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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /fs/pstore/Kconfig
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+config PSTORE
+ bool "Persistent store support"
+ default n
+ select ZLIB_DEFLATE
+ select ZLIB_INFLATE
+ 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.
+
+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.