[GIT pull] ACPI & cpuidle power management patches for Linux 3.2-merge

From: Len Brown
Date: Mon Nov 07 2011 - 12:54:12 EST

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Hi Linus,

please pull from:

git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git release

This will update the files shown below.

Note that linux-next will not include the cpuidle patch below that
touches ARM until 11/7 -- though it has been built and tested
by some ARM people previously.

thanks!

Len Brown
Intel Open Source Technology Center

ps. individual patches are available on linux-acpi@xxxxxxxxxxxxxxx

Documentation/ABI/stable/sysfs-acpi-pmprofile | 22 +++
arch/arm/mach-at91/cpuidle.c | 41 +++--
arch/arm/mach-davinci/cpuidle.c | 51 +++---
arch/arm/mach-exynos4/cpuidle.c | 30 ++--
arch/arm/mach-kirkwood/cpuidle.c | 42 +++--
arch/arm/mach-omap2/cpuidle34xx.c | 133 +++++++++-----
arch/sh/kernel/cpu/shmobile/cpuidle.c | 28 ++-
arch/x86/platform/mrst/pmu.c | 2 +-
drivers/acpi/acpica/hwregs.c | 11 +-
drivers/acpi/atomicio.c | 2 +-
drivers/acpi/bus.c | 8 +-
drivers/acpi/processor_driver.c | 20 +--
drivers/acpi/processor_idle.c | 251 ++++++++++++++++++++-----
drivers/acpi/scan.c | 3 +-
drivers/acpi/sysfs.c | 14 ++-
drivers/cpuidle/cpuidle.c | 86 +++------
drivers/cpuidle/driver.c | 25 +++
drivers/cpuidle/governors/ladder.c | 41 +++-
drivers/cpuidle/governors/menu.c | 29 ++--
drivers/cpuidle/sysfs.c | 22 ++-
drivers/idle/intel_idle.c | 130 ++++++++++---
drivers/pnp/pnpacpi/rsparser.c | 62 ++-----
drivers/thermal/thermal_sys.c | 4 +-
include/acpi/acpi_drivers.h | 2 +-
include/acpi/actypes.h | 1 -
include/acpi/processor.h | 1 +
include/linux/cpuidle.h | 52 +++---
tools/power/x86/turbostat/turbostat.c | 28 ++--
28 files changed, 729 insertions(+), 412 deletions(-)
create mode 100644 Documentation/ABI/stable/sysfs-acpi-pmprofile

through these commits:

Bart Van Assche (1):
ACPI: Fix CONFIG_ACPI_DOCK=n compiler warning

Deepthi Dharwar (4):
cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state
cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare()
cpuidle: Split cpuidle_state structure and move per-cpu statistics fields
cpuidle: Single/Global registration of idle states

Len Brown (2):
tools/power turbostat: less verbose debugging
mrst pmu: update comment

Rafael J. Wysocki (2):
ACPI: Drop ACPI_NO_HARDWARE_INIT
thermal: Prevent polling from happening during system suspend

Rakib Mullick (1):
ACPI: Fix possible recursive locking in hwregs.c

Thomas Meyer (1):
ACPI: use kstrdup()

Thomas Renninger (1):
ACPI: Export FADT pm_profile integer value to userspace

Tony Luck (1):
ACPI atomicio: Convert width in bits to bytes in __acpi_ioremap_fast()

Witold Szczeponik (1):
PNPACPI: Simplify disabled resource registration

with this log:

commit efb90582c575084723cc14302c1300cb26c7e01f
Merge: e751b75 46bcfad 22f4521 aeae1e9
Author: Len Brown <len.brown@xxxxxxxxx>
Date: Sun Nov 6 22:14:50 2011 -0500

Merge branches 'acpi', 'idle', 'mrst-pmu' and 'pm-tools' into next

commit e751b759e82629798c4a5e4a87eb3a30c0510154
Merge: 3bf3f8b f7f71cf c1056b4 362b646 18fd470
Author: Len Brown <len.brown@xxxxxxxxx>
Date: Sun Nov 6 22:10:14 2011 -0500

Merge branches 'atomic-io', 'lockdep', 'misc', 'pm-profile' and 'pnp-cleanup' into acpi

commit 46bcfad7a819bd17ac4e831b04405152d59784ab
Author: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Date: Fri Oct 28 16:20:42 2011 +0530

cpuidle: Single/Global registration of idle states

This patch makes the cpuidle_states structure global (single copy)
instead of per-cpu. The statistics needed on per-cpu basis
by the governor are kept per-cpu. This simplifies the cpuidle
subsystem as state registration is done by single cpu only.
Having single copy of cpuidle_states saves memory. Rare case
of asymmetric C-states can be handled within the cpuidle driver
and architectures such as POWER do not have asymmetric C-states.

Having single/global registration of all the idle states,
dynamic C-state transitions on x86 are handled by
the boot cpu. Here, the boot cpu would disable all the devices,
re-populate the states and later enable all the devices,
irrespective of the cpu that would receive the notification first.

