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---
r: 97497
b: refs/heads/master
c: 1beee8d
h: refs/heads/master
i:
  97495: 1149ec9
v: v3
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Linus Torvalds committed May 30, 2008
1 parent cd08abf commit 83a790a
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 3446b9d57edd0b96a89715fef222879e4919a115
refs/heads/master: 1beee8dc8cf58e3f605bd7b34d7a39939be7d8d2
2 changes: 1 addition & 1 deletion trunk/.gitignore
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Expand Up @@ -52,8 +52,8 @@ series

# cscope files
cscope.*
ncscope.*

*.orig
*.rej
*~
\#*#
4 changes: 4 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-class-bdi
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Expand Up @@ -14,6 +14,10 @@ MAJOR:MINOR
non-block filesystems which provide their own BDI, such as NFS
and FUSE.

MAJOR:MINOR-fuseblk

Value of st_dev on fuseblk filesystems.

default

The default backing dev, used for non-block device backed
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25 changes: 25 additions & 0 deletions trunk/Documentation/DocBook/kernel-locking.tmpl
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Expand Up @@ -703,6 +703,31 @@
</sect1>
</chapter>

<chapter id="trylock-functions">
<title>The trylock Functions</title>
<para>
There are functions that try to acquire a lock only once and immediately
return a value telling about success or failure to acquire the lock.
They can be used if you need no access to the data protected with the lock
when some other thread is holding the lock. You should acquire the lock
later if you then need access to the data protected with the lock.
</para>

<para>
<function>spin_trylock()</function> does not spin but returns non-zero if
it acquires the spinlock on the first try or 0 if not. This function can
be used in all contexts like <function>spin_lock</function>: you must have
disabled the contexts that might interrupt you and acquire the spin lock.
</para>

<para>
<function>mutex_trylock()</function> does not suspend your task
but returns non-zero if it could lock the mutex on the first try
or 0 if not. This function cannot be safely used in hardware or software
interrupt contexts despite not sleeping.
</para>
</chapter>

<chapter id="Examples">
<title>Common Examples</title>
<para>
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8 changes: 0 additions & 8 deletions trunk/Documentation/cpu-freq/governors.txt
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Expand Up @@ -129,14 +129,6 @@ to its default value of '80' it means that between the checking
intervals the CPU needs to be on average more than 80% in use to then
decide that the CPU frequency needs to be increased.

sampling_down_factor: this parameter controls the rate that the CPU
makes a decision on when to decrease the frequency. When set to its
default value of '5' it means that at 1/5 the sampling_rate the kernel
makes a decision to lower the frequency. Five "lower rate" decisions
have to be made in a row before the CPU frequency is actually lower.
If set to '1' then the frequency decreases as quickly as it increases,
if set to '2' it decreases at half the rate of the increase.

ignore_nice_load: this parameter takes a value of '0' or '1'. When
set to '0' (its default), all processes are counted towards the
'cpu utilisation' value. When set to '1', the processes that are
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37 changes: 37 additions & 0 deletions trunk/Documentation/hwmon/ibmaem
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Kernel driver ibmaem
======================

Supported systems:
* Any recent IBM System X server with Active Energy Manager support.
This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2,
x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface
driver ("ipmi-si") needs to be loaded for this driver to do anything.
Prefix: 'ibmaem'
Datasheet: Not available

Author: Darrick J. Wong

Description
-----------

This driver implements sensor reading support for the energy and power
meters available on various IBM System X hardware through the BMC. All
sensor banks will be exported as platform devices; this driver can talk
to both v1 and v2 interfaces. This driver is completely separate from the
older ibmpex driver.

The v1 AEM interface has a simple set of features to monitor energy use.
There is a register that displays an estimate of raw energy consumption
since the last BMC reset, and a power sensor that returns average power
use over a configurable interval.

The v2 AEM interface is a bit more sophisticated, being able to present
a wider range of energy and power use registers, the power cap as
set by the AEM software, and temperature sensors.

Special Features
----------------

The "power_cap" value displays the current system power cap, as set by
the Active Energy Manager software. Setting the power cap from the host
is not currently supported.
9 changes: 6 additions & 3 deletions trunk/Documentation/kernel-parameters.txt
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Expand Up @@ -398,9 +398,6 @@ and is between 256 and 4096 characters. It is defined in the file
cio_ignore= [S390]
See Documentation/s390/CommonIO for details.

cio_msg= [S390]
See Documentation/s390/CommonIO for details.

clock= [BUGS=X86-32, HW] gettimeofday clocksource override.
[Deprecated]
Forces specified clocksource (if available) to be used
Expand Down Expand Up @@ -689,6 +686,12 @@ and is between 256 and 4096 characters. It is defined in the file
floppy= [HW]
See Documentation/floppy.txt.

force_pal_cache_flush
[IA-64] Avoid check_sal_cache_flush which may hang on
buggy SAL_CACHE_FLUSH implementations. Using this
parameter will force ia64_sal_cache_flush to call
ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.

gamecon.map[2|3]=
[HW,JOY] Multisystem joystick and NES/SNES/PSX pad
support via parallel port (up to 5 devices per port)
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3 changes: 1 addition & 2 deletions trunk/Kbuild
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Expand Up @@ -96,5 +96,4 @@ missing-syscalls: scripts/checksyscalls.sh FORCE
$(call cmd,syscalls)

# Delete all targets during make clean
clean-files := $(addprefix $(objtree)/,$(targets))

clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))
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