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Commit 72148aec authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: make scsi_request and scsi ioctl support optional 



We only need this code to support scsi, ide, cciss and virtio.  And at
least for virtio it's a deprecated feature to start with.

This should shrink the kernel size for embedded device that only use,
say eMMC a bit.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 3719fa86

block/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -49,9 +49,13 @@ config LBDAF 


	  If unsure, say Y.



config BLK_SCSI_REQUEST

	bool



config BLK_DEV_BSG

	bool "Block layer SG support v4"

	default y

	select BLK_SCSI_REQUEST

	help

	  Saying Y here will enable generic SG (SCSI generic) v4 support

	  for any block device.
@@ -71,6 +75,7 @@ config BLK_DEV_BSGLIB 
	bool "Block layer SG support v4 helper lib"

	default n

	select BLK_DEV_BSG

	select BLK_SCSI_REQUEST

	help

	  Subsystems will normally enable this if needed. Users will not

	  normally need to manually enable this.

block/Makefile

+3 −2
Original line number Diff line number Diff line
@@ -7,10 +7,11 @@ obj-$(CONFIG_BLOCK) := bio.o elevator.o blk-core.o blk-tag.o blk-sysfs.o \ 
			blk-exec.o blk-merge.o blk-softirq.o blk-timeout.o \

			blk-lib.o blk-mq.o blk-mq-tag.o blk-stat.o \

			blk-mq-sysfs.o blk-mq-cpumap.o blk-mq-sched.o ioctl.o \

			genhd.o scsi_ioctl.o partition-generic.o ioprio.o \

			genhd.o partition-generic.o ioprio.o \

			badblocks.o partitions/



obj-$(CONFIG_BOUNCE)		+= bounce.o

obj-$(CONFIG_BLK_SCSI_REQUEST)	+= scsi_ioctl.o

obj-$(CONFIG_BLK_DEV_BSG)	+= bsg.o

obj-$(CONFIG_BLK_DEV_BSGLIB)	+= bsg-lib.o

obj-$(CONFIG_BLK_CGROUP)	+= blk-cgroup.o

drivers/block/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ config AMIGA_Z2RAM 
config GDROM

	tristate "SEGA Dreamcast GD-ROM drive"

	depends on SH_DREAMCAST

	select BLK_SCSI_REQUEST # only for the generic cdrom code

	help

	  A standard SEGA Dreamcast comes with a modified CD ROM drive called a

	  "GD-ROM" by SEGA to signify it is capable of reading special disks
@@ -114,6 +115,7 @@ config BLK_CPQ_CISS_DA 
	tristate "Compaq Smart Array 5xxx support"

	depends on PCI

	select CHECK_SIGNATURE

	select BLK_SCSI_REQUEST

	help

	  This is the driver for Compaq Smart Array 5xxx controllers.

	  Everyone using these boards should say Y here.
@@ -386,6 +388,7 @@ config BLK_DEV_RAM_DAX 
config CDROM_PKTCDVD

	tristate "Packet writing on CD/DVD media (DEPRECATED)"

	depends on !UML

	select BLK_SCSI_REQUEST

	help

	  Note: This driver is deprecated and will be removed from the

	  kernel in the near future!
@@ -497,6 +500,7 @@ config XEN_BLKDEV_BACKEND 
config VIRTIO_BLK

	tristate "Virtio block driver"

	depends on VIRTIO

	select BLK_SCSI_REQUEST

	---help---

	  This is the virtual block driver for virtio.  It can be used with

          lguest or QEMU based VMMs (like KVM or Xen).  Say Y or M.

drivers/block/paride/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ config PARIDE_PD 
config PARIDE_PCD

	tristate "Parallel port ATAPI CD-ROMs"

	depends on PARIDE

	select BLK_SCSI_REQUEST # only for the generic cdrom code

	---help---

	  This option enables the high-level driver for ATAPI CD-ROM devices

	  connected through a parallel port. If you chose to build PARIDE

drivers/ide/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ menuconfig IDE 
	tristate "ATA/ATAPI/MFM/RLL support (DEPRECATED)"

	depends on HAVE_IDE

	depends on BLOCK

	select BLK_SCSI_REQUEST

	---help---

	  If you say Y here, your kernel will be able to manage ATA/(E)IDE and

	  ATAPI units. The most common cases are IDE hard drives and ATAPI