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.