Blame - fs/pstore/Kconfig - kernel/msm-4.19

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Tony Luck	ca01d6d	2010-12-28 14:25:21 -0800	[diff] [blame]	1	config PSTORE
Geliang Tang	ee1d267	2015-10-20 00:39:03 -0700	[diff] [blame]	2	tristate "Persistent store support"
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	3	select CRYPTO if PSTORE_COMPRESS
Tony Luck	ca01d6d	2010-12-28 14:25:21 -0800	[diff] [blame]	4	default n
				5	help
				6	This option enables generic access to platform level
				7	persistent storage via "pstore" filesystem that can
				8	be mounted as /dev/pstore. Only useful if you have
				9	a platform level driver that registers with pstore to
				10	provide the data, so you probably should just go say "Y"
				11	(or "M") to a platform specific persistent store driver
				12	(e.g. ACPI_APEI on X86) which will select this for you.
				13	If you don't have a platform persistent store driver,
				14	say N.
Anton Vorontsov	1894a25	2012-05-16 05:43:08 -0700	[diff] [blame]	15
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	16	config PSTORE_DEFLATE_COMPRESS
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	17	tristate "DEFLATE (ZLIB) compression"
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	18	default y
				19	depends on PSTORE
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	20	select CRYPTO_DEFLATE
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	21	help
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	22	This option enables DEFLATE (also known as ZLIB) compression
				23	algorithm support.
Geliang Tang	8cfc8dd	2016-02-18 22:04:22 +0800	[diff] [blame]	24
				25	config PSTORE_LZO_COMPRESS
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	26	tristate "LZO compression"
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	27	depends on PSTORE
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	28	select CRYPTO_LZO
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	29	help
				30	This option enables LZO compression algorithm support.
Geliang Tang	8cfc8dd	2016-02-18 22:04:22 +0800	[diff] [blame]	31
				32	config PSTORE_LZ4_COMPRESS
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	33	tristate "LZ4 compression"
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	34	depends on PSTORE
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	35	select CRYPTO_LZ4
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	36	help
				37	This option enables LZ4 compression algorithm support.
Geliang Tang	239b716	2018-02-13 14:40:39 +0800	[diff] [blame]	38
				39	config PSTORE_LZ4HC_COMPRESS
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	40	tristate "LZ4HC compression"
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	41	depends on PSTORE
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	42	select CRYPTO_LZ4HC
Geliang Tang	239b716	2018-02-13 14:40:39 +0800	[diff] [blame]	43	help
				44	This option enables LZ4HC (high compression) mode algorithm.
				45
				46	config PSTORE_842_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	47	bool "842 compression"
				48	depends on PSTORE
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	49	select CRYPTO_842
Geliang Tang	239b716	2018-02-13 14:40:39 +0800	[diff] [blame]	50	help
				51	This option enables 842 compression algorithm support.
				52
Geliang Tang	1021bcf	2018-08-01 19:23:37 +0800	[diff] [blame]	53	config PSTORE_ZSTD_COMPRESS
				54	bool "zstd compression"
				55	depends on PSTORE
				56	select CRYPTO_ZSTD
				57	help
				58	This option enables zstd compression algorithm support.
				59
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	60	config PSTORE_COMPRESS
				61	def_bool y
				62	depends on PSTORE
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	63	depends on PSTORE_DEFLATE_COMPRESS \|\| PSTORE_LZO_COMPRESS \|\| \
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	64	PSTORE_LZ4_COMPRESS \|\| PSTORE_LZ4HC_COMPRESS \|\| \
Geliang Tang	1021bcf	2018-08-01 19:23:37 +0800	[diff] [blame]	65	PSTORE_842_COMPRESS \|\| PSTORE_ZSTD_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	66
				67	choice
				68	prompt "Default pstore compression algorithm"
				69	depends on PSTORE_COMPRESS
				70	help
				71	This option chooses the default active compression algorithm.
				72	This change be changed at boot with "pstore.compress=..." on
				73	the kernel command line.
				74
Geliang Tang	1021bcf	2018-08-01 19:23:37 +0800	[diff] [blame]	75	Currently, pstore has support for 6 compression algorithms:
				76	deflate, lzo, lz4, lz4hc, 842 and zstd.
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	77
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	78	The default compression algorithm is deflate.
