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Merge remote branch 'alsa/fixes' into fix/hda
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Takashi Iwai committed Dec 21, 2009
2 parents f5de24b + 440b004 commit de8853b
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1 change: 1 addition & 0 deletions .gitignore
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*.elf
*.bin
*.gz
*.bz2
*.lzma
*.patch
*.gcno
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8 changes: 8 additions & 0 deletions Documentation/ABI/stable/sysfs-driver-qla2xxx
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What: /sys/bus/pci/drivers/qla2xxx/.../devices/*
Date: September 2009
Contact: QLogic Linux Driver <linux-driver@qlogic.com>
Description: qla2xxx-udev.sh currently looks for uevent CHANGE events to
signal a firmware-dump has been generated by the driver and is
ready for retrieval.
Users: qla2xxx-udev.sh. Proposed changes should be mailed to
linux-driver@qlogic.com
2 changes: 1 addition & 1 deletion Documentation/ABI/testing/procfs-diskstats
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Expand Up @@ -8,7 +8,7 @@ Description:
1 - major number
2 - minor mumber
3 - device name
4 - reads completed succesfully
4 - reads completed successfully
5 - reads merged
6 - sectors read
7 - time spent reading (ms)
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2 changes: 1 addition & 1 deletion Documentation/ABI/testing/sysfs-block
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Expand Up @@ -4,7 +4,7 @@ Contact: Jerome Marchand <jmarchan@redhat.com>
Description:
The /sys/block/<disk>/stat files displays the I/O
statistics of disk <disk>. They contain 11 fields:
1 - reads completed succesfully
1 - reads completed successfully
2 - reads merged
3 - sectors read
4 - time spent reading (ms)
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13 changes: 13 additions & 0 deletions Documentation/ABI/testing/sysfs-bus-usb
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Write a 1 to force the device to disconnect
(equivalent to unplugging a wired USB device).

What: /sys/bus/usb/drivers/.../remove_id
Date: November 2009
Contact: CHENG Renquan <rqcheng@smu.edu.sg>
Description:
Writing a device ID to this file will remove an ID
that was dynamically added via the new_id sysfs entry.
The format for the device ID is:
idVendor idProduct. After successfully
removing an ID, the driver will no longer support the
device. This is useful to ensure auto probing won't
match the driver to the device. For example:
# echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id
25 changes: 0 additions & 25 deletions Documentation/ABI/testing/sysfs-class-usb_host

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38 changes: 38 additions & 0 deletions Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
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What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_chid
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Write the CHID (16 space-separated hex octets) for this host controller.
This starts the host controller, allowing it to accept connection from
WUSB devices.

Set an all zero CHID to stop the host controller.

What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_trust_timeout
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Devices that haven't sent a WUSB packet to the host
within 'wusb_trust_timeout' ms are considered to have
disconnected and are removed. The default value of
4000 ms is the value required by the WUSB
specification.

Since this relates to security (specifically, the
lifetime of PTKs and GTKs) it should not be changed
from the default.

What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_phy_rate
Date: August 2009
KernelVersion: 2.6.32
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The maximum PHY rate to use for all connected devices.
This is only of limited use for testing and
development as the hardware's automatic rate
adaptation is better then this simple control.

Refer to [ECMA-368] section 10.3.1.1 for the value to
use.
18 changes: 0 additions & 18 deletions Documentation/ABI/testing/sysfs-devices-cache_disable

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189 changes: 189 additions & 0 deletions Documentation/ABI/testing/sysfs-devices-system-cpu
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What: /sys/devices/system/cpu/
Date: pre-git history
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description:
A collection of both global and individual CPU attributes

Individual CPU attributes are contained in subdirectories
named by the kernel's logical CPU number, e.g.:

/sys/devices/system/cpu/cpu#/

What: /sys/devices/system/cpu/sched_mc_power_savings
/sys/devices/system/cpu/sched_smt_power_savings
Date: June 2006
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Discover and adjust the kernel's multi-core scheduler support.

Possible values are:

0 - No power saving load balance (default value)
1 - Fill one thread/core/package first for long running threads
2 - Also bias task wakeups to semi-idle cpu package for power
savings

sched_mc_power_savings is dependent upon SCHED_MC, which is
itself architecture dependent.

sched_smt_power_savings is dependent upon SCHED_SMT, which
is itself architecture dependent.

The two files are independent of each other. It is possible
that one file may be present without the other.

Introduced by git commit 5c45bf27.


