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yaml
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r: 148949
b: refs/heads/master
c: c076b99
h: refs/heads/master
i:
  148947: 8e2d234
v: v3
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Ben Nizette authored and Haavard Skinnemoen committed Jun 3, 2009
1 parent ab587cb commit 73b7fcd
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 5c55b40b27bc3249358dcfc86c0845be409ab7a6
refs/heads/master: c076b9937f4912ffc09b30e155fe5246f002f21a
59 changes: 0 additions & 59 deletions trunk/Documentation/ABI/testing/sysfs-block
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Expand Up @@ -60,62 +60,3 @@ Description:
Indicates whether the block layer should automatically
generate checksums for write requests bound for
devices that support receiving integrity metadata.

What: /sys/block/<disk>/alignment_offset
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report a physical block size that is
bigger than the logical block size (for instance a drive
with 4KB physical sectors exposing 512-byte logical
blocks to the operating system). This parameter
indicates how many bytes the beginning of the device is
offset from the disk's natural alignment.

What: /sys/block/<disk>/<partition>/alignment_offset
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report a physical block size that is
bigger than the logical block size (for instance a drive
with 4KB physical sectors exposing 512-byte logical
blocks to the operating system). This parameter
indicates how many bytes the beginning of the partition
is offset from the disk's natural alignment.

What: /sys/block/<disk>/queue/logical_block_size
Date: May 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
This is the smallest unit the storage device can
address. It is typically 512 bytes.

What: /sys/block/<disk>/queue/physical_block_size
Date: May 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
This is the smallest unit the storage device can write
without resorting to read-modify-write operation. It is
usually the same as the logical block size but may be
bigger. One example is SATA drives with 4KB sectors
that expose a 512-byte logical block size to the
operating system.

What: /sys/block/<disk>/queue/minimum_io_size
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report a preferred minimum I/O size,
which is the smallest request the device can perform
without incurring a read-modify-write penalty. For disk
drives this is often the physical block size. For RAID
arrays it is often the stripe chunk size.

What: /sys/block/<disk>/queue/optimal_io_size
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report an optimal I/O size, which is
the device's preferred unit of receiving I/O. This is
rarely reported for disk drives. For RAID devices it is
usually the stripe width or the internal block size.
33 changes: 0 additions & 33 deletions trunk/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss

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18 changes: 0 additions & 18 deletions trunk/Documentation/ABI/testing/sysfs-devices-cache_disable

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15 changes: 0 additions & 15 deletions trunk/Documentation/Changes
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Expand Up @@ -48,7 +48,6 @@ o procps 3.2.0 # ps --version
o oprofile 0.9 # oprofiled --version
o udev 081 # udevinfo -V
o grub 0.93 # grub --version
o mcelog 0.6

Kernel compilation
==================
Expand Down Expand Up @@ -277,16 +276,6 @@ before running exportfs or mountd. It is recommended that all NFS
services be protected from the internet-at-large by a firewall where
that is possible.

mcelog
------

In Linux 2.6.31+ the i386 kernel needs to run the mcelog utility
as a regular cronjob similar to the x86-64 kernel to process and log
machine check events when CONFIG_X86_NEW_MCE is enabled. Machine check
events are errors reported by the CPU. Processing them is strongly encouraged.
All x86-64 kernels since 2.6.4 require the mcelog utility to
process machine checks.

Getting updated software
========================

Expand Down Expand Up @@ -376,10 +365,6 @@ FUSE
----
o <http://sourceforge.net/projects/fuse>

mcelog
------
o <ftp://ftp.kernel.org/pub/linux/utils/cpu/mce/mcelog/>

Networking
**********

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12 changes: 0 additions & 12 deletions trunk/Documentation/DMA-API.txt
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Expand Up @@ -704,24 +704,12 @@ this directory the following files can currently be found:
The current number of free dma_debug_entries
in the allocator.

dma-api/driver-filter
You can write a name of a driver into this file
to limit the debug output to requests from that
particular driver. Write an empty string to
that file to disable the filter and see
all errors again.

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.

If you want to see debug messages only for a special device driver you can
specify the dma_debug_driver=<drivername> parameter. This will enable the
driver filter at boot time. The debug code will only print errors for that
driver afterwards. This filter can be disabled or changed later using debugfs.

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
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3 changes: 1 addition & 2 deletions trunk/Documentation/DocBook/Makefile
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Expand Up @@ -13,8 +13,7 @@ DOCBOOKS := z8530book.xml mcabook.xml device-drivers.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 \
alsa-driver-api.xml writing-an-alsa-driver.xml \
tracepoint.xml
alsa-driver-api.xml writing-an-alsa-driver.xml

###
# The build process is as follows (targets):
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89 changes: 0 additions & 89 deletions trunk/Documentation/DocBook/tracepoint.tmpl

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