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Merge branch 'linus' into locking-for-linus

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Conflicts:
	lib/Kconfig.debug
This commit is contained in:
Ingo Molnar
2009-03-31 13:53:43 +02:00
parent d820ac4c2f 15f7176eb1
commit 7bee946358
5760 changed files with 449145 additions and 228339 deletions
Download Patch File Download Diff File Expand all files Collapse all files
CREDITS
+1 -1
View File
@@ -3738,7 +3738,7 @@ S: 93149 Nittenau
S: Germany
N: Gertjan van Wingerde
E: gwingerde@home.nl
E: gwingerde@gmail.com
D: Ralink rt2x00 WLAN driver
D: Minix V2 file-system
D: Misc fixes
Documentation/ABI/testing/ima_policy
+61
View File
@@ -0,0 +1,61 @@
What: security/ima/policy
Date: May 2008
Contact: Mimi Zohar <zohar@us.ibm.com>
Description:
The Trusted Computing Group(TCG) runtime Integrity
Measurement Architecture(IMA) maintains a list of hash
values of executables and other sensitive system files
loaded into the run-time of this system. At runtime,
the policy can be constrained based on LSM specific data.
Policies are loaded into the securityfs file ima/policy
by opening the file, writing the rules one at a time and
then closing the file. The new policy takes effect after
the file ima/policy is closed.
rule format: action [condition ...]
action: measure | dont_measure
condition:= base | lsm
base: [[func=] [mask=] [fsmagic=] [uid=]]
lsm: [[subj_user=] [subj_role=] [subj_type=]
[obj_user=] [obj_role=] [obj_type=]]
base: func:= [BPRM_CHECK][FILE_MMAP][INODE_PERMISSION]
mask:= [MAY_READ] [MAY_WRITE] [MAY_APPEND] [MAY_EXEC]
fsmagic:= hex value
uid:= decimal value
lsm: are LSM specific
default policy:
# PROC_SUPER_MAGIC
dont_measure fsmagic=0x9fa0
# SYSFS_MAGIC
dont_measure fsmagic=0x62656572
# DEBUGFS_MAGIC
dont_measure fsmagic=0x64626720
# TMPFS_MAGIC
dont_measure fsmagic=0x01021994
# SECURITYFS_MAGIC
dont_measure fsmagic=0x73636673
measure func=BPRM_CHECK
measure func=FILE_MMAP mask=MAY_EXEC
measure func=INODE_PERM mask=MAY_READ uid=0
The default policy measures all executables in bprm_check,
all files mmapped executable in file_mmap, and all files
open for read by root in inode_permission.
Examples of LSM specific definitions:
SELinux:
# SELINUX_MAGIC
dont_measure fsmagic=0xF97CFF8C
dont_measure obj_type=var_log_t
dont_measure obj_type=auditd_log_t
measure subj_user=system_u func=INODE_PERM mask=MAY_READ
measure subj_role=system_r func=INODE_PERM mask=MAY_READ
Smack:
measure subj_user=_ func=INODE_PERM mask=MAY_READ
Documentation/DMA-API.txt
+106
View File
@@ -609,3 +609,109 @@ size is the size (and should be a page-sized multiple).
The return value will be either a pointer to the processor virtual
address of the memory, or an error (via PTR_ERR()) if any part of the
region is occupied.
Part III - Debug drivers use of the DMA-API
-------------------------------------------
The DMA-API as described above as some constraints. DMA addresses must be
released with the corresponding function with the same size for example. With
the advent of hardware IOMMUs it becomes more and more important that drivers
do not violate those constraints. In the worst case such a violation can
result in data corruption up to destroyed filesystems.
To debug drivers and find bugs in the usage of the DMA-API checking code can
be compiled into the kernel which will tell the developer about those
violations. If your architecture supports it you can select the "Enable
debugging of DMA-API usage" option in your kernel configuration. Enabling this
option has a performance impact. Do not enable it in production kernels.
