linaro-dev May 2013

linaro-dev@lists.linaro.org

70 participants
66 discussions

by Viresh Kumar

Hi Guys, V3 [1] of latest upstream effort for big LITTLE Architecture is ready for release. It is based of 3.10-rc1. Updates: ------- - Stats: Total distinct patches: 28 - New branch: master-wq-migration-v5 (Queued for 3.11) - New versions of branches: upstream-config-fragments upstream-runnable-load-avg-in-load-balance-v5 upstream-sched-pack-small-tasks-v4-fixed-v3.10-rc1 upstream-sched-use-LB_MIN-feature-v2-v3.10-rc1 upstream-task-placement-on-mixed-cpu-power-systems-v1 @Andrey: You don't need to pull this one :) -- viresh [1]: https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/hea…

11 years, 7 months

Re: [PATCH 00/16] Support for per policy instance of Interactive governor

by Viresh Kumar

On 16 May 2013 14:58, Viresh Kumar <viresh.kumar(a)linaro.org> wrote: > Hi Todd and others, > > If we have a multi-package system, where we have multiple instances of struct > policy (per package), currently we can't have multiple instances of same > governor. i.e. We can't have multiple instances of Interactive governor for > multiple packages. > > This is a bottleneck for multicluster system, where we want different packages > to use Interactive governor, but with different tunables. > > ---------x------------x--------- > > Recently, I have upstreamed this support in 3.10-rc1 for cpufreq core, Ondemand > and Conservative governor. Now is an attempt for Interactive Governor. > > I didn't had any clue on what kernel to rebase my patches over as I couldn't > find a 3.10-rc based branch in your tree and so based it on > experimental/android-3.9. > > So, this is what this patchset does: > - Backports some important patches from v3.10-rc1/2 to v3.9: First 8 patches > - Added few more supportive patches which might go in rc3: Next 4 patches > - Finally updated Interactive governor: Last 4 patches Hi John, We need to push some part of this patchset to coming release of linux-linaro too. And probably you are the best guy for doing this. Right? So, this is what you need to do: - Fetch latest Interactive governor patches from AOSP, probably 5 patches only. - Hopefully you will rebase over 3.10-rc2 ? - Then you can pick last 8 patches from this patchset.. Let me know it is fine or not. -- viresh

11 years, 7 months

[RFC PATCH 0/6] ARM: cpuhotplug: move generic functions to core

by Sanjay Singh Rawat

Various SoCs with arm processors define their own platform hotplug related functions. These functions can be defined as part of the core cpu hotplug functions, this will avoid the duplication. This patchset is intended to address this issue. This patchset covers arm-Cortex-A9. Not having h/w, the patch is not tested. Sanjay Singh Rawat (6): ARM: cpuhotplug: add common hotplug related functions ARM: imx: use the core cpu hotplug functions ARM: RealView: use the core cpu hotplug functions ARM: spear: use the core cpu hotplug functions ARM: vexpress: use the core cpu hotplug functions ARM: EXYNOS: use the core cpu hotplug functions arch/arm/include/asm/hotplug.h | 19 +++++++++++ arch/arm/kernel/Makefile | 1 + arch/arm/kernel/cpuhotplug.c | 64 ++++++++++++++++++++++++++++++++++++++ arch/arm/mach-exynos/hotplug.c | 40 ++---------------------- arch/arm/mach-imx/hotplug.c | 22 +------------ arch/arm/mach-realview/hotplug.c | 37 +--------------------- arch/arm/mach-spear/hotplug.c | 37 +--------------------- arch/arm/mach-vexpress/hotplug.c | 38 +--------------------- 8 files changed, 90 insertions(+), 168 deletions(-) create mode 100644 arch/arm/include/asm/hotplug.h create mode 100644 arch/arm/kernel/cpuhotplug.c -- 1.7.9.5

11 years, 7 months

big.LITTLE MP Scheduler test summary week-20

by Naresh Kamboju

Hi, Week-20 test report big.LITTLE MP : Here is test result summary for big.LITTLE MP Scheduler test on TC2 platform with Android image sched_tests.git No of Test Cases Tests Run Tests Pass Tests Fail Absolute pass rate (%) Failure Analysis/Comments Regression 20 19 19 0 100 % mpbasicsuite 14 10 10 0 100 % mpcoresuite 10 6 6 0 100 % mpextendedsuite 20 10 7 3 70 % mploadbalance 2 2 2 0 100 % Results are same as week-19 Android build: https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-mp/… Linux kernel: Linux version 3.9.1-00199-g6428ef6 (jenkins-build@ip-10-38-159-159) (gcc version 4.7.3 20130328 (prerelease) (Linaro GCC 4.7-2013.04) ) #1 SMP Thu May 16 04:53:30 UTC 2013 Results spread sheet: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0Ai9ggMs8bsGJdER3a… Best regards Naresh Kamboju

