projects / people / arne_f / kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| ca01d6dd | 1 | config PSTORE |
| ee1d2674 | 2 | tristate "Persistent store support" |
| ca01d6dd TL |
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. | |
| 1894a253 | 14 | |
| 8cfc8ddc GT |
15 | choice |
| 16 | prompt "Choose compression algorithm" | |
| 17 | depends on PSTORE | |
| 18 | default PSTORE_ZLIB_COMPRESS | |
| 19 | help | |
| 20 | This option chooses compression algorithm. | |
| 21 | ||
| 22 | config PSTORE_ZLIB_COMPRESS | |
| 23 | bool "ZLIB" | |
| 24 | select ZLIB_DEFLATE | |
| 25 | select ZLIB_INFLATE | |
| 26 | help | |
| 27 | This option enables ZLIB compression algorithm support. | |
| 28 | ||
| 29 | config PSTORE_LZO_COMPRESS | |
| 30 | bool "LZO" | |
| 31 | select LZO_COMPRESS | |
| 32 | select LZO_DECOMPRESS | |
| 33 | help | |
| 34 | This option enables LZO compression algorithm support. | |
| 35 | ||
| 36 | config PSTORE_LZ4_COMPRESS | |
| 37 | bool "LZ4" | |
| 38 | select LZ4_COMPRESS | |
| 39 | select LZ4_DECOMPRESS | |
| 40 | help | |
| 41 | This option enables LZ4 compression algorithm support. | |
| 42 | endchoice | |
| 43 | ||
| f29e5956 AV |
44 | config PSTORE_CONSOLE |
| 45 | bool "Log kernel console messages" | |
| 46 | depends on PSTORE | |
| 47 | help | |
| 48 | When the option is enabled, pstore will log all kernel | |
| 49 | messages, even if no oops or panic happened. | |
| 50 | ||
| 9d5438f4 MS |
51 | config PSTORE_PMSG |
| 52 | bool "Log user space messages" | |
| 53 | depends on PSTORE | |
| 54 | help | |
| 55 | When the option is enabled, pstore will export a character | |
| 56 | interface /dev/pmsg0 to log user space messages. On reboot | |
| 57 | data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID]. | |
| 58 | ||
| 59 | If unsure, say N. | |
| 60 | ||
| 060287b8 AV |
61 | config PSTORE_FTRACE |
| 62 | bool "Persistent function tracer" | |
| 63 | depends on PSTORE | |
| 64 | depends on FUNCTION_TRACER | |
| 65f8c95e | 65 | depends on DEBUG_FS |
| 060287b8 AV |
66 | help |
| 67 | With this option kernel traces function calls into a persistent | |
| 68 | ram buffer that can be decoded and dumped after reboot through | |
| 69 | pstore filesystem. It can be used to determine what function | |
| 70 | was last called before a reset or panic. | |
| 71 | ||
| 72 | If unsure, say N. | |
| 73 | ||
| 1894a253 AV |
74 | config PSTORE_RAM |
| 75 | tristate "Log panic/oops to a RAM buffer" | |
| 1894a253 | 76 | depends on PSTORE |
| cddb8751 AV |
77 | depends on HAS_IOMEM |
| 78 | depends on HAVE_MEMBLOCK | |
| 79 | select REED_SOLOMON | |
| 80 | select REED_SOLOMON_ENC8 | |
| 81 | select REED_SOLOMON_DEC8 | |
| 1894a253 AV |
82 | help |
| 83 | This enables panic and oops messages to be logged to a circular | |
| 84 | buffer in RAM where it can be read back at some later point. | |
| 85 | ||
| 86 | Note that for historical reasons, the module will be named | |
| 87 | "ramoops.ko". | |
| 88 | ||
| 8c27ceff | 89 | For more information, see Documentation/admin-guide/ramoops.rst. |