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Merge branch 'for-rmk' of git://source.mvista.com/git/linux-davinci-2…
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Merge branch 'davinci' into devel
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Russell King authored and Russell King committed Oct 9, 2008
2 parents b1add04 + 7bff3c4 commit c97f681
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2 changes: 2 additions & 0 deletions .mailmap
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Expand Up @@ -96,4 +96,6 @@ Tejun Heo <[email protected]>
Thomas Graf <[email protected]>
Tony Luck <[email protected]>
Tsuneo Yoshioka <[email protected]>
Uwe Kleine-König <[email protected]>
Uwe Kleine-König <[email protected]>
Valdis Kletnieks <[email protected]>
26 changes: 26 additions & 0 deletions Documentation/ABI/testing/sysfs-gpio
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@@ -0,0 +1,26 @@
What: /sys/class/gpio/
Date: July 2008
KernelVersion: 2.6.27
Contact: David Brownell <[email protected]>
Description:

As a Kconfig option, individual GPIO signals may be accessed from
userspace. GPIOs are only made available to userspace by an explicit
"export" operation. If a given GPIO is not claimed for use by
kernel code, it may be exported by userspace (and unexported later).
Kernel code may export it for complete or partial access.

GPIOs are identified as they are inside the kernel, using integers in
the range 0..INT_MAX. See Documentation/gpio.txt for more information.

/sys/class/gpio
/export ... asks the kernel to export a GPIO to userspace
/unexport ... to return a GPIO to the kernel
/gpioN ... for each exported GPIO #N
/value ... always readable, writes fail for input GPIOs
/direction ... r/w as: in, out (default low); write: high, low
/gpiochipN ... for each gpiochip; #N is its first GPIO
/base ... (r/o) same as N
/label ... (r/o) descriptive, not necessarily unique
/ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1)

18 changes: 10 additions & 8 deletions Documentation/cpusets.txt
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Expand Up @@ -635,14 +635,16 @@ prior 'mems' setting, will not be moved.

There is an exception to the above. If hotplug functionality is used
to remove all the CPUs that are currently assigned to a cpuset,
then the kernel will automatically update the cpus_allowed of all
tasks attached to CPUs in that cpuset to allow all CPUs. When memory
hotplug functionality for removing Memory Nodes is available, a
similar exception is expected to apply there as well. In general,
the kernel prefers to violate cpuset placement, over starving a task
that has had all its allowed CPUs or Memory Nodes taken offline. User
code should reconfigure cpusets to only refer to online CPUs and Memory
Nodes when using hotplug to add or remove such resources.
then all the tasks in that cpuset will be moved to the nearest ancestor
with non-empty cpus. But the moving of some (or all) tasks might fail if
cpuset is bound with another cgroup subsystem which has some restrictions
on task attaching. In this failing case, those tasks will stay
in the original cpuset, and the kernel will automatically update
their cpus_allowed to allow all online CPUs. When memory hotplug
functionality for removing Memory Nodes is available, a similar exception
is expected to apply there as well. In general, the kernel prefers to
violate cpuset placement, over starving a task that has had all
its allowed CPUs or Memory Nodes taken offline.

There is a second exception to the above. GFP_ATOMIC requests are
kernel internal allocations that must be satisfied, immediately.
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8 changes: 8 additions & 0 deletions Documentation/feature-removal-schedule.txt
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Expand Up @@ -322,3 +322,11 @@ Why: Accounting can now be enabled/disabled without kernel recompilation.
controlled by a kernel/module/sysfs/sysctl parameter.
Who: Krzysztof Piotr Oledzki <[email protected]>

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

What: ide-scsi (BLK_DEV_IDESCSI)
When: 2.6.29
Why: The 2.6 kernel supports direct writing to ide CD drives, which
eliminates the need for ide-scsi. The new method is more
efficient in every way.
Who: FUJITA Tomonori <[email protected]>
2 changes: 2 additions & 0 deletions Documentation/filesystems/proc.txt
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Expand Up @@ -2413,6 +2413,8 @@ The following 4 memory types are supported:
- (bit 1) anonymous shared memory
- (bit 2) file-backed private memory
- (bit 3) file-backed shared memory
- (bit 4) ELF header pages in file-backed private memory areas (it is
effective only if the bit 2 is cleared)

Note that MMIO pages such as frame buffer are never dumped and vDSO pages
are always dumped regardless of the bitmask status.
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2 changes: 1 addition & 1 deletion MAINTAINERS
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Expand Up @@ -4377,7 +4377,7 @@ S: Maintained
USB VIDEO CLASS
P: Laurent Pinchart
M: [email protected]
L: linx[email protected]
L: linux-uvc-devel@lists.berlios.de
L: [email protected]
W: http://linux-uvc.berlios.de
S: Maintained
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1 change: 1 addition & 0 deletions arch/arm/Kconfig
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Expand Up @@ -524,6 +524,7 @@ config ARCH_DAVINCI
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
select ARCH_REQUIRE_GPIOLIB
select HAVE_CLK
select ZONE_DMA
help
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2 changes: 1 addition & 1 deletion arch/arm/include/asm/pci.h
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Expand Up @@ -30,7 +30,7 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
* The networking and block device layers use this boolean for bounce
* buffer decisions.
*/
#define PCI_DMA_BUS_IS_PHYS (0)
#define PCI_DMA_BUS_IS_PHYS (1)

/*
* Whether pci_unmap_{single,page} is a nop depends upon the
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2 changes: 1 addition & 1 deletion arch/arm/mach-davinci/Makefile
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Expand Up @@ -5,7 +5,7 @@

# Common objects
obj-y := time.o irq.o clock.o serial.o io.o id.o psc.o \
gpio.o mux.o
gpio.o mux.o devices.o usb.o

# Board specific
obj-$(CONFIG_MACH_DAVINCI_EVM) += board-evm.o
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