11 years, 7 months

big.LITTLE MP status May 14, 2013

by Serge Broslavsky

https://wiki.linaro.org/projects/big.LITTLE.MP Work Items for functional completion: https://wiki.linaro.org/projects/big.LITTLE.MP/WorkItems Roadmap Cards: Epic big.LITTLE MP card - http://cards.linaro.org/browse/CARD-190 The card is being reworked to split the work that is completed and the ongoing/to be done one. Proposal to be presented to TSC. Main Project page: https://launchpad.net/linaro-big-little-system Development ============ 1. big.LITTLE IKS Current 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 2. big.LITTLE MP There are two branches, which are functionally equivalent - they tweak the scheduler to select the right processes to move to the A15 and try to decrease power consumption while maintaining performance. * A Reference (stable) big.LITTLE MP patchset (merged with linux-linaro): https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/hea… Recommended to be used for testing. Expecting few bugfixes to be integrated for this cycle. * 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… Being worked on in order to achieve the performance/power numbers of the reference one. * Documentation: Code flow is already covered by several LWN articles. See https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/ in the Articles section. We will provide a tuning guide once we have reached agreement upstream. * Automated benchmarking code is ready: - A python script to download LAVA bundle and extract results and populate results on to given Google spreadsheet was created. - Discussions are still going on, but it’s very close to completion. Blueprint Updates ------------------ * https://blueprints.launchpad.net/linaro-big-little-system/+spec/big-little-… Ongoing work. * https://blueprints.launchpad.net/linaro-big-little-system/+spec/small-task-… - Results from an 80-core machine received, analyzing. - New version based on last comments (update more often) is being prepared. * https://blueprints.launchpad.net/linaro-big-little-system/+spec/cpu-hot-plu… - Switch to Python for scripting to support floating point calculations. - Discussions ongoing on the target latency value for the test (as the latency depends on the load). * https://blueprints.launchpad.net/linaro-big-little-system/+spec/sched-coope… - Long-lasting BP (6+ month to get something), no updates. QA == * https://blueprints.launchpad.net/linaro-qa/+spec/prepare-iks-testing-code-t… - Inprogress. - Need to be tested on Samsung board. big.LITTLE MP LAVA Dashboard http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-and… Testing (week 19): 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 6 0 100 % mpextendedsuite 20 10 7 3 70 % mploadbalance 2 2 2 0 100 % http://lists.linaro.org/pipermail/linaro-dev/2013-May/015923.html Bugs: https://bugs.launchpad.net/linaro-big-little-system/+bugs?field.tag=bl-mp Highlight: Bug 1166246 - Lockup on post 3.9 IKS kernel - bisected the problem to a single patch, investigating. - takes about 20 hours to reproduce. - setting up a dedicated board for long term testing. -- 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, 7 months

(review.)android.git.linaro.org has moved!

by Philip Colmer

I'm pleased to announce that the migration of the Android git server from Canonical to EC2 has been successfully completed. My thanks to Milo for his significant help with this endeavour. If you don't sign in to review.android.git.linaro.org, you can ignore the rest of this email. ***** Please read carefully! ***** As explained previously, you will need to log in with your Launchpad OpenID and then associated your identity with your Linaro Login OpenID if you want to keep the same account on the server at the end of the month when we turn off Launchpad OpenID authentication. Here are the steps you need to take: 1. Go to https://login.linaro.org:8443/openidserver. If you are asked to log in, please enter your EMAIL ADDRESS and your Linaro Login password. 2. The web page should now display a URL of the format https://login.linaro.org:8443/openidserver/users/<your email address>. Make a note of that, please. 3. Go to http://review.android.git.linaro.org/. Sign in with your Launchpad ID. (https://launchpad.net/~<launchpad ID>) 4. When you have signed in, click on the "Settings" link in the top right corner of the web page. 5. Click on the Identities link on the left hand side of the web page. 6. Click on "Link Another Identity". 7. Enter the URL you noted from step 2 and click on "Link Identity". 8. If your web browser session from step 2 has expired, you will be asked to log in again - enter the same information you entered at step 1. 9. If your web browser session has not expired, or once you have logged in, you will see a web page with the title "OpenID Verification". On the right hand side, click on Allow Always. The above steps only need to be done once, and needs to be done BEFORE THE END OF MAY! If you don't follow these steps by then, you will end up with a new account when you next sign in on the server. Between now and the end of May, you will need to paste your Linaro Login OpenID URL so you may want to keep a copy of that safe somewhere. After May, we will reconfigure the server so that *only* Linaro Login OpenID is supported, and clicking on "Sign In" will automatically authenticate you with that service. If you have any problems signing in to review.android.git.linaro.org, please send an email to its(a)linaro.org with as many details as possible. Thanks. Regards Philip

