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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Browse Source 
Conflicts:
	drivers/net/sfc/sfe4001.c
	drivers/net/wireless/libertas/cmd.c
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/rtl8187se/Kconfig
	drivers/staging/rtl8192e/Kconfig
This commit is contained in:
David S. Miller
2009-11-18 22:19:03 -08:00
parent dfef948ed2 66b00a7c93
commit 3505d1a9fd
1961 changed files with 85069 additions and 28712 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/ABI/testing/sysfs-class-usb_host → Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
+2 -2
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@@ -1,4 +1,4 @@
What: /sys/class/usb_host/usb_hostN/wusb_chid
What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_chid
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
@@ -9,7 +9,7 @@ Description:
Set an all zero CHID to stop the host controller.
What: /sys/class/usb_host/usb_hostN/wusb_trust_timeout
What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_trust_timeout
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Documentation/ABI/testing/sysfs-devices-cache_disable
-18
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@@ -1,18 +0,0 @@
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
Documentation/ABI/testing/sysfs-devices-system-cpu
+156
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@@ -0,0 +1,156 @@
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/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*/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
Documentation/cgroups/cgroups.txt
+9 -2
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@@ -227,7 +227,14 @@ as the path relative to the root of the cgroup file system.
Each cgroup is represented by a directory in the cgroup file system
containing the following files describing that cgroup:
- tasks: list of tasks (by pid) attached to that cgroup
- tasks: list of tasks (by pid) attached to that cgroup. This list
is not guaranteed to be sorted. Writing a thread id into this file
moves the thread into this cgroup.
- cgroup.procs: list of tgids in the cgroup. This list is not
guaranteed to be sorted or free of duplicate tgids, and userspace
should sort/uniquify the list if this property is required.
Writing a tgid into this file moves all threads with that tgid into
this cgroup.
- notify_on_release flag: run the release agent on exit?
- release_agent: the path to use for release notifications (this file
exists in the top cgroup only)
@@ -374,7 +381,7 @@ Now you want to do something with this cgroup.
In this directory you can find several files:
# ls
notify_on_release tasks
cgroup.procs notify_on_release tasks
(plus whatever files added by the attached subsystems)
Now attach your shell to this cgroup:
Documentation/cputopology.txt
+30 -17
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@@ -1,15 +1,28 @@
Export cpu topology info via sysfs. Items (attributes) are similar
Export CPU topology info via sysfs. Items (attributes) are similar
to /proc/cpuinfo.
1) /sys/devices/system/cpu/cpuX/topology/physical_package_id:
represent the physical package id of cpu X;
physical package id of cpuX. Typically corresponds to a physical
socket number, but the actual value is architecture and platform
dependent.
2) /sys/devices/system/cpu/cpuX/topology/core_id:
represent the cpu core id to cpu X;
the CPU core ID of cpuX. Typically it is the hardware platform's
identifier (rather than the kernel's). The actual value is
architecture and platform dependent.
3) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
represent the thread siblings to cpu X in the same core;
internel kernel map of cpuX's hardware threads within the same
core as cpuX
4) /sys/devices/system/cpu/cpuX/topology/core_siblings:
represent the thread siblings to cpu X in the same physical package;
internal kernel map of cpuX's hardware threads within the same
physical_package_id.
To implement it in an architecture-neutral way, a new source file,
drivers/base/topology.c, is to export the 4 attributes.
@@ -32,32 +45,32 @@ not defined by include/asm-XXX/topology.h:
3) thread_siblings: just the given CPU
4) core_siblings: just the given CPU
Additionally, cpu topology information is provided under
Additionally, CPU topology information is provided under
/sys/devices/system/cpu and includes these files. The internal
source for the output is in brackets ("[]").
kernel_max: the maximum cpu index allowed by the kernel configuration.
kernel_max: the maximum CPU index allowed by the kernel configuration.
[NR_CPUS-1]
offline: cpus that are not online because they have been
offline: CPUs that are not online because they have been
HOTPLUGGED off (see cpu-hotplug.txt) or exceed the limit
of cpus allowed by the kernel configuration (kernel_max
of CPUs allowed by the kernel configuration (kernel_max
above). [~cpu_online_mask + cpus >= NR_CPUS]
online: cpus that are online and being scheduled [cpu_online_mask]
online: CPUs that are online and being scheduled [cpu_online_mask]
possible: cpus that have been allocated resources and can be
possible: CPUs that have been allocated resources and can be
brought online if they are present. [cpu_possible_mask]
present: cpus that have been identified as being present in the
present: CPUs that have been identified as being present in the
system. [cpu_present_mask]
The format for the above output is compatible with cpulist_parse()
[see <linux/cpumask.h>]. Some examples follow.
