User:ZyMOS/Howto configure the linux kernel/drivers/s390/block

User:ZyMOS/Howto configure the linux kernel / drivers / s390 / block

ARCH_S390

"S/390 block device drivers"
 * depends on ARCH_S390


 * Option: BLK_DEV_XPRAM
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "XPRAM disk support"
 * depends on ARCH_S390
 * Select this option if you want to use your expanded storage on S/390 or zSeries as a disk. This is useful as a _fast_ swap device if you want to access more than 2G of memory when running in 31 bit mode. This option is also available as a module which will be called xpram.  If unsure, say "N".


 * Option: DCSSBLK
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "DCSSBLK support"
 * Support for dcss block device


 * Option: DASD
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "Support for DASD devices"
 * depends on CCW
 * Enable this option if you want to access DASDs directly utilizing S/390s channel subsystem commands. This is necessary for running natively on a single image or an LPAR.


 * Option: DASD_PROFILE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) "Profiling support for dasd devices"
 * depends on DASD
 * Enable this option if you want to see profiling information        in /proc/dasd/statistics.


 * Option: DASD_ECKD
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "Support for ECKD Disks"
 * depends on DASD
 * ECKD devices are the most commonly used devices. You should enable this option unless you are very sure to have no ECKD device.


 * Option: DASD_FBA
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "Support for FBA  Disks"
 * depends on DASD
 * Select this option to be able to access FBA devices. It is safe to say "Y".


 * Option: DASD_DIAG
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "Support for DIAG access to Disks"
 * depends on DASD && ( ARCH_S390X = 'n' || EXPERIMENTAL)
 * Select this option if you want to use Diagnose250 command to access Disks under VM. If you are not running under VM or unsure what it is, say "N".


 * Option: DASD_CMB
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) "Compatibility interface for DASD channel measurement blocks"
 * depends on DASD
 * This driver provides an additional interface to the channel measurement facility, which is normally accessed though sysfs, with a set of ioctl functions specific to the dasd driver. This is only needed if you want to use applications written for linux-2.4 dasd channel measurement facility interface.