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-rw-r--r--init/Kconfig20
1 files changed, 1 insertions, 19 deletions
diff --git a/init/Kconfig b/init/Kconfig
index f88da2d1c1f..8e8b76d8a27 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -324,17 +324,6 @@ config TREE_RCU
thousands of CPUs. It also scales down nicely to
smaller systems.
-config PREEMPT_RCU
- bool "Preemptible RCU"
- depends on PREEMPT
- help
- This option reduces the latency of the kernel by making certain
- RCU sections preemptible. Normally RCU code is non-preemptible, if
- this option is selected then read-only RCU sections become
- preemptible. This helps latency, but may expose bugs due to
- now-naive assumptions about each RCU read-side critical section
- remaining on a given CPU through its execution.
-
config TREE_PREEMPT_RCU
bool "Preemptable tree-based hierarchical RCU"
depends on PREEMPT
@@ -348,7 +337,7 @@ endchoice
config RCU_TRACE
bool "Enable tracing for RCU"
- depends on TREE_RCU || PREEMPT_RCU || TREE_PREEMPT_RCU
+ depends on TREE_RCU || TREE_PREEMPT_RCU
help
This option provides tracing in RCU which presents stats
in debugfs for debugging RCU implementation.
@@ -395,13 +384,6 @@ config TREE_RCU_TRACE
TREE_PREEMPT_RCU implementations, permitting Makefile to
trivially select kernel/rcutree_trace.c.
-config PREEMPT_RCU_TRACE
- def_bool RCU_TRACE && PREEMPT_RCU
- select DEBUG_FS
- help
- This option provides tracing for the PREEMPT_RCU implementation,
- permitting Makefile to trivially select kernel/rcupreempt_trace.c.
-
endmenu # "RCU Subsystem"
config IKCONFIG