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.

cpukit/sapi/src/profilingiterate.c

@@ -17,10 +17,71 @@
 #endif
 
 #include <rtems/profiling.h>
+#include <rtems/counter.h>
+#include <rtems.h>
+
+#include <string.h>
+
+static void per_cpu_stats_iterate(
+  rtems_profiling_visitor visitor,
+  void *visitor_arg,
+  rtems_profiling_data *data
+)
+{
+#ifdef RTEMS_PROFILING
+  uint32_t n = rtems_smp_get_processor_count();
+  uint32_t i;
+
+  memset(data, 0, sizeof(*data));
+  data->header.type = RTEMS_PROFILING_PER_CPU;
+  for (i = 0; i < n; ++i) {
+    const Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index(i);
+    const Per_CPU_Stats *stats = &per_cpu->Stats;
+    rtems_profiling_per_cpu *per_cpu_data = &data->per_cpu;
+
+    per_cpu_data->processor_index = i;
+
+    per_cpu_data->max_thread_dispatch_disabled_time =
+      rtems_counter_ticks_to_nanoseconds(
+        stats->max_thread_dispatch_disabled_time
+      );
+
+    per_cpu_data->max_interrupt_time =
+      rtems_counter_ticks_to_nanoseconds(stats->max_interrupt_time);
+
+    per_cpu_data->max_interrupt_delay =
+      rtems_counter_ticks_to_nanoseconds(stats->max_interrupt_delay);
+
+    per_cpu_data->thread_dispatch_disabled_count =
+      stats->thread_dispatch_disabled_count;
+
+    per_cpu_data->total_thread_dispatch_disabled_time =
+      rtems_counter_ticks_to_nanoseconds(
+        stats->total_thread_dispatch_disabled_time
+      );
+
+    per_cpu_data->interrupt_count = stats->interrupt_count;
+
+    per_cpu_data->total_interrupt_time =
+      rtems_counter_ticks_to_nanoseconds(
+        stats->total_interrupt_time
+      );
+
+    (*visitor)(visitor_arg, data);
+  }
+#else
+  (void) visitor;
+  (void) visitor_arg;
+  (void) data;
+#endif
+}
 
 void rtems_profiling_iterate(
   rtems_profiling_visitor visitor,
   void *visitor_arg
 )
 {
+  rtems_profiling_data data;
+
+  per_cpu_stats_iterate(visitor, visitor_arg, &data);
 }