From 53ad908a646eb6fd67f9b4586f4b484e8255b9d3 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Fri, 7 Mar 2014 14:36:22 +0100
Subject: score: Add SMP lock profiling support

---
 cpukit/sapi/src/profilingiterate.c | 62 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

(limited to 'cpukit/sapi/src/profilingiterate.c')

diff --git a/cpukit/sapi/src/profilingiterate.c b/cpukit/sapi/src/profilingiterate.c
index 28c06a4689..956dbde887 100644
--- a/cpukit/sapi/src/profilingiterate.c
+++ b/cpukit/sapi/src/profilingiterate.c
@@ -18,6 +18,7 @@
 
 #include <rtems/profiling.h>
 #include <rtems/counter.h>
+#include <rtems/score/smplock.h>
 #include <rtems.h>
 
 #include <string.h>
@@ -76,6 +77,66 @@ static void per_cpu_stats_iterate(
 #endif
 }
 
+#if defined(RTEMS_PROFILING) && defined(RTEMS_SMP)
+RTEMS_STATIC_ASSERT(
+  RTEMS_PROFILING_SMP_LOCK_CONTENTION_COUNTS
+    == SMP_LOCK_STATS_CONTENTION_COUNTS,
+  smp_lock_contention_counts
+);
+#endif
+
+static void smp_lock_stats_iterate(
+  rtems_profiling_visitor visitor,
+  void *visitor_arg,
+  rtems_profiling_data *data
+)
+{
+#if defined(RTEMS_PROFILING) && defined(RTEMS_SMP)
+  SMP_lock_Stats_iteration_context iteration_context;
+  SMP_lock_Stats snapshot;
+  char name[64];
+
+  memset(data, 0, sizeof(*data));
+  data->header.type = RTEMS_PROFILING_SMP_LOCK;
+
+  _SMP_lock_Stats_iteration_start(&iteration_context);
+  while (
+    _SMP_lock_Stats_iteration_next(
+      &iteration_context,
+      &snapshot,
+      &name[0],
+      sizeof(name)
+    )
+  ) {
+    rtems_profiling_smp_lock *smp_lock_data = &data->smp_lock;
+
+    smp_lock_data->name = name;
+    smp_lock_data->max_acquire_time =
+      rtems_counter_ticks_to_nanoseconds(snapshot.max_acquire_time);
+    smp_lock_data->max_section_time =
+      rtems_counter_ticks_to_nanoseconds(snapshot.max_section_time);
+    smp_lock_data->usage_count = snapshot.usage_count;
+    smp_lock_data->total_acquire_time =
+      rtems_counter_ticks_to_nanoseconds(snapshot.total_acquire_time);
+    smp_lock_data->total_section_time =
+      rtems_counter_ticks_to_nanoseconds(snapshot.total_section_time);
+
+    memcpy(
+      &smp_lock_data->contention_counts[0],
+      &snapshot.contention_counts[0],
+      sizeof(smp_lock_data->contention_counts)
+    );
+
+    (*visitor)(visitor_arg, data);
+  }
+  _SMP_lock_Stats_iteration_stop(&iteration_context);
+#else
+  (void) visitor;
+  (void) visitor_arg;
+  (void) data;
+#endif
+}
+
 void rtems_profiling_iterate(
   rtems_profiling_visitor visitor,
   void *visitor_arg
@@ -84,4 +145,5 @@ void rtems_profiling_iterate(
   rtems_profiling_data data;
 
   per_cpu_stats_iterate(visitor, visitor_arg, &data);
+  smp_lock_stats_iterate(visitor, visitor_arg, &data);
 }
-- 
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