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r: 350993
b: refs/heads/master
c: a68d353
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  350991: 20c3b51
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Rafael J. Wysocki committed Feb 15, 2013
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 66f2fda93b67fa744d406e6dcf443f67bac204b6
refs/heads/master: a68d35323b091f51e0957313f0f871f187879143
13 changes: 13 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-devices-power_resources_D0
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What: /sys/devices/.../power_resources_D0/
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../power_resources_D0/ directory is only
present for device objects representing ACPI device nodes that
use ACPI power resources for power management.

If present, it contains symbolic links to device directories
representing ACPI power resources that need to be turned on for
the given device node to be in ACPI power state D0. The names
of the links are the same as the names of the directories they
point to.
14 changes: 14 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-devices-power_resources_D1
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What: /sys/devices/.../power_resources_D1/
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../power_resources_D1/ directory is only
present for device objects representing ACPI device nodes that
use ACPI power resources for power management and support ACPI
power state D1.

If present, it contains symbolic links to device directories
representing ACPI power resources that need to be turned on for
the given device node to be in ACPI power state D1. The names
of the links are the same as the names of the directories they
point to.
14 changes: 14 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-devices-power_resources_D2
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What: /sys/devices/.../power_resources_D2/
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../power_resources_D2/ directory is only
present for device objects representing ACPI device nodes that
use ACPI power resources for power management and support ACPI
power state D2.

If present, it contains symbolic links to device directories
representing ACPI power resources that need to be turned on for
the given device node to be in ACPI power state D2. The names
of the links are the same as the names of the directories they
point to.
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What: /sys/devices/.../power_resources_D3hot/
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../power_resources_D3hot/ directory is only
present for device objects representing ACPI device nodes that
use ACPI power resources for power management and support ACPI
power state D3hot.

If present, it contains symbolic links to device directories
representing ACPI power resources that need to be turned on for
the given device node to be in ACPI power state D3hot. The
names of the links are the same as the names of the directories
they point to.
20 changes: 20 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-devices-power_state
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What: /sys/devices/.../power_state
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../power_state attribute is only present for
device objects representing ACPI device nodes that provide power
management methods.

If present, it contains a string representing the current ACPI
power state of the given device node. Its possible values,
"D0", "D1", "D2", "D3hot", and "D3cold", reflect the power state
names defined by the ACPI specification (ACPI 4 and above).

If the device node uses shared ACPI power resources, this state
determines a list of power resources required not to be turned
off. However, some power resources needed by the device node in
higher-power (lower-number) states may also be ON because of
some other devices using them at the moment.

This attribute is read-only.
23 changes: 23 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-devices-real_power_state
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What: /sys/devices/.../real_power_state
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../real_power_state attribute is only present
for device objects representing ACPI device nodes that provide
power management methods and use ACPI power resources for power
management.

If present, it contains a string representing the real ACPI
power state of the given device node as returned by the _PSC
control method or inferred from the configuration of power
resources. Its possible values, "D0", "D1", "D2", "D3hot", and
"D3cold", reflect the power state names defined by the ACPI
specification (ACPI 4 and above).

In some situations the value of this attribute may be different
from the value of the /sys/devices/.../power_state attribute for
the same device object. If that happens, some shared power
resources used by the device node are only ON because of some
other devices using them at the moment.

This attribute is read-only.
12 changes: 12 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-devices-resource_in_use
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What: /sys/devices/.../resource_in_use
Date: January 2013
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Description:
The /sys/devices/.../resource_in_use attribute is only present
for device objects representing ACPI power resources.

If present, it contains a number (0 or 1) representing the
current status of the given power resource (0 means that the
resource is not in use and therefore it has been turned off).

This attribute is read-only.
4 changes: 2 additions & 2 deletions trunk/Documentation/acpi/enumeration.txt
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Expand Up @@ -63,8 +63,8 @@ from ACPI tables.
Currently the kernel is not able to automatically determine from which ACPI
device it should make the corresponding platform device so we need to add
the ACPI device explicitly to acpi_platform_device_ids list defined in
drivers/acpi/scan.c. This limitation is only for the platform devices, SPI
and I2C devices are created automatically as described below.
drivers/acpi/acpi_platform.c. This limitation is only for the platform
devices, SPI and I2C devices are created automatically as described below.

