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yaml
---
r: 158321
b: refs/heads/master
c: 5304d5f
h: refs/heads/master
i:
  158319: c7461e1
v: v3
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Ingo Molnar committed Jul 18, 2009
1 parent 9eaebc1 commit f632d48
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 54d35f29f49224d86b994acb6e5969b9ba09022d
refs/heads/master: 5304d5fc74a269cc6c3e70f9713684ca729abdf0
1 change: 1 addition & 0 deletions trunk/.gitignore
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Expand Up @@ -27,6 +27,7 @@
*.gz
*.lzma
*.patch
*.gcno

#
# Top-level generic files
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2 changes: 0 additions & 2 deletions trunk/Documentation/DocBook/mac80211.tmpl
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Expand Up @@ -184,8 +184,6 @@ usage should require reading the full document.
!Finclude/net/mac80211.h ieee80211_ctstoself_get
!Finclude/net/mac80211.h ieee80211_ctstoself_duration
!Finclude/net/mac80211.h ieee80211_generic_frame_duration
!Finclude/net/mac80211.h ieee80211_get_hdrlen_from_skb
!Finclude/net/mac80211.h ieee80211_hdrlen
!Finclude/net/mac80211.h ieee80211_wake_queue
!Finclude/net/mac80211.h ieee80211_stop_queue
!Finclude/net/mac80211.h ieee80211_wake_queues
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4 changes: 2 additions & 2 deletions trunk/Documentation/block/data-integrity.txt
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Expand Up @@ -50,7 +50,7 @@ encouraged them to allow separation of the data and integrity metadata
scatter-gather lists.

The controller will interleave the buffers on write and split them on
read. This means that the Linux can DMA the data buffers to and from
read. This means that Linux can DMA the data buffers to and from
host memory without changes to the page cache.

Also, the 16-bit CRC checksum mandated by both the SCSI and SATA specs
Expand All @@ -66,7 +66,7 @@ software RAID5).

The IP checksum is weaker than the CRC in terms of detecting bit
errors. However, the strength is really in the separation of the data
buffers and the integrity metadata. These two distinct buffers much
buffers and the integrity metadata. These two distinct buffers must
match up for an I/O to complete.

The separation of the data and integrity metadata buffers as well as
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12 changes: 12 additions & 0 deletions trunk/Documentation/cgroups/cpusets.txt
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Expand Up @@ -777,6 +777,18 @@ in cpuset directories:
# /bin/echo 1-4 > cpus -> set cpus list to cpus 1,2,3,4
# /bin/echo 1,2,3,4 > cpus -> set cpus list to cpus 1,2,3,4

To add a CPU to a cpuset, write the new list of CPUs including the
CPU to be added. To add 6 to the above cpuset:

# /bin/echo 1-4,6 > cpus -> set cpus list to cpus 1,2,3,4,6

Similarly to remove a CPU from a cpuset, write the new list of CPUs
without the CPU to be removed.

To remove all the CPUs:

# /bin/echo "" > cpus -> clear cpus list

2.3 Setting flags
-----------------

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4 changes: 2 additions & 2 deletions trunk/Documentation/driver-model/driver.txt
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Expand Up @@ -207,8 +207,8 @@ Attributes
~~~~~~~~~~
struct driver_attribute {
struct attribute attr;
ssize_t (*show)(struct device_driver *, char * buf, size_t count, loff_t off);
ssize_t (*store)(struct device_driver *, const char * buf, size_t count, loff_t off);
ssize_t (*show)(struct device_driver *driver, char *buf);
ssize_t (*store)(struct device_driver *, const char * buf, size_t count);
};

Device drivers can export attributes via their sysfs directories.
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53 changes: 52 additions & 1 deletion trunk/Documentation/dvb/get_dvb_firmware
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Expand Up @@ -25,7 +25,7 @@ use IO::Handle;
"tda10046lifeview", "av7110", "dec2000t", "dec2540t",
"dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",
"or51211", "or51132_qam", "or51132_vsb", "bluebird",
"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2" );
"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2", "mpc718" );

# Check args
syntax() if (scalar(@ARGV) != 1);
Expand Down Expand Up @@ -381,6 +381,57 @@ sub cx18 {
$allfiles;
}

sub mpc718 {
my $archive = 'Yuan MPC718 TV Tuner Card 2.13.10.1016.zip';
my $url = "ftp://ftp.work.acer-euro.com/desktop/aspire_idea510/vista/Drivers/$archive";
my $fwfile = "dvb-cx18-mpc718-mt352.fw";
my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);

checkstandard();
wgetfile($archive, $url);
unzip($archive, $tmpdir);

my $sourcefile = "$tmpdir/Yuan MPC718 TV Tuner Card 2.13.10.1016/mpc718_32bit/yuanrap.sys";
my $found = 0;

open IN, '<', $sourcefile or die "Couldn't open $sourcefile to extract $fwfile data\n";
binmode IN;
open OUT, '>', $fwfile;
binmode OUT;
{
# Block scope because we change the line terminator variable $/
my $prevlen = 0;
my $currlen;

# Buried in the data segment are 3 runs of almost identical
# register-value pairs that end in 0x5d 0x01 which is a "TUNER GO"
# command for the MT352.
# Pull out the middle run (because it's easy) of register-value
# pairs to make the "firmware" file.

local $/ = "\x5d\x01"; # MT352 "TUNER GO"

while (<IN>) {
$currlen = length($_);
if ($prevlen == $currlen && $currlen <= 64) {
chop; chop; # Get rid of "TUNER GO"
s/^\0\0//; # get rid of leading 00 00 if it's there
printf OUT "$_";
$found = 1;
last;
}
$prevlen = $currlen;
}
}
close OUT;
close IN;
if (!$found) {
unlink $fwfile;
die "Couldn't find valid register-value sequence in $sourcefile for $fwfile\n";
}
$fwfile;
}

sub cx23885 {
my $url = "http://linuxtv.org/downloads/firmware/";

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10 changes: 10 additions & 0 deletions trunk/Documentation/feature-removal-schedule.txt
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Expand Up @@ -458,3 +458,13 @@ Why: Remove the old legacy 32bit machine check code. This has been
but the old version has been kept around for easier testing. Note this
doesn't impact the old P5 and WinChip machine check handlers.
Who: Andi Kleen <andi@firstfloor.org>

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

What: lock_policy_rwsem_* and unlock_policy_rwsem_* will not be
exported interface anymore.
When: 2.6.33
Why: cpu_policy_rwsem has a new cleaner definition making it local to
cpufreq core and contained inside cpufreq.c. Other dependent
drivers should not use it in order to safely avoid lockdep issues.
Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
25 changes: 16 additions & 9 deletions trunk/Documentation/gcov.txt
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Expand Up @@ -188,13 +188,18 @@ Solution: Exclude affected source files from profiling by specifying
GCOV_PROFILE := n or GCOV_PROFILE_basename.o := n in the
corresponding Makefile.

Problem: Files copied from sysfs appear empty or incomplete.
Cause: Due to the way seq_file works, some tools such as cp or tar
may not correctly copy files from sysfs.
Solution: Use 'cat' to read .gcda files and 'cp -d' to copy links.
Alternatively use the mechanism shown in Appendix B.


Appendix A: gather_on_build.sh
==============================

Sample script to gather coverage meta files on the build machine
(see 6a):

#!/bin/bash

KSRC=$1
Expand Down Expand Up @@ -226,7 +231,7 @@ Appendix B: gather_on_test.sh
Sample script to gather coverage data files on the test machine
(see 6b):

#!/bin/bash
#!/bin/bash -e

DEST=$1
GCDA=/sys/kernel/debug/gcov
Expand All @@ -236,11 +241,13 @@ if [ -z "$DEST" ] ; then
exit 1
fi

find $GCDA -name '*.gcno' -o -name '*.gcda' | tar cfz $DEST -T -
TEMPDIR=$(mktemp -d)
echo Collecting data..
find $GCDA -type d -exec mkdir -p $TEMPDIR/\{\} \;
find $GCDA -name '*.gcda' -exec sh -c 'cat < $0 > '$TEMPDIR'/$0' {} \;
find $GCDA -name '*.gcno' -exec sh -c 'cp -d $0 '$TEMPDIR'/$0' {} \;
tar czf $DEST -C $TEMPDIR sys
rm -rf $TEMPDIR

if [ $? -eq 0 ] ; then
echo "$DEST successfully created, copy to build system and unpack with:"
echo " tar xfz $DEST"
else
echo "Could not create file $DEST"
fi
echo "$DEST successfully created, copy to build system and unpack with:"
echo " tar xfz $DEST"
4 changes: 2 additions & 2 deletions trunk/Documentation/kernel-parameters.txt
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Expand Up @@ -1720,8 +1720,8 @@ and is between 256 and 4096 characters. It is defined in the file
oprofile.cpu_type= Force an oprofile cpu type
This might be useful if you have an older oprofile
userland or if you want common events.
Format: { archperfmon }
archperfmon: [X86] Force use of architectural
Format: { arch_perfmon }
arch_perfmon: [X86] Force use of architectural
perfmon on Intel CPUs instead of the
CPU specific event set.

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23 changes: 16 additions & 7 deletions trunk/Documentation/kmemleak.txt