Reference:
https://lkml.org/lkml/2011/4/25/83

Signed-off-by: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Trinabh Gupta <g.trinabh@xxxxxxxxx>
Tested-by: Jean Pihet <j-pihet@xxxxxx>
Reviewed-by: Kevin Hilman <khilman@xxxxxx>
Acked-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Acked-by: Kevin Hilman <khilman@xxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 4202735e8ab6ecfb0381631a0d0b58fefe0bd4e2
Author: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Date: Fri Oct 28 16:20:33 2011 +0530

cpuidle: Split cpuidle_state structure and move per-cpu statistics fields

This is the first step towards global registration of cpuidle
states. The statistics used primarily by the governor are per-cpu
and have to be split from rest of the fields inside cpuidle_state,
which would be made global i.e. single copy. The driver_data field
is also per-cpu and moved.

Signed-off-by: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Trinabh Gupta <g.trinabh@xxxxxxxxx>
Tested-by: Jean Pihet <j-pihet@xxxxxx>
Reviewed-by: Kevin Hilman <khilman@xxxxxx>
Acked-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Acked-by: Kevin Hilman <khilman@xxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit b25edc42bfb9602f0503474b2c94701d5536ce60
Author: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Date: Fri Oct 28 16:20:24 2011 +0530

cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare()

The cpuidle_device->prepare() mechanism causes updates to the
cpuidle_state[].flags, setting and clearing CPUIDLE_FLAG_IGNORE
to tell the governor not to chose a state on a per-cpu basis at
run-time. State demotion is now handled by the driver and it returns
the actual state entered. Hence, this mechanism is not required.
Also this removes per-cpu flags from cpuidle_state enabling
it to be made global.

Reference:
https://lkml.org/lkml/2011/3/25/52

Signed-off-by: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxx>
Signed-off-by: Trinabh Gupta <g.trinabh@xxxxxxxxx>
Tested-by: Jean Pihet <j-pihet@xxxxxx>
Acked-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Reviewed-by: Kevin Hilman <khilman@xxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit e978aa7d7d57d04eb5f88a7507c4fb98577def77
Author: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Date: Fri Oct 28 16:20:09 2011 +0530

cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state

Cpuidle governor only suggests the state to enter using the
governor->select() interface, but allows the low level driver to
override the recommended state. The actual entered state
may be different because of software or hardware demotion. Software
demotion is done by the back-end cpuidle driver and can be accounted
correctly. Current cpuidle code uses last_state field to capture the
actual state entered and based on that updates the statistics for the
state entered.

Ideally the driver enter routine should update the counters,
and it should return the state actually entered rather than the time
spent there. The generic cpuidle code should simply handle where
the counters live in the sysfs namespace, not updating the counters.

Reference:
https://lkml.org/lkml/2011/3/25/52

Signed-off-by: Deepthi Dharwar <deepthi@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Trinabh Gupta <g.trinabh@xxxxxxxxx>
Tested-by: Jean Pihet <j-pihet@xxxxxx>
Reviewed-by: Kevin Hilman <khilman@xxxxxx>
Acked-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Acked-by: Kevin Hilman <khilman@xxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit c1056b42a87b59375f8f81a92ef029165f44fcce
Author: Bart Van Assche <bvanassche@xxxxxxx>
Date: Wed Nov 2 20:16:05 2011 +0100

ACPI: Fix CONFIG_ACPI_DOCK=n compiler warning

Recently the ACPI ops structs were constified but the inline version
of register_hotplug_dock_device() was overlooked (see also commit
9c8b04b, June 25 2011). Update the inline function
register_hotplug_dock_device() that is enabled with
CONFIG_ACPI_DOCK=n too. This patch fixes at least the following
compiler warnings:

drivers/ata/libata-acpi.c: In function .ata_acpi_associate.:
drivers/ata/libata-acpi.c:266:11: warning: passing argument 2 of .register_hotplug_dock_device. discards qualifiers from pointer target type
include/acpi/acpi_drivers.h:146:19: note: expected .struct acpi_dock_ops *. but argument is of type .const struct acpi_dock_ops *.
drivers/ata/libata-acpi.c:275:11: warning: passing argument 2 of .register_hotplug_dock_device. discards qualifiers from pointer target type
include/acpi/acpi_drivers.h:146:19: note: expected .struct acpi_dock_ops *. but argument is of type .const struct acpi_dock_ops *.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 362b646062b2073bd5c38efb42171d86e4f717e6
Author: Thomas Renninger <trenn@xxxxxxx>
Date: Fri Nov 4 03:33:46 2011 +0100

ACPI: Export FADT pm_profile integer value to userspace

There are a lot userspace approaches to detect the usage of the
platform (laptop, workstation, server, ...) and adjust kernel tunables
accordingly (io/process scheduler, power management, ...).

These approaches need constant maintaining and are ugly to implement
(detect PCMCIA controller -> laptop,
does not work on recent systems anymore, ...)
On ACPI systems there is an easy and reliable way (if implemented
in BIOS and most recent platforms have this value set).
-> export it to userspace.

