forked from luck/tmp_suning_uos_patched
6c36dfe949
This is an x86-specific module and would benefit from being closer to the arch code. Move it there. Update copyright while at it. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/1439396985-12812-14-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
36 lines
1.4 KiB
Plaintext
36 lines
1.4 KiB
Plaintext
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
|
|
|
|
endif
|