UPSTREAM: psi: clarify the Kconfig text for the Defenderault-disable option

[GitHub/MotorolaMobilityLLC/kernel-slsi.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index f3fcc15f57cf8ecd9b67572f0f55534ad3abadb9..92ae180bb084e0d586b6250d0827126ff28e14e0 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -507,6 +507,17 @@ config PSI_DEFAULT_DISABLED
          per default but can be enabled through passing psi=1 on the
          kernel commandline during boot.
 
+         This feature adds some code to the task wakeup and sleep
+         paths of the scheduler. The overhead is too low to affect
+         common scheduling-intense workloads in practice (such as
+         webservers, memcache), but it does show up in artificial
+         scheduler stress tests, such as hackbench.
+
+         If you are paranoid and not sure what the kernel will be
+         used for, say Y.
+
+         Say N if unsure.
+
 endmenu # "CPU/Task time and stats accounting"
 
 source "kernel/rcu/Kconfig"