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	79
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	80	config PSTORE_DEFLATE_COMPRESS_DEFAULT
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	81	bool "deflate" if PSTORE_DEFLATE_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	82
				83	config PSTORE_LZO_COMPRESS_DEFAULT
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	84	bool "lzo" if PSTORE_LZO_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	85
				86	config PSTORE_LZ4_COMPRESS_DEFAULT
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	87	bool "lz4" if PSTORE_LZ4_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	88
				89	config PSTORE_LZ4HC_COMPRESS_DEFAULT
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	90	bool "lz4hc" if PSTORE_LZ4HC_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	91
				92	config PSTORE_842_COMPRESS_DEFAULT
Arnd Bergmann	58eb5b67	2018-03-15 16:34:08 +0100	[diff] [blame]	93	bool "842" if PSTORE_842_COMPRESS
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	94
Geliang Tang	1021bcf	2018-08-01 19:23:37 +0800	[diff] [blame]	95	config PSTORE_ZSTD_COMPRESS_DEFAULT
				96	bool "zstd" if PSTORE_ZSTD_COMPRESS
				97
Geliang Tang	8cfc8dd	2016-02-18 22:04:22 +0800	[diff] [blame]	98	endchoice
				99
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	100	config PSTORE_COMPRESS_DEFAULT
				101	string
				102	depends on PSTORE_COMPRESS
Geliang Tang	cb3bee0	2018-03-09 18:51:07 +0800	[diff] [blame]	103	default "deflate" if PSTORE_DEFLATE_COMPRESS_DEFAULT
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	104	default "lzo" if PSTORE_LZO_COMPRESS_DEFAULT
				105	default "lz4" if PSTORE_LZ4_COMPRESS_DEFAULT
				106	default "lz4hc" if PSTORE_LZ4HC_COMPRESS_DEFAULT
				107	default "842" if PSTORE_842_COMPRESS_DEFAULT
Geliang Tang	1021bcf	2018-08-01 19:23:37 +0800	[diff] [blame]	108	default "zstd" if PSTORE_ZSTD_COMPRESS_DEFAULT
Kees Cook	fe1d475	2018-03-06 15:57:38 -0800	[diff] [blame]	109
Anton Vorontsov	f29e595	2012-05-26 06:20:19 -0700	[diff] [blame]	110	config PSTORE_CONSOLE
				111	bool "Log kernel console messages"
				112	depends on PSTORE
				113	help
				114	When the option is enabled, pstore will log all kernel
				115	messages, even if no oops or panic happened.
				116
Mark Salyzyn	9d5438f	2015-01-16 16:01:10 -0800	[diff] [blame]	117	config PSTORE_PMSG
				118	bool "Log user space messages"
				119	depends on PSTORE
				120	help
				121	When the option is enabled, pstore will export a character
				122	interface /dev/pmsg0 to log user space messages. On reboot
				123	data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID].
				124
				125	If unsure, say N.
				126
Anton Vorontsov	060287b	2012-07-09 17:10:41 -0700	[diff] [blame]	127	config PSTORE_FTRACE
				128	bool "Persistent function tracer"
				129	depends on PSTORE
				130	depends on FUNCTION_TRACER
Anton Vorontsov	65f8c95	2012-07-17 14:26:15 -0700	[diff] [blame]	131	depends on DEBUG_FS
Anton Vorontsov	060287b	2012-07-09 17:10:41 -0700	[diff] [blame]	132	help
				133	With this option kernel traces function calls into a persistent
				134	ram buffer that can be decoded and dumped after reboot through
				135	pstore filesystem. It can be used to determine what function
				136	was last called before a reset or panic.
				137
				138	If unsure, say N.
				139
Anton Vorontsov	1894a25	2012-05-16 05:43:08 -0700	[diff] [blame]	140	config PSTORE_RAM
				141	tristate "Log panic/oops to a RAM buffer"
Anton Vorontsov	1894a25	2012-05-16 05:43:08 -0700	[diff] [blame]	142	depends on PSTORE
Anton Vorontsov	cddb875	2012-05-17 00:15:08 -0700	[diff] [blame]	143	depends on HAS_IOMEM
				144	depends on HAVE_MEMBLOCK
				145	select REED_SOLOMON
				146	select REED_SOLOMON_ENC8
				147	select REED_SOLOMON_DEC8
Anton Vorontsov	1894a25	2012-05-16 05:43:08 -0700	[diff] [blame]	148	help
				149	This enables panic and oops messages to be logged to a circular
				150	buffer in RAM where it can be read back at some later point.
				151
				152	Note that for historical reasons, the module will be named
				153	"ramoops.ko".
				154
Mauro Carvalho Chehab	8c27ceff3	2016-10-18 10:12:27 -0200	[diff] [blame]	155	For more information, see Documentation/admin-guide/ramoops.rst.