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Kconfig

Kconfig 1.9 KB
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  1. config PSTORE
    2. 

  2. 	tristate "Persistent store support"
    3. 

  3. 	default n
    4. 

  4. 	select ZLIB_DEFLATE
    5. 

  5. 	select ZLIB_INFLATE
    6. 

  6. 	help
    7. 

  7. 	   This option enables generic access to platform level
    8. 

  8. 	   persistent storage via "pstore" filesystem that can
    9. 

  9. 	   be mounted as /dev/pstore.  Only useful if you have
    10. 

  10. 	   a platform level driver that registers with pstore to
    11. 

  11. 	   provide the data, so you probably should just go say "Y"
    12. 

  12. 	   (or "M") to a platform specific persistent store driver
    13. 

  13. 	   (e.g. ACPI_APEI on X86) which will select this for you.
    14. 

  14. 	   If you don't have a platform persistent store driver,
    15. 

  15. 	   say N.
    16. 

  16. 

  17. config PSTORE_CONSOLE
    18. 

  18. 	bool "Log kernel console messages"
    19. 

  19. 	depends on PSTORE
    20. 

  20. 	help
    21. 

  21. 	  When the option is enabled, pstore will log all kernel
    22. 

  22. 	  messages, even if no oops or panic happened.
    23. 

  23. 

  24. config PSTORE_PMSG
    25. 

  25. 	bool "Log user space messages"
    26. 

  26. 	depends on PSTORE
    27. 

  27. 	help
    28. 

  28. 	  When the option is enabled, pstore will export a character
    29. 

  29. 	  interface /dev/pmsg0 to log user space messages. On reboot
    30. 

  30. 	  data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID].
    31. 

  31. 

  32. 	  If unsure, say N.
    33. 

  33. 

  34. config PSTORE_FTRACE
    35. 

  35. 	bool "Persistent function tracer"
    36. 

  36. 	depends on PSTORE
    37. 

  37. 	depends on FUNCTION_TRACER
    38. 

  38. 	depends on DEBUG_FS
    39. 

  39. 	help
    40. 

  40. 	  With this option kernel traces function calls into a persistent
    41. 

  41. 	  ram buffer that can be decoded and dumped after reboot through
    42. 

  42. 	  pstore filesystem. It can be used to determine what function
    43. 

  43. 	  was last called before a reset or panic.
    44. 

  44. 

  45. 	  If unsure, say N.
    46. 

  46. 

  47. config PSTORE_RAM
    48. 

  48. 	tristate "Log panic/oops to a RAM buffer"
    49. 

  49. 	depends on PSTORE
    50. 

  50. 	depends on HAS_IOMEM
    51. 

  51. 	depends on HAVE_MEMBLOCK
    52. 

  52. 	select REED_SOLOMON
    53. 

  53. 	select REED_SOLOMON_ENC8
    54. 

  54. 	select REED_SOLOMON_DEC8
    55. 

  55. 	help
    56. 

  56. 	  This enables panic and oops messages to be logged to a circular
    57. 

  57. 	  buffer in RAM where it can be read back at some later point.
    58. 

  58. 

  59. 	  Note that for historical reasons, the module will be named
    60. 

  60. 	  "ramoops.ko".
    61. 

  61. 

  62. 	  For more information, see Documentation/ramoops.txt.
    63.