inet: switch IP ID generator to siphash

[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index e79d9a73f0c140857fdbc84e5dc1fa92baf2860d..92ae180bb084e0d586b6250d0827126ff28e14e0 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -498,6 +498,26 @@ config PSI
 
          Say N if unsure.
 
+config PSI_DEFAULT_DISABLED
+       bool "Require boot parameter to enable pressure stall information tracking"
+       default n
+       depends on PSI
+       help
+         If set, pressure stall information tracking will be 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"