On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
This patch adds the required Kconfig and Makefile entries to
enable and compile common idle code for ARM kernel.
Common idle code depends on CPU_PM platform notifiers to trigger
save/restore of kernel subsystems like PMU, VFP, GIC.
Signed-off-by: Lo
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
This patch adds the code required to allocate and populate page tables
that are needed by save/restore code to deal with MMU off/on
transactions.
MMU is enabled early in the resume path which allows to call into
Linux subsystems with init_mm virtual
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
When the system hits deep low power states the L2 cache controller
can lose its internal logic values and possibly its TAG/DATA RAM content.
This patch adds save/restore hooks to the L2x0 subsystem to save/restore
L2x0 registers and clean/invalidate/
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
When a CLUSTER is powered down the SCU must be reinitialized on
warm-boot.
This patch adds a hook to reset the SCU, which implies invalidating
TAG RAMs and renabling it.
The scu virtual address is saved in a static variable when the SCU
is first enab
On 7/7/2011 6:41 PM, Colin Cross wrote:
On Thu, Jul 7, 2011 at 6:35 PM, Santosh Shilimkar
wrote:
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
From: Colin Cross
When the cpu is powered down in a low power mode, the gic cpu
interface may be reset, and when the cpu complex is powered
down, th
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
This patch provides the code infrastructure needed to maintain
a generic per-cpu architecture implementation of idle code.
sr_platform.c :
- code manages patchset initialization and memory management
sr_context.c:
- code initializes
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
In order to define a common idle interface for the kernel
to enter low power modes, this patch provides include files
and code that manages OS calls for low power entry and exit.
[]
diff --git a/arch/arm/kernel/sr_entry.S b/arch/arm/kernel/sr
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
From: Colin Cross
When the cpu is powered down in a low power mode, the gic cpu
interface may be reset, and when the cpu complex is powered
down, the gic distributor may also be reset.
This patch uses CPU_PM_ENTER and CPU_PM_EXIT notifiers to save
a
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
From: Colin Cross
During some CPU power modes entered during idle, hotplug and
suspend, peripherals located in the CPU power domain, such as
the GIC and VFP, may be powered down. Add a notifier chain
that allows drivers for those peripherals to be n
Minor nit,
On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
From: Will Deacon
This patch adds simple definitions of cpu_reset for ARMv6 and ARMv7
cores, which disable the MMU via the SCTLR.
Signed-off-by: Will Deacon
---
arch/arm/mm/proc-v6.S |5 +
arch/arm/mm/proc-v7.S |7 +++
On Thu, 2011-07-07 at 16:52 -0700, john stultz wrote:
> On Thu, 2011-07-07 at 16:48 -0700, john stultz wrote:
> > Known issues:
> > -
> > o The ADB code has changed in 3.0, and requires some commands from
> > userland at boot in order to be enabled. See bug #807230 for details.
> >
> >
On Thu, 2011-07-07 at 16:48 -0700, john stultz wrote:
> Known issues:
> -
> o The ADB code has changed in 3.0, and requires some commands from
> userland at boot in order to be enabled. See bug #807230 for details.
>
> o EDID isn't yet working, so to get graphics on pandaboard, I neede
I've just pushed a 3.0 based branch to the Linaro+Android git tree,
which can be found here:
git://git.linaro.org/people/jstultz/android.git linaro-android-3.0
See the revision log here:
http://git.linaro.org/gitweb?p=people/jstultz/android.git;a=shortlog;h=refs/heads/linaro-android-3.0
At the m
On 5 July 2011 15:49, Dave Martin wrote:
> On Fri, Jul 1, 2011 at 6:10 PM, David Gilbert
> wrote:
>> Hi All,
>> I've just submitted the patches for the 64 bit atomic stuff to the
>> gcc-patches list.
>> Richard Henderson has raised the question of why the ARM commpage isn't a
>> full
>> VDSO a
On Wed, 06 Jul 2011 22:45:53 +0200, Zygmunt Krynicki
wrote:
> Hi folks.
>
> I wrote this script that allows one to upgrade from l-c to
> lava-dashboard. The script is interactive due to debconf which we are
> currently stuck with. I tested it in several configurations on a
> snapshot of l-c 0
Confirmed: the combination of a linaro-2.6.39 kernel with a transcend 8gb
card results in flakey boots.