11 years, 7 months

[GIT PULL] big LITTLE MP - v17

by Viresh Kumar

Hi Andrey, big LITTLE MP v17 is ready for you to pull. Updates: ------- - Rebased over 3.10-rc1 - Stats: Total distinct patches: 41 - New Patches: - master-wq-migration-v5: 5 (Already Applied for 3.11 by Tejun Heo). This is currently disabled by default and need an update in config fragment. @Liviu/Steve: Can you please let us know if we can enable it? - master-task-placement-v2: 2 from Chris Redpath - master-task-placement-v2-sysfs: 1 from Chris Redpath -----------------x-------------------x-------------------- The following changes since commit f722406faae2d073cc1d01063d1123c35425939e: Linux 3.10-rc1 (2013-05-11 17:14:08 -0700) are available in the git repository at: git://git.linaro.org/arm/big.LITTLE/mp.git big-LITTLE-MP-master-v17 for you to fetch changes up to da143bac9131d9eb5bdcd1668a9f0c60304a9632: Merge branches 'master-arm-multi_pmu_v2', 'master-config-fragments', 'master-hw-bkpt-fix', 'master-misc-patches', 'master-task-placement-v2-sysfs' and 'master-wq-migration-v5' into big-LITTLE-MP-master-v17 (2013-05-17 09:58:56 +0530) ---------------------------------------------------------------- Chris Redpath (5): sched: Do not ignore grouped tasks during HMP forced migration. sched: Ignore offline CPUs in HMP migration & load stats ARM: Experimental Frequency-Invariant Load Scaling Patch ARM: Fix build breakage when big.LITTLE.conf is not used. sched: cfs.nr_running does not contain the intended metric Jon Medhurst (1): ARM: sched: Avoid empty 'slow' HMP domain Liviu Dudau (1): linaro/configs: big-LITTLE-MP: Enable the new tunable sysfs interface by default. Lokesh Vutla (1): ARM: hw_breakpoint: Enable debug powerdown only if system supports 'has_ossr' Lorenzo Pieralisi (1): ARM: kernel: provide cluster to logical cpu mask mapping API Morten Rasmussen (14): sched: entity load-tracking load_avg_ratio sched: Task placement for heterogeneous systems based on task load-tracking sched: Forced task migration on heterogeneous systems sched: Introduce priority-based task migration filter ARM: Add HMP scheduling support for ARM architecture ARM: sched: Use device-tree to provide fast/slow CPU list for HMP ARM: sched: Setup SCHED_HMP domains sched: Add ftrace events for entity load-tracking sched: Add HMP task migration ftrace event sched: SCHED_HMP multi-domain task migration control sched: Enable HMP priority filter by default sched: Only down migrate low priority tasks if allowed by affinity mask linaro/configs: Enable HMP priority filter by default sched: Basic global balancing support for HMP Olivier Cozette (1): ARM: Change load tracking scale using sysfs Paul Turner (1): sched: implement usage tracking Sudeep KarkadaNagesha (7): ARM: perf: replace global CPU PMU pointer with per-cpu pointers ARM: perf: register CPU PMUs with idr types ARM: perf: set cpu affinity to support multiple PMUs ARM: perf: set cpu affinity for the irqs correctly ARM: perf: remove spaces in CPU PMU names ARM: perf: save/restore pmu registers in pm notifier sched: fix arch_get_fast_and_slow_cpus to get logical cpumask correctly Thomas Gleixner (1): genirq: Add default affinity mask command line option Viresh Kumar (9): workqueues: Introduce new flag WQ_POWER_EFFICIENT for power oriented workqueues workqueue: Add system wide power_efficient workqueues PHYLIB: queue work on system_power_efficient_wq block: queue work on power efficient wq fbcon: queue work on power efficient wq configs: Add config fragments for big LITTLE MP linaro/configs: Update big LITTLE MP fragment for task placement work config-frag/big-LITTLE: Use device-tree to provide fast/slow CPU list for HMP Merge branches 'master-arm-multi_pmu_v2', 'master-config-fragments', 'master-hw-bkpt-fix', 'master-misc-patches', 'master-task-placement-v2-sysfs' and 'master-wq-migration-v5' into big-LITTLE-MP-master-v17 Documentation/devicetree/bindings/arm/pmu.txt | 3 + Documentation/kernel-parameters.txt | 24 + arch/arm/Kconfig | 85 ++ arch/arm/include/asm/pmu.h | 12 + arch/arm/include/asm/topology.h | 34 + arch/arm/kernel/hw_breakpoint.c | 3 +- arch/arm/kernel/perf_event.c | 19 + arch/arm/kernel/perf_event_cpu.c | 117 ++- arch/arm/kernel/perf_event_v7.c | 57 +- arch/arm/kernel/topology.c | 134 ++++ block/blk-core.c | 3 +- block/blk-ioc.c | 3 +- block/genhd.c | 12 +- drivers/net/phy/phy.c | 9 +- drivers/video/console/fbcon.c | 2 +- include/linux/sched.h | 13 + include/linux/workqueue.h | 35 + include/trace/events/sched.h | 153 ++++ kernel/irq/irqdesc.c | 21 +- kernel/power/Kconfig | 20 + kernel/sched/core.c | 4 + kernel/sched/debug.c | 3 + kernel/sched/fair.c | 1065 ++++++++++++++++++++++++- kernel/sched/sched.h | 13 +- kernel/workqueue.c | 26 +- linaro/configs/big-LITTLE-MP.conf | 13 + 26 files changed, 1823 insertions(+), 60 deletions(-) create mode 100644 linaro/configs/big-LITTLE-MP.conf

