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r: 113387
b: refs/heads/master
c: 8daf14c
h: refs/heads/master
i:
  113385: d234488
  113383: ade22e4
v: v3
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Ingo Molnar committed Oct 12, 2008
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 2407390bd20de38740eef87eab4fe3d1deafdbdd
refs/heads/master: 8daf14cf56816303d64d1a705fcbc389211ba36e
2 changes: 0 additions & 2 deletions trunk/Documentation/00-INDEX
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Expand Up @@ -251,8 +251,6 @@ mono.txt
- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.
moxa-smartio
- file with info on installing/using Moxa multiport serial driver.
mtrr.txt
- how to use PPro Memory Type Range Registers to increase performance.
mutex-design.txt
- info on the generic mutex subsystem.
namespaces/
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2 changes: 1 addition & 1 deletion trunk/Documentation/DMA-API.txt
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Expand Up @@ -337,7 +337,7 @@ With scatterlists, you use the resulting mapping like this:
int i, count = dma_map_sg(dev, sglist, nents, direction);
struct scatterlist *sg;

for (i = 0, sg = sglist; i < count; i++, sg++) {
for_each_sg(sglist, sg, count, i) {
hw_address[i] = sg_dma_address(sg);
hw_len[i] = sg_dma_len(sg);
}
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5 changes: 5 additions & 0 deletions trunk/Documentation/DocBook/kernel-api.tmpl
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Expand Up @@ -283,6 +283,7 @@ X!Earch/x86/kernel/mca_32.c
<chapter id="security">
<title>Security Framework</title>
!Isecurity/security.c
!Esecurity/inode.c
</chapter>

<chapter id="audit">
Expand Down Expand Up @@ -364,6 +365,10 @@ X!Edrivers/pnp/system.c
!Eblock/blk-barrier.c
!Eblock/blk-tag.c
!Iblock/blk-tag.c
!Eblock/blk-integrity.c
!Iblock/blktrace.c
!Iblock/genhd.c
!Eblock/genhd.c
</chapter>

<chapter id="chrdev">
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12 changes: 4 additions & 8 deletions trunk/Documentation/DocBook/mac80211.tmpl
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Expand Up @@ -145,7 +145,6 @@ usage should require reading the full document.
this though and the recommendation to allow only a single
interface in STA mode at first!
</para>
!Finclude/net/mac80211.h ieee80211_if_types
!Finclude/net/mac80211.h ieee80211_if_init_conf
!Finclude/net/mac80211.h ieee80211_if_conf
</chapter>
Expand Down Expand Up @@ -177,8 +176,7 @@ usage should require reading the full document.
<title>functions/definitions</title>
!Finclude/net/mac80211.h ieee80211_rx_status
!Finclude/net/mac80211.h mac80211_rx_flags
!Finclude/net/mac80211.h ieee80211_tx_control
!Finclude/net/mac80211.h ieee80211_tx_status_flags
!Finclude/net/mac80211.h ieee80211_tx_info
!Finclude/net/mac80211.h ieee80211_rx
!Finclude/net/mac80211.h ieee80211_rx_irqsafe
!Finclude/net/mac80211.h ieee80211_tx_status
Expand All @@ -189,12 +187,11 @@ usage should require reading the full document.
!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_get_hdrlen
!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_start_queues
!Finclude/net/mac80211.h ieee80211_stop_queues
!Finclude/net/mac80211.h ieee80211_wake_queues
!Finclude/net/mac80211.h ieee80211_stop_queues
</sect1>
</chapter>

Expand Down Expand Up @@ -230,8 +227,7 @@ usage should require reading the full document.
<title>Multiple queues and QoS support</title>
<para>TBD</para>
!Finclude/net/mac80211.h ieee80211_tx_queue_params
!Finclude/net/mac80211.h ieee80211_tx_queue_stats_data
!Finclude/net/mac80211.h ieee80211_tx_queue
!Finclude/net/mac80211.h ieee80211_tx_queue_stats
</chapter>

<chapter id="AP">
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3 changes: 2 additions & 1 deletion trunk/Documentation/HOWTO
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Expand Up @@ -77,7 +77,8 @@ documentation files are also added which explain how to use the feature.
When a kernel change causes the interface that the kernel exposes to
userspace to change, it is recommended that you send the information or
a patch to the manual pages explaining the change to the manual pages
maintainer at mtk.manpages@gmail.com.
maintainer at mtk.manpages@gmail.com, and CC the list
linux-api@vger.kernel.org.

Here is a list of files that are in the kernel source tree that are
required reading:
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2 changes: 1 addition & 1 deletion trunk/Documentation/RCU/checklist.txt
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Expand Up @@ -210,7 +210,7 @@ over a rather long period of time, but improvements are always welcome!
number of updates per grace period.