If you boot the resulting kernel will contain code which does some bookkeeping
about what DMA memory was allocated for which device. If this code detects an
error it prints a warning message with some details into your kernel log. An
example warning message may look like this:
------------[ cut here ]------------
WARNING: at /data2/repos/linux-2.6-iommu/lib/dma-debug.c:448
check_unmap+0x203/0x490()
Hardware name:
forcedeth 0000:00:08.0: DMA-API: device driver frees DMA memory with wrong
function [device address=0x00000000640444be] [size=66 bytes] [mapped as
single] [unmapped as page]
Modules linked in: nfsd exportfs bridge stp llc r8169
Pid: 0, comm: swapper Tainted: G W 2.6.28-dmatest-09289-g8bb99c0 #1
Call Trace:
<IRQ> [<ffffffff80240b22>] warn_slowpath+0xf2/0x130
[<ffffffff80647b70>] _spin_unlock+0x10/0x30
[<ffffffff80537e75>] usb_hcd_link_urb_to_ep+0x75/0xc0
[<ffffffff80647c22>] _spin_unlock_irqrestore+0x12/0x40
[<ffffffff8055347f>] ohci_urb_enqueue+0x19f/0x7c0
[<ffffffff80252f96>] queue_work+0x56/0x60
[<ffffffff80237e10>] enqueue_task_fair+0x20/0x50
[<ffffffff80539279>] usb_hcd_submit_urb+0x379/0xbc0
[<ffffffff803b78c3>] cpumask_next_and+0x23/0x40
[<ffffffff80235177>] find_busiest_group+0x207/0x8a0
[<ffffffff8064784f>] _spin_lock_irqsave+0x1f/0x50
[<ffffffff803c7ea3>] check_unmap+0x203/0x490
[<ffffffff803c8259>] debug_dma_unmap_page+0x49/0x50
[<ffffffff80485f26>] nv_tx_done_optimized+0xc6/0x2c0
[<ffffffff80486c13>] nv_nic_irq_optimized+0x73/0x2b0
[<ffffffff8026df84>] handle_IRQ_event+0x34/0x70
[<ffffffff8026ffe9>] handle_edge_irq+0xc9/0x150
[<ffffffff8020e3ab>] do_IRQ+0xcb/0x1c0
[<ffffffff8020c093>] ret_from_intr+0x0/0xa
<EOI> <4>---[ end trace f6435a98e2a38c0e ]---
The driver developer can find the driver and the device including a stacktrace
of the DMA-API call which caused this warning.
Per default only the first error will result in a warning message. All other
errors will only silently counted. This limitation exist to prevent the code
from flooding your kernel log. To support debugging a device driver this can
be disabled via debugfs. See the debugfs interface documentation below for
details.
The debugfs directory for the DMA-API debugging code is called dma-api/. In
this directory the following files can currently be found:
dma-api/all_errors This file contains a numeric value. If this
value is not equal to zero the debugging code
will print a warning for every error it finds
into the kernel log. Be carefull with this
option. It can easily flood your logs.
dma-api/disabled This read-only file contains the character 'Y'
if the debugging code is disabled. This can
happen when it runs out of memory or if it was
disabled at boot time
dma-api/error_count This file is read-only and shows the total
numbers of errors found.
dma-api/num_errors The number in this file shows how many
warnings will be printed to the kernel log
before it stops. This number is initialized to
one at system boot and be set by writing into
this file
dma-api/min_free_entries
This read-only file can be read to get the
minimum number of free dma_debug_entries the
allocator has ever seen. If this value goes
down to zero the code will disable itself
because it is not longer reliable.
dma-api/num_free_entries
The current number of free dma_debug_entries
in the allocator.
If you have this code compiled into your kernel it will be enabled by default.
If you want to boot without the bookkeeping anyway you can provide
'dma_debug=off' as a boot parameter. This will disable DMA-API debugging.
Notice that you can not enable it again at runtime. You have to reboot to do
so.
When the code disables itself at runtime this is most likely because it ran
out of dma_debug_entries. These entries are preallocated at boot. The number
of preallocated entries is defined per architecture. If it is too low for you
boot with 'dma_debug_entries=<your_desired_number>' to overwrite the
architectural default.
