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r: 209652
b: refs/heads/master
c: d1126ad
h: refs/heads/master
v: v3
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Linus Torvalds committed Aug 18, 2010
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 83e4491818040ae6b2d9fc60434616304a101d39
refs/heads/master: d1126ad907ce197ff45fbc2369fbeaf8ae6f75a8
4 changes: 2 additions & 2 deletions trunk/Documentation/00-INDEX
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Expand Up @@ -130,8 +130,6 @@ edac.txt
- information on EDAC - Error Detection And Correction
eisa.txt
- info on EISA bus support.
exception.txt
- how Linux v2.2 handles exceptions without verify_area etc.
fault-injection/
- dir with docs about the fault injection capabilities infrastructure.
fb/
Expand Down Expand Up @@ -234,6 +232,8 @@ memory.txt
- info on typical Linux memory problems.
mips/
- directory with info about Linux on MIPS architecture.
mmc/
- directory with info about the MMC subsystem
mono.txt
- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.
mutex-design.txt
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71 changes: 0 additions & 71 deletions trunk/Documentation/ABI/testing/debugfs-kmemtrace

This file was deleted.

21 changes: 21 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-bus-i2c-devices-hm6352
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Where: /sys/bus/i2c/devices/.../heading0_input
Date: April 2010
Kernel Version: 2.6.36?
Contact: alan.cox@intel.com
Description: Reports the current heading from the compass as a floating
point value in degrees.

Where: /sys/bus/i2c/devices/.../power_state
Date: April 2010
Kernel Version: 2.6.36?
Contact: alan.cox@intel.com
Description: Sets the power state of the device. 0 sets the device into
sleep mode, 1 wakes it up.

Where: /sys/bus/i2c/devices/.../calibration
Date: April 2010
Kernel Version: 2.6.36?
Contact: alan.cox@intel.com
Description: Sets the calibration on or off (1 = on, 0 = off). See the
chip data sheet.

27 changes: 27 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-bus-pci
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Expand Up @@ -139,3 +139,30 @@ Contact: linux-pci@vger.kernel.org
Description:
This symbolic link points to the PCI hotplug controller driver
module that manages the hotplug slot.

What: /sys/bus/pci/devices/.../label
Date: July 2010
Contact: Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
Description:
Reading this attribute will provide the firmware
given name(SMBIOS type 41 string) of the PCI device.
The attribute will be created only if the firmware
has given a name to the PCI device.
Users:
Userspace applications interested in knowing the
firmware assigned name of the PCI device.

What: /sys/bus/pci/devices/.../index
Date: July 2010
Contact: Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
Description:
Reading this attribute will provide the firmware
given instance(SMBIOS type 41 device type instance)
of the PCI device. The attribute will be created
only if the firmware has given a device type instance
to the PCI device.
Users:
Userspace applications interested in knowing the
firmware assigned device type instance of the PCI
device that can help in understanding the firmware
intended order of the PCI device.
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Expand Up @@ -7,3 +7,15 @@ Description:
0 -> resumed

(_UDC_ is the name of the USB Device Controller driver)

What: /sys/devices/platform/_UDC_/gadget/gadget-lunX/nofua
Date: July 2010
Contact: Andy Shevchenko <andy.shevchenko@gmail.com>
Description:
Show or set the reaction on the FUA (Force Unit Access) bit in
the SCSI WRITE(10,12) commands when a gadget in USB Mass
Storage mode.

Possible values are:
1 -> ignore the FUA flag
0 -> obey the FUA flag
31 changes: 31 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-i2c-bmp085
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What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input
Date: June 2010
Contact: Christoph Mair <christoph.mair@gmail.com>
Description: Start a pressure measurement and read the result. Values
represent the ambient air pressure in pascal (0.01 millibar).

Reading: returns the current air pressure.


What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input
Date: June 2010
Contact: Christoph Mair <christoph.mair@gmail.com>
Description: Measure the ambient temperature. The returned value represents
the ambient temperature in units of 0.1 degree celsius.

Reading: returns the current temperature.