SPI serial bus support
~~~~~~~~~~~~~~~~~~~~~~
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77 changes: 77 additions & 0 deletions trunk/Documentation/acpi/scan_handlers.txt
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ACPI Scan Handlers

Copyright (C) 2012, Intel Corporation
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

During system initialization and ACPI-based device hot-add, the ACPI namespace
is scanned in search of device objects that generally represent various pieces
of hardware. This causes a struct acpi_device object to be created and
registered with the driver core for every device object in the ACPI namespace
and the hierarchy of those struct acpi_device objects reflects the namespace
layout (i.e. parent device objects in the namespace are represented by parent
struct acpi_device objects and analogously for their children). Those struct
acpi_device objects are referred to as "device nodes" in what follows, but they
should not be confused with struct device_node objects used by the Device Trees
parsing code (although their role is analogous to the role of those objects).

During ACPI-based device hot-remove device nodes representing pieces of hardware
being removed are unregistered and deleted.

The core ACPI namespace scanning code in drivers/acpi/scan.c carries out basic
initialization of device nodes, such as retrieving common configuration
information from the device objects represented by them and populating them with
appropriate data, but some of them require additional handling after they have
been registered. For example, if the given device node represents a PCI host
bridge, its registration should cause the PCI bus under that bridge to be
enumerated and PCI devices on that bus to be registered with the driver core.
Similarly, if the device node represents a PCI interrupt link, it is necessary
to configure that link so that the kernel can use it.

Those additional configuration tasks usually depend on the type of the hardware
component represented by the given device node which can be determined on the
basis of the device node's hardware ID (HID). They are performed by objects
called ACPI scan handlers represented by the following structure:

struct acpi_scan_handler {
const struct acpi_device_id *ids;
struct list_head list_node;
int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
void (*detach)(struct acpi_device *dev);
};

where ids is the list of IDs of device nodes the given handler is supposed to
take care of, list_node is the hook to the global list of ACPI scan handlers
maintained by the ACPI core and the .attach() and .detach() callbacks are
executed, respectively, after registration of new device nodes and before
unregistration of device nodes the handler attached to previously.

The namespace scanning function, acpi_bus_scan(), first registers all of the
device nodes in the given namespace scope with the driver core. Then, it tries
to match a scan handler against each of them using the ids arrays of the
available scan handlers. If a matching scan handler is found, its .attach()
callback is executed for the given device node. If that callback returns 1,
that means that the handler has claimed the device node and is now responsible
for carrying out any additional configuration tasks related to it. It also will
be responsible for preparing the device node for unregistration in that case.
The device node's handler field is then populated with the address of the scan
handler that has claimed it.

If the .attach() callback returns 0, it means that the device node is not
interesting to the given scan handler and may be matched against the next scan
handler in the list. If it returns a (negative) error code, that means that
the namespace scan should be terminated due to a serious error. The error code
returned should then reflect the type of the error.

The namespace trimming function, acpi_bus_trim(), first executes .detach()
