Changeset 391 for soft/giet_vm/giet_kernel/ctx_handler.c

Timestamp:

Aug 11, 2014, 9:19:06 PM (10 years ago)

Author:

alain

Message:

Idle task stack implementation. The idle stack was previously implemented in the
seg_kernel data, and this was a scalabity bottleneck. i
A 4 Kbytes stack for idle stack is now implemented in the processor scheduler segment.

File:

• soft/giet_vm/giet_kernel/ctx_handler.c (modified) (2 diffs)

soft/giet_vm/giet_kernel/ctx_handler.c

@@ -103 +103 @@
 void _idle_task() 
 {
+    unsigned int gpid       = _get_procid();
+    unsigned int cluster_xy = gpid / NB_PROCS_MAX;
+    unsigned int lpid       = gpid % NB_PROCS_MAX;
+    unsigned int x          = cluster_xy >> Y_WIDTH;
+    unsigned int y          = cluster_xy & ((1<<Y_WIDTH)-1);
+
     while(1)
     {
+        // initialize counter
         unsigned int count = GIET_IDLE_TASK_PERIOD;
 
@@ -119 +126 @@
 
         // warning message
-        unsigned int gpid       = _get_procid();
-        unsigned int cluster_xy = gpid / NB_PROCS_MAX;
-        unsigned int lpid       = gpid % NB_PROCS_MAX;
-        unsigned int x          = cluster_xy >> Y_WIDTH;
-        unsigned int y          = cluster_xy & ((1<<Y_WIDTH)-1);
-
         _printf("\n[GIET WARNING] Processor[%d,%d,%d] still idle at cycle %d\n",
                 x, y, lpid, _get_proctime() );
-
     }
 } // end ctx_idle()