diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 9fee969dd60..ce697e0b319 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -637,6 +637,28 @@ config BACKTRACE_SELF_TEST Say N if you are unsure. +config DEBUG_BLOCK_EXT_DEVT + bool "Force extended block device numbers and spread them" + depends on DEBUG_KERNEL + depends on BLOCK + default n + help + Conventionally, block device numbers are allocated from + predetermined contiguous area. However, extended block area + may introduce non-contiguous block device numbers. This + option forces most block device numbers to be allocated from + the extended space and spreads them to discover kernel or + userland code paths which assume predetermined contiguous + device number allocation. + + Note that turning on this debug option shuffles all the + device numbers for all IDE and SCSI devices including libata + ones, so root partition specified using device number + directly (via rdev or root=MAJ:MIN) won't work anymore. + Textual device names (root=/dev/sdXn) will continue to work. + + Say N if you are unsure. + config LKDTM tristate "Linux Kernel Dump Test Tool Module" depends on DEBUG_KERNEL @@ -674,10 +696,21 @@ config FAIL_PAGE_ALLOC config FAIL_MAKE_REQUEST bool "Fault-injection capability for disk IO" - depends on FAULT_INJECTION + depends on FAULT_INJECTION && BLOCK help Provide fault-injection capability for disk IO. +config FAIL_IO_TIMEOUT + bool "Faul-injection capability for faking disk interrupts" + depends on FAULT_INJECTION && BLOCK + help + Provide fault-injection capability on end IO handling. This + will make the block layer "forget" an interrupt as configured, + thus exercising the error handling. + + Only works with drivers that use the generic timeout handling, + for others it wont do anything. + config FAULT_INJECTION_DEBUG_FS bool "Debugfs entries for fault-injection capabilities" depends on FAULT_INJECTION && SYSFS && DEBUG_FS |