callbacks from the scan handlers of all device nodes in the given namespace
scope (if they have scan handlers). Next, it unregisters all of the device
nodes in that scope.

ACPI scan handlers can be added to the list maintained by the ACPI core with the
help of the acpi_scan_add_handler() function taking a pointer to the new scan
handler as an argument. The order in which scan handlers are added to the list
is the order in which they are matched against device nodes during namespace
scans.

All scan handles must be added to the list before acpi_bus_scan() is run for the
first time and they cannot be removed from it.
1 change: 1 addition & 0 deletions trunk/Documentation/device-mapper/dm-raid.txt
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Expand Up @@ -141,3 +141,4 @@ Version History
1.2.0 Handle creation of arrays that contain failed devices.
1.3.0 Added support for RAID 10
1.3.1 Allow device replacement/rebuild for RAID 10
1.3.2 Fix/improve redundancy checking for RAID10
Empty file modified trunk/Documentation/hid/hid-sensor.txt
100755 → 100644
Empty file.
2 changes: 1 addition & 1 deletion trunk/Documentation/kernel-parameters.txt
Original file line number Diff line number Diff line change
Expand Up @@ -2438,7 +2438,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
real-time workloads. It can also improve energy
efficiency for asymmetric multiprocessors.

rcu_nocbs_poll [KNL,BOOT]
rcu_nocb_poll [KNL,BOOT]
Rather than requiring that offloaded CPUs
(specified by rcu_nocbs= above) explicitly
awaken the corresponding "rcuoN" kthreads,
Expand Down
27 changes: 26 additions & 1 deletion trunk/Documentation/x86/boot.txt
Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,10 @@ Protocol 2.10: (Kernel 2.6.31) Added a protocol for relaxed alignment
Protocol 2.11: (Kernel 3.6) Added a field for offset of EFI handover
protocol entry point.

Protocol 2.12: (Kernel 3.8) Added the xloadflags field and extension fields
to struct boot_params for for loading bzImage and ramdisk
above 4G in 64bit.

**** MEMORY LAYOUT

The traditional memory map for the kernel loader, used for Image or
Expand Down Expand Up @@ -182,7 +186,7 @@ Offset Proto Name Meaning
0230/4 2.05+ kernel_alignment Physical addr alignment required for kernel
0234/1 2.05+ relocatable_kernel Whether kernel is relocatable or not
0235/1 2.10+ min_alignment Minimum alignment, as a power of two
0236/2 N/A pad3 Unused
0236/2 2.12+ xloadflags Boot protocol option flags
0238/4 2.06+ cmdline_size Maximum size of the kernel command line
023C/4 2.07+ hardware_subarch Hardware subarchitecture
0240/8 2.07+ hardware_subarch_data Subarchitecture-specific data
Expand Down Expand Up @@ -582,6 +586,27 @@ Protocol: 2.10+
misaligned kernel. Therefore, a loader should typically try each
power-of-two alignment from kernel_alignment down to this alignment.

Field name: xloadflags
Type: read
Offset/size: 0x236/2
Protocol: 2.12+

This field is a bitmask.

Bit 0 (read): XLF_KERNEL_64
- If 1, this kernel has the legacy 64-bit entry point at 0x200.

Bit 1 (read): XLF_CAN_BE_LOADED_ABOVE_4G
- If 1, kernel/boot_params/cmdline/ramdisk can be above 4G.

Bit 2 (read): XLF_EFI_HANDOVER_32
- If 1, the kernel supports the 32-bit EFI handoff entry point
given at handover_offset.

Bit 3 (read): XLF_EFI_HANDOVER_64
- If 1, the kernel supports the 64-bit EFI handoff entry point
given at handover_offset + 0x200.

Field name: cmdline_size
Type: read
Offset/size: 0x238/4
Expand Down
4 changes: 4 additions & 0 deletions trunk/Documentation/x86/zero-page.txt
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@ Offset Proto Name Meaning
090/010 ALL hd1_info hd1 disk parameter, OBSOLETE!!
0A0/010 ALL sys_desc_table System description table (struct sys_desc_table)
0B0/010 ALL olpc_ofw_header OLPC's OpenFirmware CIF and friends
0C0/004 ALL ext_ramdisk_image ramdisk_image high 32bits
0C4/004 ALL ext_ramdisk_size ramdisk_size high 32bits
0C8/004 ALL ext_cmd_line_ptr cmd_line_ptr high 32bits