In this example, there are 64 cpus in the system but cpus 32-63 exceed
In this example, there are 64 CPUs in the system but cpus 32-63 exceed
the kernel max which is limited to 0..31 by the NR_CPUS config option
being 32. Note also that cpus 2 and 4-31 are not online but could be
being 32. Note also that CPUs 2 and 4-31 are not online but could be
brought online as they are both present and possible.
kernel_max: 31
@@ -67,8 +80,8 @@ brought online as they are both present and possible.
present: 0-31
In this example, the NR_CPUS config option is 128, but the kernel was
started with possible_cpus=144. There are 4 cpus in the system and cpu2
was manually taken offline (and is the only cpu that can be brought
started with possible_cpus=144. There are 4 CPUs in the system and cpu2
was manually taken offline (and is the only CPU that can be brought
online.)
kernel_max: 127
@@ -78,4 +91,4 @@ online.)
present: 0-3
See cpu-hotplug.txt for the possible_cpus=NUM kernel start parameter
as well as more information on the various cpumask's.
as well as more information on the various cpumasks.
Documentation/debugging-via-ohci1394.txt
+4 -4
View File
@@ -64,14 +64,14 @@ be used to view the printk buffer of a remote machine, even with live update.
Bernhard Kaindl enhanced firescope to support accessing 64-bit machines
from 32-bit firescope and vice versa:
- ftp://ftp.suse.de/private/bk/firewire/tools/firescope-0.2.2.tar.bz2
- http://halobates.de/firewire/firescope-0.2.2.tar.bz2
and he implemented fast system dump (alpha version - read README.txt):
- ftp://ftp.suse.de/private/bk/firewire/tools/firedump-0.1.tar.bz2
- http://halobates.de/firewire/firedump-0.1.tar.bz2
There is also a gdb proxy for firewire which allows to use gdb to access
data which can be referenced from symbols found by gdb in vmlinux:
- ftp://ftp.suse.de/private/bk/firewire/tools/fireproxy-0.33.tar.bz2
- http://halobates.de/firewire/fireproxy-0.33.tar.bz2
The latest version of this gdb proxy (fireproxy-0.34) can communicate (not
yet stable) with kgdb over an memory-based communication module (kgdbom).
@@ -178,7 +178,7 @@ Step-by-step instructions for using firescope with early OHCI initialization:
Notes
-----
Documentation and specifications: ftp://ftp.suse.de/private/bk/firewire/docs
Documentation and specifications: http://halobates.de/firewire/
FireWire is a trademark of Apple Inc. - for more information please refer to:
http://en.wikipedia.org/wiki/FireWire
Documentation/feature-removal-schedule.txt
+38
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@@ -418,6 +418,14 @@ When: 2.6.33
Why: Should be implemented in userspace, policy daemon.
Who: Johannes Berg <johannes@sipsolutions.net>
---------------------------
What: CONFIG_INOTIFY
When: 2.6.33
Why: last user (audit) will be converted to the newer more generic
and more easily maintained fsnotify subsystem
Who: Eric Paris <eparis@redhat.com>
----------------------------
What: lock_policy_rwsem_* and unlock_policy_rwsem_* will not be
@@ -451,3 +459,33 @@ Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR
will also allow making ALSA OSS emulation independent of
sound_core. The dependency will be broken then too.
Who: Tejun Heo <tj@kernel.org>
----------------------------
What: Support for VMware's guest paravirtuliazation technique [VMI] will be
dropped.
When: 2.6.37 or earlier.
Why: With the recent innovations in CPU hardware acceleration technologies
from Intel and AMD, VMware ran a few experiments to compare these
techniques to guest paravirtualization technique on VMware's platform.
These hardware assisted virtualization techniques have outperformed the
performance benefits provided by VMI in most of the workloads. VMware
expects that these hardware features will be ubiquitous in a couple of
years, as a result, VMware has started a phased retirement of this
feature from the hypervisor. We will be removing this feature from the
Kernel too. Right now we are targeting 2.6.37 but can retire earlier if
technical reasons (read opportunity to remove major chunk of pvops)
arise.
