linaro-dev November 2012

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70 participants
66 discussions

ANN: people.linaro.org going down for 30 min, today at 17:00UTC

by Fathi Boudra

Hi All, There's a scheduled downtime for 30 min, today at 17:00UTC. We plan to increase the disk space available on people.linaro.org. Thanks. Cheers, -- Fathi Boudra Linaro Release Manager | LAVA Project Manager Linaro.org | Open source software for ARM SoCs

12 years, 1 month

[GIT PULL]: big LITTLE MP v11

by Viresh Kumar

Hi Andrey, Please PULL b.L MP V11 branch from my tree. Pull request is generated against v3.7-rc3: Updates: ------- - Based on v3.7-rc3 - Stats: - Total Patches: 70 - New Patches: 22 - per-task-load-average-v3-merged: 1 by Peter Z. - per-entity-load-tracking-with-core-sched-v1: 15 by Preeti - sched-pack-small-tasks-v1:6 by Vincent - Dropped patches/branches (as they are already merged in 3.7): 24 - arm-asymmetric-support-v3-v3.6-rc1: 1 - per-cpu-thread-hotplug-v3-fixed: 8 - rcu-hotplug-v1: 4 - scheduler-misc-v1: 1 - arm-multi_pmu_v2: 10 (out of 24 merged) - Updated Patches: 16 - per-task-load-average-v3-merged updated with patches applied to sched/core tip ------------------------8<------------------------------------------------ The following changes since commit 8f0d8163b50e01f398b14bcd4dc039ac5ab18d64: Linux 3.7-rc3 (2012-10-28 12:24:48 -0700) are available in the git repository at: git://git.linaro.org/arm/big.LITTLE/mp.git big-LITTLE-MP-v11 for you to fetch changes up to 0c44ec0c38e97e404d0f9921f5cbeb7deb1dfc8b: Merge branches 'arm-multi_pmu_v2', 'hw-bkp-v7.1-debug-v1', 'task-placement-v2', 'per-entity-load-tracking-with-core-sched-v1', 'config-fragments' and 'sched-pack-small-tasks-v1' into big-LITTLE-MP-v11 (2012-11-05 15:11:02 +0530) ---------------------------------------------------------------- Ben Segall (1): sched: Maintain per-rq runnable averages Dietmar Eggemann (1): ARM: hw_breakpoint: v7.1 self-hosted debug powerdown support Jon Medhurst (6): configs: Initial core configs configs: Make CONFIG_MODULES part of linaro-base configs: Replace CONFIG_PERF_COUNTERS with CONFIG_PERF_EVENTS configs: android: Enable FB_EARLYSUSPEND configs: android: Enable CONFIG_INPUT_UINPUT to get aidb working ARM: sched: Avoid empty 'slow' HMP domain Lorenzo Pieralisi (1): ARM: kernel: provide cluster to logical cpu mask mapping API Marc Zyngier (1): ARM: perf: add guest vs host discrimination Mark Rutland (1): ARM: perf: register cpu_notifier at driver init Morten Rasmussen (13): linaro/configs: Enable HMP priority filter by default 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 Paul Turner (15): sched: Track the runnable average on a per-task entity basis sched: Aggregate load contributed by task entities on parenting cfs_rq sched: Maintain the load contribution of blocked entities sched: Add an rq migration call-back to sched_class sched: Account for blocked load waking back up sched: Aggregate total task_group load sched: Compute load contribution by a group entity sched: Normalize tg load contributions against runnable time sched: Maintain runnable averages across throttled periods sched: Replace update_shares weight distribution with per-entity computation sched: Refactor update_shares_cpu() -> update_blocked_avgs() sched: Update_cfs_shares at period edge sched: Make __update_entity_runnable_avg() fast sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking sched: implement usage tracking Peter Zijlstra (1): sched: Describe CFS load-balancer Preeti U Murthy (14): sched:Prevent movement of short running tasks during load balancing sched:Pick the apt busy sched group during load balancing sched:Decide whether there be transfer of loads based on the PJT's metric sched:Decide group_imb using PJT's metric sched:Calculate imbalance using PJT's metric sched: Changing find_busiest_queue to use PJT's metric sched: Change move_tasks to use PJT's metric sched: Some miscallaneous changes in load_balance sched: Modify check_asym_packing to use PJT's metric sched: Modify fix_small_imbalance to use PJT's metric sched: Modify find_idlest_group to use PJT's metric sched: Modify find_idlest_cpu to use PJT's metric sched: Modifying wake_affine to use PJT's metric sched: Explicit division calls on 64-bit integers Ricardo Salveti de Araujo (7): configs: moving previous ubuntu.conf as ubuntu-minimal and creating a full ubuntu one configs: ubuntu: be compatible with the enforce script configs: ubuntu: disabling CODA_FS, seems to be broken atm configs: ubuntu: disabling CGROUPS as default configs: ubuntu: updating configs for 3.5 configs: ubuntu: disabling CONFIG_MTD_NAND_NANDSIM=m, breaking build config: ubuntu: ATH6KL should be platform dependent Sudeep KarkadaNagesha (9): ARM: perf: allocate CPU PMU dynamically at probe time ARM: perf: consistently use struct perf_event in arm_pmu functions ARM: perf: check ARMv7 counter validity on a per-pmu basis 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 Tushar Behera (1): linaro/configs: ubuntu: Disable support for generic OHCI platform driver Vincent Guittot (5): sched: add a new SD SHARE_POWERLINE flag for sched_domain sched: pack small tasks sched: secure access to other CPU statistics sched: pack the idle load balance ARM: sched: clear SD_SHARE_POWERLINE Viresh Kumar (6): 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 Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Merge branches 'arm-multi_pmu_v2', 'hw-bkp-v7.1-debug-v1', 'task-placement-v2', 'per-entity-load-tracking-with-core-sched-v1', 'config-fragments' and 'sched-pack-small-tasks-v1' into big-LITTLE-MP-v11 Will Deacon (2): ARM: perf: return NOTIFY_DONE from cpu notifier when no available PMU ARM: perf: consistently use arm_pmu->name for PMU name Documentation/devicetree/bindings/arm/pmu.txt | 3 + arch/arm/Kconfig | 47 + arch/arm/include/asm/perf_event.h | 5 + arch/arm/include/asm/pmu.h | 40 +- arch/arm/include/asm/topology.h | 34 + arch/arm/kernel/hw_breakpoint.c | 57 + arch/arm/kernel/perf_event.c | 103 +- arch/arm/kernel/perf_event_cpu.c | 169 +- arch/arm/kernel/perf_event_v6.c | 130 +- arch/arm/kernel/perf_event_v7.c | 295 ++-- arch/arm/kernel/perf_event_xscale.c | 161 +- arch/arm/kernel/topology.c | 125 ++ arch/ia64/include/asm/topology.h | 1 + arch/tile/include/asm/topology.h | 1 + include/linux/sched.h | 29 + include/linux/topology.h | 3 + include/trace/events/sched.h | 153 ++ kernel/sched/core.c | 16 + kernel/sched/debug.c | 39 +- kernel/sched/fair.c | 1785 ++++++++++++++++++--- kernel/sched/sched.h | 65 +- linaro/configs/android.conf | 33 + linaro/configs/big-LITTLE-MP.conf | 11 + linaro/configs/linaro-base.conf | 84 + linaro/configs/ubuntu-minimal.conf | 24 + linaro/configs/ubuntu.conf | 2132 +++++++++++++++++++++++++ 26 files changed, 4910 insertions(+), 635 deletions(-) create mode 100644 linaro/configs/android.conf create mode 100644 linaro/configs/big-LITTLE-MP.conf create mode 100644 linaro/configs/linaro-base.conf create mode 100644 linaro/configs/ubuntu-minimal.conf create mode 100644 linaro/configs/ubuntu.conf

