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Linux/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.

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