|  | comment "UBI debugging options" | 
|  | depends on MTD_UBI | 
|  |  | 
|  | config MTD_UBI_DEBUG | 
|  | bool "UBI debugging" | 
|  | depends on SYSFS | 
|  | depends on MTD_UBI | 
|  | select DEBUG_FS | 
|  | select KALLSYMS_ALL | 
|  | help | 
|  | This option enables UBI debugging. | 
|  |  | 
|  | config MTD_UBI_DEBUG_MSG | 
|  | bool "UBI debugging messages" | 
|  | depends on MTD_UBI_DEBUG | 
|  | default n | 
|  | help | 
|  | This option enables UBI debugging messages. | 
|  |  | 
|  | config MTD_UBI_DEBUG_PARANOID | 
|  | bool "Extra self-checks" | 
|  | default n | 
|  | depends on MTD_UBI_DEBUG | 
|  | help | 
|  | This option enables extra checks in UBI code. Note this slows UBI down | 
|  | significantly. | 
|  |  | 
|  | config MTD_UBI_DEBUG_DISABLE_BGT | 
|  | bool "Do not enable the UBI background thread" | 
|  | depends on MTD_UBI_DEBUG | 
|  | default n | 
|  | help | 
|  | This option switches the background thread off by default. The thread | 
|  | may be also be enabled/disabled via UBI sysfs. | 
|  |  | 
|  | config MTD_UBI_DEBUG_USERSPACE_IO | 
|  | bool "Direct user-space write/erase support" | 
|  | default n | 
|  | depends on MTD_UBI_DEBUG | 
|  | help | 
|  | By default, users cannot directly write and erase individual | 
|  | eraseblocks of dynamic volumes, and have to use update operation | 
|  | instead. This option enables this capability - it is very useful for | 
|  | debugging and testing. | 
|  |  | 
|  | config MTD_UBI_DEBUG_EMULATE_BITFLIPS | 
|  | bool "Emulate flash bit-flips" | 
|  | depends on MTD_UBI_DEBUG | 
|  | default n | 
|  | help | 
|  | This option emulates bit-flips with probability 1/50, which in turn | 
|  | causes scrubbing. Useful for debugging and stressing UBI. | 
|  |  | 
|  | config MTD_UBI_DEBUG_EMULATE_WRITE_FAILURES | 
|  | bool "Emulate flash write failures" | 
|  | depends on MTD_UBI_DEBUG | 
|  | default n | 
|  | help | 
|  | This option emulates write failures with probability 1/100. Useful for | 
|  | debugging and testing how UBI handlines errors. | 
|  |  | 
|  | config MTD_UBI_DEBUG_EMULATE_ERASE_FAILURES | 
|  | bool "Emulate flash erase failures" | 
|  | depends on MTD_UBI_DEBUG | 
|  | default n | 
|  | help | 
|  | This option emulates erase failures with probability 1/100. Useful for | 
|  | debugging and testing how UBI handlines errors. | 
|  |  | 
|  | menu "Additional UBI debugging messages" | 
|  | depends on MTD_UBI_DEBUG | 
|  |  | 
|  | config MTD_UBI_DEBUG_MSG_BLD | 
|  | bool "Additional UBI initialization and build messages" | 
|  | default n | 
|  | depends on MTD_UBI_DEBUG | 
|  | help | 
|  | This option enables detailed UBI initialization and device build | 
|  | debugging messages. | 
|  |  | 
|  | config MTD_UBI_DEBUG_MSG_EBA | 
|  | bool "Eraseblock association unit messages" | 
|  | default n | 
|  | depends on MTD_UBI_DEBUG | 
|  | help | 
|  | This option enables debugging messages from the UBI eraseblock | 
|  | association unit. | 
|  |  | 
|  | config MTD_UBI_DEBUG_MSG_WL | 
|  | bool "Wear-leveling unit messages" | 
|  | default n | 
|  | depends on MTD_UBI_DEBUG | 
|  | help | 
|  | This option enables debugging messages from the UBI wear-leveling | 
|  | unit. | 
|  |  | 
|  | config MTD_UBI_DEBUG_MSG_IO | 
|  | bool "Input/output unit messages" | 
|  | default n | 
|  | depends on MTD_UBI_DEBUG | 
|  | help | 
|  | This option enables debugging messages from the UBI input/output unit. | 
|  |  | 
|  | endmenu # UBI debugging messages |