Please note that VMI has always been an optimization and non-VMI kernels
still work fine on VMware's platform.
Latest versions of VMware's product which support VMI are,
Workstation 7.0 and VSphere 4.0 on ESX side, future maintainence
releases for these products will continue supporting VMI.
For more details about VMI retirement take a look at this,
http://blogs.vmware.com/guestosguide/2009/09/vmi-retirement.html
Who: Alok N Kataria <akataria@vmware.com>
----------------------------
Documentation/filesystems/ext3.txt
+12 -4
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@@ -123,10 +123,18 @@ resuid=n The user ID which may use the reserved blocks.
sb=n Use alternate superblock at this location.
quota
noquota
grpquota
usrquota
quota These options are ignored by the filesystem. They
noquota are used only by quota tools to recognize volumes
grpquota where quota should be turned on. See documentation
usrquota in the quota-tools package for more details
(http://sourceforge.net/projects/linuxquota).
jqfmt=<quota type> These options tell filesystem details about quota
usrjquota=<file> so that quota information can be properly updated
grpjquota=<file> during journal replay. They replace the above
quota options. See documentation in the quota-tools
package for more details
(http://sourceforge.net/projects/linuxquota).
bh (*) ext3 associates buffer heads to data pages to
nobh (a) cache disk block mapping information
Documentation/filesystems/ext4.txt
+7 -1
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@@ -134,9 +134,15 @@ ro Mount filesystem read only. Note that ext4 will
mount options "ro,noload" can be used to prevent
writes to the filesystem.
journal_checksum Enable checksumming of the journal transactions.
This will allow the recovery code in e2fsck and the
kernel to detect corruption in the kernel. It is a
compatible change and will be ignored by older kernels.
journal_async_commit Commit block can be written to disk without waiting
for descriptor blocks. If enabled older kernels cannot
mount the device.
mount the device. This will enable 'journal_checksum'
internally.
journal=update Update the ext4 file system's journal to the current
format.
Documentation/flexible-arrays.txt
+31 -10
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@@ -1,5 +1,5 @@
Using flexible arrays in the kernel
Last updated for 2.6.31
Last updated for 2.6.32
Jonathan Corbet <corbet@lwn.net>
Large contiguous memory allocations can be unreliable in the Linux kernel.
@@ -40,6 +40,13 @@ argument is passed directly to the internal memory allocation calls. With
the current code, using flags to ask for high memory is likely to lead to
notably unpleasant side effects.
It is also possible to define flexible arrays at compile time with:
DEFINE_FLEX_ARRAY(name, element_size, total);
This macro will result in a definition of an array with the given name; the
element size and total will be checked for validity at compile time.
Storing data into a flexible array is accomplished with a call to:
int flex_array_put(struct flex_array *array, unsigned int element_nr,
@@ -76,16 +83,30 @@ particular element has never been allocated.
Note that it is possible to get back a valid pointer for an element which
has never been stored in the array. Memory for array elements is allocated
one page at a time; a single allocation could provide memory for several
adjacent elements. The flexible array code does not know if a specific
element has been written; it only knows if the associated memory is
present. So a flex_array_get() call on an element which was never stored
in the array has the potential to return a pointer to random data. If the
caller does not have a separate way to know which elements were actually
stored, it might be wise, at least, to add GFP_ZERO to the flags argument
to ensure that all elements are zeroed.
adjacent elements. Flexible array elements are normally initialized to the
value FLEX_ARRAY_FREE (defined as 0x6c in <linux/poison.h>), so errors
involving that number probably result from use of unstored array entries.
Note that, if array elements are allocated with __GFP_ZERO, they will be
initialized to zero and this poisoning will not happen.
There is no way to remove a single element from the array. It is possible,
though, to remove all elements with a call to:
Individual elements in the array can be cleared with:
int flex_array_clear(struct flex_array *array, unsigned int element_nr);
This function will set the given element to FLEX_ARRAY_FREE and return
zero. If storage for the indicated element is not allocated for the array,
flex_array_clear() will return -EINVAL instead. Note that clearing an
element does not release the storage associated with it; to reduce the
allocated size of an array, call:
int flex_array_shrink(struct flex_array *array);
The return value will be the number of pages of memory actually freed.
