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- config PSTORE
- tristate "Persistent store support"
- default n
- help
- This option enables generic access to platform level
- persistent storage via "pstore" filesystem that can
- be mounted as /dev/pstore. Only useful if you have
- a platform level driver that registers with pstore to
- provide the data, so you probably should just go say "Y"
- (or "M") to a platform specific persistent store driver
- (e.g. ACPI_APEI on X86) which will select this for you.
- If you don't have a platform persistent store driver,
- say N.
- choice
- prompt "Choose compression algorithm"
- depends on PSTORE
- default PSTORE_ZLIB_COMPRESS
- help
- This option chooses compression algorithm.
- config PSTORE_ZLIB_COMPRESS
- bool "ZLIB"
- select ZLIB_DEFLATE
- select ZLIB_INFLATE
- help
- This option enables ZLIB compression algorithm support.
- config PSTORE_LZO_COMPRESS
- bool "LZO"
- select LZO_COMPRESS
- select LZO_DECOMPRESS
- help
- This option enables LZO compression algorithm support.
- config PSTORE_LZ4_COMPRESS
- bool "LZ4"
- select LZ4_COMPRESS
- select LZ4_DECOMPRESS
- help
- This option enables LZ4 compression algorithm support.
- endchoice
- config PSTORE_CONSOLE
- bool "Log kernel console messages"
- depends on PSTORE
- help
- When the option is enabled, pstore will log all kernel
- messages, even if no oops or panic happened.
- config PSTORE_PMSG
- bool "Log user space messages"
- depends on PSTORE
- help
- When the option is enabled, pstore will export a character
- interface /dev/pmsg0 to log user space messages. On reboot
- data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID].
- If unsure, say N.
- config PSTORE_FTRACE
- bool "Persistent function tracer"
- depends on PSTORE
- depends on FUNCTION_TRACER
- depends on DEBUG_FS
- help
- With this option kernel traces function calls into a persistent
- ram buffer that can be decoded and dumped after reboot through
- pstore filesystem. It can be used to determine what function
- was last called before a reset or panic.
- If unsure, say N.
- config PSTORE_RAM
- tristate "Log panic/oops to a RAM buffer"
- depends on PSTORE
- depends on HAS_IOMEM
- depends on HAVE_MEMBLOCK
- select REED_SOLOMON
- select REED_SOLOMON_ENC8
- select REED_SOLOMON_DEC8
- help
- This enables panic and oops messages to be logged to a circular
- buffer in RAM where it can be read back at some later point.
- Note that for historical reasons, the module will be named
- "ramoops.ko".
- For more information, see Documentation/ramoops.txt.
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