80ed71ce1a
This patch moves the bsg registration into SCSI so that bsg no longer has a dependency on the scsi_interface_register API. This can be viewed as a temporary expedient until we can get universal bsg binding sorted out properly. Also use the sdev bus_id as the generic bsg name (to avoid clashes with the queue name). Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
67 lines
2 KiB
Text
67 lines
2 KiB
Text
#
|
|
# Block layer core configuration
|
|
#
|
|
menuconfig BLOCK
|
|
bool "Enable the block layer" if EMBEDDED
|
|
default y
|
|
help
|
|
This permits the block layer to be removed from the kernel if it's not
|
|
needed (on some embedded devices for example). If this option is
|
|
disabled, then blockdev files will become unusable and some
|
|
filesystems (such as ext3) will become unavailable.
|
|
|
|
This option will also disable SCSI character devices and USB storage
|
|
since they make use of various block layer definitions and
|
|
facilities.
|
|
|
|
Say Y here unless you know you really don't want to mount disks and
|
|
suchlike.
|
|
|
|
if BLOCK
|
|
|
|
config LBD
|
|
bool "Support for Large Block Devices"
|
|
depends on !64BIT
|
|
help
|
|
Say Y here if you want to attach large (bigger than 2TB) discs to
|
|
your machine, or if you want to have a raid or loopback device
|
|
bigger than 2TB. Otherwise say N.
|
|
|
|
config BLK_DEV_IO_TRACE
|
|
bool "Support for tracing block io actions"
|
|
depends on SYSFS
|
|
select RELAY
|
|
select DEBUG_FS
|
|
help
|
|
Say Y here, if you want to be able to trace the block layer actions
|
|
on a given queue. Tracing allows you to see any traffic happening
|
|
on a block device queue. For more information (and the user space
|
|
support tools needed), fetch the blktrace app from:
|
|
|
|
git://brick.kernel.dk/data/git/blktrace.git
|
|
|
|
config LSF
|
|
bool "Support for Large Single Files"
|
|
depends on !64BIT
|
|
help
|
|
Say Y here if you want to be able to handle very large files (bigger
|
|
than 2TB), otherwise say N.
|
|
|
|
If unsure, say Y.
|
|
|
|
endif # BLOCK
|
|
|
|
config BLK_DEV_BSG
|
|
bool "Block layer SG support v4 (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL
|
|
---help---
|
|
Saying Y here will enable generic SG (SCSI generic) v4 support
|
|
for any block device.
|
|
|
|
Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4
|
|
can handle complicated SCSI commands: tagged variable length cdbs
|
|
with bidirectional data transfers and generic request/response
|
|
protocols (e.g. Task Management Functions and SMP in Serial
|
|
Attached SCSI).
|
|
|
|
source block/Kconfig.iosched
|