Documentation/DocBook/Makefile
+2 -1
View File
@@ -12,7 +12,8 @@ DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \
kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \
gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
mac80211.xml debugobjects.xml sh.xml regulator.xml
mac80211.xml debugobjects.xml sh.xml regulator.xml \
alsa-driver-api.xml writing-an-alsa-driver.xml
###
# The build process is as follows (targets):
Documentation/sound/alsa/DocBook/alsa-driver-api.tmpl → Documentation/DocBook/alsa-driver-api.tmpl
+13 -4
View File
@@ -1,11 +1,11 @@
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.1//EN">
<book>
<?dbhtml filename="index.html">
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
<!-- ****************************************************** -->
<!-- Header -->
<!-- ****************************************************** -->
<book id="ALSA-Driver-API">
<bookinfo>
<title>The ALSA Driver API</title>
@@ -35,6 +35,8 @@
</bookinfo>
<toc></toc>
<chapter><title>Management of Cards and Devices</title>
<sect1><title>Card Management</title>
!Esound/core/init.c
@@ -71,6 +73,10 @@
!Esound/pci/ac97/ac97_codec.c
!Esound/pci/ac97/ac97_pcm.c
</sect1>
<sect1><title>Virtual Master Control API</title>
!Esound/core/vmaster.c
!Iinclude/sound/control.h
</sect1>
</chapter>
<chapter><title>MIDI API</title>
<sect1><title>Raw MIDI API</title>
@@ -88,6 +94,9 @@
<chapter><title>Miscellaneous Functions</title>
<sect1><title>Hardware-Dependent Devices API</title>
!Esound/core/hwdep.c
</sect1>
<sect1><title>Jack Abstraction Layer API</title>
!Esound/core/jack.c
</sect1>
<sect1><title>ISA DMA Helpers</title>
!Esound/core/isadma.c
Documentation/DocBook/genericirq.tmpl
+1
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@@ -440,6 +440,7 @@ desc->chip->end();
used in the generic IRQ layer.
</para>
!Iinclude/linux/irq.h
!Iinclude/linux/interrupt.h
</chapter>
<chapter id="pubfunctions">
Documentation/DocBook/mac80211.tmpl
+14 -4
View File
@@ -17,8 +17,7 @@
</authorgroup>
<copyright>
<year>2007</year>
<year>2008</year>
<year>2007-2009</year>
<holder>Johannes Berg</holder>
</copyright>
@@ -165,8 +164,8 @@ usage should require reading the full document.
!Pinclude/net/mac80211.h Frame format
</sect1>
<sect1>
<title>Alignment issues</title>
<para>TBD</para>
<title>Packet alignment</title>
!Pnet/mac80211/rx.c Packet alignment
</sect1>
<sect1>
<title>Calling into mac80211 from interrupts</title>
@@ -223,6 +222,17 @@ usage should require reading the full document.
!Finclude/net/mac80211.h ieee80211_key_flags
</chapter>
<chapter id="powersave">
<title>Powersave support</title>
!Pinclude/net/mac80211.h Powersave support
</chapter>
<chapter id="beacon-filter">
<title>Beacon filter support</title>
!Pinclude/net/mac80211.h Beacon filter support
!Finclude/net/mac80211.h ieee80211_beacon_loss
</chapter>
<chapter id="qos">
<title>Multiple queues and QoS support</title>
<para>TBD</para>
Documentation/DocBook/procfs_example.c
-9
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@@ -117,9 +117,6 @@ static int __init init_procfs_example(void)
rv = -ENOMEM;
goto out;
}
example_dir->owner = THIS_MODULE;
/* create jiffies using convenience function */
jiffies_file = create_proc_read_entry("jiffies",
0444, example_dir,
@@ -130,8 +127,6 @@ static int __init init_procfs_example(void)
goto no_jiffies;
}
jiffies_file->owner = THIS_MODULE;
/* create foo and bar files using same callback
* functions
*/
@@ -146,7 +141,6 @@ static int __init init_procfs_example(void)
foo_file->data = &foo_data;
foo_file->read_proc = proc_read_foobar;
foo_file->write_proc = proc_write_foobar;
foo_file->owner = THIS_MODULE;
bar_file = create_proc_entry("bar", 0644, example_dir);
if(bar_file == NULL) {
@@ -159,7 +153,6 @@ static int __init init_procfs_example(void)
bar_file->data = &bar_data;
bar_file->read_proc = proc_read_foobar;
bar_file->write_proc = proc_write_foobar;
bar_file->owner = THIS_MODULE;
/* create symlink */
symlink = proc_symlink("jiffies_too", example_dir,
@@ -169,8 +162,6 @@ static int __init init_procfs_example(void)
goto no_symlink;
}
symlink->owner = THIS_MODULE;
/* everything OK */
printk(KERN_INFO "%s %s initialised\n",
MODULE_NAME, MODULE_VERS);
Documentation/DocBook/uio-howto.tmpl
+25 -4
View File
@@ -41,6 +41,13 @@ GPL version 2.