140/080 ALL edid_info Video mode setup (struct edid_info)
1C0/020 ALL efi_info EFI 32 information (struct efi_info)
1E0/004 ALL alk_mem_k Alternative mem check, in KB
Expand All @@ -27,6 +30,7 @@ Offset Proto Name Meaning
1E9/001 ALL eddbuf_entries Number of entries in eddbuf (below)
1EA/001 ALL edd_mbr_sig_buf_entries Number of entries in edd_mbr_sig_buffer
(below)
1EF/001 ALL sentinel Used to detect broken bootloaders
290/040 ALL edd_mbr_sig_buffer EDD MBR signatures
2D0/A00 ALL e820_map E820 memory map table
(array of struct e820entry)
Expand Down
10 changes: 5 additions & 5 deletions trunk/MAINTAINERS
Original file line number Diff line number Diff line change
Expand Up @@ -1489,7 +1489,7 @@ AVR32 ARCHITECTURE
M: Haavard Skinnemoen <hskinnemoen@gmail.com>
M: Hans-Christian Egtvedt <egtvedt@samfundet.no>
W: http://www.atmel.com/products/AVR32/
W: http://avr32linux.org/
W: http://mirror.egtvedt.no/avr32linux.org/
W: http://avrfreaks.net/
S: Maintained
F: arch/avr32/
Expand Down Expand Up @@ -2966,7 +2966,7 @@ S: Maintained
F: drivers/net/ethernet/i825xx/eexpress.*

ETHERNET BRIDGE
M: Stephen Hemminger <shemminger@vyatta.com>
M: Stephen Hemminger <stephen@networkplumber.org>
L: bridge@lists.linux-foundation.org
L: netdev@vger.kernel.org
W: http://www.linuxfoundation.org/en/Net:Bridge
Expand Down Expand Up @@ -4905,7 +4905,7 @@ S: Maintained

MARVELL GIGABIT ETHERNET DRIVERS (skge/sky2)
M: Mirko Lindner <mlindner@marvell.com>
M: Stephen Hemminger <shemminger@vyatta.com>
M: Stephen Hemminger <stephen@networkplumber.org>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/net/ethernet/marvell/sk*
Expand Down Expand Up @@ -5180,7 +5180,7 @@ S: Supported
F: drivers/infiniband/hw/nes/

NETEM NETWORK EMULATOR
M: Stephen Hemminger <shemminger@vyatta.com>
M: Stephen Hemminger <stephen@networkplumber.org>
L: netem@lists.linux-foundation.org
S: Maintained
F: net/sched/sch_netem.c
Expand Down Expand Up @@ -7088,7 +7088,7 @@ F: include/uapi/sound/
F: sound/

SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEMENT (ASoC)
M: Liam Girdwood <lrg@ti.com>
M: Liam Girdwood <lgirdwood@gmail.com>
M: Mark Brown <broonie@opensource.wolfsonmicro.com>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
Expand Down
4 changes: 2 additions & 2 deletions trunk/Makefile
Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
VERSION = 3
PATCHLEVEL = 8
SUBLEVEL = 0
EXTRAVERSION = -rc5
NAME = Terrified Chipmunk
EXTRAVERSION = -rc7
NAME = Unicycling Gorilla

# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
Expand Down
25 changes: 23 additions & 2 deletions trunk/arch/arm/common/gic.c
Original file line number Diff line number Diff line change
Expand Up @@ -351,6 +351,25 @@ void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq)
irq_set_chained_handler(irq, gic_handle_cascade_irq);
}

static u8 gic_get_cpumask(struct gic_chip_data *gic)
{
void __iomem *base = gic_data_dist_base(gic);
u32 mask, i;

for (i = mask = 0; i < 32; i += 4) {
mask = readl_relaxed(base + GIC_DIST_TARGET + i);
mask |= mask >> 16;
mask |= mask >> 8;
if (mask)
break;
}

if (!mask)
pr_crit("GIC CPU mask not found - kernel will fail to boot.\n");

return mask;
}

static void __init gic_dist_init(struct gic_chip_data *gic)
{
unsigned int i;
Expand All @@ -369,7 +388,9 @@ static void __init gic_dist_init(struct gic_chip_data *gic)
/*
* Set all global interrupts to this CPU only.
*/
cpumask = readl_relaxed(base + GIC_DIST_TARGET + 0);
cpumask = gic_get_cpumask(gic);
cpumask |= cpumask << 8;
cpumask |= cpumask << 16;
for (i = 32; i < gic_irqs; i += 4)
writel_relaxed(cpumask, base + GIC_DIST_TARGET + i * 4 / 4);

Expand Down Expand Up @@ -400,7 +421,7 @@ static void __cpuinit gic_cpu_init(struct gic_chip_data *gic)
* Get what the GIC says our CPU mask is.
*/
BUG_ON(cpu >= NR_GIC_CPU_IF);
cpu_mask = readl_relaxed(dist_base + GIC_DIST_TARGET + 0);
cpu_mask = gic_get_cpumask(gic);
gic_cpu_map[cpu] = cpu_mask;

/*
Expand Down
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