12 years, 1 month

[PATCH v3 00/23] Introduce Xen support on ARM

by Stefano Stabellini

Hi all, this patch series implements Xen support for ARMv7 with virtualization extensions. It allows a Linux guest to boot as dom0 and as domU on Xen on ARM. PV console, disk and network frontends and backends are all working correctly. It has been tested on a Versatile Express Cortex A15 emulator, using the latest Xen ARM developement branch (git://xenbits.xen.org/people/ianc/xen-unstable.git arm-for-4.3) plus the "ARM hypercall ABI: 64 bit ready" patch series (http://marc.info/?l=xen-devel&m=134426267205408), and a simple ad-hoc tool to build guest domains (marc.info/?l=xen-devel&m=134089788016546). The patch marked with [HACK] shouldn't be applied and is part of the series only because it is needed to create domUs. I am also attaching to this email the dts'es that I am currently using for dom0 and domU: vexpress-v2p-ca15-tc1.dts (that includes vexpress-v2m-rs1-rtsm.dtsi) is the dts used for dom0 and it is passed to Linux by Xen, while vexpress-virt.dts is the dts used for other domUs and it is appended in binary form to the guest kernel image. I am not sure where they are supposed to live yet, so I am just attaching them here so that people can actually try out this series if they want to. Comments are very welcome! Changes in v3: - move patches that have been picked up by Konrad at the end of the series; - improve comments; - add a doc to describe the Xen Device Tree format; - do not use xen_ulong_t for multicalls and apic_physbase; - add a patch at the end of the series to use the new __HVC macro; - add missing pvclock-abi.h include to ia64 header files; - do not use an anonymous union in struct xen_add_to_physmap. Changes in v2: - fix up many comments and commit messages; - remove the early_printk patches: rely on the emulated serial for now; - remove the xen_guest_init patch: without any PV early_printk, we don't need any early call to xen_guest_init, we can rely on core_initcall alone; - define an HYPERCALL macro for 5 arguments hypercall wrappers, even if at the moment is unused; - use ldm instead of pop in the hypercall wrappers; - return -ENOSYS rather than -1 from the unimplemented grant_table functions; - remove the pvclock ifdef in the Xen headers; - remove include linux/types.h from xen/interface/xen.h; - replace pr_info with pr_debug in xen_guest_init; - add a new patch to introduce xen_ulong_t and use it top replace all the occurences of unsigned long in the public Xen interface; - explicitely size all the pointers to 64 bit on ARM, so that the hypercall ABI is "64 bit ready"; - clean up xenbus_init; - make pci.o depend on CONFIG_PCI and acpi.o depend on CONFIG_ACPI; - mark Xen guest support on ARM as EXPERIMENTAL; - introduce GRANT_TABLE_PHYSADDR; - remove unneeded initialization of boot_max_nr_grant_frames; - add a new patch to clear IRQ_NOAUTOEN and IRQ_NOREQUEST in events.c; - return -EINVAL from xen_remap_domain_mfn_range if auto_translated_physmap; - retain binary compatibility in xen_add_to_physmap: use a union to introduce foreign_domid. Ian Campbell (1): [HACK] xen/arm: implement xen_remap_domain_mfn_range Stefano Stabellini (24): arm: initial Xen support xen/arm: hypercalls xen/arm: page.h definitions xen/arm: sync_bitops xen/arm: empty implementation of grant_table arch specific functions docs: Xen ARM DT bindings xen/arm: Xen detection and shared_info page mapping xen/arm: Introduce xen_pfn_t for pfn and mfn types xen/arm: Introduce xen_ulong_t for unsigned long xen/arm: compile and run xenbus xen: do not compile manage, balloon, pci, acpi and cpu_hotplug on ARM xen/arm: introduce CONFIG_XEN on ARM xen/arm: get privilege status xen/arm: initialize grant_table on ARM xen/arm: receive Xen events on ARM xen: clear IRQ_NOAUTOEN and IRQ_NOREQUEST xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree xen: allow privcmd for HVM guests xen/arm: compile blkfront and blkback xen/arm: compile netback arm/v2m: initialize arch_timers even if v2m_timer is not present xen/arm: use the __HVC macro xen: missing includes xen: update xen_add_to_physmap interface Documentation/devicetree/bindings/arm/xen.txt | 22 +++ arch/arm/Kconfig | 10 + arch/arm/Makefile | 1 + arch/arm/include/asm/hypervisor.h | 6 + arch/arm/include/asm/sync_bitops.h | 27 +++ arch/arm/include/asm/xen/events.h | 18 ++ arch/arm/include/asm/xen/hypercall.h | 69 +++++++ arch/arm/include/asm/xen/hypervisor.h | 19 ++ arch/arm/include/asm/xen/interface.h | 73 ++++++++ arch/arm/include/asm/xen/page.h | 82 ++++++++ arch/arm/mach-vexpress/v2m.c | 11 +- arch/arm/xen/Makefile | 1 + arch/arm/xen/enlighten.c | 245 +++++++++++++++++++++++++ arch/arm/xen/grant-table.c | 53 ++++++ arch/arm/xen/hypercall.S | 102 ++++++++++ arch/ia64/include/asm/xen/interface.h | 8 +- arch/x86/include/asm/xen/interface.h | 8 + arch/x86/xen/enlighten.c | 1 + arch/x86/xen/irq.c | 1 + arch/x86/xen/mmu.c | 3 + arch/x86/xen/xen-ops.h | 1 - drivers/block/xen-blkback/blkback.c | 1 + drivers/net/xen-netback/netback.c | 1 + drivers/net/xen-netfront.c | 1 + drivers/tty/hvc/hvc_xen.c | 2 + drivers/xen/Makefile | 11 +- drivers/xen/events.c | 18 ++- drivers/xen/grant-table.c | 1 + drivers/xen/privcmd.c | 20 +- drivers/xen/xenbus/xenbus_comms.c | 2 +- drivers/xen/xenbus/xenbus_probe.c | 62 +++++-- drivers/xen/xenbus/xenbus_probe_frontend.c | 1 + drivers/xen/xenbus/xenbus_xs.c | 1 + drivers/xen/xenfs/super.c | 7 + include/xen/events.h | 2 + include/xen/interface/features.h | 3 + include/xen/interface/grant_table.h | 4 +- include/xen/interface/io/protocols.h | 3 + include/xen/interface/memory.h | 32 ++- include/xen/interface/physdev.h | 2 +- include/xen/interface/platform.h | 4 +- include/xen/interface/version.h | 2 +- include/xen/interface/xen.h | 7 +- include/xen/privcmd.h | 3 +- include/xen/xen.h | 2 +- 45 files changed, 885 insertions(+), 68 deletions(-) A branch based on 3.5-rc7 is available here (the __HVC patch is missing from this branch because it depends on "ARM: opcodes: Facilitate custom opcode injection" http://marc.info/?l=linux-arm-kernel&m=134442896128124): git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 3.5-rc7-arm-3 Cheers, Stefano

