config [31mCONFIG_PSTORE[0m 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. [31mCONFIG_ACPI_APEI[0m on [31mCONFIG_X86[0m) 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 [31mCONFIG_PSTORE[0m default [31mCONFIG_PSTORE_ZLIB_COMPRESS[0m help This option chooses compression algorithm. config [31mCONFIG_PSTORE_ZLIB_COMPRESS[0m bool "ZLIB" select [31mCONFIG_ZLIB_DEFLATE[0m select [31mCONFIG_ZLIB_INFLATE[0m help This option enables ZLIB compression algorithm support. config [31mCONFIG_PSTORE_LZO_COMPRESS[0m bool "LZO" select [31mCONFIG_LZO_COMPRESS[0m select [31mCONFIG_LZO_DECOMPRESS[0m help This option enables LZO compression algorithm support. config [31mCONFIG_PSTORE_LZ4_COMPRESS[0m bool "LZ4" select [31mCONFIG_LZ4_COMPRESS[0m select [31mCONFIG_LZ4_DECOMPRESS[0m help This option enables LZ4 compression algorithm support. endchoice config [31mCONFIG_PSTORE_CONSOLE[0m bool "Log kernel console messages" depends on [31mCONFIG_PSTORE[0m help When the option is enabled, pstore will log all kernel messages, even if no oops or panic happened. config [31mCONFIG_PSTORE_PMSG[0m bool "Log user space messages" depends on [31mCONFIG_PSTORE[0m 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 [31mCONFIG_PSTORE_FTRACE[0m bool "Persistent function tracer" depends on [31mCONFIG_PSTORE[0m depends on [31mCONFIG_FUNCTION_TRACER[0m depends on [31mCONFIG_DEBUG_FS[0m 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 [31mCONFIG_PSTORE_RAM[0m tristate "Log panic/oops to a RAM buffer" depends on [31mCONFIG_PSTORE[0m depends on [31mCONFIG_HAS_IOMEM[0m depends on [31mCONFIG_HAVE_MEMBLOCK[0m select [31mCONFIG_REED_SOLOMON[0m select [31mCONFIG_REED_SOLOMON_ENC8[0m select [31mCONFIG_REED_SOLOMON_DEC8[0m 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. |