# SPDX-License-Identifier: GPL-2.0-only## RCU-related debugging configuration options# menu "RCU Debugging" config PROVE_RCU	def_bool PROVE_LOCKING config PROVE_RCU_LIST	bool "RCU list lockdep debugging"	depends on PROVE_RCU && RCU_EXPERT	default n	help	  Enable RCU lockdep checking for list usages. By default it is	  turned off since there are several list RCU users that still	  need to be converted to pass a lockdep expression. To prevent	  false-positive splats, we keep it default disabled but once all	  users are converted, we can remove this config option. 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	select TASKS_RUDE_RCU	select TASKS_TRACE_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	select TASKS_RUDE_RCU	select TASKS_TRACE_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"