What: /sys/devices/system/cpu/kernel_max
/sys/devices/system/cpu/offline
/sys/devices/system/cpu/online
/sys/devices/system/cpu/possible
/sys/devices/system/cpu/present
Date: December 2008
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: CPU topology files that describe kernel limits related to
hotplug. Briefly:

kernel_max: the maximum cpu index allowed by the kernel
configuration.

offline: cpus that are not online because they have been
HOTPLUGGED off or exceed the limit of cpus allowed by the
kernel configuration (kernel_max above).

online: cpus that are online and being scheduled.

possible: cpus that have been allocated resources and can be
brought online if they are present.

present: cpus that have been identified as being present in
the system.

See Documentation/cputopology.txt for more information.


What: /sys/devices/system/cpu/probe
/sys/devices/system/cpu/release
Date: November 2009
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Dynamic addition and removal of CPU's. This is not hotplug
removal, this is meant complete removal/addition of the CPU
from the system.

probe: writes to this file will dynamically add a CPU to the
system. Information written to the file to add CPU's is
architecture specific.

release: writes to this file dynamically remove a CPU from
the system. Information writtento the file to remove CPU's
is architecture specific.

What: /sys/devices/system/cpu/cpu#/node
Date: October 2009
Contact: Linux memory management mailing list <linux-mm@kvack.org>
Description: Discover NUMA node a CPU belongs to

When CONFIG_NUMA is enabled, a symbolic link that points
to the corresponding NUMA node directory.

For example, the following symlink is created for cpu42
in NUMA node 2:

/sys/devices/system/cpu/cpu42/node2 -> ../../node/node2


What: /sys/devices/system/cpu/cpu#/topology/core_id
/sys/devices/system/cpu/cpu#/topology/core_siblings
/sys/devices/system/cpu/cpu#/topology/core_siblings_list
/sys/devices/system/cpu/cpu#/topology/physical_package_id
/sys/devices/system/cpu/cpu#/topology/thread_siblings
/sys/devices/system/cpu/cpu#/topology/thread_siblings_list
Date: December 2008
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: CPU topology files that describe a logical CPU's relationship
to other cores and threads in the same physical package.

One cpu# directory is created per logical CPU in the system,
e.g. /sys/devices/system/cpu/cpu42/.

Briefly, the files above are:

core_id: the CPU core ID of cpu#. Typically it is the
hardware platform's identifier (rather than the kernel's).
The actual value is architecture and platform dependent.

core_siblings: internal kernel map of cpu#'s hardware threads
within the same physical_package_id.

core_siblings_list: human-readable list of the logical CPU
numbers within the same physical_package_id as cpu#.

physical_package_id: physical package id of cpu#. Typically
corresponds to a physical socket number, but the actual value
is architecture and platform dependent.

thread_siblings: internel kernel map of cpu#'s hardware
threads within the same core as cpu#

thread_siblings_list: human-readable list of cpu#'s hardware
threads within the same core as cpu#

See Documentation/cputopology.txt for more information.


What: /sys/devices/system/cpu/cpuidle/current_driver
/sys/devices/system/cpu/cpuidle/current_governer_ro
Date: September 2007
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Discover cpuidle policy and mechanism

Various CPUs today support multiple idle levels that are
differentiated by varying exit latencies and power
consumption during idle.

Idle policy (governor) is differentiated from idle mechanism
(driver)

current_driver: displays current idle mechanism

current_governor_ro: displays current idle policy

See files in Documentation/cpuidle/ for more information.


What: /sys/devices/system/cpu/cpu#/cpufreq/*
Date: pre-git history
Contact: cpufreq@vger.kernel.org
Description: Discover and change clock speed of CPUs

Clock scaling allows you to change the clock speed of the
CPUs on the fly. This is a nice method to save battery
power, because the lower the clock speed, the less power
the CPU consumes.

There are many knobs to tweak in this directory.

See files in Documentation/cpu-freq/ for more information.

In particular, read Documentation/cpu-freq/user-guide.txt
to learn how to control the knobs.


What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X
Date: August 2008
KernelVersion: 2.6.27
Contact: mark.langsdorf@amd.com
Description: These files exist in every cpu's cache index directories.
There are currently 2 cache_disable_# files in each
directory. Reading from these files on a supported
processor will return that cache disable index value
for that processor and node. Writing to one of these
files will cause the specificed cache index to be disabled.

Currently, only AMD Family 10h Processors support cache index
disable, and only for their L3 caches. See the BIOS and
Kernel Developer's Guide at
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf
for formatting information and other details on the
cache index disable.
Users: joachim.deguara@amd.com
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