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Merge tag 'v3.4-rc5' into for-3.5/core
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The core branch is behind driver commits that we want to build
on for 3.5, hence I'm pulling in a later -rc.

Linux 3.4-rc5

Conflicts:
	Documentation/feature-removal-schedule.txt

Signed-off-by: Jens Axboe <[email protected]>
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axboe committed May 1, 2012
2 parents bd1a68b + 69964ea commit 0b7877d
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14 changes: 7 additions & 7 deletions Documentation/ABI/stable/sysfs-driver-usb-usbtmc
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@@ -1,5 +1,5 @@
What: /sys/bus/usb/drivers/usbtmc/devices/*/interface_capabilities
What: /sys/bus/usb/drivers/usbtmc/devices/*/device_capabilities
What: /sys/bus/usb/drivers/usbtmc/*/interface_capabilities
What: /sys/bus/usb/drivers/usbtmc/*/device_capabilities
Date: August 2008
Contact: Greg Kroah-Hartman <[email protected]>
Description:
Expand All @@ -12,8 +12,8 @@ Description:
The files are read only.


What: /sys/bus/usb/drivers/usbtmc/devices/*/usb488_interface_capabilities
What: /sys/bus/usb/drivers/usbtmc/devices/*/usb488_device_capabilities
What: /sys/bus/usb/drivers/usbtmc/*/usb488_interface_capabilities
What: /sys/bus/usb/drivers/usbtmc/*/usb488_device_capabilities
Date: August 2008
Contact: Greg Kroah-Hartman <[email protected]>
Description:
Expand All @@ -27,7 +27,7 @@ Description:
The files are read only.


What: /sys/bus/usb/drivers/usbtmc/devices/*/TermChar
What: /sys/bus/usb/drivers/usbtmc/*/TermChar
Date: August 2008
Contact: Greg Kroah-Hartman <[email protected]>
Description:
Expand All @@ -40,7 +40,7 @@ Description:
sent to the device or not.


What: /sys/bus/usb/drivers/usbtmc/devices/*/TermCharEnabled
What: /sys/bus/usb/drivers/usbtmc/*/TermCharEnabled
Date: August 2008
Contact: Greg Kroah-Hartman <[email protected]>
Description:
Expand All @@ -51,7 +51,7 @@ Description:
published by the USB-IF.


What: /sys/bus/usb/drivers/usbtmc/devices/*/auto_abort
What: /sys/bus/usb/drivers/usbtmc/*/auto_abort
Date: August 2008
Contact: Greg Kroah-Hartman <[email protected]>
Description:
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18 changes: 18 additions & 0 deletions Documentation/ABI/testing/sysfs-block-rssd
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@@ -0,0 +1,18 @@
What: /sys/block/rssd*/registers
Date: March 2012
KernelVersion: 3.3
Contact: Asai Thambi S P <[email protected]>
Description: This is a read-only file. Dumps below driver information and
hardware registers.
- S ACTive
- Command Issue
- Allocated
- Completed
- PORT IRQ STAT
- HOST IRQ STAT

What: /sys/block/rssd*/status
Date: April 2012
KernelVersion: 3.4
Contact: Asai Thambi S P <[email protected]>
Description: This is a read-only file. Indicates the status of the device.
19 changes: 19 additions & 0 deletions Documentation/ABI/testing/sysfs-bus-hsi
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@@ -0,0 +1,19 @@
What: /sys/bus/hsi
Date: April 2012
KernelVersion: 3.4
Contact: Carlos Chinea <[email protected]>
Description:
High Speed Synchronous Serial Interface (HSI) is a
serial interface mainly used for connecting application
engines (APE) with cellular modem engines (CMT) in cellular
handsets.
The bus will be populated with devices (hsi_clients) representing
the protocols available in the system. Bus drivers implement
those protocols.

