kernel/rcu/Kconfig.debug

   1 #
   2 # RCU-related debugging configuration options
   3 #
   4
   5 menu "RCU Debugging"
   6
   7 config PROVE_RCU
   8         def_bool PROVE_LOCKING
   9
  10 config TORTURE_TEST
  11         tristate
  12         default n
  13
  14 config 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
  31 config 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
  48 config 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
  59 config 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
  71 config 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
  82 endmenu # "RCU Debugging"