From 307d87bdecde7d3fbd3af085314777e089bd7621 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 27 Mar 2016 14:30:20 +0000
Subject: [PATCH] Optimization in chSchWakeupS().

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9172 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 doc/rt/reports/STM32F746-216-GCC.txt | 8 ++++----
 os/rt/src/chschd.c                   | 5 +++--
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/doc/rt/reports/STM32F746-216-GCC.txt b/doc/rt/reports/STM32F746-216-GCC.txt
index 7ef8cb302..10fd4c2a7 100644
--- a/doc/rt/reports/STM32F746-216-GCC.txt
+++ b/doc/rt/reports/STM32F746-216-GCC.txt
@@ -2,7 +2,7 @@
 *** ChibiOS/RT test suite
 ***
 *** Kernel:       4.0.0
-*** Compiled:     Mar 27 2016 - 12:48:29
+*** Compiled:     Mar 27 2016 - 16:28:00
 *** Compiler:     GCC 4.9.3 20150529 (release) [ARM/embedded-4_9-branch revision 227977]
 *** Architecture: ARMv7E-M
 *** Core Variant: Cortex-M7
@@ -93,7 +93,7 @@
 --- Result: SUCCESS
 ----------------------------------------------------------------------------
 --- Test Case 11.1 (Benchmark, messages #1)
---- Score : 1018858 msgs/S, 2037716 ctxswc/S
+--- Score : 1023687 msgs/S, 2047374 ctxswc/S
 --- Result: SUCCESS
 ----------------------------------------------------------------------------
 --- Test Case 11.2 (Benchmark, messages #2)
@@ -105,7 +105,7 @@
 --- Result: SUCCESS
 ----------------------------------------------------------------------------
 --- Test Case 11.4 (Benchmark, context switch)
---- Score : 4951264 ctxswc/S
+--- Score : 5008664 ctxswc/S
 --- Result: SUCCESS
 ----------------------------------------------------------------------------
 --- Test Case 11.5 (Benchmark, threads, full cycle)
@@ -113,7 +113,7 @@
 --- Result: SUCCESS
 ----------------------------------------------------------------------------
 --- Test Case 11.6 (Benchmark, threads, create only)
---- Score : 892556 threads/S
+--- Score : 896259 threads/S
 --- Result: SUCCESS
 ----------------------------------------------------------------------------
 --- Test Case 11.7 (Benchmark, mass reschedule, 5 threads)
diff --git a/os/rt/src/chschd.c b/os/rt/src/chschd.c
index 3d7d04b58..ace722d7b 100644
--- a/os/rt/src/chschd.c
+++ b/os/rt/src/chschd.c
@@ -406,6 +406,7 @@ msg_t chSchGoSleepTimeoutS(tstate_t newstate, systime_t time) {
  * @sclass
  */
 void chSchWakeupS(thread_t *ntp, msg_t msg) {
+  thread_t *otp = currp;
 
   chDbgCheckClassS();
 
@@ -421,12 +422,12 @@ void chSchWakeupS(thread_t *ntp, msg_t msg) {
      one then it is just inserted in the ready list else it made
      running immediately and the invoking thread goes in the ready
      list instead.*/
-  if (ntp->prio <= currp->prio) {
+  if (ntp->prio <= otp->prio) {
     (void) chSchReadyI(ntp);
   }
   else {
-    thread_t *otp = chSchReadyI(currp);
     currp = ntp;
+    otp = chSchReadyI(otp);
     if (otp->prio == IDLEPRIO) {
       CH_CFG_IDLE_LEAVE_HOOK();
     }