What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling
Date: June 2010
Contact: Christoph Mair <christoph.mair@gmail.com>
Description: Tell the bmp085 to use more samples to calculate a pressure
value. When writing to this file the chip will use 2^x samples
to calculate the next pressure value with x being the value
written. Using this feature will decrease RMS noise and
increase the measurement time.

Reading: returns the current oversampling setting.

Writing: sets a new oversampling setting.
Accepted values: 0..3.
16 changes: 13 additions & 3 deletions trunk/Documentation/DMA-API-HOWTO.txt
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Expand Up @@ -738,21 +738,31 @@ to "Closing".
CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs
(including software IOMMU).

2) ARCH_KMALLOC_MINALIGN
2) ARCH_DMA_MINALIGN

Architectures must ensure that kmalloc'ed buffer is
DMA-safe. Drivers and subsystems depend on it. If an architecture
isn't fully DMA-coherent (i.e. hardware doesn't ensure that data in
the CPU cache is identical to data in main memory),
ARCH_KMALLOC_MINALIGN must be set so that the memory allocator
ARCH_DMA_MINALIGN must be set so that the memory allocator
makes sure that kmalloc'ed buffer doesn't share a cache line with
the others. See arch/arm/include/asm/cache.h as an example.

Note that ARCH_KMALLOC_MINALIGN is about DMA memory alignment
Note that ARCH_DMA_MINALIGN is about DMA memory alignment
constraints. You don't need to worry about the architecture data
alignment constraints (e.g. the alignment constraints about 64-bit
objects).

3) Supporting multiple types of IOMMUs

If your architecture needs to support multiple types of IOMMUs, you
can use include/linux/asm-generic/dma-mapping-common.h. It's a
library to support the DMA API with multiple types of IOMMUs. Lots
of architectures (x86, powerpc, sh, alpha, ia64, microblaze and
sparc) use it. Choose one to see how it can be used. If you need to
support multiple types of IOMMUs in a single system, the example of
x86 or powerpc helps.

Closing

This document, and the API itself, would not be in its current
Expand Down
6 changes: 0 additions & 6 deletions trunk/Documentation/DMA-API.txt
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Expand Up @@ -455,12 +455,6 @@ Free memory allocated by the nonconsistent API. All parameters must
be identical to those passed in (and returned by
dma_alloc_noncoherent()).

int
dma_is_consistent(struct device *dev, dma_addr_t dma_handle)

Returns true if the device dev is performing consistent DMA on the memory
area pointed to by the dma_handle.

int
dma_get_cache_alignment(void)

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6 changes: 3 additions & 3 deletions trunk/Documentation/DocBook/Makefile
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Expand Up @@ -35,7 +35,7 @@ PS_METHOD = $(prefer-db2x)
PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs xmldoclinks

BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
xmldocs: $(BOOKS) xmldoclinks
xmldocs: $(BOOKS)
sgmldocs: xmldocs

PS := $(patsubst %.xml, %.ps, $(BOOKS))
Expand All @@ -45,7 +45,7 @@ PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
pdfdocs: $(PDF)

HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
htmldocs: $(HTML)
htmldocs: $(HTML) xmldoclinks
$(call build_main_index)
$(call build_images)

Expand Down Expand Up @@ -95,7 +95,7 @@ define rule_docproc
) > $(dir $@).$(notdir $@).cmd
endef

%.xml: %.tmpl FORCE
%.xml: %.tmpl xmldoclinks FORCE
$(call if_changed_rule,docproc)

###
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1 change: 1 addition & 0 deletions trunk/Documentation/DocBook/device-drivers.tmpl
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Expand Up @@ -111,6 +111,7 @@ X!Edrivers/base/attribute_container.c
<!--
X!Edrivers/base/interface.c
-->
!Iinclude/linux/platform_device.h
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>
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1 change: 0 additions & 1 deletion trunk/Documentation/DocBook/kernel-api.tmpl
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Expand Up @@ -132,7 +132,6 @@ X!Ilib/string.c
<title>FIFO Buffer</title>
<sect1><title>kfifo interface</title>
!Iinclude/linux/kfifo.h
!Ekernel/kfifo.c
</sect1>
</chapter>

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