linaro-kernel

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10095 discussions

[ACTIVITY] (Arnd Bergmann) 2011-02-21 = 2011-02-25

by Arnd Bergmann

== Kernel development == * Continued multiple code reviews * Bug 712175, partial analysis * Discussed ST-Ericsson MCDE driver design == Flash drive performance == * Discussed remapper design with Jörn Engel (logfs developer) and others * More measurements, discovered a card that does log-structured writes across multiple segments * Helped other people start using flashbench == Vacation == * Took one day off

14 years, 4 months

[ACTIVITY] (Paul E. McKenney) 2011-02-21 = 2011-02-25

by Paul E. McKenney

== RCU priority boosting == * RCU priority boosting passes moderate testing * Posted RCU priority boosting patches to LKML, good feedback and fixes * Continuing testing == Processes == * Completed a TSC license request. == Misc == * Continued chasing additional Power bugs to enable tests on larger systems. * Did some testing of the John's and Jason's kernel-configuration management work

14 years, 4 months

Remote Access to H/W

by Mounir Bsaibes

As one action from last kernel WG meeting, I have investigate the availability of boards Remote Access. Right now, we don't have anything setup for remote access. Either we have to have the boards in hand or we have to check the https://wiki.linaro.org/Internal/Hardware and see who has the needed board(s) and see whether we can run the tests on that board9s). The Validation's team is looking at supporting building and testing the landing team kernels, at that time we may have something we can work with. The kernel engineer will build and create the kernel image that needs to be tested, then he/she would run the setup that is availble to the Landing teams. (this is still work in progress, we don't know the exact details yet). On the long run, maybe we should open a Stakeholders Proposal to address Remote Access and make it easier to the engineers to reserve a board and use it for a short while. Regards, Mounir

14 years, 4 months

.note.gnu.build-id section not really used in ARM kernel (and NOTES macro not present in linker cmd file)

by Frederic Turgis

Hi all, While testing systemtap v1.4, I encountered an issue in the tool that had been fixed in the past (and reintroduced recently). I have investigated with Redhat guys and here is what we have found: - root cause is that .note.gnu.build-id is mapped at address 0 in vmlinux (we did a readelf -S on vmlinux) - (.note.*) sections can be mapped at a specific location through NOTES macro defined in vmlinux.lds.h. vmlinux.lds.h mentions that minimal linker scripts has following content ... * _edata = .; * * EXCEPTION_TABLE(...) * NOTES - .note.gnu.build-id is mapped at address 0 because NOTES is not used in ARM linker cmd file. We are wondering if there is any specific reason with Redhat. Furthermore, .zImage.cmd contains "arm-linux-gnueabi-objcopy ... -R .note -R .note.gnu.build-id", where "-R" removes mentioned sections from the binary. We clearly don't want (.notes.*) sections, which could have appeared as /sys/kernel/notes Would there be an interest in mapping "notes" section in linker cmd file ? Regards Fred

14 years, 4 months

Building the omap kernel for Thumb-2

by Dave Martin

Hi there, Talking with Loic just now, we thought it could be worth turning on Thumb-2 in the main omap kernel package after all, since we've at least seen it work on a few different boards now. It feels ready for wider testing. Is it possible for you to move to a newer snapshot of the 2.6.38 linaro tree, or will that be problematic at this stage? Since the imx51 kernel at least seems to build and boot in Thumb, it could be worth enabling a separate build in a PPA, but it's may not mature enough for everyone to use as the main kernel just yet. If you want to try this, you need CONFIG_ARM_UNWIND=y, CONFIG_LATENCYTOP=n and CONFIG_THUMB2_KERNEL=y Cheers ---Dave

14 years, 4 months

Linaro 10.11 Igep v2 Wifi

by Encima

Hi All, Not sure if I have subscribed to the right list but I was wondering if anyone had some insight as to how to get the wifi working on the igep? I have downloaded the firmware, copied it to the lib/firmware. Can't see it anywhere though. ifconfig only shows eth0 and lo. Any help is appreciated and I apologise if this is the wrong list (or area completely!) Chris

14 years, 4 months

[GIT PULL v2] omap[34] Thumb-2 support for linux-linaro-2.6.38

by Dave Martin

The following changes since commit 239a14a340ad4a81cfff4075625382d7f78f5258: (Rebased against git://git.linaro.org/kernel/linux-linaro-2.6.38.git) Merge commit 'v2.6.38-rc6' into linaro-2.6.38 (2011-02-22 22:26:28 -0500) are available in the git repository at: git://git.linaro.org/people/dmart/linux-2.6-arm.git for-linaro-2.6.38/dirty/arm/omap-thumb2+merged Dave Martin (9): ARM: omap4: Provide do_wfi() for Thumb-2 ARM: omap4: Convert END() to ENDPROC() for correct linkage with CONFIG_THUMB2_KERNEL ARM: omap3: Remove hand-encoded SMC instructions ARM: omap3: Thumb-2 compatibility for sram34xx.S ARM: omap3: Thumb-2 compatibility for sleep34xx.S ARM: Thumb-2: Symbol manipulation macros for function body copying ARM: Add local symbols in relocate_kernel.S to work around gas bugs ARM: omap3: Work around assembler errors in sleep34xx.S ARM: Thumb-2: Reflect ARM/Thumb-2 configuration in module vermagic Jean Pihet (2): omap: use fncpy to copy the PM code functions to SRAM OMAP: fix fncpy API call arch/arm/include/asm/fncpy.h | 94 +++++++++++++++++++++++ arch/arm/include/asm/module.h | 8 ++ arch/arm/kernel/relocate_kernel.S | 12 ++- arch/arm/mach-omap1/pm.h | 6 +- arch/arm/mach-omap1/sleep.S | 3 + arch/arm/mach-omap1/sram.S | 1 + arch/arm/mach-omap2/include/mach/omap4-common.h | 4 + arch/arm/mach-omap2/omap-headsmp.S | 2 +- arch/arm/mach-omap2/omap44xx-smc.S | 8 +- arch/arm/mach-omap2/pm.h | 2 +- arch/arm/mach-omap2/sleep24xx.S | 2 + arch/arm/mach-omap2/sleep34xx.S | 71 ++++++++++++++---- arch/arm/mach-omap2/sram242x.S | 3 + arch/arm/mach-omap2/sram243x.S | 3 + arch/arm/mach-omap2/sram34xx.S | 37 +++++++-- arch/arm/plat-omap/include/plat/sram.h | 14 +++- arch/arm/plat-omap/sram.c | 14 ++- 17 files changed, 243 insertions(+), 41 deletions(-) create mode 100644 arch/arm/include/asm/fncpy.h

