1 files changed, 22 insertions, 0 deletions

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index a604f24c755f..8abcaf821beb 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -175,6 +175,28 @@ config TRACE_UNLIKELY_PROFILE
 
           Say N if unsure.
 
+config TRACING_UNLIKELY
+        bool
+        help
+          Selected by tracers that will trace the likely and unlikely
+          conditions. This prevents the tracers themselves from being
+          profiled. Profiling the tracing infrastructure can only happen
+          when the likelys and unlikelys are not being traced.
+
+config UNLIKELY_TRACER
+        bool "Trace likely/unlikely instances"
+        depends on TRACE_UNLIKELY_PROFILE
+        select TRACING_UNLIKELY
+        help
+          This traces the events of likely and unlikely condition
+          calls in the kernel.  The difference between this and the
+          "Trace likely/unlikely profiler" is that this is not a
+          histogram of the callers, but actually places the calling
+          events into a running trace buffer to see when and where the
+          events happened, as well as their results.
+
+          Say N if unsure.
+
 config STACK_TRACER
         bool "Trace max stack"
         depends on HAVE_FUNCTION_TRACER