</abstract>
<revhistory>
<revision>
<revnumber>0.8</revnumber>
<date>2008-12-24</date>
<authorinitials>hjk</authorinitials>
<revremark>Added name attributes in mem and portio sysfs directories.
</revremark>
</revision>
<revision>
<revnumber>0.7</revnumber>
<date>2008-12-23</date>
@@ -303,10 +310,17 @@ interested in translating it, please email me
appear if the size of the mapping is not 0.
</para>
<para>
Each <filename>mapX/</filename> directory contains two read-only files
that show start address and size of the memory:
Each <filename>mapX/</filename> directory contains four read-only files
that show attributes of the memory:
</para>
<itemizedlist>
<listitem>
<para>
<filename>name</filename>: A string identifier for this mapping. This
is optional, the string can be empty. Drivers can set this to make it
easier for userspace to find the correct mapping.
</para>
</listitem>
<listitem>
<para>
<filename>addr</filename>: The address of memory that can be mapped.
@@ -366,10 +380,17 @@ offset = N * getpagesize();
<filename>/sys/class/uio/uioX/portio/</filename>.
</para>
<para>
Each <filename>portX/</filename> directory contains three read-only
files that show start, size, and type of the port region:
Each <filename>portX/</filename> directory contains four read-only
files that show name, start, size, and type of the port region:
</para>
<itemizedlist>
<listitem>
<para>
<filename>name</filename>: A string identifier for this port region.
The string is optional and can be empty. Drivers can set it to make it
easier for userspace to find a certain port region.
</para>
</listitem>
<listitem>
<para>
<filename>start</filename>: The first port of this region.
Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl → Documentation/DocBook/writing-an-alsa-driver.tmpl
+29 -23
View File
@@ -1,11 +1,11 @@
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.1//EN">
<book>
<?dbhtml filename="index.html">
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
<!-- ****************************************************** -->
<!-- Header -->
<!-- ****************************************************** -->
<book id="Writing-an-ALSA-Driver">
<bookinfo>
<title>Writing an ALSA Driver</title>
<author>
@@ -492,9 +492,9 @@
}
/* (2) */
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
if (err < 0)
return err;
/* (3) */
err = snd_mychip_create(card, pci, &chip);
@@ -590,8 +590,9 @@
<programlisting>
<![CDATA[
struct snd_card *card;
int err;
....
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
]]>
</programlisting>
</informalexample>
@@ -809,26 +810,28 @@
<para>
As mentioned above, to create a card instance, call
<function>snd_card_new()</function>.
<function>snd_card_create()</function>.
<informalexample>
<programlisting>
<![CDATA[
struct snd_card *card;
card = snd_card_new(index, id, module, extra_size);
int err;
err = snd_card_create(index, id, module, extra_size, &card);
]]>
</programlisting>
</informalexample>
</para>
<para>
The function takes four arguments, the card-index number, the
The function takes five arguments, the card-index number, the
id string, the module pointer (usually
<constant>THIS_MODULE</constant>),
and the size of extra-data space. The last argument is used to
the size of extra-data space, and the pointer to return the
card instance. The extra_size argument is used to
allocate card-&gt;private_data for the
chip-specific data. Note that these data
are allocated by <function>snd_card_new()</function>.
are allocated by <function>snd_card_create()</function>.
</para>
</section>
@@ -915,15 +918,16 @@
</para>
<section id="card-management-chip-specific-snd-card-new">
<title>1. Allocating via <function>snd_card_new()</function>.</title>
<title>1. Allocating via <function>snd_card_create()</function>.</title>
<para>
As mentioned above, you can pass the extra-data-length
to the 4th argument of <function>snd_card_new()</function>, i.e.
to the 4th argument of <function>snd_card_create()</function>, i.e.
<informalexample>
<programlisting>
<![CDATA[
card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(struct mychip));
err = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct mychip), &card);
]]>
</programlisting>
</informalexample>
@@ -952,8 +956,8 @@
<para>
After allocating a card instance via
<function>snd_card_new()</function> (with
<constant>NULL</constant> on the 4th arg), call
<function>snd_card_create()</function> (with
<constant>0</constant> on the 4th arg), call
<function>kzalloc()</function>.
