LXR linux/kernel/rcu/Kconfig.debug

   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