14 years, 4 months

The linaro-2.6.38 kernel is now open

by Nicolas Pitre

As the next Linaro release (11.05) will include the 2.6.38 kernel, it was decided that the linaro-2.6.38 branch would open early i.e. before the final 2.6.38 kernel is released. So there it is. All the extra patches that were available in linaro-2.6.37 should be included in linaro-2.6.38 at this point. Some notable exceptions at the moment are some Thumb2 support patches, and some ARMv6k compatibility patches. I expect to get a fresh set from Dave Martin soon for the former, and I'll eventually merge RMK's devel branch which would bring in the later. But as you should know already, the feature freeze is due this Thursday February 24th. So now is the time to consider the linaro-2.6.38 tree, put on top all the patches you want to see in the upcoming Linaro release, and ask me to merge them in. If you need some subsystem tree such as MMC to be included as well then now is the time to say so as well. Nicolas

14 years, 4 months

[GIT PULL] omap[34] Thumb-2 support for linux-linaro-2.6.38

by Dave Martin

The following changes since commit 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5: Linux 2.6.38-rc2 (2011-01-21 19:01:34 -0800) are available in the git repository at: git://git.linaro.org/people/dmart/linux-2.6-arm.git dirty/arm/omap-thumb2+merged Dave Martin (9): ARM: omap4: Provide do_wfi() for Thumb-2 ARM: omap4: Convert END() to ENDPROC() for correct linkage with CONFIG_THUMB2_KERNEL ARM: omap3: Remove hand-encoded SMC instructions ARM: omap3: Thumb-2 compatibility for sram34xx.S ARM: omap3: Thumb-2 compatibility for sleep34xx.S ARM: Thumb-2: Symbol manipulation macros for function body copying ARM: Correct WFE() in asm/spinlock.h for Thumb-2 ARM: Add local symbols in relocate_kernel.S to work around gas bugs ARM: omap3: Work around assembler errors in sleep34xx.S Jean Pihet (2): omap: use fncpy to copy the PM code functions to SRAM OMAP: fix fncpy API call Ming Lei (1): arm: fix oops in sched_clock_poll Russell King (3): ARM: bitops: ensure set/clear/change bitops take a word-aligned pointer ARM: bitops: switch set/clear/change bitops to use ldrex/strex ARM: v6k: remove CPU_32v6K dependencies in asm/spinlock.h arch/arm/include/asm/bitops.h | 60 +++++--------- arch/arm/include/asm/fncpy.h | 94 +++++++++++++++++++++++ arch/arm/include/asm/spinlock.h | 53 ++++++++++--- arch/arm/kernel/armksyms.c | 18 ++--- arch/arm/kernel/relocate_kernel.S | 12 ++- arch/arm/kernel/sched_clock.c | 4 +- arch/arm/lib/bitops.h | 46 +++++++----- arch/arm/lib/changebit.S | 10 +-- arch/arm/lib/clearbit.S | 11 +-- arch/arm/lib/setbit.S | 11 +-- arch/arm/lib/testchangebit.S | 9 +-- arch/arm/lib/testclearbit.S | 9 +-- arch/arm/lib/testsetbit.S | 9 +-- arch/arm/mach-omap1/pm.h | 6 +- arch/arm/mach-omap1/sleep.S | 3 + arch/arm/mach-omap1/sram.S | 1 + arch/arm/mach-omap2/include/mach/omap4-common.h | 4 + arch/arm/mach-omap2/omap-headsmp.S | 2 +- arch/arm/mach-omap2/omap44xx-smc.S | 8 +- arch/arm/mach-omap2/pm.h | 2 +- arch/arm/mach-omap2/sleep24xx.S | 2 + arch/arm/mach-omap2/sleep34xx.S | 71 ++++++++++++++---- arch/arm/mach-omap2/sram242x.S | 3 + arch/arm/mach-omap2/sram243x.S | 3 + arch/arm/mach-omap2/sram34xx.S | 37 +++++++-- arch/arm/plat-omap/include/plat/sram.h | 14 +++- arch/arm/plat-omap/sram.c | 14 ++- 27 files changed, 350 insertions(+), 166 deletions(-) create mode 100644 arch/arm/include/asm/fncpy.h

14 years, 4 months

git tree of hwpack kernels

by Ken Werner

Hi there, I've got a quick question. From which git tree are the hwpack kernels built from? From what I can see it seems to be this guy currently: http://git.linaro.org/gitweb?p=ubuntu/linux-linaro-natty.git but I'm not quite sure. Thanks, Ken

14 years, 4 months

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