1# 2# RCU-related debugging configuration options 3# 4 5menu "RCU Debugging" 6 7config PROVE_RCU 8 def_bool PROVE_LOCKING 9 10config TORTURE_TEST 11 tristate 12 default n 13 14config RCU_PERF_TEST 15 tristate "performance tests for RCU" 16 depends on DEBUG_KERNEL 17 select TORTURE_TEST 18 select SRCU 19 select TASKS_RCU 20 default n 21 help 22 This option provides a kernel module that runs performance 23 tests on the RCU infrastructure. The kernel module may be built 24 after the fact on the running kernel to be tested, if desired. 25 26 Say Y here if you want RCU performance tests to be built into 27 the kernel. 28 Say M if you want the RCU performance tests to build as a module. 29 Say N if you are unsure. 30 31config RCU_TORTURE_TEST 32 tristate "torture tests for RCU" 33 depends on DEBUG_KERNEL 34 select TORTURE_TEST 35 select SRCU 36 select TASKS_RCU 37 default n 38 help 39 This option provides a kernel module that runs torture tests 40 on the RCU infrastructure. The kernel module may be built 41 after the fact on the running kernel to be tested, if desired. 42 43 Say Y here if you want RCU torture tests to be built into 44 the kernel. 45 Say M if you want the RCU torture tests to build as a module. 46 Say N if you are unsure. 47 48config RCU_CPU_STALL_TIMEOUT 49 int "RCU CPU stall timeout in seconds" 50 depends on RCU_STALL_COMMON 51 range 3 300 52 default 21 53 help 54 If a given RCU grace period extends more than the specified 55 number of seconds, a CPU stall warning is printed. If the 56 RCU grace period persists, additional CPU stall warnings are 57 printed at more widely spaced intervals. 58 59config RCU_TRACE 60 bool "Enable tracing for RCU" 61 depends on DEBUG_KERNEL 62 default y if TREE_RCU 63 select TRACE_CLOCK 64 help 65 This option enables additional tracepoints for ftrace-style 66 event tracing. 67 68 Say Y here if you want to enable RCU tracing 69 Say N if you are unsure. 70 71config RCU_EQS_DEBUG 72 bool "Provide debugging asserts for adding NO_HZ support to an arch" 73 depends on DEBUG_KERNEL 74 help 75 This option provides consistency checks in RCU's handling of 76 NO_HZ. These checks have proven quite helpful in detecting 77 bugs in arch-specific NO_HZ code. 78 79 Say N here if you need ultimate kernel/user switch latencies 80 Say Y if you are unsure 81 82endmenu # "RCU Debugging" 83