X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fkern%2Fidle.c;h=7ba8d617d34a4177860e77876774a5ccb33d6bf8;hb=56bc2446f9445052fb0d7b1643628bbf4fc3cfe0;hp=229058bd4ba1c0e538a591baeda3e907ef1d2639;hpb=d3860ea45a63b0443e4e75a16b402ada83078d12;p=bertos.git

diff --git a/bertos/kern/idle.c b/bertos/kern/idle.c
index 229058bd..7ba8d617 100644
--- a/bertos/kern/idle.c
+++ b/bertos/kern/idle.c
@@ -31,17 +31,22 @@
  *
  * \brief Idle loop for preemptive scheduling
  *
- * \version $Id: proc.c 1616 2008-08-10 19:41:26Z bernie $
+ * \version $Id$
  * \author Bernie Innocenti <bernie@codewiz.org>
  */
 
 #include "idle.h"
 #include "proc.h"
 
+#include <cpu/power.h> // cpu_relax()
 #include <cfg/module.h>
+#include <cpu/types.h> // INT_MIN
 
+#include <kern/proc_p.h>
 
-static cpustack_t idle_stack[CONFIG_KERN_MINSTACKSIZE / sizeof(cpustack_t)];
+struct Process *idle_proc;
+
+static PROC_DEFINE_STACK(idle_stack, KERN_MINSTACKSIZE);
 
 /**
  * The idle process
@@ -59,14 +64,21 @@ static NORETURN void idle(void)
 {
 	for (;;)
 	{
-		TRACE;
-		//monitor_report();
-		proc_yield(); // FIXME: CPU_IDLE
+		PAUSE;
+		proc_switch();
 	}
 }
 
 void idle_init(void)
 {
-	struct Process *idle_proc = proc_new(idle, NULL, sizeof(idle_stack), idle_stack);
-	proc_setPri(idle_proc, (int)~0);
+	/*
+	 * Idle will be added to the ProcReadyList, but immediately removed
+	 * after the first cpu_relax() execution.
+	 *
+	 * XXX: it would be better to never add idle_proc to the ProcReadyList,
+	 * e.g., changing the prototype of proc_new() (or introducing a
+	 * proc_new_nostart()) to allow the creation of "sleeping" tasks.
+	 */
+	idle_proc = proc_new(idle, NULL, sizeof(idle_stack), idle_stack);
+	proc_setPri(idle_proc, INT_MIN);
 }