Signed-off-by: Thomas Renninger <trenn@xxxxxxx>
Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 51e20d0e3a60cf46b52ee1af598a35834919ed27
Author: Rafael J. Wysocki <rjw@xxxxxxx>
Date: Sun Nov 6 14:21:38 2011 +0100

thermal: Prevent polling from happening during system suspend

The thermal driver should use a freezable workqueue to schedule
polling to prevent thermal_zone_device_update() from being run
during system suspend, when the devices it relies on may be inactive.
Make it use the system freezable workqueue for this purpose.

Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 4505a2015f4c4b2f21137cc3a6b7400b0f3e073e
Author: Rafael J. Wysocki <rjw@xxxxxxx>
Date: Sun Nov 6 14:20:42 2011 +0100

ACPI: Drop ACPI_NO_HARDWARE_INIT

ACPI_NO_HARDWARE_INIT is only used by acpi_early_init() and
acpi_bus_init() when calling acpi_enable_subsystem(), but
acpi_enable_subsystem() doesn't check that flag, so it can be
dropped.

Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 3bf3f8b19d2bfccc40f13c456bf339fd8f535ebc
Author: Luck, Tony <tony.luck@xxxxxxxxx>
Date: Fri Oct 21 14:42:55 2011 -0700

ACPI atomicio: Convert width in bits to bytes in __acpi_ioremap_fast()

Callers to __acpi_ioremap_fast() pass the bit_width that they found in the
acpi_generic_address structure. Convert from bits to bytes when passing to
__acpi_find_iomap() - as it wants to see bytes, not bits.

cc: stable@xxxxxxxxxx
Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 18fd470a48396c8795ba7256c5973e92ffa25cb3
Author: Witold Szczeponik <Witold.Szczeponik@xxxxxxx>
Date: Thu Oct 27 20:56:47 2011 +0200

PNPACPI: Simplify disabled resource registration

The attached patch simplifies 29df8d8f8702f0f53c1375015f09f04bc8d023c1. As
the "pnp_xxx" structs are not designed to cope with IORESOURCE_DISABLED, and
hence no code can test for this value, setting this value is actually a "no op"
and can be skipped altogether. It is sufficient to remove the checks for
"empty" resources and continue processing.

The patch is applied against 3.1.

Signed-off-by: Witold Szczeponik <Witold.Szczeponik@xxxxxxx>
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit f7f71cfbf0c276ee3d8d856d0f35a41aed997fa4
Author: Rakib Mullick <rakib.mullick@xxxxxxxxx>
Date: Sun Nov 6 21:18:17 2011 +0600

ACPI: Fix possible recursive locking in hwregs.c

Calling pm-suspend might trigger a recursive lock in it's code path.
In function acpi_hw_clear_acpi_status, acpi_os_acquire_lock holds
the lock acpi_gbl_hardware_lock before calling acpi_hw_register_write(),
then without releasing acpi_gbl_hardware_lock, this function calls
acpi_ev_walk_gpe_list, which tries to hold acpi_gbl_gpe_lock.
Both acpi_gbl_hardware_lock and acpi_gbl_gpe_lock are at same
lock-class and which might cause lock recursion deadlock.

Following patch fixes this scenario by just releasing
acpi_gbl_hardware_lock before calling acpi_ev_walk_gpe_list.

Changes since v0(https://lkml.org/lkml/2011/9/21/355):
- Fix changelog, thanks to Lin Ming.

Changes since v1 (https://lkml.org/lkml/2011/11/3/89):
- Update changelog and rename goto label, courtesy Srivatsa S. Bhat.

Signed-off-by: Rakib Mullick <rakib.mullick@xxxxxxxxx>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 581de59e8dff8eaa52809e768a585e9ef336aa4a
Author: Thomas Meyer <thomas@xxxxxxxx>
Date: Sat Aug 6 11:32:56 2011 +0200

ACPI: use kstrdup()

Use kstrdup rather than duplicating its implementation

The semantic patch that makes this output is available
in scripts/coccinelle/api/kstrdup.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@xxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit 22f4521d664030e417f41953e922f61c65f2e189
Author: Len Brown <len.brown@xxxxxxxxx>
Date: Fri Aug 12 00:13:47 2011 -0400

mrst pmu: update comment

referenced MeeGo, in particular, but really means Linux, in general.

Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

commit aeae1e92daec5a38b40ad12598b97501b675a381
Author: Len Brown <len.brown@xxxxxxxxx>
Date: Sun Jul 3 21:41:33 2011 -0400

tools/power turbostat: less verbose debugging

dump only the counters which are active

Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
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Next message: Guenter Roeck: "Re: [PATCH] IIO:hwmon interface client driver."
Previous message: Borislav Petkov: "Re: BAD APICID ?"
Next in thread: Linus Torvalds: "Re: [GIT pull] ACPI & cpuidle power management patches for Linux 3.2-merge"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]