Kconfig 1.5 KB

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  1. #
  2. # Block layer core configuration
  3. #
  4. config BLOCK
  5. bool "Enable the block layer" if EMBEDDED
  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. This option will also disable SCSI character devices and USB storage
  13. since they make use of various block layer definitions and
  14. facilities.
  15. Say Y here unless you know you really don't want to mount disks and
  16. suchlike.
  17. if BLOCK
  18. config LBD
  19. bool "Support for Large Block Devices"
  20. depends on !64BIT
  21. help
  22. Say Y here if you want to attach large (bigger than 2TB) discs to
  23. your machine, or if you want to have a raid or loopback device
  24. bigger than 2TB. Otherwise say N.
  25. config BLK_DEV_IO_TRACE
  26. bool "Support for tracing block io actions"
  27. depends on SYSFS
  28. select RELAY
  29. select DEBUG_FS
  30. help
  31. Say Y here, if you want to be able to trace the block layer actions
  32. on a given queue. Tracing allows you to see any traffic happening
  33. on a block device queue. For more information (and the user space
  34. support tools needed), fetch the blktrace app from:
  35. git://brick.kernel.dk/data/git/blktrace.git
  36. config LSF
  37. bool "Support for Large Single Files"
  38. depends on !64BIT
  39. help
  40. Say Y here if you want to be able to handle very large files (bigger
  41. than 2TB), otherwise say N.
  42. If unsure, say Y.
  43. endif
  44. source block/Kconfig.iosched