<informalexample>
@@ -961,7 +965,7 @@
<![CDATA[
struct snd_card *card;
struct mychip *chip;
card = snd_card_new(index[dev], id[dev], THIS_MODULE, NULL);
err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
.....
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
]]>
@@ -5750,8 +5754,9 @@ struct _snd_pcm_runtime {
....
struct snd_card *card;
struct mychip *chip;
int err;
....
card = snd_card_new(index[dev], id[dev], THIS_MODULE, NULL);
err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
....
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
....
@@ -5763,7 +5768,7 @@ struct _snd_pcm_runtime {
</informalexample>
When you created the chip data with
<function>snd_card_new()</function>, it's anyway accessible
<function>snd_card_create()</function>, it's anyway accessible
via <structfield>private_data</structfield> field.
<informalexample>
@@ -5775,9 +5780,10 @@ struct _snd_pcm_runtime {
....
struct snd_card *card;
struct mychip *chip;
int err;
....
card = snd_card_new(index[dev], id[dev], THIS_MODULE,
sizeof(struct mychip));
err = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct mychip), &card);
....
chip = card->private_data;
....
Documentation/Smack.txt
+37 -5
View File
@@ -184,14 +184,16 @@ length. Single character labels using special characters, that being anything
other than a letter or digit, are reserved for use by the Smack development
team. Smack labels are unstructured, case sensitive, and the only operation
ever performed on them is comparison for equality. Smack labels cannot
contain unprintable characters or the "/" (slash) character.
contain unprintable characters or the "/" (slash) character. Smack labels
cannot begin with a '-', which is reserved for special options.
There are some predefined labels:
_ Pronounced "floor", a single underscore character.
^ Pronounced "hat", a single circumflex character.
* Pronounced "star", a single asterisk character.
? Pronounced "huh", a single question mark character.
_ Pronounced "floor", a single underscore character.
^ Pronounced "hat", a single circumflex character.
* Pronounced "star", a single asterisk character.
? Pronounced "huh", a single question mark character.
@ Pronounced "Internet", a single at sign character.
Every task on a Smack system is assigned a label. System tasks, such as
init(8) and systems daemons, are run with the floor ("_") label. User tasks
@@ -412,6 +414,36 @@ sockets.
A privileged program may set this to match the label of another
task with which it hopes to communicate.
Smack Netlabel Exceptions
You will often find that your labeled application has to talk to the outside,
unlabeled world. To do this there's a special file /smack/netlabel where you can
add some exceptions in the form of :
@IP1 LABEL1 or
@IP2/MASK LABEL2
It means that your application will have unlabeled access to @IP1 if it has
write access on LABEL1, and access to the subnet @IP2/MASK if it has write
access on LABEL2.
Entries in the /smack/netlabel file are matched by longest mask first, like in
classless IPv4 routing.
A special label '@' and an option '-CIPSO' can be used there :
@ means Internet, any application with any label has access to it
-CIPSO means standard CIPSO networking
If you don't know what CIPSO is and don't plan to use it, you can just do :
echo 127.0.0.1 -CIPSO > /smack/netlabel
echo 0.0.0.0/0 @ > /smack/netlabel
If you use CIPSO on your 192.168.0.0/16 local network and need also unlabeled
Internet access, you can have :
echo 127.0.0.1 -CIPSO > /smack/netlabel
echo 192.168.0.0/16 -CIPSO > /smack/netlabel
echo 0.0.0.0/0 @ > /smack/netlabel
Writing Applications for Smack
There are three sorts of applications that will run on a Smack system. How an
Documentation/arm/Samsung-S3C24XX/Suspend.txt
+4 -4
View File
@@ -40,13 +40,13 @@ Resuming
Machine Support
---------------
The machine specific functions must call the s3c2410_pm_init() function
The machine specific functions must call the s3c_pm_init() function
to say that its bootloader is capable of resuming. This can be as
simple as adding the following to the machine's definition:
INITMACHINE(s3c2410_pm_init)
INITMACHINE(s3c_pm_init)
A board can do its own setup before calling s3c2410_pm_init, if it
A board can do its own setup before calling s3c_pm_init, if it
needs to setup anything else for power management support.
