Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-flexiantxendom0-3.2.10.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 9739c0b..05037dc 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -931,6 +931,30 @@ config RCU_CPU_STALL_VERBOSE
 
          Say Y if you want to enable such checks.
 
+config RCU_CPU_STALL_INFO
+       bool "Print additional diagnostics on RCU CPU stall"
+       depends on (TREE_RCU || TREE_PREEMPT_RCU) && DEBUG_KERNEL
+       default n
+       help
+         For each stalled CPU that is aware of the current RCU grace
+         period, print out additional per-CPU diagnostic information
+         regarding scheduling-clock ticks, idle state, and,
+         for RCU_FAST_NO_HZ kernels, idle-entry state.
+
+         Say N if you are unsure.
+
+         Say Y if you want to enable such diagnostics.
+
+config RCU_TRACE
+       bool "Enable tracing for RCU"
+       depends on DEBUG_KERNEL
+       help
+         This option provides tracing in RCU which presents stats
+         in debugfs for debugging RCU implementation.
+
+         Say Y here if you want to enable RCU tracing
+         Say N if you are unsure.
+
 config KPROBES_SANITY_TEST
        bool "Kprobes sanity tests"
        depends on DEBUG_KERNEL