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Linux/drivers/s390/block/Kconfig

  1 comment "S/390 block device drivers"
  2         depends on S390 && BLOCK
  3 
  4 config BLK_DEV_XPRAM
  5         def_tristate m
  6         prompt "XPRAM disk support"
  7         depends on S390 && BLOCK
  8         help
  9           Select this option if you want to use your expanded storage on S/390
 10           or zSeries as a disk.  This is useful as a _fast_ swap device if you
 11           want to access more than 2G of memory when running in 31 bit mode.
 12           This option is also available as a module which will be called
 13           xpram.  If unsure, say "N".
 14 
 15 config DCSSBLK
 16         def_tristate m
 17         prompt "DCSSBLK support"
 18         depends on S390 && BLOCK
 19         help
 20           Support for dcss block device
 21 
 22 config DASD
 23         def_tristate y
 24         prompt "Support for DASD devices"
 25         depends on CCW && BLOCK
 26         select IOSCHED_DEADLINE
 27         help
 28           Enable this option if you want to access DASDs directly utilizing
 29           S/390s channel subsystem commands. This is necessary for running
 30           natively on a single image or an LPAR.
 31 
 32 config DASD_PROFILE
 33         def_bool y
 34         prompt "Profiling support for dasd devices"
 35         depends on DASD
 36         help
 37           Enable this option if you want to see profiling information
 38           in /proc/dasd/statistics.
 39 
 40 config DASD_ECKD
 41         def_tristate y
 42         prompt "Support for ECKD Disks"
 43         depends on DASD
 44         help
 45           ECKD devices are the most commonly used devices. You should enable
 46           this option unless you are very sure to have no ECKD device.
 47 
 48 config DASD_FBA
 49         def_tristate y
 50         prompt "Support for FBA  Disks"
 51         depends on DASD
 52         help
 53           Select this option to be able to access FBA devices. It is safe to
 54           say "Y".
 55 
 56 config DASD_DIAG
 57         def_tristate y
 58         prompt "Support for DIAG access to Disks"
 59         depends on DASD
 60         help
 61           Select this option if you want to use Diagnose250 command to access
 62           Disks under VM.  If you are not running under VM or unsure what it is,
 63           say "N".
 64 
 65 config DASD_EER
 66         def_bool y
 67         prompt "Extended error reporting (EER)"
 68         depends on DASD
 69         help
 70           This driver provides a character device interface to the
 71           DASD extended error reporting. This is only needed if you want to
 72           use applications written for the EER facility.
 73 
 74 config SCM_BLOCK
 75         def_tristate m
 76         prompt "Support for Storage Class Memory"
 77         depends on S390 && BLOCK && EADM_SCH && SCM_BUS
 78         help
 79           Block device driver for Storage Class Memory (SCM). This driver
 80           provides a block device interface for each available SCM increment.
 81 
 82           To compile this driver as a module, choose M here: the
 83           module will be called scm_block.
 84 
 85 config SCM_BLOCK_CLUSTER_WRITE
 86         def_bool y
 87         prompt "SCM force cluster writes"
 88         depends on SCM_BLOCK
 89         help
 90           Force writes to Storage Class Memory (SCM) to be in done in clusters.

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