9. All RCU list-traversal primitives, which include
rcu_dereference(), list_for_each_rcu(), list_for_each_entry_rcu(),
rcu_dereference(), list_for_each_entry_rcu(),
list_for_each_continue_rcu(), and list_for_each_safe_rcu(),
must be either within an RCU read-side critical section or
must be protected by appropriate update-side locks. RCU
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16 changes: 8 additions & 8 deletions trunk/Documentation/RCU/rcuref.txt
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Expand Up @@ -29,9 +29,9 @@ release_referenced() delete()
}

If this list/array is made lock free using RCU as in changing the
write_lock() in add() and delete() to spin_lock and changing read_lock
in search_and_reference to rcu_read_lock(), the atomic_get in
search_and_reference could potentially hold reference to an element which
write_lock() in add() and delete() to spin_lock() and changing read_lock()
in search_and_reference() to rcu_read_lock(), the atomic_inc() in
search_and_reference() could potentially hold reference to an element which
has already been deleted from the list/array. Use atomic_inc_not_zero()
in this scenario as follows:

Expand All @@ -40,20 +40,20 @@ add() search_and_reference()
{ {
alloc_object rcu_read_lock();
... search_for_element
atomic_set(&el->rc, 1); if (atomic_inc_not_zero(&el->rc)) {
write_lock(&list_lock); rcu_read_unlock();
atomic_set(&el->rc, 1); if (!atomic_inc_not_zero(&el->rc)) {
spin_lock(&list_lock); rcu_read_unlock();
return FAIL;
add_element }
... ...
write_unlock(&list_lock); rcu_read_unlock();
spin_unlock(&list_lock); rcu_read_unlock();
} }
3. 4.
release_referenced() delete()
{ {
... write_lock(&list_lock);
... spin_lock(&list_lock);
if (atomic_dec_and_test(&el->rc)) ...
call_rcu(&el->head, el_free); delete_element
... write_unlock(&list_lock);
... spin_unlock(&list_lock);
} ...
if (atomic_dec_and_test(&el->rc))
call_rcu(&el->head, el_free);
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2 changes: 0 additions & 2 deletions trunk/Documentation/RCU/whatisRCU.txt
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Expand Up @@ -786,8 +786,6 @@ RCU pointer/list traversal:
list_for_each_entry_rcu
hlist_for_each_entry_rcu

list_for_each_rcu (to be deprecated in favor of
list_for_each_entry_rcu)
list_for_each_continue_rcu (to be deprecated in favor of new
list_for_each_entry_continue_rcu)

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27 changes: 27 additions & 0 deletions trunk/Documentation/SELinux.txt
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If you want to use SELinux, chances are you will want
to use the distro-provided policies, or install the
latest reference policy release from
http://oss.tresys.com/projects/refpolicy

However, if you want to install a dummy policy for
testing, you can do using 'mdp' provided under
scripts/selinux. Note that this requires the selinux
userspace to be installed - in particular you will
need checkpolicy to compile a kernel, and setfiles and
fixfiles to label the filesystem.

1. Compile the kernel with selinux enabled.
2. Type 'make' to compile mdp.
3. Make sure that you are not running with
SELinux enabled and a real policy. If
you are, reboot with selinux disabled
before continuing.
4. Run install_policy.sh:
cd scripts/selinux
sh install_policy.sh

Step 4 will create a new dummy policy valid for your
kernel, with a single selinux user, role, and type.
It will compile the policy, will set your SELINUXTYPE to
dummy in /etc/selinux/config, install the compiled policy
as 'dummy', and relabel your filesystem.
2 changes: 2 additions & 0 deletions trunk/Documentation/SubmitChecklist
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Expand Up @@ -67,6 +67,8 @@ kernel patches.

19: All new userspace interfaces are documented in Documentation/ABI/.
See Documentation/ABI/README for more information.
Patches that change userspace interfaces should be CCed to
linux-api@vger.kernel.org.

20: Check that it all passes `make headers_check'.

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14 changes: 10 additions & 4 deletions trunk/Documentation/block/deadline-iosched.txt
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Expand Up @@ -30,12 +30,18 @@ write_expire (in ms)
Similar to read_expire mentioned above, but for writes.


fifo_batch
fifo_batch (number of requests)
----------

When a read request expires its deadline, we must move some requests from
the sorted io scheduler list to the block device dispatch queue. fifo_batch
controls how many requests we move.
Requests are grouped into ``batches'' of a particular data direction (read or
write) which are serviced in increasing sector order. To limit extra seeking,
deadline expiries are only checked between batches. fifo_batch controls the
maximum number of requests per batch.

This parameter tunes the balance between per-request latency and aggregate
throughput. When low latency is the primary concern, smaller is better (where
a value of 1 yields first-come first-served behaviour). Increasing fifo_batch
generally improves throughput, at the cost of latency variation.


writes_starved (number of dispatches)
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3 changes: 1 addition & 2 deletions trunk/Documentation/cdrom/ide-cd
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Expand Up @@ -145,8 +145,7 @@ useful for reading photocds.

