linaro-dev June 2013

linaro-dev@lists.linaro.org

57 participants
67 discussions

[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

[Query]: Can people post to this mailing list without subscription?

by Viresh Kumar

Hi Guys, I really don't know whom to direct this mail to and hence the wide spread. Problem: When we send a mail to kernel mailing lists with linaro-dev or linaro-kernel in cc, and we get replies to those mails, sometimes the mails from outside people doesn't reach us back on linaro mailing lists. And i hope the reason behind that is those people aren't subscribed to these lists. For me it makes some sense to allow anyone to send mails to this list. Can that request be considered? I believe the idea behind blocking such use is for protecting against spam mails, but these mails/replies are really important and we certainly need them delivered to us. One solution (don't know if its possible) would be to monitor mails from non-subscribers and few people from Linaro can permit them on daily/hourly basis, so that we don't get any spam mails, but that would be a burden. -- viresh

11 years, 3 months

[ANN] android-build.linaro.org upgrade to Linaro Login Service - complete

by Paul Sokolovsky

Hello, After couple of iterations, android-build.linaro.org was updated to authenticate against Linaro Login system. Please use your login.linaro.org username (with @linaro.org suffix) and password to login from now on. Personal jobs were also renamed to have firstname.lastname prefix instead of Launchpad username. If you cannot see your jobs, please contact me to check their state. Below is interim progress report for completeness. Thanks, Paul Begin forwarded message: Date: Wed, 26 Jun 2013 22:43:07 +0300 From: Paul Sokolovsky <Paul.Sokolovsky(a)linaro.org> To: Paul Sokolovsky <Paul.Sokolovsky(a)linaro.org> Cc: linaro-android <linaro-android(a)lists.linaro.org>, Infrastructure <infrastructure(a)linaro.org>, Linaro Validation <linaro-validation(a)lists.linaro.org>, Philip Colmer <philip.colmer(a)linaro.org> Subject: Re: [ANN] android-build.linaro.org upgrade to Linaro Login Service Hello, On Wed, 26 Jun 2013 15:46:50 +0300 Paul Sokolovsky <Paul.Sokolovsky(a)linaro.org> wrote: > Hello, > > With Android releases out, I'd like to proceed with switchover of > Android Build frontend authenticaton to Linaro Login. Estimated > downtime is 2hrs. To minimize impact, I'm scheduling this for later > evening UTC (around 8pm UTC). Let me know if you need access to a-b > at that time (otherwise, upgrade is OKed by Vishal). Upgrade went well, except that now it's not possible to create personal builds. That's because login username is used to form created job name, and with Linaro Login, username is first.last(a)linaro.org - that's not valid as part of job name, and besides that, it's too long. Even if I adhocly remapped it to first-last, it's still too long, and still would required boring renaming of existing jobs. Atlassian Crowd supports login aliases, Philip mentioned that it's possible to create one, but I skipped doing that just for me, hoping that it would be offered for all folks as part of git migration or something, but that didn't happen. Well, I guess it's time to raise that request now - going submit ITS ticket for this. -- 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 -- 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

11 years, 5 months

config fragments clean up

by Fathi Boudra

Hi, There's a few warning that nobody noticed or cared until now: [...] Value requested for CONFIG_OABI_COMPAT not in final .config Requested value: # CONFIG_OABI_COMPAT is not set Actual value: Value requested for CONFIG_MTD_CHAR not in final .config Requested value: CONFIG_MTD_CHAR=y Actual value: Value requested for CONFIG_ENABLE_DEFAULT_TRACERS not in final .config Requested value: CONFIG_ENABLE_DEFAULT_TRACERS=y Actual value: [...] MTD_CHAR doesn't exist anymore. ENABLE_DEFAULT_TRACERS depends on !GENERIC_TRACER Is there any objection to drop both options from linaro-base.conf? I'm not sure what to do with OABI_COMPAT. Cheers, -- Fathi Boudra

11 years, 5 months

review.android.git.linaro.org

by Philip Colmer

The maintenance on this server has been completed. gerrit has been upgraded so it looks a little bit different now. Also, the sign in process now only works with Linaro Login so clicking on the "sign in" link no longer requires you to paste an OpenID URL. If you are not authenticated with Crowd when you click on the "sign in" link, you will be redirected to Crowd where you need to enter your *email address* and your Linaro Login password. If you have any problems with authentication, please email its(a)linaro.org. Regards Philip