This function works by scanning the array for pages containing nothing but
FLEX_ARRAY_FREE bytes, so (1) it can be expensive, and (2) it will not work
if the array's pages are allocated with __GFP_ZERO.
It is possible to remove all elements of an array with a call to:
void flex_array_free_parts(struct flex_array *array);
Documentation/hwmon/sysfs-interface
+56 -1
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@@ -353,10 +353,20 @@ power[1-*]_average Average power use
Unit: microWatt
RO
power[1-*]_average_interval Power use averaging interval
power[1-*]_average_interval Power use averaging interval. A poll
notification is sent to this file if the
hardware changes the averaging interval.
Unit: milliseconds
RW
power[1-*]_average_interval_max Maximum power use averaging interval
Unit: milliseconds
RO
power[1-*]_average_interval_min Minimum power use averaging interval
Unit: milliseconds
RO
power[1-*]_average_highest Historical average maximum power use
Unit: microWatt
RO
@@ -365,6 +375,18 @@ power[1-*]_average_lowest Historical average minimum power use
Unit: microWatt
RO
power[1-*]_average_max A poll notification is sent to
power[1-*]_average when power use
rises above this value.
Unit: microWatt
RW
power[1-*]_average_min A poll notification is sent to
power[1-*]_average when power use
sinks below this value.
Unit: microWatt
RW
power[1-*]_input Instantaneous power use
Unit: microWatt
RO
@@ -381,6 +403,39 @@ power[1-*]_reset_history Reset input_highest, input_lowest,
average_highest and average_lowest.
WO
power[1-*]_accuracy Accuracy of the power meter.
Unit: Percent
RO
power[1-*]_alarm 1 if the system is drawing more power than the
cap allows; 0 otherwise. A poll notification is
sent to this file when the power use exceeds the
cap. This file only appears if the cap is known
to be enforced by hardware.
RO
power[1-*]_cap If power use rises above this limit, the
system should take action to reduce power use.
A poll notification is sent to this file if the
cap is changed by the hardware. The *_cap
files only appear if the cap is known to be
enforced by hardware.
Unit: microWatt
RW
power[1-*]_cap_hyst Margin of hysteresis built around capping and
notification.
Unit: microWatt
RW
power[1-*]_cap_max Maximum cap that can be set.
Unit: microWatt
RO
power[1-*]_cap_min Minimum cap that can be set.
Unit: microWatt
RO
**********
* Energy *
**********
Documentation/i2c/busses/i2c-piix4
+1 -1
View File
@@ -8,7 +8,7 @@ Supported adapters:
Datasheet: Only available via NDA from ServerWorks
* ATI IXP200, IXP300, IXP400, SB600, SB700 and SB800 southbridges
Datasheet: Not publicly available
* AMD SB900
* AMD Hudson-2
Datasheet: Not publicly available
* Standard Microsystems (SMSC) SLC90E66 (Victory66) southbridge
Datasheet: Publicly available at the SMSC website http://www.smsc.com
Documentation/infiniband/user_mad.txt
+2 -2
View File
@@ -128,8 +128,8 @@ Setting IsSM Capability Bit
To create the appropriate character device files automatically with
udev, a rule like
KERNEL="umad*", NAME="infiniband/%k"
KERNEL="issm*", NAME="infiniband/%k"
KERNEL=="umad*", NAME="infiniband/%k"
KERNEL=="issm*", NAME="infiniband/%k"
can be used. This will create device nodes named
Documentation/infiniband/user_verbs.txt
+1 -1
View File
@@ -58,7 +58,7 @@ Memory pinning
To create the appropriate character device files automatically with
udev, a rule like
KERNEL="uverbs*", NAME="infiniband/%k"
KERNEL=="uverbs*", NAME="infiniband/%k"
can be used. This will create device nodes named
Documentation/kernel-parameters.txt
+1
View File
@@ -671,6 +671,7 @@ and is between 256 and 4096 characters. It is defined in the file
earlyprintk= [X86,SH,BLACKFIN]
earlyprintk=vga
earlyprintk=serial[,ttySn[,baudrate]]
earlyprintk=ttySn[,baudrate]
earlyprintk=dbgp[debugController#]
Append ",keep" to not disable it when the real console
Documentation/lguest/lguest.c
-1
View File
@@ -42,7 +42,6 @@
#include <signal.h>
#include "linux/lguest_launcher.h"
#include "linux/virtio_config.h"
#include <linux/virtio_ids.h>
#include "linux/virtio_net.h"
