Merge branch 'linus' into x86/iommu (6e03f998) · Commits · e / devices / android_kernel_xiaomi_markw

Documentation/ABI/testing/sysfs-gpio

0 → 100644

+26 −0

Original line number	Diff line number	Diff line
		What: /sys/class/gpio/
		Date: July 2008
		KernelVersion: 2.6.27
		Contact: David Brownell <dbrownell@users.sourceforge.net>
		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)

Documentation/cpusets.txt

+10 −8

Original line number	Diff line number	Diff line
		@@ -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.

Documentation/feature-removal-schedule.txt

+8 −0

Original line number	Diff line number	Diff line
		@@ -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 <ole@ans.pl>

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

		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 <fujita.tomonori@lab.ntt.co.jp>

Documentation/filesystems/proc.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -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.

MAINTAINERS

+1 −1

Original line number	Diff line number	Diff line
		@@ -4365,7 +4365,7 @@ S: Maintained
		USB VIDEO CLASS
		P: Laurent Pinchart
		M: laurent.pinchart@skynet.be
		L: linx-uvc-devel@berlios.de
		L: linux-uvc-devel@lists.berlios.de
		L: video4linux-list@redhat.com
		W: http://linux-uvc.berlios.de
		S: Maintained