11 years, 5 months

[ANN] ci.linaro.org security realm and authorization strategy

by Fathi Boudra

Hi, ci.linaro.org has switched the security realm from Launchpad OpenID to Crowd SSO. In practice, it means that authentication is using your regular login/password from login.linaro.org service. In addition, the project authorization strategy has been switched to project-based matrix authorization strategy. Those changes allows more permissions granularity at the project/job level. It is now possible to create private/restricted jobs or allow anonymous users to read your job configuration if you want. Cheers, -- Fathi Boudra Builds and Baselines Manager | Release Manager Linaro.org | Open source software for ARM SoCs

11 years, 5 months

big.LITTLE status June 28, 2013

by Serge Broslavsky

Main Project page: https://launchpad.net/linaro-big-little-system Development ============ 1. big.LITTLE IKS IKS snapshot: git://git.linaro.org/landing-teams/working/arm/kernel.git More information: http://lists.linaro.org/pipermail/linaro-dev/2013-May/015882.html Also two latest Linaro releases (13.05, 13.06) contain big.LITTLE release with IKS code integrated. By default MP is used (IKS is off). To enable IKS: echo 1 > /sys/kernel/bL_switcher/active No changes since last week. 2. big.LITTLE MP * ARM Beta patch set integrated into Linux-Linaro monthly and LSK kernel series releases: https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/hea… Approved by ARM for use in member products. No changes since last week. * And an upstream (work in progress) big.LITTLE MP patchset: https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/hea… The existing code in this branch was effectively rendered obsolete by the discussion ongoing upstream. ARM developers have proposed a solution which seems to be getting some traction. The LWN post from June 19th provides some insights into the current discussions: https://lwn.net/Articles/554956/ * Documentation: See Articles section in https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/. Code flow is covered in LWN articles. * Automated benchmarking: - Fully automated benchmark result uploading is implemented. QA == Bugs: https://bugs.launchpad.net/linaro-big-little-system/+bugs 1. big.LITTLE IKS big.LITTLE IKS Lava Dashboard (members-only, requires login): http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-and… Testing (week 26 - Linaro 13.06 release): name #Cases #Run Pass Fail Absolute pass rate -------------- ------ ---- ---- ---- ------------------ IKS test suite 30 30 26 4 87% [1] --- [1] Perf broken on linux-linaro 3.10.x kernel https://bugs.launchpad.net/linaro-big-little-system/+bug/1183821 - existing perf code is at the end of it's lifecycle. - a rewrite is ongoing. - not fixed in Linaro 13.6 release. 2. big.LITTLE MP big.LITTLE MP LAVA Dashboard (members-only, requires login): http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-and… Testing (week 26 - Linaro 13.06 release): sched_tests.git #Cases #Run Pass Fail Absolute pass rate -------------- ------ ---- ---- ---- ------------------ Regression 20 19 19 0 100 % mpbasicsuite 14 10 10 0 100 % mpcoresuite 10 6 5 1 84 % [1] mpextendedsuite 20 10 7 3 70 % [2] mploadbalance 2 2 2 0 100 % --- [1] scheduler test: core_test_scn04.1 failed https://bugs.launchpad.net/linaro-big-little-system/+bug/1188655 - A test case bug - fixed by ARM, awaiting the patch. [2] scheduler test: extd_test_scn01.3a, extd_test_scn03.2a & extd_test_scn03.3a failed on linux-linaro https://bugs.launchpad.net/linaro-big-little-system/+bug/1183769 - The failure is due to the global load balance code defect where it fails to migrate busy tasks if target cores already have other tasks pinned. -- Best Regards, Serge Broslavsky <serge.broslavsky(a)linaro.org> Project Manager, Linaro M: +37129426328 IRC: ototo Skype: serge.broslavsky http://linaro.org | Open source software for ARM SoCs