#include "linux/virtio_blk.h"
#include "linux/virtio_console.h"
Documentation/scsi/hptiop.txt
+20 -1
View File
@@ -3,6 +3,25 @@ HIGHPOINT ROCKETRAID 3xxx/4xxx ADAPTER DRIVER (hptiop)
Controller Register Map
-------------------------
For RR44xx Intel IOP based adapters, the controller IOP is accessed via PCI BAR0 and BAR2:
BAR0 offset Register
0x11C5C Link Interface IRQ Set
0x11C60 Link Interface IRQ Clear
BAR2 offset Register
0x10 Inbound Message Register 0
0x14 Inbound Message Register 1
0x18 Outbound Message Register 0
0x1C Outbound Message Register 1
0x20 Inbound Doorbell Register
0x24 Inbound Interrupt Status Register
0x28 Inbound Interrupt Mask Register
0x30 Outbound Interrupt Status Register
0x34 Outbound Interrupt Mask Register
0x40 Inbound Queue Port
0x44 Outbound Queue Port
For Intel IOP based adapters, the controller IOP is accessed via PCI BAR0:
BAR0 offset Register
@@ -93,7 +112,7 @@ The driver exposes following sysfs attributes:
-----------------------------------------------------------------------------
Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
Copyright (C) 2006-2009 HighPoint Technologies, Inc. All Rights Reserved.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
Documentation/sound/alsa/ALSA-Configuration.txt
+1 -1
View File
@@ -522,7 +522,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
pcm_devs - Number of PCM devices assigned to each card
(default = 1, up to 4)
pcm_substreams - Number of PCM substreams assigned to each PCM
(default = 8, up to 16)
(default = 8, up to 128)
hrtimer - Use hrtimer (=1, default) or system timer (=0)
fake_buffer - Fake buffer allocations (default = 1)
Documentation/sound/alsa/HD-Audio-Models.txt
+1
View File
@@ -359,6 +359,7 @@ STAC9227/9228/9229/927x
5stack-no-fp D965 5stack without front panel
dell-3stack Dell Dimension E520
dell-bios Fixes with Dell BIOS setup
volknob Fixes with volume-knob widget 0x24
auto BIOS setup (default)
STAC92HD71B*
Documentation/thermal/sysfs-api.txt
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@@ -1,5 +1,5 @@
Generic Thermal Sysfs driver How To
=========================
===================================
Written by Sujith Thomas <sujith.thomas@intel.com>, Zhang Rui <rui.zhang@intel.com>
@@ -10,20 +10,20 @@ Copyright (c) 2008 Intel Corporation
0. Introduction
The generic thermal sysfs provides a set of interfaces for thermal zone devices (sensors)
and thermal cooling devices (fan, processor...) to register with the thermal management
solution and to be a part of it.
The generic thermal sysfs provides a set of interfaces for thermal zone
devices (sensors) and thermal cooling devices (fan, processor...) to register
with the thermal management solution and to be a part of it.
This how-to focuses on enabling new thermal zone and cooling devices to participate
in thermal management.
This solution is platform independent and any type of thermal zone devices and
cooling devices should be able to make use of the infrastructure.
This how-to focuses on enabling new thermal zone and cooling devices to
participate in thermal management.
This solution is platform independent and any type of thermal zone devices
and cooling devices should be able to make use of the infrastructure.
The main task of the thermal sysfs driver is to expose thermal zone attributes as well
as cooling device attributes to the user space.
An intelligent thermal management application can make decisions based on inputs
from thermal zone attributes (the current temperature and trip point temperature)
and throttle appropriate devices.
The main task of the thermal sysfs driver is to expose thermal zone attributes
as well as cooling device attributes to the user space.
An intelligent thermal management application can make decisions based on
inputs from thermal zone attributes (the current temperature and trip point
temperature) and throttle appropriate devices.
[0-*] denotes any positive number starting from 0
[1-*] denotes any positive number starting from 1
@@ -31,12 +31,12 @@ and throttle appropriate devices.
