linaro-dev

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4332 discussions

by Naresh Kamboju

Hi Kiran, Nice to see your Email. I request you to post same question and attached log in following list linaro-validation(a)lists.linaro.org and linaro-dev(a)lists.linaro.org. -Naresh On 21 March 2013 21:11, Kiran Vedere <kvedere(a)marvell.com> wrote: > Hi Naresh:**** > > ** ** > > Hope you doing well. If you remember we met at the Linaro Connect in > Hongkong. **** > > I happened to show you the kernel panic error with the 13.02 release and > you connected me with several folks at linaro who could be of help. I tried > to follow Nicolas Pitre’s suggestion of formatting the card and reloading > the images but I still see the error. You mentioned to me there is blogspot > or linaro forums where I post this issue. Could you please point me to > that? **** > > ** ** > > Additionally I attached the kernel panic log in case you can forward to > the person who validated the 13.02 release.**** > > ** ** > > Thank you.**** > > ** ** > > Regards,**** > > Kiran**** >

12 years, 7 months

Panda kernel update

by Christophe Lyon

Hi, Some time ago, to fix heat problems on our panda boards which building/validating GCC, I upgraded the kernel and activated the thermal features: I switched to 3.7.2. I used some of the instructions found in: https://wiki.linaro.org/Resources/HowTo/KernelDeploy The tests I performed afterwards look OK, but I have noticed that there is no longer any /dev/mmcblk0p1 so I am wondering how I will manage to upgrade next time? What am I missing? Thanks, Christophe.

12 years, 7 months

big.LITTLE MP status Mar 20, 2013

by David Zinman

https://wiki.linaro.org/projects/big.LITTLE.MP Work Items for functional completion: https://wiki.linaro.org/projects/big.LITTLE.MP/WorkItems Roadmap Cards: Improving HMP Linux scheduling - http://cards.linaro.org/browse/CARD-190 Blueprints and bugs are all now in a single Launchpad project for big.LITTLE: https://launchpad.net/linaro-big-little-system Development ============= Version 16 of big.LITTLE MP has been pulled: Updates: ------- - Rebased over 3.9-rc2 - Stats: Total distinct patches: 33 - Dropped Patches: - cpufreq-fixes-v3 branch, already upstreamed. - hw-bkp-v7.1-debug-v2 branch, already upstreamed, one new fix included though. http://lists.linaro.org/pipermail/linaro-dev/2013-March/015684.html Blueprint Update ----------------- * https://blueprints.launchpad.net/linaro-big-little-system/+spec/cpuidle-add… * Upstreamed, waiting for the TC2 drivers to be upstreamed * cpuidle - rework the refcounting mechanism : TODO: will not be done this month * https://blueprints.launchpad.net/linaro-big-little-system/+spec/sched-coope… * not started * scheduled for April, but probably unrealistic * ACTION: Expedite * https://blueprints.launchpad.net/linaro-big-little-system/+spec/small-task-… * will upstream for review this week * https://blueprints.launchpad.net/linaro-big-little-system/+spec/hotplug-per… * TBD QA === big.LITTLE MP LAVA Dashboard http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-and… Testing: # of Cases # Run Pass Fail Absolute pass rate Regression 20 19 19 0 100 mpbasicsuite 10 9 9 1 90 mpcoresuite 4 4 4 0 75 mpextendedsuite 6 6 4 2 66.7 mploadbalance 2 2 2 0 100 http://lists.linaro.org/pipermail/linaro-dev/2013-March/015673.html Bugs: https://bugs.launchpad.net/linaro-big-little-system/+bugs?field.tag=bl-mp -- David Zinman, Project Manager Linaro.org | Open source software for ARM SoCs