11 years, 5 months

[meta-linaro-toolchain][PATCH] gcc-linaro-4.7: Update gcc BINV following change in gcc-linaro release

by Andre McCurdy

The recent dylan meta-linaro-toolchain/recipes-devtools/gcc/gcc-linaro-4.7.inc update from 13.04 to 13.06-1 seems to cause builds to break with errors something like: | cp: cannot create regular file '/work/rdk/build-dylan-qemuarm/tmp/work/armv5te-rdk-linux-gnueabi/gcc-cross-initial/linaro-4.7-r2013.06-1/image/work/rdk/build-dylan-qemuarm/tmp/sysroots/x86_64-linux/usr/lib/armv5te-rdk-linux-gnueabi.gcc-cross-initial/gcc/arm-rdk-linux-gnueabi/4.7.3/include-fixed/limits.h': No such file or directory | ERROR: Function failed: do_install (see /work/rdk/build-dylan-qemuarm/tmp/work/armv5te-rdk-linux-gnueabi/gcc-cross-initial/linaro-4.7-r2013.06-1/temp/log.do_install.11946 for further information) Fix by updating BINV from 4.7.3 to 4.7.4 to match the change in gcc versions. Signed-off-by: Andre McCurdy <andre.mccurdy(a)entropic.com> --- meta-linaro-toolchain/recipes-devtools/gcc/gcc-linaro-4.7.inc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/meta-linaro-toolchain/recipes-devtools/gcc/gcc-linaro-4.7.inc b/meta-linaro-toolchain/recipes-devtools/gcc/gcc-linaro-4.7.inc index b0bc7be..a5452be 100644 --- a/meta-linaro-toolchain/recipes-devtools/gcc/gcc-linaro-4.7.inc +++ b/meta-linaro-toolchain/recipes-devtools/gcc/gcc-linaro-4.7.inc @@ -4,7 +4,7 @@ require gcc-linaro-common-4.7.inc MMYY = "13.06" RELEASE = "20${MMYY}-1" PR = "r${RELEASE}" -BINV = "4.7.3" +BINV = "4.7.4" FILESPATH = "${@base_set_filespath([ '${FILE_DIRNAME}/gcc-${PV}' ], d)}" -- 1.8.1.2 This e-mail and documents attached to this e-mail contain proprietary and/or confidential information of Entropic Communications. Such information is subject to copyright belonging to Entropic Communications. This e-mail is intended solely for the use of the individuals or entities to which it is addressed. If you are not the intended recipient of this e-mail, any distribution, copying or use of the contents of this e-mail and attachments is strictly prohibited and may be unlawful.

11 years, 5 months

CTS test result on Lava Dashboard For Linaro Android TI-Panda Builds

by Soumya Basak

as observed from Lava Dashboard daily builds of linux- Linaro-android for TI-Panda builds: http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-and… the defined test cases CTS test results: 2749/2942 Passes. from the cts test result bundle observed: http://validation.linaro.org/lava-server/dashboard/streams/private/team/lin… please refer to the logcat and stdout.log for details. Thank You! Best Regards Soumya Basak.

11 years, 5 months

Test Result summary of 13.06 release for Linaro android Jellybean 4.2.2

by Soumya Basak

Linaro-android 13.06 Release (Calendar Week 26 2013): Here is the test result summary for Linaro Android Jellybean 4.2.2 on following boards. [1] TI-Panda 4460; [2] TI-Panda 4430; [3] ST Ericsson Snowball. [4] ARM Versatile Express A9; [5] Galaxy Nexus; [6] Samsung Arndale; [1] TI-Panda 4460 with Linaro Linaro Android Jellybean 4.2.2 (Column: AQ) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… toolchain version is upgraded to 4.8-2013.06-0~dev. Please refer to the result spreadsheet for details. [2] TI-Panda 4460 with Linaro Linaro Android Jellybean 4.2.2 (Column: AQ) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… [3] ST-Erricsson Snowball with Linaro android Jellybean 4.2.2 (Column: AP) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadEF1N… toolchain version is upgraded to 4.7-2013.06-1 , please refer to the result spreadsheet for details. [4] ARM Versatile Express A9 with Linaro android Jellybean 4.2.2 (Column: AQ) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… toolchain version is: 4.8-2013.06-0~dev, kernel version: 3.10.0-rc6-00192-gb660da8, Please refer to the result spreadsheet for details. [5] Galaxy_nexus with linaro android Jellybean 4.2.2 (Column: C) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdFhhe… [6] Samsung Arndale with Linaro android Jellybean 4.2 (Column: C) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… toolchain version : 4.8-2013.06-0~dev. please refer to the result spreadsheet for details. Thank You! Best Regards Soumya Basak.

11 years, 5 months

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linaro-dev June 2013