There is currently no support for over-riding the default method of
@@ -74,7 +74,7 @@ statuc void __init machine_init(void)
enable_irq_wake(IRQ_EINT0);
s3c2410_pm_init();
s3c_pm_init();
}
Documentation/arm/memory.txt
+8 -1
View File
@@ -29,7 +29,14 @@ ffff0000 ffff0fff CPU vector page.
CPU supports vector relocation (control
register V bit.)
ffc00000 fffeffff DMA memory mapping region. Memory returned
fffe0000 fffeffff XScale cache flush area. This is used
in proc-xscale.S to flush the whole data
cache. Free for other usage on non-XScale.
fff00000 fffdffff Fixmap mapping region. Addresses provided
by fix_to_virt() will be located here.
ffc00000 ffefffff DMA memory mapping region. Memory returned
by the dma_alloc_xxx functions will be
dynamically mapped here.
Documentation/block/switching-sched.txt
-6
View File
@@ -35,9 +35,3 @@ noop anticipatory deadline [cfq]
# echo anticipatory > /sys/block/hda/queue/scheduler
# cat /sys/block/hda/queue/scheduler
noop [anticipatory] deadline cfq
Each io queue has a set of io scheduler tunables associated with it. These
tunables control how the io scheduler works. You can find these entries
in:
/sys/block/<device>/queue/iosched
Documentation/cpu-freq/governors.txt
+21 -3
View File
@@ -117,10 +117,28 @@ accessible parameters:
sampling_rate: measured in uS (10^-6 seconds), this is how often you
want the kernel to look at the CPU usage and to make decisions on
what to do about the frequency. Typically this is set to values of
around '10000' or more.
around '10000' or more. It's default value is (cmp. with users-guide.txt):
transition_latency * 1000
The lowest value you can set is:
transition_latency * 100 or it may get restricted to a value where it
makes not sense for the kernel anymore to poll that often which depends
on your HZ config variable (HZ=1000: max=20000us, HZ=250: max=5000).
Be aware that transition latency is in ns and sampling_rate is in us, so you
get the same sysfs value by default.
Sampling rate should always get adjusted considering the transition latency
To set the sampling rate 750 times as high as the transition latency
in the bash (as said, 1000 is default), do:
echo `$(($(cat cpuinfo_transition_latency) * 750 / 1000)) \
>ondemand/sampling_rate
show_sampling_rate_(min|max): the minimum and maximum sampling rates
available that you may set 'sampling_rate' to.
show_sampling_rate_(min|max): THIS INTERFACE IS DEPRECATED, DON'T USE IT.
You can use wider ranges now and the general
cpuinfo_transition_latency variable (cmp. with user-guide.txt) can be
used to obtain exactly the same info:
show_sampling_rate_min = transtition_latency * 500 / 1000
show_sampling_rate_max = transtition_latency * 500000 / 1000
(divided by 1000 is to illustrate that sampling rate is in us and
transition latency is exported ns).
up_threshold: defines what the average CPU usage between the samplings
of 'sampling_rate' needs to be for the kernel to make a decision on
Documentation/cpu-freq/user-guide.txt
+12
View File
@@ -152,6 +152,18 @@ cpuinfo_min_freq : this file shows the minimum operating
frequency the processor can run at(in kHz)
cpuinfo_max_freq : this file shows the maximum operating
frequency the processor can run at(in kHz)
cpuinfo_transition_latency The time it takes on this CPU to
switch between two frequencies in nano
seconds. If unknown or known to be
that high that the driver does not
work with the ondemand governor, -1
(CPUFREQ_ETERNAL) will be returned.
Using this information can be useful
to choose an appropriate polling
frequency for a kernel governor or
userspace daemon. Make sure to not
switch the frequency too often
resulting in performance loss.
scaling_driver : this file shows what cpufreq driver is
used to set the frequency on this CPU
Documentation/cputopology.txt
+3 -3
View File
@@ -18,11 +18,11 @@ For an architecture to support this feature, it must define some of
these macros in include/asm-XXX/topology.h:
#define topology_physical_package_id(cpu)
#define topology_core_id(cpu)
#define topology_thread_siblings(cpu)
#define topology_core_siblings(cpu)
#define topology_thread_cpumask(cpu)
#define topology_core_cpumask(cpu)
The type of **_id is int.