1. thermal sysfs driver interface functions
1.1 thermal zone device interface
1.1.1 struct thermal_zone_device *thermal_zone_device_register(char *name, int trips,
void *devdata, struct thermal_zone_device_ops *ops)
1.1.1 struct thermal_zone_device *thermal_zone_device_register(char *name,
int trips, void *devdata, struct thermal_zone_device_ops *ops)
This interface function adds a new thermal zone device (sensor) to
/sys/class/thermal folder as thermal_zone[0-*].
It tries to bind all the thermal cooling devices registered at the same time.
/sys/class/thermal folder as thermal_zone[0-*]. It tries to bind all the
thermal cooling devices registered at the same time.
name: the thermal zone name.
trips: the total number of trip points this thermal zone supports.
@@ -46,8 +46,8 @@ and throttle appropriate devices.
.unbind: unbind the thermal zone device with a thermal cooling device.
.get_temp: get the current temperature of the thermal zone.
.get_mode: get the current mode (user/kernel) of the thermal zone.
"kernel" means thermal management is done in kernel.
"user" will prevent kernel thermal driver actions upon trip points
- "kernel" means thermal management is done in kernel.
- "user" will prevent kernel thermal driver actions upon trip points
so that user applications can take charge of thermal management.
.set_mode: set the mode (user/kernel) of the thermal zone.
.get_trip_type: get the type of certain trip point.
@@ -57,16 +57,16 @@ and throttle appropriate devices.
1.1.2 void thermal_zone_device_unregister(struct thermal_zone_device *tz)
This interface function removes the thermal zone device.
It deletes the corresponding entry form /sys/class/thermal folder and unbind all
the thermal cooling devices it uses.
It deletes the corresponding entry form /sys/class/thermal folder and
unbind all the thermal cooling devices it uses.
1.2 thermal cooling device interface
1.2.1 struct thermal_cooling_device *thermal_cooling_device_register(char *name,
void *devdata, struct thermal_cooling_device_ops *)
This interface function adds a new thermal cooling device (fan/processor/...) to
/sys/class/thermal/ folder as cooling_device[0-*].
It tries to bind itself to all the thermal zone devices register at the same time.
This interface function adds a new thermal cooling device (fan/processor/...)
to /sys/class/thermal/ folder as cooling_device[0-*]. It tries to bind itself
to all the thermal zone devices register at the same time.
name: the cooling device name.
devdata: device private data.
ops: thermal cooling devices call-backs.
@@ -77,15 +77,15 @@ and throttle appropriate devices.
1.2.2 void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
This interface function remove the thermal cooling device.
It deletes the corresponding entry form /sys/class/thermal folder and unbind
itself from all the thermal zone devices using it.
It deletes the corresponding entry form /sys/class/thermal folder and
unbind itself from all the thermal zone devices using it.
1.3 interface for binding a thermal zone device with a thermal cooling device
1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);
This interface function bind a thermal cooling device to the certain trip point
of a thermal zone device.
This interface function bind a thermal cooling device to the certain trip
point of a thermal zone device.
This function is usually called in the thermal zone device .bind callback.
tz: the thermal zone device
cdev: thermal cooling device
@@ -95,9 +95,9 @@ and throttle appropriate devices.
1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);
This interface function unbind a thermal cooling device from the certain trip point
of a thermal zone device.
This function is usually called in the thermal zone device .unbind callback.
This interface function unbind a thermal cooling device from the certain
trip point of a thermal zone device. This function is usually called in
the thermal zone device .unbind callback.
tz: the thermal zone device
cdev: thermal cooling device
trip: indicates which trip point the cooling devices is associated with
@@ -114,153 +114,166 @@ if hwmon is compiled in or built as a module.
Thermal zone device sys I/F, created once it's registered:
/sys/class/thermal/thermal_zone[0-*]:
|-----type: Type of the thermal zone
|-----temp: Current temperature
|-----mode: Working mode of the thermal zone
|-----trip_point_[0-*]_temp: Trip point temperature
|-----trip_point_[0-*]_type: Trip point type
|---type: Type of the thermal zone
|---temp: Current temperature
|---mode: Working mode of the thermal zone
|---trip_point_[0-*]_temp: Trip point temperature
|---trip_point_[0-*]_type: Trip point type
Thermal cooling device sys I/F, created once it's registered:
/sys/class/thermal/cooling_device[0-*]:
|-----type : Type of the cooling device(processor/fan/...)
|-----max_state: Maximum cooling state of the cooling device
|-----cur_state: Current cooling state of the cooling device
|---type: Type of the cooling device(processor/fan/...)
|---max_state: Maximum cooling state of the cooling device
|---cur_state: Current cooling state of the cooling device
These two dynamic attributes are created/removed in pairs.