- linaro-2.6.39 kernel is affected
- transcend cards are affected
- oe-2.6.36 kernel is *not* affected
- sandisk 8gb cards are *not* affected (67 megabytes smaller)
I zero'd a card,
adding Rafael, since he was interested in cpu_pm notifiers.
On Thu, Jul 7, 2011 at 8:50 AM, Lorenzo Pieralisi
wrote:
> This patch adds notifiers to manage low-power entry/exit in a platform
> independent manner through a series of callbacks.
> The goal is to enhance CPU specific notifiers with a
On Thu, Jul 7, 2011 at 8:50 AM, Lorenzo Pieralisi
wrote:
> When the system hits deep low power states the L2 cache controller
> can lose its internal logic values and possibly its TAG/DATA RAM content.
>
> This patch adds save/restore hooks to the L2x0 subsystem to save/restore
> L2x0 registers an
On Fri, 24 Jun 2011 16:05:04 -0400
James Westby wrote:
> Everyone can now go to android.git.linaro.org and login by entering
> your LP profile URL, e.g.
>
> https://launchpad.net/~james-w
I keep forgetting this myself, so here's what James told me on IRC:
the correct OpenID URL to use for log
On Thu, Jul 07, 2011 at 04:50:13PM +0100, Lorenzo Pieralisi wrote:
> This patchset is a first attempt at providing a consolidation of idle
> code for the ARM processor architecture and a request for comment on
> the provided methodology.
> It relies and it is based on kernel features such as suspen
LEBs images on
their way to the next release: 11.07.
* Android:
http://snapshots.linaro.org/11.05-daily/linaro-android/leb-panda/20110707/
* Ubuntu:
http://snapshots.linaro.org/11.05-daily/linaro-ubuntu-desktop/20110707/0/images/tar/
http://snapshots.linaro.org/11.05-daily/linaro-hwpacks
This patch provides reset entry point for A9, A8, A5 processors.
The reset functions invalidate I$ and D$ depending on the processor needs
and jump to the save/restore entry point in sr_entry.S.
The reset address is obtained through the arch_reset_handler() function that
returns a function pointe
This patch provides v7 assembly functions to disable-clean-invalidate
D$ and programme the SCU CPU power status register.
The function to disable/clean/invalidate D$ is just a shim that
clears the C bit and jump to the respective function defined in proc
info.
SCU CPU power mode is there to progr
When the system hits deep low power states the L2 cache controller
can lose its internal logic values and possibly its TAG/DATA RAM content.
This patch adds save/restore hooks to the L2x0 subsystem to save/restore
L2x0 registers and clean/invalidate/disable the cache controller as
needed.
The cac
When a CLUSTER is powered down the SCU must be reinitialized on
warm-boot.
This patch adds a hook to reset the SCU, which implies invalidating
TAG RAMs and renabling it.
The scu virtual address is saved in a static variable when the SCU
is first enabled at boot; this allows common idle code to be
This patch adds the required Kconfig and Makefile entries to
enable and compile common idle code for ARM kernel.
Common idle code depends on CPU_PM platform notifiers to trigger
save/restore of kernel subsystems like PMU, VFP, GIC.
Signed-off-by: Lorenzo Pieralisi
---
arch/arm/Kconfig |
This patch integrates the new PM notifier chain into the perf driver
and provides code to execute proper callbacks when a CPU is powered down/up.
Since PMU registers are saved/restored on context switch a simple enable/disable
of PMU is enough to enter/exit lowpower.
v7 requires the counters to be
This patch adds notifiers to manage low-power entry/exit in a platform
independent manner through a series of callbacks.
The goal is to enhance CPU specific notifiers with a different notifier
chain that executes callbacks defined to put the system into low-power
states (C-state). The callback must
This patch adds the code required to allocate and populate page tables
that are needed by save/restore code to deal with MMU off/on
transactions.
MMU is enabled early in the resume path which allows to call into
Linux subsystems with init_mm virtual mappings (cloned at boot).
Current thread page
NOTE: This toy locking algorithm is there waiting for a warm-boot protocol
to be defined for ARM SMP platforms. It is there to prevent races
that will never show up in real platforms (ie multiple CPUs coming
out of low-power at once from cluster shutdown with no HW/SW control
so that they might try
This patch provides all the functions required to manage
platform initialization, context save/restore and power entry/exit
for A9, A8, A5 ARM processors.