12 years, 7 months

[GIT PULL] big LITTLE MP - v16

by Viresh Kumar

Hi Andrey, Sorry for being late this time. Were waiting for Android tree to become available for doing testing. big LITTLE MP v15 is ready for you to pull. Updates: ------- - Rebased over 3.9-rc2 - Stats: Total distinct patches: 33 - Dropped Patches: - cpufreq-fixes-v3 branch, already upstreamed. - hw-bkp-v7.1-debug-v2 branch, already upstreamed, one new fix included though. -----------------x-------------------x-------------------- The following changes since commit f6161aa153581da4a3867a2d1a7caf4be19b6ec9: Linux 3.9-rc2 (2013-03-10 16:54:19 -0700) are available in the git repository at: git://git.linaro.org/arm/big.LITTLE/mp.git big-LITTLE-MP-master-v16 for you to fetch changes up to e695239d5f0a553e28a1ff5f346fcc3fafab2b2f: Merge branch 'master-hw-bkpt-fix' into big-LITTLE-MP-master-v16 (2013-03-20 19:53:24 +0530) ---------------------------------------------------------------- Chris Redpath (2): ARM: Experimental Frequency-Invariant Load Scaling Patch ARM: Fix build breakage when big.LITTLE.conf is not used. 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 (5): 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 'arm-multi_pmu_v2', 'task-placement-v2-sysfs', 'misc-patches' and 'config-fragments' into big-LITTLE-MP-master-v16 Merge branch 'master-hw-bkpt-fix' into big-LITTLE-MP-master-v16 Documentation/devicetree/bindings/arm/pmu.txt | 3 + Documentation/kernel-parameters.txt | 9 + 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 | 132 ++++ include/linux/sched.h | 12 + include/trace/events/sched.h | 153 ++++ kernel/irq/irqdesc.c | 21 +- kernel/sched/core.c | 4 + kernel/sched/debug.c | 3 + kernel/sched/fair.c | 1021 ++++++++++++++++++++++++- kernel/sched/sched.h | 13 +- linaro/configs/big-LITTLE-MP.conf | 13 + 18 files changed, 1663 insertions(+), 48 deletions(-) create mode 100644 linaro/configs/big-LITTLE-MP.conf

12 years, 7 months

LCA13: Video: Scheduler Internals by: Vincent Guittot

by Viresh Kumar

Hi Guys, Below are hangout upstreams of Scheduler Internals by Vincent Guittot done in LCA13. We have got another version of this recording that is done by some other cameras, but its size was 30 GB and so hard to upstream. In case you need that please contact me. Day 1: http://www.youtube.com/watch?v=2yzelou80JE Day 2: http://www.youtube.com/watch?v=fN11Lltx1nQ Thanks to Naresh for arranging for hangouts. -- Viresh

12 years, 7 months

Re: big.LITTLE MP Scheduler test summary-week-11

by Naresh Kamboju

+ linaro-dev On 16 March 2013 10:36, Naresh Kamboju <naresh.kamboju(a)linaro.org> wrote: > Hi, > > Release test report week-11: 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 10 9 9 1 90 - > mpcoresuite 4 4 4 0 75 - > mpextendedsuite 6 6 4 2 66.7 - > mploadbalance 2 2 2 0 100 - > > Android Build: > > https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-mp/… > > Linux kernel: > Linux version 3.9.0-rc2-00306-g59074f9 (jenkins-build@ip-10-226-115-80) > (gcc version 4.7.3 > 20130205 (prerelease) (Linaro GCC 4.7-2013.02) ) #1 SMP Thu Mar 14 > 05:16:16 UTC 2013 > > Results spread sheet: > > https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0Ai9ggMs8bsGJdER3a… > > summary: > > - Linaro Linux kernel updated to 3.9.0-rc2 > - No regression or new bugs found in this test cycle. > - Results are same as week-9. > > > Best regards > Naresh Kamboju >

12 years, 7 months

[RFC v2 1/1] clk: Add notifier support in clk_prepare/clk_unprepare

by Bill Huang

Add the below two notifier events so drivers which are interested in knowing the clock status can act accordingly. This is extremely useful in some of the DVFS (Dynamic Voltage Frequency Scaling) design. CLK_PREPARED CLK_UNPREPARED Signed-off-by: Bill Huang <bilhuang(a)nvidia.com> --- drivers/clk/clk.c | 3 +++ include/linux/clk.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index ed87b24..3292cec 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -550,6 +550,7 @@ void clk_unprepare(struct clk *clk) { mutex_lock(&prepare_lock); __clk_unprepare(clk); + __clk_notify(clk, CLK_UNPREPARED, clk->rate, clk->rate); mutex_unlock(&prepare_lock); } EXPORT_SYMBOL_GPL(clk_unprepare); @@ -598,6 +599,8 @@ int clk_prepare(struct clk *clk) mutex_lock(&prepare_lock); ret = __clk_prepare(clk); + if (!ret) + __clk_notify(clk, CLK_PREPARED, clk->rate, clk->rate); mutex_unlock(&prepare_lock); return ret; diff --git a/include/linux/clk.h b/include/linux/clk.h index b3ac22d..16c1d92 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -43,6 +43,8 @@ struct clk; #define PRE_RATE_CHANGE BIT(0) #define POST_RATE_CHANGE BIT(1) #define ABORT_RATE_CHANGE BIT(2) +#define CLK_PREPARED BIT(3) +#define CLK_UNPREPARED BIT(4) /** * struct clk_notifier - associate a clk with a notifier -- 1.7.9.5