To play an audio CD, you should first unmount and remove any data
CDROM. Any of the CDROM player programs should then work (workman,
workbone, cdplayer, etc.). Lacking anything else, you could use the
cdtester program in Documentation/cdrom/sbpcd.
workbone, cdplayer, etc.).

On a few drives, you can read digital audio directly using a program
such as cdda2wav. The only types of drive which I've heard support
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10 changes: 4 additions & 6 deletions trunk/Documentation/cpu-freq/index.txt
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Expand Up @@ -35,11 +35,9 @@ Mailing List
------------
There is a CPU frequency changing CVS commit and general list where
you can report bugs, problems or submit patches. To post a message,
send an email to cpufreq@lists.linux.org.uk, to subscribe go to
http://lists.linux.org.uk/mailman/listinfo/cpufreq. Previous post to the
mailing list are available to subscribers at
http://lists.linux.org.uk/mailman/private/cpufreq/.

send an email to cpufreq@vger.kernel.org, to subscribe go to
http://vger.kernel.org/vger-lists.html#cpufreq and follow the
instructions there.

Links
-----
Expand All @@ -50,7 +48,7 @@ how to access the CVS repository:
* http://cvs.arm.linux.org.uk/

the CPUFreq Mailing list:
* http://lists.linux.org.uk/mailman/listinfo/cpufreq
* http://vger.kernel.org/vger-lists.html#cpufreq

Clock and voltage scaling for the SA-1100:
* http://www.lartmaker.nl/projects/scaling
21 changes: 21 additions & 0 deletions trunk/Documentation/feature-removal-schedule.txt
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Expand Up @@ -6,6 +6,24 @@ be removed from this file.

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

What: old static regulatory information and ieee80211_regdom module parameter
When: 2.6.29
Why: The old regulatory infrastructure has been replaced with a new one
which does not require statically defined regulatory domains. We do
not want to keep static regulatory domains in the kernel due to the
the dynamic nature of regulatory law and localization. We kept around
the old static definitions for the regulatory domains of:
* US
* JP
* EU
and used by default the US when CONFIG_WIRELESS_OLD_REGULATORY was
set. We also kept around the ieee80211_regdom module parameter in case
some applications were relying on it. Changing regulatory domains
can now be done instead by using nl80211, as is done with iw.
Who: Luis R. Rodriguez <lrodriguez@atheros.com>

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

What: dev->power.power_state
When: July 2007
Why: Broken design for runtime control over driver power states, confusing
Expand Down Expand Up @@ -232,6 +250,9 @@ What (Why):
- xt_mark match revision 0
(superseded by xt_mark match revision 1)

- xt_recent: the old ipt_recent proc dir
(superseded by /proc/net/xt_recent)

When: January 2009 or Linux 2.7.0, whichever comes first
Why: Superseded by newer revisions or modules
Who: Jan Engelhardt <jengelh@computergmbh.de>
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14 changes: 10 additions & 4 deletions trunk/Documentation/filesystems/ext4.txt
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Expand Up @@ -32,9 +32,9 @@ Mailing list: linux-ext4@vger.kernel.org
you will need to merge your changes with the version from e2fsprogs
1.41.x.

- Create a new filesystem using the ext4dev filesystem type:
- Create a new filesystem using the ext4 filesystem type:

# mke2fs -t ext4dev /dev/hda1
# mke2fs -t ext4 /dev/hda1

Or configure an existing ext3 filesystem to support extents and set
the test_fs flag to indicate that it's ok for an in-development
Expand All @@ -47,13 +47,13 @@ Mailing list: linux-ext4@vger.kernel.org

# tune2fs -I 256 /dev/hda1

(Note: we currently do not have tools to convert an ext4dev
(Note: we currently do not have tools to convert an ext4
filesystem back to ext3; so please do not do try this on production
filesystems.)

- Mounting:

# mount -t ext4dev /dev/hda1 /wherever
# mount -t ext4 /dev/hda1 /wherever

- When comparing performance with other filesystems, remember that
ext3/4 by default offers higher data integrity guarantees than most.
Expand Down Expand Up @@ -177,6 +177,11 @@ barrier=<0|1(*)> This enables/disables the use of write barriers in
your disks are battery-backed in one way or another,
disabling barriers may safely improve performance.

inode_readahead=n This tuning parameter controls the maximum
number of inode table blocks that ext4's inode
table readahead algorithm will pre-read into
the buffer cache. The default value is 32 blocks.

orlov (*) This enables the new Orlov block allocator. It is
enabled by default.

Expand Down Expand Up @@ -252,6 +257,7 @@ stripe=n Number of filesystem blocks that mballoc will try
delalloc (*) Deferring block allocation until write-out time.
nodelalloc Disable delayed allocation. Blocks are allocation
when data is copied from user to page cache.

Data Mode
=========
There are 3 different data modes:
Expand Down
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