What: /sys/bus/hsi/devices/.../modalias
Date: April 2012
KernelVersion: 3.4
Contact: Carlos Chinea <[email protected]>
Description: Stores the same MODALIAS value emitted by uevent
Format: hsi:<hsi_client device name>
8 changes: 8 additions & 0 deletions Documentation/ABI/testing/sysfs-cfq-target-latency
Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
What: /sys/block/<device>/iosched/target_latency
Date: March 2012
contact: Tao Ma <[email protected]>
Description:
The /sys/block/<device>/iosched/target_latency only exists
when the user sets cfq to /sys/block/<device>/scheduler.
It contains an estimated latency time for the cfq. cfq will
use it to calculate the time slice used for every task.
18 changes: 18 additions & 0 deletions Documentation/DMA-attributes.txt
Original file line number Diff line number Diff line change
Expand Up @@ -31,3 +31,21 @@ may be weakly ordered, that is that reads and writes may pass each other.
Since it is optional for platforms to implement DMA_ATTR_WEAK_ORDERING,
those that do not will simply ignore the attribute and exhibit default
behavior.

DMA_ATTR_WRITE_COMBINE
----------------------

DMA_ATTR_WRITE_COMBINE specifies that writes to the mapping may be
buffered to improve performance.

Since it is optional for platforms to implement DMA_ATTR_WRITE_COMBINE,
those that do not will simply ignore the attribute and exhibit default
behavior.

DMA_ATTR_NON_CONSISTENT
-----------------------

DMA_ATTR_NON_CONSISTENT lets the platform to choose to return either
consistent or non-consistent memory as it sees fit. By using this API,
you are guaranteeing to the platform that you have all the correct and
necessary sync points for this memory in the driver.
17 changes: 17 additions & 0 deletions Documentation/DocBook/device-drivers.tmpl
Original file line number Diff line number Diff line change
Expand Up @@ -446,4 +446,21 @@ X!Idrivers/video/console/fonts.c
!Edrivers/i2c/i2c-core.c
</chapter>

<chapter id="hsi">
<title>High Speed Synchronous Serial Interface (HSI)</title>

<para>
High Speed Synchronous Serial Interface (HSI) is a
serial interface mainly used for connecting application
engines (APE) with cellular modem engines (CMT) in cellular
handsets.

HSI provides multiplexing for up to 16 logical channels,
low-latency and full duplex communication.
</para>

!Iinclude/linux/hsi/hsi.h
!Edrivers/hsi/hsi.c
</chapter>

</book>
2 changes: 1 addition & 1 deletion Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
<refentry id="V4L2-PIX-FMT-NV12M">
<refmeta>
<refentrytitle>V4L2_PIX_FMT_NV12M ('NV12M')</refentrytitle>
<refentrytitle>V4L2_PIX_FMT_NV12M ('NM12')</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
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2 changes: 1 addition & 1 deletion Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
<refentry id="V4L2-PIX-FMT-YUV420M">
<refmeta>
<refentrytitle>V4L2_PIX_FMT_YUV420M ('YU12M')</refentrytitle>
<refentrytitle>V4L2_PIX_FMT_YUV420M ('YM12')</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
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2 changes: 1 addition & 1 deletion Documentation/cgroups/cpusets.txt
Original file line number Diff line number Diff line change
Expand Up @@ -217,7 +217,7 @@ and name space for cpusets, with a minimum of additional kernel code.

The cpus and mems files in the root (top_cpuset) cpuset are
read-only. The cpus file automatically tracks the value of
cpu_online_map using a CPU hotplug notifier, and the mems file
cpu_online_mask using a CPU hotplug notifier, and the mems file
automatically tracks the value of node_states[N_HIGH_MEMORY]--i.e.,
nodes with memory--using the cpuset_track_online_nodes() hook.

Expand Down
5 changes: 2 additions & 3 deletions Documentation/cgroups/memory.txt
Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,7 @@ Current Status: linux-2.6.34-mmotm(development version of 2010/April)

Features:
- accounting anonymous pages, file caches, swap caches usage and limiting them.
- private LRU and reclaim routine. (system's global LRU and private LRU
work independently from each other)
- pages are linked to per-memcg LRU exclusively, and there is no global LRU.
- optionally, memory+swap usage can be accounted and limited.
- hierarchical accounting
- soft limit
Expand Down Expand Up @@ -154,7 +153,7 @@ updated. page_cgroup has its own LRU on cgroup.
2.2.1 Accounting details

All mapped anon pages (RSS) and cache pages (Page Cache) are accounted.
Some pages which are never reclaimable and will not be on the global LRU
Some pages which are never reclaimable and will not be on the LRU
are not accounted. We just account pages under usual VM management.

