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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (31 commits)
  driver core: Display error codes when class suspend fails
  Driver core: Add section count to memory_block struct
  Driver core: Add mutex for adding/removing memory blocks
  Driver core: Move find_memory_block routine
  hpilo: Despecificate driver from iLO generation
  driver core: Convert link_mem_sections to use find_memory_block_hinted.
  driver core: Introduce find_memory_block_hinted which utilizes kset_find_obj_hinted.
  kobject: Introduce kset_find_obj_hinted.
  driver core: fix build for CONFIG_BLOCK not enabled
  driver-core: base: change to new flag variable
  sysfs: only access bin file vm_ops with the active lock
  sysfs: Fail bin file mmap if vma close is implemented.
  FW_LOADER: fix kconfig dependency warning on HOTPLUG
  uio: Statically allocate uio_class and use class .dev_attrs.
  uio: Support 2^MINOR_BITS minors
  uio: Cleanup irq handling.
  uio: Don't clear driver data
  uio: Fix lack of locking in init_uio_class
  SYSFS: Allow boot time switching between deprecated and modern sysfs layout
  driver core: remove CONFIG_SYSFS_DEPRECATED_V2 but keep it for block devices
  ...
This commit is contained in:
Linus Torvalds 2010-10-22 19:36:42 -07:00
commit b9da057105
34 changed files with 1238 additions and 516 deletions
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56
init/Kconfig
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@ -686,40 +686,42 @@ config MM_OWNER
bool
config SYSFS_DEPRECATED
bool
config SYSFS_DEPRECATED_V2
bool "enable deprecated sysfs features to support old userspace tools"
depends on SYSFS
default n
select SYSFS_DEPRECATED
help
This option switches the layout of sysfs to the deprecated
version. Do not use it on recent distributions.
This option adds code that switches the layout of the "block" class
devices, to not show up in /sys/class/block/, but only in
/sys/block/.
The current sysfs layout features a unified device tree at
/sys/devices/, which is able to express a hierarchy between
class devices. If the deprecated option is set to Y, the
unified device tree is split into a bus device tree at
/sys/devices/ and several individual class device trees at
/sys/class/. The class and bus devices will be connected by
"<subsystem>:<name>" and the "device" links. The "block"
class devices, will not show up in /sys/class/block/. Some
subsystems will suppress the creation of some devices which
depend on the unified device tree.
This switch is only active when the sysfs.deprecated=1 boot option is
passed or the SYSFS_DEPRECATED_V2 option is set.
This option is not a pure compatibility option that can
be safely enabled on newer distributions. It will change the
layout of sysfs to the non-extensible deprecated version,
and disable some features, which can not be exported without
confusing older userspace tools. Since 2007/2008 all major
distributions do not enable this option, and ship no tools which
depend on the deprecated layout or this option.
This option allows new kernels to run on old distributions and tools,
which might get confused by /sys/class/block/. Since 2007/2008 all
major distributions and tools handle this just fine.
If you are using a new kernel on an older distribution, or use
older userspace tools, you might need to say Y here. Do not say Y,
if the original kernel, that came with your distribution, has
this option set to N.
Recent distributions and userspace tools after 2009/2010 depend on
the existence of /sys/class/block/, and will not work with this
option enabled.
Only if you are using a new kernel on an old distribution, you might
need to say Y here.
config SYSFS_DEPRECATED_V2
bool "enabled deprecated sysfs features by default"
default n
depends on SYSFS
depends on SYSFS_DEPRECATED
help
Enable deprecated sysfs by default.
See the CONFIG_SYSFS_DEPRECATED option for more details about this
option.
Only if you are using a new kernel on an old distribution, you might
need to say Y here. Even then, odds are you would not need it
enabled, you can always pass the boot option if absolutely necessary.
config RELAY
bool "Kernel->user space relay support (formerly relayfs)"