They represent the relationship between a thermal zone and its associated cooling device.
They are created/removed for each
thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful execution.
Then next two dynamic attributes are created/removed in pairs. They represent
the relationship between a thermal zone and its associated cooling device.
They are created/removed for each successful execution of
thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device.
/sys/class/thermal/thermal_zone[0-*]
|-----cdev[0-*]: The [0-*]th cooling device in the current thermal zone
|-----cdev[0-*]_trip_point: Trip point that cdev[0-*] is associated with
/sys/class/thermal/thermal_zone[0-*]:
|---cdev[0-*]: [0-*]th cooling device in current thermal zone
|---cdev[0-*]_trip_point: Trip point that cdev[0-*] is associated with
Besides the thermal zone device sysfs I/F and cooling device sysfs I/F,
the generic thermal driver also creates a hwmon sysfs I/F for each _type_ of
thermal zone device. E.g. the generic thermal driver registers one hwmon class device
and build the associated hwmon sysfs I/F for all the registered ACPI thermal zones.
the generic thermal driver also creates a hwmon sysfs I/F for each _type_
of thermal zone device. E.g. the generic thermal driver registers one hwmon
class device and build the associated hwmon sysfs I/F for all the registered
ACPI thermal zones.
/sys/class/hwmon/hwmon[0-*]:
|-----name: The type of the thermal zone devices.
|-----temp[1-*]_input: The current temperature of thermal zone [1-*].
|-----temp[1-*]_critical: The critical trip point of thermal zone [1-*].
|---name: The type of the thermal zone devices
|---temp[1-*]_input: The current temperature of thermal zone [1-*]
|---temp[1-*]_critical: The critical trip point of thermal zone [1-*]
Please read Documentation/hwmon/sysfs-interface for additional information.
***************************
* Thermal zone attributes *
***************************
type Strings which represent the thermal zone type.
type
Strings which represent the thermal zone type.
This is given by thermal zone driver as part of registration.
Eg: "acpitz" indicates it's an ACPI thermal device.
In order to keep it consistent with hwmon sys attribute,
this should be a short, lowercase string,
not containing spaces nor dashes.
RO
Required
E.g: "acpitz" indicates it's an ACPI thermal device.
In order to keep it consistent with hwmon sys attribute; this should
be a short, lowercase string, not containing spaces nor dashes.
RO, Required
temp Current temperature as reported by thermal zone (sensor)
temp
Current temperature as reported by thermal zone (sensor).
Unit: millidegree Celsius
RO
Required
RO, Required
mode One of the predefined values in [kernel, user]
This file gives information about the algorithm
that is currently managing the thermal zone.
It can be either default kernel based algorithm
or user space application.
RW
Optional
mode
One of the predefined values in [kernel, user].
This file gives information about the algorithm that is currently
managing the thermal zone. It can be either default kernel based
algorithm or user space application.
kernel = Thermal management in kernel thermal zone driver.
user = Preventing kernel thermal zone driver actions upon
trip points so that user application can take full
charge of the thermal management.
RW, Optional
trip_point_[0-*]_temp The temperature above which trip point will be fired
trip_point_[0-*]_temp
The temperature above which trip point will be fired.
Unit: millidegree Celsius
RO
Optional
RO, Optional
trip_point_[0-*]_type Strings which indicate the type of the trip point
E.g. it can be one of critical, hot, passive,
active[0-*] for ACPI thermal zone.
RO
Optional
trip_point_[0-*]_type
Strings which indicate the type of the trip point.
E.g. it can be one of critical, hot, passive, active[0-*] for ACPI
thermal zone.
RO, Optional
cdev[0-*] Sysfs link to the thermal cooling device node where the sys I/F
cdev[0-*]
Sysfs link to the thermal cooling device node where the sys I/F
for cooling device throttling control represents.
RO
Optional
RO, Optional
cdev[0-*]_trip_point The trip point with which cdev[0-*] is associated in this thermal zone
-1 means the cooling device is not associated with any trip point.