12 years, 1 month

Installable ARMv8 cross-toolchain

by Wookey

After a fair amount of dicking about I have managed to build a cross-toolchain for arm64/aarch64 which installs on Ubuntu Quantal. It even builds packages, although it has at least one notable limitation, and I have no idea if it produces working code yet :-) The main limitation is that the default library search paths have come out as the old dpkg-cross ones, not the new multiarch ones. If someone can tell me where to fix that it would be very helpful and I'll try and put an updated one in the repo. In the meantime you can work round it effectively using /etc/dpkg/buildflags. (see wiki page below for details) The cross-toolchain only supports C, C++ and fortran with no extras like libssp, libmudflap etc, because there is no architecture support for them yet. I started a port page to keep track of things here: http://wiki.debian.org/Arm64Port And if you want to set up a quantal chroot and see if you can build things, details are here: https://wiki.linaro.org/Platform/DevPlatform/CrossCompile/arm64bootstrap The bottom line is that you can debootstrap (or sbuild-createchroot) a quantal chroot, add the bootstrap repo and do 'apt-get install crossbuild-essential-arm64' and get a working cross-build environment. The repo is here: http://people.debian.org/~wookey/bootstrap.html That should be useable for both dpkg-cross style bulding or multiarch-style bulding. The repo also contains updated dpkg-cross, multiarch python, multiarch perl, updated dpkg with buildprofile/staging support, sbuild (although in fact I think stock sbuild should work OK), and dose-builddebcheck which can tell you what things are currently cross-buildable from available binaries and sources. Most of that is pretty new and not very well tested but 'it works for me'. More arm64 packages will be along soon (dose3 currently indicates 40 more buildabale packages), but there is plenty still to fix for a full debootstrap-able arm64 package set. Anyone keen to help with bootstrapping the port is very welcome. There will be a session about it at UDS next week, and a more general one on distro bootrapping at the Armv8 minisummit a the co-located linaro connect. And I'll be giving a talk about this stuff at Linxconf-Europe in Barcelona the week after. I think that's all for now. Enjoy, and tell me what breaks :-) Wookey -- Principal hats: Linaro, Emdebian, Wookware, Balloonboard, ARM http://wookware.org/

12 years, 1 month

Lenovo battery at registration desk

by Michael Hope

I found a lonely looking Lenovo laptop battery in BV1. I've left it at the registration desk. -- Michael

12 years, 1 month

Re: Linaro Website Contact

by Loïc Minier

Hey (Cc:ing linaro-dev@ where we usually discuss technical stuff) On Wed, Oct 31, 2012, sundar.subramaniyan(a)gmail.com wrote: > This is great. Just tried the pre-compiled image and works like a charm. > It took a little longer than two minutes though on my i3/4Gig machine. > Haven't yet tried compiling anything yet but how do i get started with > porting some libraries to armv8? Just compile with the toolchain and run? Great! This page gives some ideas on how to rebuild the filesystem and how to fix some common issues: https://wiki.linaro.org/HowTo/ARMv8/OpenEmbedded Perhaps you want to try to build this or that software you care about, or just try "bitbake world" to build as many things as possible and see what breaks :-) Cheers, -- Loïc Minier

12 years, 1 month

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linaro-dev November 2012