[linux-2.6-block.git] / drivers / ras / Kconfig

# SPDX-License-Identifier: GPL-2.0-only
menuconfig RAS
	bool "Reliability, Availability and Serviceability (RAS) features"
	help
	  Reliability, availability and serviceability (RAS) is a computer
	  hardware engineering term. Computers designed with higher levels
	  of RAS have a multitude of features that protect data integrity
	  and help them stay available for long periods of time without
	  failure.

	  Reliability can be defined as the probability that the system will
	  produce correct outputs up to some given time. Reliability is
	  enhanced by features that help to avoid, detect and repair hardware
	  faults.

	  Availability is the probability a system is operational at a given
	  time, i.e. the amount of time a device is actually operating as the
	  percentage of total time it should be operating.

	  Serviceability or maintainability is the simplicity and speed with
	  which a system can be repaired or maintained; if the time to repair
	  a failed system increases, then availability will decrease.

	  Note that Reliability and Availability are distinct concepts:
	  Reliability is a measure of the ability of a system to function
	  correctly, including avoiding data corruption, whereas Availability
	  measures how often it is available for use, even though it may not
	  be functioning correctly. For example, a server may run forever and
	  so have ideal availability, but may be unreliable, with frequent
	  data corruption.

if RAS

source "arch/x86/ras/Kconfig"
source "drivers/ras/amd/atl/Kconfig"

config RAS_FMPM
	tristate "FRU Memory Poison Manager"
	default m
	depends on AMD_ATL && ACPI_APEI
	help
	  Support saving and restoring memory error information across reboot
	  using ACPI ERST as persistent storage. Error information is saved with
	  the UEFI CPER "FRU Memory Poison" section format.

	  Memory will be retired during boot time and run time depending on
	  platform-specific policies.

endif
Commit	Line	Data
ec8f24b7	1	# SPDX-License-Identifier: GPL-2.0-only
9b45ef44 BP	2	menuconfig RAS
	3	bool "Reliability, Availability and Serviceability (RAS) features"
	4	help
	5	Reliability, availability and serviceability (RAS) is a computer
	6	hardware engineering term. Computers designed with higher levels
	7	of RAS have a multitude of features that protect data integrity
	8	and help them stay available for long periods of time without
	9	failure.
	10
	11	Reliability can be defined as the probability that the system will
	12	produce correct outputs up to some given time. Reliability is
	13	enhanced by features that help to avoid, detect and repair hardware
	14	faults.
	15
	16	Availability is the probability a system is operational at a given
	17	time, i.e. the amount of time a device is actually operating as the
	18	percentage of total time it should be operating.
	19
	20	Serviceability or maintainability is the simplicity and speed with
	21	which a system can be repaired or maintained; if the time to repair
	22	a failed system increases, then availability will decrease.
	23
	24	Note that Reliability and Availability are distinct concepts:
	25	Reliability is a measure of the ability of a system to function
	26	correctly, including avoiding data corruption, whereas Availability
	27	measures how often it is available for use, even though it may not
	28	be functioning correctly. For example, a server may run forever and
	29	so have ideal availability, but may be unreliable, with frequent
	30	data corruption.
	31
	32	if RAS
6c36dfe9	33
8636a1f9	34	source "arch/x86/ras/Kconfig"
3f317499	35	source "drivers/ras/amd/atl/Kconfig"
6c36dfe9	36
6f15e617 YG	37	config RAS_FMPM
	38	tristate "FRU Memory Poison Manager"
	39	default m
	40	depends on AMD_ATL && ACPI_APEI
	41	help
	42	Support saving and restoring memory error information across reboot
	43	using ACPI ERST as persistent storage. Error information is saved with
	44	the UEFI CPER "FRU Memory Poison" section format.
	45
	46	Memory will be retired during boot time and run time depending on
	47	platform-specific policies.
	48
9b45ef44	49	endif