git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@223 35acf78f-673a-0410-8e92-d51de3d6d3f4

readme.txt

@@ -65,6 +65,8 @@ AVR-AT90CANx-GCC       - Port on AVR AT90CAN128, not tested on hardware yet.
 *** 0.6.1 ***
 - Removed some redundant checks from the scheduler code: improved threads
   flyback time.
+- Manual optimization in chSchReadyI(), it seems GCC is missing some obvious
+  code optimizations here. Both code size and speed improved.
 - Removed the -falign-functions=16 option from the AT91SAM7X demo makefiles,
   the Atmel chip does not require it, the option is still present on the
   LPC21xx demos. This saves significant ROM space.

src/chschd.c

@@ -24,7 +24,7 @@
 
 #include <ch.h>
 
-/** @cond never*/
+/** @cond never */
 ReadyList rlist;
 /** @endcond */
 
@@ -58,10 +58,11 @@ INLINE void chSchReadyI(Thread *tp, msg_t msg) {
 #else
 void chSchReadyI(Thread *tp, msg_t msg) {
 #endif
-  Thread *cp = rlist.r_queue.p_next;
+  Thread *cp;
 
   tp->p_state = PRREADY;
   tp->p_rdymsg = msg;
+  cp = rlist.r_queue.p_next;
   while (cp->p_prio >= tp->p_prio)
     cp = cp->p_next;
   /* Insertion on p_prev.*/

src/include/threads.h

@@ -107,30 +107,28 @@ struct Thread {
 #endif
 };
 
-/** Thread state: Reserved.*/
-#define PRFREE      0
+/** Thread state: Thread in the ready list.*/
+#define PRREADY     0
 /** Thread state: Current.*/
 #define PRCURR      1
-/** Thread state: Thread in the ready list.*/
-#define PRREADY     2
 /** Thread state: Thread created in suspended state.*/
-#define PRSUSPENDED 3
+#define PRSUSPENDED 2
 /** Thread state: Waiting on a semaphore.*/
-#define PRWTSEM     4
+#define PRWTSEM     3
 /** Thread state: Waiting on a mutex.*/
-#define PRWTMTX     5
+#define PRWTMTX     4
 /** Thread state: Waiting in \p chThdSleep() or \p chThdSleepUntil().*/
-#define PRSLEEP     6
+#define PRSLEEP     5
 /** Thread state: Waiting in \p chThdWait().*/
-#define PRWAIT      7
+#define PRWAIT      6
 /** Thread state: Waiting in \p chEvtWait().*/
-#define PRWTEVENT   8
+#define PRWTEVENT   7
 /** Thread state: Waiting in \p chMsgSend().*/
-#define PRSNDMSG    9
+#define PRSNDMSG    8
 /** Thread state: Waiting in \p chMsgWait().*/
-#define PRWTMSG     10
+#define PRWTMSG     9
 /** Thread state: After termination.*/
-#define PREXIT      11
+#define PREXIT      10
 
 #ifdef CH_USE_TERMINATE
 /** Thread option: Termination requested flag.*/