fs/pstore/Kconfig

   1 config PSTORE
   2         bool "Persistent store support"
   3         default n
   4         help
   5            This option enables generic access to platform level
   6            persistent storage via "pstore" filesystem that can
   7            be mounted as /dev/pstore.  Only useful if you have
   8            a platform level driver that registers with pstore to
   9            provide the data, so you probably should just go say "Y"
  10            (or "M") to a platform specific persistent store driver
  11            (e.g. ACPI_APEI on X86) which will select this for you.
  12            If you don't have a platform persistent store driver,
  13            say N.
  14
  15 config PSTORE_CONSOLE
  16         bool "Log kernel console messages"
  17         depends on PSTORE
  18         help
  19           When the option is enabled, pstore will log all kernel
  20           messages, even if no oops or panic happened.
  21
  22 config PSTORE_FTRACE
  23         bool "Persistent function tracer"
  24         depends on PSTORE
  25         depends on FUNCTION_TRACER
  26         depends on DEBUG_FS
  27         help
  28           With this option kernel traces function calls into a persistent
  29           ram buffer that can be decoded and dumped after reboot through
  30           pstore filesystem. It can be used to determine what function
  31           was last called before a reset or panic.
  32
  33           If unsure, say N.
  34
  35 config PSTORE_RAM
  36         tristate "Log panic/oops to a RAM buffer"
  37         depends on PSTORE
  38         depends on HAS_IOMEM
  39         depends on HAVE_MEMBLOCK
  40         select REED_SOLOMON
  41         select REED_SOLOMON_ENC8
  42         select REED_SOLOMON_DEC8
  43         help
  44           This enables panic and oops messages to be logged to a circular
  45           buffer in RAM where it can be read back at some later point.
  46
  47           Note that for historical reasons, the module will be named
  48           "ramoops.ko".
  49
  50           For more information, see Documentation/ramoops.txt.