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Expand Up @@ -16,13 +16,17 @@ Usage
-----

CONFIG_DEBUG_KMEMLEAK in "Kernel hacking" has to be enabled. A kernel
thread scans the memory every 10 minutes (by default) and prints any new
unreferenced objects found. To trigger an intermediate scan and display
all the possible memory leaks:
thread scans the memory every 10 minutes (by default) and prints the
number of new unreferenced objects found. To display the details of all
the possible memory leaks:

# mount -t debugfs nodev /sys/kernel/debug/
# cat /sys/kernel/debug/kmemleak

To trigger an intermediate memory scan:

# echo scan > /sys/kernel/debug/kmemleak

Note that the orphan objects are listed in the order they were allocated
and one object at the beginning of the list may cause other subsequent
objects to be reported as orphan.
Expand All @@ -31,16 +35,21 @@ Memory scanning parameters can be modified at run-time by writing to the
/sys/kernel/debug/kmemleak file. The following parameters are supported:

off - disable kmemleak (irreversible)
stack=on - enable the task stacks scanning
stack=on - enable the task stacks scanning (default)
stack=off - disable the tasks stacks scanning
scan=on - start the automatic memory scanning thread
scan=on - start the automatic memory scanning thread (default)
scan=off - stop the automatic memory scanning thread
scan=<secs> - set the automatic memory scanning period in seconds (0
to disable it)
scan=<secs> - set the automatic memory scanning period in seconds
(default 600, 0 to stop the automatic scanning)
scan - trigger a memory scan

Kmemleak can also be disabled at boot-time by passing "kmemleak=off" on
the kernel command line.

Memory may be allocated or freed before kmemleak is initialised and
these actions are stored in an early log buffer. The size of this buffer
is configured via the CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE option.

Basic Algorithm
---------------

Expand Down
13 changes: 7 additions & 6 deletions trunk/Documentation/scheduler/sched-rt-group.txt
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Expand Up @@ -73,7 +73,7 @@ The remaining CPU time will be used for user input and other tasks. Because
realtime tasks have explicitly allocated the CPU time they need to perform
their tasks, buffer underruns in the graphics or audio can be eliminated.

NOTE: the above example is not fully implemented as of yet (2.6.25). We still
NOTE: the above example is not fully implemented yet. We still
lack an EDF scheduler to make non-uniform periods usable.


Expand Down Expand Up @@ -140,14 +140,15 @@ The other option is:

.o CONFIG_CGROUP_SCHED (aka "Basis for grouping tasks" = "Control groups")

This uses the /cgroup virtual file system and "/cgroup/<cgroup>/cpu.rt_runtime_us"
to control the CPU time reserved for each control group instead.
This uses the /cgroup virtual file system and
"/cgroup/<cgroup>/cpu.rt_runtime_us" to control the CPU time reserved for each
control group instead.

For more information on working with control groups, you should read
Documentation/cgroups/cgroups.txt as well.

Group settings are checked against the following limits in order to keep the configuration
schedulable:
Group settings are checked against the following limits in order to keep the
configuration schedulable:

\Sum_{i} runtime_{i} / global_period <= global_runtime / global_period

Expand Down Expand Up @@ -189,7 +190,7 @@ Implementing SCHED_EDF might take a while to complete. Priority Inheritance is
the biggest challenge as the current linux PI infrastructure is geared towards
the limited static priority levels 0-99. With deadline scheduling you need to
do deadline inheritance (since priority is inversely proportional to the
deadline delta (deadline - now).
deadline delta (deadline - now)).

This means the whole PI machinery will have to be reworked - and that is one of
the most complex pieces of code we have.
1 change: 1 addition & 0 deletions trunk/Documentation/sound/alsa/HD-Audio-Models.txt
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Expand Up @@ -240,6 +240,7 @@ AD1986A
laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
ultra 2-channel with EAPD (Samsung Ultra tablet PC)
samsung 2-channel with EAPD (Samsung R65)
samsung-p50 2-channel with HP-automute (Samsung P50)

AD1988/AD1988B/AD1989A/AD1989B
==============================
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10 changes: 9 additions & 1 deletion trunk/Documentation/spi/spidev_test.c
Original file line number Diff line number Diff line change
Expand Up @@ -99,11 +99,13 @@ void parse_opts(int argc, char *argv[])
{ "lsb", 0, 0, 'L' },
{ "cs-high", 0, 0, 'C' },
{ "3wire", 0, 0, '3' },
{ "no-cs", 0, 0, 'N' },
{ "ready", 0, 0, 'R' },
{ NULL, 0, 0, 0 },
};
int c;

c = getopt_long(argc, argv, "D:s:d:b:lHOLC3", lopts, NULL);
c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR", lopts, NULL);

if (c == -1)
break;
Expand Down Expand Up @@ -139,6 +141,12 @@ void parse_opts(int argc, char *argv[])
case '3':
mode |= SPI_3WIRE;
break;
case 'N':
mode |= SPI_NO_CS;
break;
case 'R':
mode |= SPI_READY;
break;
default:
print_usage(argv[0]);
break;
Expand Down
1 change: 1 addition & 0 deletions trunk/Documentation/video4linux/CARDLIST.em28xx
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Expand Up @@ -66,3 +66,4 @@
68 -> Terratec AV350 (em2860) [0ccd:0084]
69 -> KWorld ATSC 315U HDTV TV Box (em2882) [eb1a:a313]
70 -> Evga inDtube (em2882)
71 -> Silvercrest Webcam 1.3mpix (em2820/em2840)
2 changes: 2 additions & 0 deletions trunk/Documentation/x86/00-INDEX
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Expand Up @@ -2,3 +2,5 @@
- this file
mtrr.txt
- how to use x86 Memory Type Range Registers to increase performance
exception-tables.txt
- why and how Linux kernel uses exception tables on x86
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