linaro-dev March 2013

linaro-dev@lists.linaro.org

51 participants
53 discussions

boot Ubuntu using PXE from U-Boot on the Samsung XE303C12-A01US Chromebook

by Mario

Hello. I'm trying to boot Ubuntu using PXE from U-Boot on the Samsung XE303C12-A01US Chromebook. I would like to understand better the point 5 of the tutorial here : https://wiki.linaro.org/Boards/Arndale/Setup/PXEBoot it says : "At the u-boot prompt, set the environmental variables "serverip" and "ipaddr" as per the board and host PC configuration. Now set the following environmental variables as mentioned..." the problem is that the Samsung XE303C12-A01US does not have a serial port and I can't stop the u-boot booting and set the enviromental variables manually. I would like to know how can I embed them inside u-boot. Also because there is not a configuration file like boot.cmd/boot.scr like there is on the pandaboard that can be used to pass the parameters. Thanks. -- Mario.

12 years, 10 months

big.LITTLE MP Scheduler test summary-week-12

by Naresh Kamboju

Hi, Release test report week-12: 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 3 1 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-rc3-00212-g0f66281 (jenkins-build@ip-10-62-11 1-35) (gcc version 4.7.3 20130226 (prerelease) (Linaro GCC 4.7-2013.03) ) #1 SMP Fri Mar 22 12:35:36 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-rc3 one extra failure reported in mpcoresuite, when compare with last week results. But this test results are uncertain. Best regards Naresh Kamboju

12 years, 10 months

Test Result Summary of Calendar Week 12, 2013 for Linux Linaro ubuntu Quantal.

by Botao Sun

Calendar Week 12, 2013: Here is test result summary for Linux Linaro ubuntu Quantal image on following boards: 1) ARM Versatile Express A9; 2) Samsung Arndale; 3) TI Panda 4430; 4) TI Panda 4460; 5) ST Ericsson Snowball. Synopsis: All boards keep exactly same status as Linaro 13.02 release image except Samsung Arndale board: Kernel panic has gone in power management test. 1. ARM Versatile Express A9 + Linux Linaro Quantal (Column N): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdFNmV… It keeps exactly same status from calendar week 50 last year: only "Halt" & "Device Tree" test failed, all other features work well. 2. Samsung Arndale + Linux Linaro Quantal (Column H): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… Kernel panic has gone in power management test, but still several failed test cases observed. All other features work well except Mini HDMI display output. 3. TI Panda 4430 + Linux Linaro Quantal (Column N): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… WiFi and display output are unavailable, all other features work well. 4. TI Panda 4460 + Linux Linaro Quantal (Column N): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… Boot failed, all test is blocked. 5. ST Ericsson Snowball + Linux Linaro Quantal (Column N): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdFJ4X… SD MMC, Mini HDMI display, Reboot and Power Management test failed, all other features work well. For Linaro 13.02 release test summary, please refer to attachment. Thank you. Best Regards Botao Sun

12 years, 10 months

[RFC 1/1] clk: Add notifier support in clk_prepare_enable/clk_disable_unprepare

by Bill Huang

Add the below four 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. PRE_CLK_ENABLE POST_CLK_ENABLE PRE_CLK_DISABLE POST_CLK_DISABLE Signed-off-by: Bill Huang <bilhuang(a)nvidia.com> --- drivers/clk/clk.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/clk.h | 40 ++++++++++++++++++++--------------- 2 files changed, 81 insertions(+), 17 deletions(-) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index ed87b24..720a16a 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -1104,6 +1104,64 @@ struct clk *clk_get_parent(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_get_parent); +/** + * clk_prepare_enable - call clk_enable in non-atomic context. + * @clk: the clk to enable + * + * Send PRE_CLK_ENABLE/POST_CLK_ENABLE before/after calling + * clk_enalbe respectively + * + * Return success (0) or errno. + */ +int clk_prepare_enable(struct clk *clk) +{ + int ret; + + mutex_lock(&prepare_lock); + ret = __clk_prepare(clk); + if (ret) + return ret; + + if (clk->notifier_count) + __clk_notify(clk, PRE_CLK_ENABLE, clk->rate, clk->rate); + + ret = clk_enable(clk); + if (ret) + __clk_unprepare(clk); + + if (clk->notifier_count) + __clk_notify(clk, POST_CLK_ENABLE, clk->rate, clk->rate); + + mutex_unlock(&prepare_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(clk_prepare_enable); + +/** + * clk_disable_unprepare - call clk_disable in non-atomic context. + * @clk: the clk to enable + * + * Send PRE_CLK_DISABLE/POST_CLK_DISABLE before/after calling + * clk_disalbe respectively + */ +void clk_disable_unprepare(struct clk *clk) +{ + mutex_lock(&prepare_lock); + + if (clk->notifier_count) + __clk_notify(clk, PRE_CLK_DISABLE, clk->rate, clk->rate); + + clk_disable(clk); + __clk_unprepare(clk); + + if (clk->notifier_count) + __clk_notify(clk, POST_CLK_DISABLE, clk->rate, clk->rate); + + mutex_unlock(&prepare_lock); +} +EXPORT_SYMBOL_GPL(clk_disable_unprepare); + /* * .get_parent is mandatory for clocks with multiple possible parents. It is * optional for single-parent clocks. Always call .get_parent if it is diff --git a/include/linux/clk.h b/include/linux/clk.h index b3ac22d..4bbe1903 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -43,6 +43,10 @@ struct clk; #define PRE_RATE_CHANGE BIT(0) #define POST_RATE_CHANGE BIT(1) #define ABORT_RATE_CHANGE BIT(2) +#define PRE_CLK_ENABLE BIT(3) +#define POST_CLK_ENABLE BIT(4) +#define PRE_CLK_DISABLE BIT(5) +#define POST_CLK_DISABLE BIT(6) /** * struct clk_notifier - associate a clk with a notifier @@ -276,6 +280,20 @@ struct clk *clk_get_parent(struct clk *clk); */ struct clk *clk_get_sys(const char *dev_id, const char *con_id); +/** + * clk_prepare_enable - helps cases using clk_enable in non-atomic context. + * @clk: clock source + * + * Return success (0) or nagative errno. + */ +int clk_prepare_enable(struct clk *clk); + +/** + * clk_disable_unprepare - helps cases using clk_disable in non-atomic context. + * @clk: clock source + */ +void clk_disable_unprepare(struct clk *clk); + #else /* !CONFIG_HAVE_CLK */ static inline struct clk *clk_get(struct device *dev, const char *id) @@ -324,30 +342,18 @@ static inline struct clk *clk_get_parent(struct clk *clk) return NULL; } -#endif - -/* clk_prepare_enable helps cases using clk_enable in non-atomic context. */ static inline int clk_prepare_enable(struct clk *clk) { - int ret; - - ret = clk_prepare(clk); - if (ret) - return ret; - ret = clk_enable(clk); - if (ret) - clk_unprepare(clk); - - return ret; + return 0; } -/* clk_disable_unprepare helps cases using clk_disable in non-atomic context. */ -static inline void clk_disable_unprepare(struct clk *clk) +static inline int clk_disable_unprepare(struct clk *clk) { - clk_disable(clk); - clk_unprepare(clk); + return 0; } +#endif + /** * clk_add_alias - add a new clock alias * @alias: name for clock alias -- 1.7.9.5

12 years, 10 months

Re: Kernel Panic on 13.02

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, 10 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, 10 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, 10 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, 10 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, 10 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, 10 months

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linaro-dev March 2013