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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-05-17 09:19:44 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-06-08 18:52:44 -0700
commit43a0a2a7d725f2ed2547cd656749eb66c093f2c2 (patch)
tree578140010fdac30adcb1d38d8f9ccf65202bd040 /kernel/rcu
parent0af92d46098a092aa5817dfeb6d24a8d85b66205 (diff)
rcu: Move RCU debug Kconfig options to kernel/rcu
RCU's debugging Kconfig options are in the unintuitive location lib/Kconfig.debug, and there are enough of them that it would be good for them to be more centralized. This commit therefore extracts RCU's Kconfig options from init/Kconfig into a new kernel/rcu/Kconfig.debug file. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/Kconfig.debug82
1 files changed, 82 insertions, 0 deletions
diff --git a/kernel/rcu/Kconfig.debug b/kernel/rcu/Kconfig.debug
new file mode 100644
index 000000000000..0ec7d1d33a14
--- /dev/null
+++ b/kernel/rcu/Kconfig.debug
@@ -0,0 +1,82 @@
+#
+# RCU-related debugging configuration options
+#
+
+menu "RCU Debugging"
+
+config PROVE_RCU
+ def_bool PROVE_LOCKING
+
+config TORTURE_TEST
+ tristate
+ default n
+
+config RCU_PERF_TEST
+ tristate "performance tests for RCU"
+ depends on DEBUG_KERNEL
+ select TORTURE_TEST
+ select SRCU
+ select TASKS_RCU
+ default n
+ help
+ This option provides a kernel module that runs performance
+ tests on the RCU infrastructure. The kernel module may be built
+ after the fact on the running kernel to be tested, if desired.
+
+ Say Y here if you want RCU performance tests to be built into
+ the kernel.
+ Say M if you want the RCU performance tests to build as a module.
+ Say N if you are unsure.
+
+config RCU_TORTURE_TEST
+ tristate "torture tests for RCU"
+ depends on DEBUG_KERNEL
+ select TORTURE_TEST
+ select SRCU
+ select TASKS_RCU
+ default n
+ help
+ This option provides a kernel module that runs torture tests
+ on the RCU infrastructure. The kernel module may be built
+ after the fact on the running kernel to be tested, if desired.
+
+ Say Y here if you want RCU torture tests to be built into
+ the kernel.
+ Say M if you want the RCU torture tests to build as a module.
+ Say N if you are unsure.
+
+config RCU_CPU_STALL_TIMEOUT
+ int "RCU CPU stall timeout in seconds"
+ depends on RCU_STALL_COMMON
+ range 3 300
+ default 21
+ help
+ If a given RCU grace period extends more than the specified
+ number of seconds, a CPU stall warning is printed. If the
+ RCU grace period persists, additional CPU stall warnings are
+ printed at more widely spaced intervals.
+
+config RCU_TRACE
+ bool "Enable tracing for RCU"
+ depends on DEBUG_KERNEL
+ default y if TREE_RCU
+ select TRACE_CLOCK
+ help
+ This option enables additional tracepoints for ftrace-style
+ event tracing.
+
+ Say Y here if you want to enable RCU tracing
+ Say N if you are unsure.
+
+config RCU_EQS_DEBUG
+ bool "Provide debugging asserts for adding NO_HZ support to an arch"
+ depends on DEBUG_KERNEL
+ help
+ This option provides consistency checks in RCU's handling of
+ NO_HZ. These checks have proven quite helpful in detecting
+ bugs in arch-specific NO_HZ code.
+
+ Say N here if you need ultimate kernel/user switch latencies
+ Say Y if you are unsure
+
+endmenu # "RCU Debugging"