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>
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Paul E. McKenney
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0af92d4609
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#
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# RCU-related debugging configuration options
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#
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menu "RCU Debugging"
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config PROVE_RCU
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def_bool PROVE_LOCKING
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config TORTURE_TEST
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tristate
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default n
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config RCU_PERF_TEST
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tristate "performance tests for RCU"
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depends on DEBUG_KERNEL
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select TORTURE_TEST
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select SRCU
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select TASKS_RCU
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default n
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help
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This option provides a kernel module that runs performance
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tests on the RCU infrastructure. The kernel module may be built
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after the fact on the running kernel to be tested, if desired.
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Say Y here if you want RCU performance tests to be built into
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the kernel.
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Say M if you want the RCU performance tests to build as a module.
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Say N if you are unsure.
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config RCU_TORTURE_TEST
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tristate "torture tests for RCU"
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depends on DEBUG_KERNEL
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select TORTURE_TEST
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select SRCU
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select TASKS_RCU
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default n
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help
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This option provides a kernel module that runs torture tests
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on the RCU infrastructure. The kernel module may be built
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after the fact on the running kernel to be tested, if desired.
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Say Y here if you want RCU torture tests to be built into
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the kernel.
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Say M if you want the RCU torture tests to build as a module.
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Say N if you are unsure.
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config RCU_CPU_STALL_TIMEOUT
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int "RCU CPU stall timeout in seconds"
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depends on RCU_STALL_COMMON
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range 3 300
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default 21
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help
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If a given RCU grace period extends more than the specified
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number of seconds, a CPU stall warning is printed. If the
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RCU grace period persists, additional CPU stall warnings are
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printed at more widely spaced intervals.
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config RCU_TRACE
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bool "Enable tracing for RCU"
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depends on DEBUG_KERNEL
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default y if TREE_RCU
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select TRACE_CLOCK
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help
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This option enables additional tracepoints for ftrace-style
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event tracing.
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Say Y here if you want to enable RCU tracing
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Say N if you are unsure.
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config RCU_EQS_DEBUG
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bool "Provide debugging asserts for adding NO_HZ support to an arch"
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depends on DEBUG_KERNEL
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help
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This option provides consistency checks in RCU's handling of
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NO_HZ. These checks have proven quite helpful in detecting
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bugs in arch-specific NO_HZ code.
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Say N here if you need ultimate kernel/user switch latencies
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Say Y if you are unsure
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endmenu # "RCU Debugging"
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@ -1301,84 +1301,7 @@ config DEBUG_CREDENTIALS
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If unsure, say N.
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menu "RCU Debugging"
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config PROVE_RCU
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def_bool PROVE_LOCKING
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config TORTURE_TEST
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tristate
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default n
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config RCU_PERF_TEST
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tristate "performance tests for RCU"
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depends on DEBUG_KERNEL
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select TORTURE_TEST
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select SRCU
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select TASKS_RCU
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default n
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help
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This option provides a kernel module that runs performance
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tests on the RCU infrastructure. The kernel module may be built
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after the fact on the running kernel to be tested, if desired.
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Say Y here if you want RCU performance tests to be built into
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the kernel.
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Say M if you want the RCU performance tests to build as a module.
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Say N if you are unsure.
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config RCU_TORTURE_TEST
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tristate "torture tests for RCU"
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depends on DEBUG_KERNEL
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select TORTURE_TEST
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select SRCU
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select TASKS_RCU
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default n
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help
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This option provides a kernel module that runs torture tests
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on the RCU infrastructure. The kernel module may be built
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after the fact on the running kernel to be tested, if desired.
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Say Y here if you want RCU torture tests to be built into
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the kernel.
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Say M if you want the RCU torture tests to build as a module.
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Say N if you are unsure.
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config RCU_CPU_STALL_TIMEOUT
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int "RCU CPU stall timeout in seconds"
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depends on RCU_STALL_COMMON
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range 3 300
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default 21
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help
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If a given RCU grace period extends more than the specified
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number of seconds, a CPU stall warning is printed. If the
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RCU grace period persists, additional CPU stall warnings are
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printed at more widely spaced intervals.
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config RCU_TRACE
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bool "Enable tracing for RCU"
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depends on DEBUG_KERNEL
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default y if TREE_RCU
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select TRACE_CLOCK
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help
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This option enables additional tracepoints for ftrace-style
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event tracing.
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Say Y here if you want to enable RCU tracing
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Say N if you are unsure.
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config RCU_EQS_DEBUG
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bool "Provide debugging asserts for adding NO_HZ support to an arch"
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depends on DEBUG_KERNEL
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help
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This option provides consistency checks in RCU's handling of
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NO_HZ. These checks have proven quite helpful in detecting
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bugs in arch-specific NO_HZ code.
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Say N here if you need ultimate kernel/user switch latencies
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Say Y if you are unsure
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endmenu # "RCU Debugging"
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source "kernel/rcu/Kconfig.debug"
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config DEBUG_WQ_FORCE_RR_CPU
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bool "Force round-robin CPU selection for unbound work items"
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