11 years, 7 months

Re: [PATCH 0/3] Miscellaneous bug fixes for HMP Reference Patches

by Viresh Kumar

You missed "lists." in linaro-dev address. On 16 May 2013 22:17, Chris Redpath <chris.redpath(a)arm.com> wrote: > Hi Viresh, this patch set contains 3 fixed for issues I've seen recently > in the HMP reference patch set. Please would you be able to take them > and make a new v17 branch :) > > These are rebased onto the v16 branch. Let me know if I have done something stupid. > Chris Redpath (3): > sched: Do not ignore grouped tasks during HMP forced migration. > sched: Ignore offline CPUs in HMP migration & load stats These two applied to master-task-placement-v2 > sched: cfs.nr_running does not contain the intended metric And this one applied to master-task-placement-v2-sysfs ... Also, this is how I expect patches to come.. Don't rebase them directly to master-v* branch as I can't apply them over it. I create a single merge with all the independent branches in. So, it would be better if you tell me if you need a separate branch for your patches or you want me to apply them to an older one. This way we can keep our tree clean. All Applied now. Thanks. -- viresh

11 years, 7 months

Reminder: (review.)android.git.linaro.org is moving today!

by Philip Colmer

This is a brief reminder that (review.)android.git.linaro.org will be unavailable from 2pm GMT+1 today while the Infrastructure and IT teams finish the work required to move the server from Canonical to Amazon EC2. There will be a further email sent after the work is completed. Regards Philip

11 years, 7 months

Re: [Linaro-QA-Service] [linux-next] Snowball build broken

by Naresh Kamboju

Ping. On 17 April 2013 21:16, Linus Walleij <linus.walleij(a)linaro.org> wrote: > On Tue, Apr 16, 2013 at 3:48 PM, Naresh Kamboju > <naresh.kamboju(a)linaro.org> wrote: >> On 12 April 2013 04:07, Linus Walleij <linus.walleij(a)linaro.org> wrote: >>> Hey it works. Didn't see this before I fixed it tho :-) >>> http://marc.info/?l=linux-kernel&m=136567139910888&w=2 >> >> This commit not yet been merged in to linux-next "next-20130416". >> Due to this reason still snowball build fails at above error. > > That is outside of my jurisdiction, only the MFD maintainer Samuel > Ortiz can merge this patch. > > Yours, > Linus Walleij

11 years, 7 months

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linaro-dev May 2013