These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / ras / Kconfig

diff --git a/kernel/drivers/ras/Kconfig b/kernel/drivers/ras/Kconfig
index f9da613..4c3c67d 100644 (file)
--- a/kernel/drivers/ras/Kconfig
+++ b/kernel/drivers/ras/Kconfig
@@ -1,2 +1,35 @@
-config RAS
-       bool
+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