RO
Optional
cdev[0-*]_trip_point
The trip point with which cdev[0-*] is associated in this thermal
zone; -1 means the cooling device is not associated with any trip
point.
RO, Optional
******************************
passive
Attribute is only present for zones in which the passive cooling
policy is not supported by native thermal driver. Default is zero
and can be set to a temperature (in millidegrees) to enable a
passive trip point for the zone. Activation is done by polling with
an interval of 1 second.
Unit: millidegrees Celsius
RW, Optional
*****************************
* Cooling device attributes *
******************************
*****************************
type String which represents the type of device
eg: For generic ACPI: this should be "Fan",
"Processor" or "LCD"
eg. For memory controller device on intel_menlow platform:
this should be "Memory controller"
RO
Required
type
String which represents the type of device, e.g:
- for generic ACPI: should be "Fan", "Processor" or "LCD"
- for memory controller device on intel_menlow platform:
should be "Memory controller".
RO, Required
max_state The maximum permissible cooling state of this cooling device.
RO
Required
max_state
The maximum permissible cooling state of this cooling device.
RO, Required
cur_state The current cooling state of this cooling device.
the value can any integer numbers between 0 and max_state,
cur_state == 0 means no cooling
cur_state == max_state means the maximum cooling.
RW
Required
cur_state
The current cooling state of this cooling device.
The value can any integer numbers between 0 and max_state:
- cur_state == 0 means no cooling
- cur_state == max_state means the maximum cooling.
RW, Required
3. A simple implementation
ACPI thermal zone may support multiple trip points like critical/hot/passive/active.
If an ACPI thermal zone supports critical, passive, active[0] and active[1] at the same time,
it may register itself as a thermal_zone_device (thermal_zone1) with 4 trip points in all.
It has one processor and one fan, which are both registered as thermal_cooling_device.
If the processor is listed in _PSL method, and the fan is listed in _AL0 method,
the sys I/F structure will be built like this:
ACPI thermal zone may support multiple trip points like critical, hot,
passive, active. If an ACPI thermal zone supports critical, passive,
active[0] and active[1] at the same time, it may register itself as a
thermal_zone_device (thermal_zone1) with 4 trip points in all.
It has one processor and one fan, which are both registered as
thermal_cooling_device.
If the processor is listed in _PSL method, and the fan is listed in _AL0
method, the sys I/F structure will be built like this:
/sys/class/thermal:
|thermal_zone1:
|-----type: acpitz
|-----temp: 37000
|-----mode: kernel
|-----trip_point_0_temp: 100000
|-----trip_point_0_type: critical
|-----trip_point_1_temp: 80000
|-----trip_point_1_type: passive
|-----trip_point_2_temp: 70000
|-----trip_point_2_type: active0
|-----trip_point_3_temp: 60000
|-----trip_point_3_type: active1
|-----cdev0: --->/sys/class/thermal/cooling_device0
|-----cdev0_trip_point: 1 /* cdev0 can be used for passive */
|-----cdev1: --->/sys/class/thermal/cooling_device3
|-----cdev1_trip_point: 2 /* cdev1 can be used for active[0]*/
|---type: acpitz
|---temp: 37000
|---mode: kernel
|---trip_point_0_temp: 100000
|---trip_point_0_type: critical
|---trip_point_1_temp: 80000
|---trip_point_1_type: passive
|---trip_point_2_temp: 70000
|---trip_point_2_type: active0
|---trip_point_3_temp: 60000
|---trip_point_3_type: active1
|---cdev0: --->/sys/class/thermal/cooling_device0
|---cdev0_trip_point: 1 /* cdev0 can be used for passive */
|---cdev1: --->/sys/class/thermal/cooling_device3
|---cdev1_trip_point: 2 /* cdev1 can be used for active[0]*/
|cooling_device0:
|-----type: Processor
|-----max_state: 8
|-----cur_state: 0
|---type: Processor
|---max_state: 8
|---cur_state: 0
|cooling_device3:
|-----type: Fan
|-----max_state: 2
|-----cur_state: 0
|---type: Fan
|---max_state: 2
|---cur_state: 0
/sys/class/hwmon:
|hwmon0:
|-----name: acpitz
|-----temp1_input: 37000
|-----temp1_crit: 100000
|---name: acpitz
|---temp1_input: 37000
|---temp1_crit: 100000

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