RSS pages are accounted at page_fault unless they've already been accounted
Expand Down
22 changes: 11 additions & 11 deletions Documentation/cpu-hotplug.txt
Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ maxcpus=n Restrict boot time cpus to n. Say if you have 4 cpus, using
other cpus later online, read FAQ's for more info.

additional_cpus=n (*) Use this to limit hotpluggable cpus. This option sets
cpu_possible_map = cpu_present_map + additional_cpus
cpu_possible_mask = cpu_present_mask + additional_cpus

cede_offline={"off","on"} Use this option to disable/enable putting offlined
processors to an extended H_CEDE state on
Expand All @@ -64,33 +64,33 @@ should only rely on this to count the # of cpus, but *MUST* not rely
on the apicid values in those tables for disabled apics. In the event
BIOS doesn't mark such hot-pluggable cpus as disabled entries, one could
use this parameter "additional_cpus=x" to represent those cpus in the
cpu_possible_map.
cpu_possible_mask.

possible_cpus=n [s390,x86_64] use this to set hotpluggable cpus.
This option sets possible_cpus bits in
cpu_possible_map. Thus keeping the numbers of bits set
cpu_possible_mask. Thus keeping the numbers of bits set
constant even if the machine gets rebooted.

CPU maps and such
-----------------
[More on cpumaps and primitive to manipulate, please check
include/linux/cpumask.h that has more descriptive text.]

cpu_possible_map: Bitmap of possible CPUs that can ever be available in the
cpu_possible_mask: Bitmap of possible CPUs that can ever be available in the
system. This is used to allocate some boot time memory for per_cpu variables
that aren't designed to grow/shrink as CPUs are made available or removed.
Once set during boot time discovery phase, the map is static, i.e no bits
are added or removed anytime. Trimming it accurately for your system needs
upfront can save some boot time memory. See below for how we use heuristics
in x86_64 case to keep this under check.

cpu_online_map: Bitmap of all CPUs currently online. Its set in __cpu_up()
cpu_online_mask: Bitmap of all CPUs currently online. Its set in __cpu_up()
after a cpu is available for kernel scheduling and ready to receive
interrupts from devices. Its cleared when a cpu is brought down using
__cpu_disable(), before which all OS services including interrupts are
migrated to another target CPU.

cpu_present_map: Bitmap of CPUs currently present in the system. Not all
cpu_present_mask: Bitmap of CPUs currently present in the system. Not all
of them may be online. When physical hotplug is processed by the relevant
subsystem (e.g ACPI) can change and new bit either be added or removed
from the map depending on the event is hot-add/hot-remove. There are currently
Expand All @@ -99,22 +99,22 @@ at which time hotplug is disabled.

You really dont need to manipulate any of the system cpu maps. They should
be read-only for most use. When setting up per-cpu resources almost always use
cpu_possible_map/for_each_possible_cpu() to iterate.
cpu_possible_mask/for_each_possible_cpu() to iterate.

Never use anything other than cpumask_t to represent bitmap of CPUs.

#include <linux/cpumask.h>

for_each_possible_cpu - Iterate over cpu_possible_map
for_each_online_cpu - Iterate over cpu_online_map
for_each_present_cpu - Iterate over cpu_present_map
for_each_possible_cpu - Iterate over cpu_possible_mask
for_each_online_cpu - Iterate over cpu_online_mask
for_each_present_cpu - Iterate over cpu_present_mask
for_each_cpu_mask(x,mask) - Iterate over some random collection of cpu mask.

