1# 2# Block layer core configuration 3# 4#XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64 5#for instance. 6config LBD 7 bool "Support for Large Block Devices" 8 depends on X86 || (MIPS && 32BIT) || PPC32 || (S390 && !64BIT) || SUPERH || UML 9 help 10 Say Y here if you want to attach large (bigger than 2TB) discs to 11 your machine, or if you want to have a raid or loopback device 12 bigger than 2TB. Otherwise say N. 13 14config BLK_DEV_IO_TRACE 15 bool "Support for tracing block io actions" 16 select RELAY 17 select DEBUG_FS 18 help 19 Say Y here, if you want to be able to trace the block layer actions 20 on a given queue. Tracing allows you to see any traffic happening 21 on a block device queue. For more information (and the user space 22 support tools needed), fetch the blktrace app from: 23 24 git://brick.kernel.dk/data/git/blktrace.git 25 26source block/Kconfig.iosched 27