumya Basak.

10 years, 1 month

Test Result Summary of Linux Linaro ubuntu 14.03 Release.

by Botao Sun

Linaro 14.03 Release (Calendar Week 13): Here is test result summary for Linux Linaro ubuntu Saucy image on following boards: 1) Samsung Arndale; 2) TI Panda 4430; 3) TI Panda 4460. 1. Samsung Arndale + Linux Linaro Saucy (Column AV): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… 2. TI Panda 4430 + Linux Linaro Saucy (Column BC): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… 3. TI Panda 4460 + Linux Linaro Saucy (Column BC): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… For consolidated test result spreadsheet, please visit this link below: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDdWZ… Thank you. Best Regards Botao Sun

10 years, 1 month

[GSoC-2014] Introducing Myself

by Varad Gautam

Hi. I am interested in participating in Google Summer of Code - 2014 with Linaro and working on two of the ideas from Ideas page [1]: AArch64 porting of Free Software Packages - I am amazed going through the details mentioned at [2] about the use of assembly in packages. I would like to discover more, and figure out where I could contribute. Port UEFI to Low-Cost Embedded Platform - Although I have not used a system with UEFI before, I want to know more about the low level interaction that occurs between the kernel and the hardware. Please help me get started and gain a better understanding of what implementing each of these ideas would involve. About me: I can program with C, Perl, Python, Processing and Shell Scripts. I built a game for the Intel Perceptual Computing Challenge-2013 [3] and have experience with development for the Beagleboard and Pandaboard. I am currently reading Greg K-H's Linux Device Drivers to figure out how drivers work. I am also learning the x86 assembly language. I have been an open source user for a long time, and have a commit integrated into GNOME's Anjuta IDE [4] I recently worked with Red Hat on testing the effectiveness of random number generators on a virtual machine with qemu.[5] I also have a fair know-how of git. [1] https://wiki.linaro.org/SummerOfCode2014/ProjectIdeas [2] https://wiki.linaro.org/LEG/Engineering/OPTIM/Assembly [3] http://varadgautam.wordpress.com/2013/09/26/bender-a-game-using-the-intel-p… [4] https://git.gnome.org/browse/anjuta/commit/?id=eb10532632014b59505c788ffad4… [5] http://varadgautam.wordpress.com/2013/12/17/dieharder-tests-on-a-qemu-vm-1-… Thanks. Varad

10 years, 1 month

[ANN] lci-build-tools (aka lp:linaro-ci) migrated to git

by Paul Sokolovsky

Hello, As final steps of migrating infrastructure/CI projects from bzr to git, lci-build-tools repository (having a shortcut of lp:linaro-ci) was migrated to https://git.linaro.org/ci/lci-build-tools.git . All jobs directly referencing it on https://ci.linaro.org were already updated. However, according to Fathi, there may be wrapper build scripts, hosted elsewhere, which may fetch lci-build-tools on their own. So, if you use/maintain such script, please update it to use git. It should be something like replacing: bzr branch lp:linaro-ci lci-build-tools with: git clone https://git.linaro.org/ci/lci-build-tools.git Please kindly update your scripts during next week. On March 21, bzr repository will be shutdown, in an effort to formally finish the migration, catch last usages of the old repository, and avoid future confusion. Let us know if you have concerns with the plan above. Thanks, Linaro Infrastructure team 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

10 years, 1 month

Test Result Summary of Linux Linaro Android Calender week 12, 2014

by Soumya Basak

Linaro Android (Calender Week 12): Here is the test result summary for Linux Linaro Android image on following boards: 1) TI Panda 4460; 2) TI Panda 4430; 3) Samsung Arndale; 4) ARM Versatile Express A9; 5) ARM Versatile Express LSK TC2; 1. TI Panda 4460 + Linux Linaro Android Kitkat (Column: O): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 2. TI Panda 4430 + Linux Linaro Android Kitkat (Column: O): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 3. Samsung Arndale + Linux Linaro Android Kitkat (Column: M): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… 4. ARM Versatile Express A9 + Linux Linaro Android Kitkat (Column: O): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 5. ARM Versatile Express LSK TC2 + Linux Linaro Android Kitkat (Column: S): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… Thank You. Best Regards Soumya Basak.

10 years, 1 month

Qemu beaglexm, no login prompt ttyO2

by Mateusz Kaczanowski

Hi, I'm struggling with this problem for days. I've compiled kernel using yocto for beagleboard xm. *After kernel is booted, no termial login prompt shows up :/* I suppose that the problem is related with moving to ttyO2 from ttyS0 u-boot commands: setenv bootcmd 'mmc init; fatload mmc 0:1 0x80300000 zImage.bin; bootz 0x80300000' setenv bootargs 'console=tty0 console=ttyO2,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait' qemu : /usr/local/bin/qemu-system-arm -M beaglexm -drive if=sd,cache=writeback,file=/dev/sdb -clock unix -serial stdio inittab line: O2:12345:respawn:/sbin/getty 115200 ttyO2 nothing shows up in tty0 or ttyO2 (except kernel info) Version of qemu: 1.7.0 It could be related to https://bugs.launchpad.net/qemu-linaro/+bug/714600

10 years, 1 month

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linaro-dev March 2014