#include <linux/cpu.h>
get_online_cpus() and put_online_cpus():

The above calls are used to inhibit cpu hotplug operations. While the
cpu_hotplug.refcount is non zero, the cpu_online_map will not change.
cpu_hotplug.refcount is non zero, the cpu_online_mask will not change.
If you merely need to avoid cpus going away, you could also use
preempt_disable() and preempt_enable() for those sections.
Just remember the critical section cannot call any
Expand Down
10 changes: 5 additions & 5 deletions Documentation/devicetree/bindings/mtd/atmel-nand.txt
Original file line number Diff line number Diff line change
Expand Up @@ -27,13 +27,13 @@ nand0: nand@40000000,0 {
reg = <0x40000000 0x10000000
0xffffe800 0x200
>;
atmel,nand-addr-offset = <21>;
atmel,nand-cmd-offset = <22>;
atmel,nand-addr-offset = <21>; /* ale */
atmel,nand-cmd-offset = <22>; /* cle */
nand-on-flash-bbt;
nand-ecc-mode = "soft";
gpios = <&pioC 13 0
&pioC 14 0
0
gpios = <&pioC 13 0 /* rdy */
&pioC 14 0 /* nce */
0 /* cd */
>;
partition@0 {
...
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29 changes: 29 additions & 0 deletions Documentation/devicetree/bindings/regulator/anatop-regulator.txt
Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
Anatop Voltage regulators

Required properties:
- compatible: Must be "fsl,anatop-regulator"
- anatop-reg-offset: Anatop MFD register offset
- anatop-vol-bit-shift: Bit shift for the register
- anatop-vol-bit-width: Number of bits used in the register
- anatop-min-bit-val: Minimum value of this register
- anatop-min-voltage: Minimum voltage of this regulator
- anatop-max-voltage: Maximum voltage of this regulator

Any property defined as part of the core regulator
binding, defined in regulator.txt, can also be used.

Example:

regulator-vddpu {
compatible = "fsl,anatop-regulator";
regulator-name = "vddpu";
regulator-min-microvolt = <725000>;
regulator-max-microvolt = <1300000>;
regulator-always-on;
anatop-reg-offset = <0x140>;
anatop-vol-bit-shift = <9>;
anatop-vol-bit-width = <5>;
anatop-min-bit-val = <1>;
anatop-min-voltage = <725000>;
anatop-max-voltage = <1300000>;
};
16 changes: 8 additions & 8 deletions Documentation/feature-removal-schedule.txt
Original file line number Diff line number Diff line change
Expand Up @@ -6,14 +6,6 @@ be removed from this file.

---------------------------

What: x86 floppy disable_hlt
When: 2012
Why: ancient workaround of dubious utility clutters the
code used by everybody else.
Who: Len Brown <[email protected]>

---------------------------

What: CONFIG_APM_CPU_IDLE, and its ability to call APM BIOS in idle
When: 2012
Why: This optional sub-feature of APM is of dubious reliability,
Expand Down Expand Up @@ -548,3 +540,11 @@ Why: Remount currently allows changing bound subsystems and
release_agent. Rebinding is hardly useful as it only works
when the hierarchy is empty and release_agent itself should be
replaced with conventional fsnotify.

----------------------------

What: setitimer accepts user NULL pointer (value)
When: 3.6
Why: setitimer is not returning -EFAULT if user pointer is NULL. This
violates the spec.
Who: Sasikantha Babu <[email protected]>
2 changes: 1 addition & 1 deletion Documentation/filesystems/vfs.txt
Original file line number Diff line number Diff line change
Expand Up @@ -114,7 +114,7 @@ members are defined:
struct file_system_type {
const char *name;
int fs_flags;
struct dentry (*mount) (struct file_system_type *, int,
struct dentry *(*mount) (struct file_system_type *, int,
const char *, void *);
void (*kill_sb) (struct super_block *);
struct module *owner;
Expand Down
2 changes: 1 addition & 1 deletion Documentation/hwmon/k10temp
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ Supported chips:
Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
* AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series)
* AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)
* AMD Family 15h processors: "Bulldozer"
* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity"

Prefix: 'k10temp'
Addresses scanned: PCI space
Expand Down
1 change: 1 addition & 0 deletions Documentation/ioctl/ioctl-number.txt
Original file line number Diff line number Diff line change
Expand Up @@ -225,6 +225,7 @@ Code Seq#(hex) Include File Comments
'j' 00-3F linux/joystick.h
'k' 00-0F linux/spi/spidev.h conflict!
'k' 00-05 video/kyro.h conflict!
'k' 10-17 linux/hsi/hsi_char.h HSI character device
'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system
<http://web.archive.org/web/*/http://mikonos.dia.unisa.it/tcfs>
'l' 40-7F linux/udf_fs_i.h in development:
Expand Down
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