1config PSTORE
2	tristate "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
17config 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
24config PSTORE_PMSG
25	bool "Log user space messages"
26	depends on PSTORE
27	help
28	  When the option is enabled, pstore will export a character
29	  interface /dev/pmsg0 to log user space messages. On reboot
30	  data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID].
31
32	  If unsure, say N.
33
34config PSTORE_FTRACE
35	bool "Persistent function tracer"
36	depends on PSTORE
37	depends on FUNCTION_TRACER
38	depends on DEBUG_FS
39	help
40	  With this option kernel traces function calls into a persistent
41	  ram buffer that can be decoded and dumped after reboot through
42	  pstore filesystem. It can be used to determine what function
43	  was last called before a reset or panic.
44
45	  If unsure, say N.
46
47config PSTORE_RAM
48	tristate "Log panic/oops to a RAM buffer"
49	depends on PSTORE
50	depends on HAS_IOMEM
51	depends on HAVE_MEMBLOCK
52	select REED_SOLOMON
53	select REED_SOLOMON_ENC8
54	select REED_SOLOMON_DEC8
55	help
56	  This enables panic and oops messages to be logged to a circular
57	  buffer in RAM where it can be read back at some later point.
58
59	  Note that for historical reasons, the module will be named
60	  "ramoops.ko".
61
62	  For more information, see Documentation/ramoops.txt.
63