12 years, 7 months

lists.linaro.org maintenance completed

by IT Services

This is to let you know that the migration of lists.linaro.org has been successfully completed. As per the email I sent on Wednesday, it may take some time for the new address of the server to be seen by your computer. You can check this by trying to connect to the web site: http://lists.linaro.org/ If you are able to connect and you do not get an error, this means you are connecting to the new server and you can send email to the lists. If you experience any problems after the weekend and you find that you still cannot connect to the server, please reply to this email to let us know. Regards Philip IT Services Manager Linaro

12 years, 7 months

Re: [BUG] v7_coherent_kern_range broken on big.LITTLE

by Jon Medhurst (Tixy)

On Fri, 2013-02-15 at 10:33 +0000, Lorenzo Pieralisi wrote: > On Fri, Feb 15, 2013 at 10:04:37AM +0000, Jon Medhurst (Tixy) wrote: > > On Thu, 2013-02-14 at 17:16 +0000, Will Deacon wrote: > > > Hi Tixy, > > > > > > On Thu, Feb 14, 2013 at 05:07:43PM +0000, Jon Medhurst (Tixy) wrote: > > > > The function v7_coherent_kern_range uses the macro icache_line_size to > > > > read the current CPUs icache line size for the purpose of invalidating > > > > all cache lines in the given range. > > > > > > > > Unfortunately, on the TC2 big.LITTLE test chip, the A15 icache line size > > > > is 64 bytes, but the A7 size is only 32 bytes. So when the function > > > > executes on the A15 it will miss out every alternate cache line for the > > > > A7. > > > > > > There is a signal (IMINLN) to the core which allows A15 to behave as though > > > it has a 32-byte line size and this should be driven correctly for big/little. > > > > How do we set that signal? Is that something we have to set up in Linux > > or is it something that we expect the Firmware to set up? > > If I am not mistaken, SCC register at offset 0x400 (bit 7) allows IMINLN to > be forced to 0 (ie Instruction Cache minimum line size == 32 bytes). > > This can be done through board.txt so that it is set up as we want. According to the TRM for TC2 the default value for that register is 0x33330c80, so adding the line "SCC: 0x400 0x33330c00" and incrementing TOTALSCCS does the trick, and the A15's now report an icache size of 32. We'll have to get everyone with a TC2 to make that change then? As this is a TC2 issue, and not Linux related, shall we drop linux-arm-kernel from all future replies to avoid the noise? I've added linaro-dev to the cc list so this continues to get public visibility. -- Tixy

12 years, 7 months

Linaro Release 13.02 Postmortem Summary

by David Zinman

Postmortem and lessons learned for Linaro's release 2013.02 https://wiki.linaro.org/Cycles/1302/Release/Review Highlights and Key Successes ============================ http://www.linaro.org/downloads/1302 http://wiki.linaro.org/Cycles/1302/Release#Release_Information The Linaro Engineering Group (LEG) released Linaro UEFI 2013.02 which fixed several bugs targeting the Arndale boards. LEG also added ARM support to libhugetlbfs, merged into next branch--package is available from Linaro's Overlay PPA. The Linaro Developer Platform team completed the CI bring up for the Arndale board: Arndale image reports have been added to the LAVA dashboard and daily tests are run on the board. The team has also enabled UEFI support in the Arndale hardware pack. The Linaro Toolchain Team released Linaro GCC 4.7-2013.02-01 based off GCC 4.7.2+svn195745 and includes arm/aarch64-4.7-branch up to svn revision 195716, support for Cortex-A7 backported from trunk. The 2013.02 Linaro Toolchain Binaries release were updated to latest Linaro GCC 4.7 2013.02-01 which included upgrades for binutils to v2.23.1, eglibc to v2.17 and the kernel header to v3.7. Blueprints ========= The number of high or essential priority blueprints that missed the cycle: Android 7 out of 11 Developer Platform 5 out of 9 Infrastructure 1 out of 4 Lava 4 out of 7 QA 2 out of 9 Total 19 out of 40 48% of high or essential priority blueprints scheduled for this cycle were not delivered. Total blueprints: 35 out of 69 missed the cycle. High priority missed blueprints recap: 12.05: 19 out of 48, 39% 12.06: 13 out of 31, 42% 12.07: 14 out of 31, 45% 12.08: 6 out of 26, 23% 12.09: 9 out of 28, 32% 12.10: 15 out of 38, 39% 12.11: 7 out of 19, 37% 12.12: not available 13.01: 9 out of 28, 33% * Not included is data from working groups and landing teams Source: https://docs.google.com/spreadsheet/ccc?key=0AjEaTwrvj1bidDFUaFJpYXJJS25CV1… -- David Zinman, Project Manager Linaro.org | Open source software for ARM SoCs

12 years, 7 months

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