Eric Lee / smarc-fsl-linux-kernel

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81f7e3824   Eric Lee   Initial Release, ... 
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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/admin-guide/ramoops.rst.