fs/pstore/Kconfig

   1 config PSTORE
   2         bool "Persistent store support"
   3         default n
   4         select ZLIB_DEFLATE
   5         select ZLIB_INFLATE
   6         help
   7            This option enables generic access to platform level
   8            persistent storage via "pstore" filesystem that can
   9            be mounted as /dev/pstore.  Only useful if you have
  10            a platform level driver that registers with pstore to
  11            provide the data, so you probably should just go say "Y"
  12            (or "M") to a platform specific persistent store driver
  13            (e.g. ACPI_APEI on X86) which will select this for you.
  14            If you don't have a platform persistent store driver,
  15            say N.
  16
  17 config PSTORE_CONSOLE
  18         bool "Log kernel console messages"
  19         depends on PSTORE
  20         help
  21           When the option is enabled, pstore will log all kernel
  22           messages, even if no oops or panic happened.
  23
  24 config PSTORE_FTRACE
  25         bool "Persistent function tracer"
  26         depends on PSTORE
  27         depends on FUNCTION_TRACER
  28         depends on DEBUG_FS
  29         help
  30           With this option kernel traces function calls into a persistent
  31           ram buffer that can be decoded and dumped after reboot through
  32           pstore filesystem. It can be used to determine what function
  33           was last called before a reset or panic.
  34
  35           If unsure, say N.
  36
  37 config PSTORE_RAM
  38         tristate "Log panic/oops to a RAM buffer"
  39         depends on PSTORE
  40         depends on HAS_IOMEM
  41         depends on HAVE_MEMBLOCK
  42         select REED_SOLOMON
  43         select REED_SOLOMON_ENC8
  44         select REED_SOLOMON_DEC8
  45         help
  46           This enables panic and oops messages to be logged to a circular
  47           buffer in RAM where it can be read back at some later point.
  48
  49           Note that for historical reasons, the module will be named
  50           "ramoops.ko".
  51
  52           For more information, see Documentation/ramoops.txt.