The type of siblings is cpumask_t.
The type of siblings is (const) struct cpumask *.
To be consistent on all architectures, include/linux/topology.h
provides default definitions for any of the above macros that are
Documentation/devices.txt
+6
View File
@@ -3145,6 +3145,12 @@ Your cooperation is appreciated.
1 = /dev/blockrom1 Second ROM card's translation layer interface
...
260 char OSD (Object-based-device) SCSI Device
0 = /dev/osd0 First OSD Device
1 = /dev/osd1 Second OSD Device
...
255 = /dev/osd255 256th OSD Device
**** ADDITIONAL /dev DIRECTORY ENTRIES
This section details additional entries that should or may exist in
Documentation/dontdiff
-1
View File
@@ -62,7 +62,6 @@ aic7*reg_print.c*
aic7*seq.h*
aicasm
aicdb.h*
asm
asm-offsets.h
asm_offsets.h
autoconf.h*
Documentation/dvb/get_dvb_firmware
+82 -3
View File
@@ -25,7 +25,7 @@ use IO::Handle;
"tda10046lifeview", "av7110", "dec2000t", "dec2540t",
"dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",
"or51211", "or51132_qam", "or51132_vsb", "bluebird",
"opera1");
"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2" );
# Check args
syntax() if (scalar(@ARGV) != 1);
@@ -37,8 +37,8 @@ for ($i=0; $i < scalar(@components); $i++) {
$outfile = eval($cid);
die $@ if $@;
print STDERR <<EOF;
Firmware $outfile extracted successfully.
Now copy it to either /usr/lib/hotplug/firmware or /lib/firmware
Firmware(s) $outfile extracted successfully.
Now copy it(they) to either /usr/lib/hotplug/firmware or /lib/firmware
(depending on configuration of firmware hotplug).
EOF
exit(0);
@@ -345,6 +345,85 @@ sub or51211 {
$fwfile;
}
sub cx231xx {
my $fwfile = "v4l-cx231xx-avcore-01.fw";
my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
my $hash = "7d3bb956dc9df0eafded2b56ba57cc42";
checkstandard();
wgetfile($fwfile, $url);
verify($fwfile, $hash);
$fwfile;
}
sub cx18 {
my $url = "http://linuxtv.org/downloads/firmware/";
my %files = (
'v4l-cx23418-apu.fw' => '588f081b562f5c653a3db1ad8f65939a',
'v4l-cx23418-cpu.fw' => 'b6c7ed64bc44b1a6e0840adaeac39d79',
'v4l-cx23418-dig.fw' => '95bc688d3e7599fd5800161e9971cc55',
);
checkstandard();
my $allfiles;
foreach my $fwfile (keys %files) {
wgetfile($fwfile, "$url/$fwfile");
verify($fwfile, $files{$fwfile});
$allfiles .= " $fwfile";
}
$allfiles =~ s/^\s//;
$allfiles;
}
sub cx23885 {
my $url = "http://linuxtv.org/downloads/firmware/";
my %files = (
'v4l-cx23885-avcore-01.fw' => 'a9f8f5d901a7fb42f552e1ee6384f3bb',
'v4l-cx23885-enc.fw' => 'a9f8f5d901a7fb42f552e1ee6384f3bb',
);
checkstandard();
my $allfiles;
foreach my $fwfile (keys %files) {
wgetfile($fwfile, "$url/$fwfile");
verify($fwfile, $files{$fwfile});
$allfiles .= " $fwfile";
}
$allfiles =~ s/^\s//;
$allfiles;
}
sub pvrusb2 {
my $url = "http://linuxtv.org/downloads/firmware/";
my %files = (
'v4l-cx25840.fw' => 'dadb79e9904fc8af96e8111d9cb59320',
);
checkstandard();
my $allfiles;
foreach my $fwfile (keys %files) {
wgetfile($fwfile, "$url/$fwfile");
verify($fwfile, $files{$fwfile});
$allfiles .= " $fwfile";
}
$allfiles =~ s/^\s//;
$allfiles;
}
sub or51132_qam {
my $fwfile = "dvb-fe-or51132-qam.fw";
my $url = "http://linuxtv.org/downloads/firmware/$fwfile";

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