| Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 1 | # |
| 2 | # Block layer core configuration |
| 3 | # |
| David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 4 | config BLOCK |
| Jens Axboe | 51d7513 | 2006-09-30 21:14:05 +0200 | [diff] [blame^] | 5 | bool "Enable the block layer" if EMBEDDED |
| David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 6 | default y |
| 7 | help |
| 8 | This permits the block layer to be removed from the kernel if it's not |
| 9 | needed (on some embedded devices for example). If this option is |
| 10 | disabled, then blockdev files will become unusable and some |
| 11 | filesystems (such as ext3) will become unavailable. |
| 12 | |
| 13 | This option will also disable SCSI character devices and USB storage |
| 14 | since they make use of various block layer definitions and |
| 15 | facilities. |
| 16 | |
| 17 | Say Y here unless you know you really don't want to mount disks and |
| 18 | suchlike. |
| 19 | |
| 20 | if BLOCK |
| 21 | |
| Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 22 | #XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64 |
| 23 | #for instance. |
| 24 | config LBD |
| 25 | bool "Support for Large Block Devices" |
| Martin Schwidefsky | 347a8dc | 2006-01-06 00:19:28 -0800 | [diff] [blame] | 26 | depends on X86 || (MIPS && 32BIT) || PPC32 || (S390 && !64BIT) || SUPERH || UML |
| Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 27 | help |
| 28 | Say Y here if you want to attach large (bigger than 2TB) discs to |
| 29 | your machine, or if you want to have a raid or loopback device |
| 30 | bigger than 2TB. Otherwise say N. |
| 31 | |
| Jens Axboe | 2056a78 | 2006-03-23 20:00:26 +0100 | [diff] [blame] | 32 | config BLK_DEV_IO_TRACE |
| 33 | bool "Support for tracing block io actions" |
| Jens Axboe | 09540e6 | 2006-03-26 14:32:09 +0200 | [diff] [blame] | 34 | depends on SYSFS |
| Jens Axboe | 2056a78 | 2006-03-23 20:00:26 +0100 | [diff] [blame] | 35 | select RELAY |
| 36 | select DEBUG_FS |
| 37 | help |
| 38 | Say Y here, if you want to be able to trace the block layer actions |
| 39 | on a given queue. Tracing allows you to see any traffic happening |
| 40 | on a block device queue. For more information (and the user space |
| 41 | support tools needed), fetch the blktrace app from: |
| 42 | |
| 43 | git://brick.kernel.dk/data/git/blktrace.git |
| 44 | |
| Takashi Sato | a0f62ac | 2006-03-26 01:37:52 -0800 | [diff] [blame] | 45 | config LSF |
| 46 | bool "Support for Large Single Files" |
| 47 | depends on X86 || (MIPS && 32BIT) || PPC32 || ARCH_S390_31 || SUPERH || UML |
| Takashi Sato | a0f62ac | 2006-03-26 01:37:52 -0800 | [diff] [blame] | 48 | help |
| Trond Myklebust | 88b9adb | 2006-03-31 02:30:46 -0800 | [diff] [blame] | 49 | Say Y here if you want to be able to handle very large files (bigger |
| 50 | than 2TB), otherwise say N. |
| 51 | |
| 52 | If unsure, say Y. |
| Takashi Sato | a0f62ac | 2006-03-26 01:37:52 -0800 | [diff] [blame] | 53 | |
| David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 54 | endif |
| 55 | |
| Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 56 | source block/Kconfig.iosched |