score: Add per-CPU profiling

Add per-CPU profiling stats API.  Implement the thread dispatch disable
level profiling.  The interrupt profiling must be implemented in CPU
port specific parts (mostly assembler code).  Add a support function
_Profiling_Outer_most_interrupt_entry_and_exit() for this purpose.

1 files changed, 45 insertions, 0 deletions

diff --git a/cpukit/score/src/profilingisrentryexit.c b/cpukit/score/src/profilingisrentryexit.c
new file mode 100644
index 0000000000..3367e9800e
--- /dev/null
+++ b/cpukit/score/src/profilingisrentryexit.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/score/profiling.h>
+
+void _Profiling_Outer_most_interrupt_entry_and_exit(
+  Per_CPU_Control *per_cpu,
+  CPU_Counter_ticks interrupt_entry_instant,
+  CPU_Counter_ticks interrupt_exit_instant
+)
+{
+#if defined( RTEMS_PROFILING )
+  Per_CPU_Stats *stats = &per_cpu->Stats;
+  CPU_Counter_ticks delta = _CPU_Counter_difference(
+    interrupt_exit_instant,
+    interrupt_entry_instant
+  );
+
+  ++stats->interrupt_count;
+  stats->total_interrupt_time += delta;
+
+  if ( stats->max_interrupt_time < delta ) {
+    stats->max_interrupt_time = delta;
+  }
+#else
+  (void) per_cpu;
+  (void) interrupt_entry_instant;
+  (void) interrupt_exit_instant;
+#endif
+}