[PATCH] reduce wakeups from smart scheduler

[Keith Packard]

On Wed, 2007-11-07 at 16:08 -0500, Kristian Høgsberg wrote:

> it dies from an unhandled SIGALARM shortly after startup.


commit 0e9ef65fa583bf2393dd0fda82df6f092387b425
Author: Keith Packard <keithp at koto.keithp.com>
Date:   Wed Nov 7 16:33:10 2007 -0800

    Don't frob timers unless SmartSchedule is running

diff --git a/os/utils.c b/os/utils.c
index 3228146..ae96a41 100644
--- a/os/utils.c
+++ b/os/utils.c
@@ -1520,6 +1520,8 @@ SmartScheduleStopTimer (void)
 #ifdef SMART_SCHEDULE_POSSIBLE
     struct itimerval   timer;
     
+    if (SmartScheduleDisable)
+       return;
     timer.it_interval.tv_sec = 0;
     timer.it_interval.tv_usec = 0;
     timer.it_value.tv_sec = 0;
@@ -1534,6 +1536,8 @@ SmartScheduleStartTimer (void)
 #ifdef SMART_SCHEDULE_POSSIBLE
     struct itimerval   timer;
     
+    if (SmartScheduleDisable)
+       return;
     timer.it_interval.tv_sec = 0;
     timer.it_interval.tv_usec = SmartScheduleInterval * 1000;
     timer.it_value.tv_sec = 0;

-- 
keith.packard at intel.com
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