[ported from 2008.3] Core LITMUS^RT infrastructure

Port 2008.3 Core LITMUS^RT infrastructure to Linux 2.6.32

litmus_sched_class implements 4 new methods:

- prio_changed:
  void

- switched_to:
  void

- get_rr_interval:
  return infinity (i.e., 0)

- select_task_rq:
  return current cpu

1 files changed, 50 insertions, 0 deletions

diff --git a/litmus/Kconfig b/litmus/Kconfig
new file mode 100644
index 000000000000..f8c642658a2f
--- /dev/null
+++ b/litmus/Kconfig
@@ -0,0 +1,50 @@
+menu "LITMUS^RT"
+
+menu "Tracing"
+
+config FEATHER_TRACE
+        bool "Feather-Trace Infrastructure"
+        default y
+        help
+          Feather-Trace basic tracing infrastructure. Includes device file
+          driver and instrumentation point support.
+
+
+config SCHED_TASK_TRACE
+        bool "Trace real-time tasks"
+        depends on FEATHER_TRACE
+        default y
+        help
+          Include support for the sched_trace_XXX() tracing functions. This
+          allows the collection of real-time task events such as job
+          completions, job releases, early completions, etc. This results in  a
+          small overhead in the scheduling code. Disable if the overhead is not
+          acceptable (e.g., benchmarking).
+
+          Say Yes for debugging.
+          Say No for overhead tracing.
+
+config SCHED_OVERHEAD_TRACE
+        bool "Record timestamps for overhead measurements"
+        depends on FEATHER_TRACE
+        default n
+        help
+          Export event stream for overhead tracing.
+          Say Yes for overhead tracing.
+
+config SCHED_DEBUG_TRACE
+        bool "TRACE() debugging"
+        default y
+        help
+          Include support for sched_trace_log_messageg(), which is used to
+          implement TRACE(). If disabled, no TRACE() messages will be included
+          in the kernel, and no overheads due to debugging statements will be
+          incurred by the scheduler. Disable if the overhead is not acceptable
+          (e.g. benchmarking).
+
+          Say Yes for debugging.
+          Say No for overhead tracing.
+
+endmenu
+
+endmenu