[rtems-tools commit] record: Add CPU to idle thread names

[Sebastian Huber]

Module:    rtems-tools
Branch:    master
Commit:    6c4b7702df584d472e9f214a351fc3d37ac36dc4
Changeset: http://git.rtems.org/rtems-tools/commit/?id=6c4b7702df584d472e9f214a351fc3d37ac36dc4

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Tue Aug 27 08:06:30 2019 +0200

record: Add CPU to idle thread names

Update #3665.

---

 trace/record/record-main-lttng.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/trace/record/record-main-lttng.c b/trace/record/record-main-lttng.c
index b08623c..bde15c1 100644
--- a/trace/record/record-main-lttng.c
+++ b/trace/record/record-main-lttng.c
@@ -209,6 +209,19 @@ static void copy_thread_name(
   }
 
   memcpy( dst, name, THREAD_NAME_SIZE );
+
+  if ( is_idle_task_by_api_index( api_index ) ) {
+    /*
+     * In Linux, the idle threads are bound to a specific CPU (swapper/n).  In
+     * RTEMS, the idle threads can move around, so mimic this Linux behaviour.
+     */
+    snprintf(
+      (char *) dst + 4,
+      THREAD_NAME_SIZE - 4,
+      "/%lu",
+      (unsigned long) item->cpu
+    );
+  }
 }
 
 static void write_sched_switch(