It builds on the infrastructure laid out by the patchset and aims
at keeping all v7 code in one single place.
The code relies on common suspen
This patch introduces a simple infrastructure to initialize
save/restore at run-time depending on the HW processor id.
It defines an array of structures containing function pointers that
can be called to manage low power state.
The arch pointer is initialized at run-time in lookup_arch() on id ma
In order to define a common idle interface for the kernel
to enter low power modes, this patch provides include files
and code that manages OS calls for low power entry and exit.
In ARM world processor HW is categorized as CPU and Cluster.
Corresponding states defined by this common IF are:
C-st
This patch provides the code infrastructure needed to maintain
a generic per-cpu architecture implementation of idle code.
sr_platform.c :
- code manages patchset initialization and memory management
sr_context.c:
- code initializes run-time context save/restore generic
From: Colin Cross
When the cpu is powered down in a low power mode, the vfp
registers may be reset.
This patch uses CPU_PM_ENTER and CPU_PM_EXIT notifiers to save
and restore the cpu's vfp registers.
Signed-off-by: Colin Cross
---
arch/arm/vfp/vfpmodule.c | 40 ++
From: Colin Cross
During some CPU power modes entered during idle, hotplug and
suspend, peripherals located in the CPU power domain, such as
the GIC and VFP, may be powered down. Add a notifier chain
that allows drivers for those peripherals to be notified
before and after they may be reset.
Si
From: Will Deacon
This patch adds simple definitions of cpu_reset for ARMv6 and ARMv7
cores, which disable the MMU via the SCTLR.
Signed-off-by: Will Deacon
---
arch/arm/mm/proc-v6.S |5 +
arch/arm/mm/proc-v7.S |7 +++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --g
This patchset is a first attempt at providing a consolidation of idle
code for the ARM processor architecture and a request for comment on
the provided methodology.
It relies and it is based on kernel features such as suspend/resume,
pm notifiers and common code for cpu_reset().
It integrates late
From: Colin Cross
When the cpu is powered down in a low power mode, the gic cpu
interface may be reset, and when the cpu complex is powered
down, the gic distributor may also be reset.
This patch uses CPU_PM_ENTER and CPU_PM_EXIT notifiers to save
and restore the gic cpu interface registers, and
Hello,
Jenkins upgrade to 1.419 went well, downtime was ~5mins,
few builds after that went ok. Let me know if you notice anything
suspicious.
On Tue, 5 Jul 2011 16:39:26 +0300
Paul Sokolovsky wrote:
> Hello,
>
> I'd like to upgrade Jenkins on the production to be close to sandboxes
> (which a
Andy Green writes:
>>> They have a single wakelock to cover delayed work in there, however
>>> there are multiple delayed works possible to be queued, eg delayed
>>> disable and delayed detect actions, and although they wrap scheduling
>>> the delayed work to also lock the wakelock, they don't wr
On 07/07/2011 10:43 AM, Somebody in the thread at some point said:
Not certain you meant this by "handled immediately" but to be clear
cancel_delayed_work() deletes the timer that creates the delay, and
stops the work ever from being executed. In that case the wakelock
will be left locked with
Hello Michael,
On Thu, 07 Jul 2011 09:36:38 +1200
Michael Hudson-Doyle wrote:
> On Wed, 06 Jul 2011 15:26:57 -0400, James Westby
> wrote:
> > On Wed, 6 Jul 2011 22:00:24 +0300, Paul Sokolovsky
> > wrote:
> > > It would be better just to upgrade regularly,
> > > because there're indeed nice fix
On 07/07/2011 09:37 AM, Somebody in the thread at some point said:
Hi Kan-Ru -
They have a single wakelock to cover delayed work in there, however
there are multiple delayed works possible to be queued, eg delayed
disable and delayed detect actions, and although they wrap scheduling
the delayed
Hi Andy,
Andy Green writes:
> Hi -
>
> Yesterday I studied suspend status on 3.0 kernel for Panda, for mem
> suspend it's working pretty well in Ubuntu case, desktop is coming
> back up woken by USB keyboard action, WLAN is workable after
> reassociation.
>
> However in Android case, the same tr
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