- Add an integer argument to idle to indicate how likely we are to wake

   from idle over the next tick.
 - Add a new MD routine, cpu_wake_idle() to wakeup idle threads who are
   suspended in cpu specific states.  This function can fail and cause the
   scheduler to fall back to another mechanism (ipi).
 - Implement support for mwait in cpu_idle() on i386/amd64 machines that
   support it.  mwait is a higher performance way to synchronize cpus
   as compared to hlt & ipis.
 - Allow selecting the idle routine by name via sysctl machdep.idle.  This
   replaces machdep.cpu_idle_hlt.  Only idle routines supported by the
   current machine are permitted.

Sponsored by:	Nokia

1 files changed, 8 insertions, 1 deletions

diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c
index 942b804..b77f67e 100644
--- a/sys/pc98/pc98/machdep.c
+++ b/sys/pc98/pc98/machdep.c
@@ -1133,7 +1133,7 @@ cpu_idle_default(void)
  * is a runnable process.
  */
 void
-cpu_idle(void)
+cpu_idle(int busy)
 {
 
 #ifdef SMP
@@ -1150,6 +1150,13 @@ cpu_idle(void)
 	}
 }
 
+int
+cpu_idle_wakeup(int cpu)
+{
+
+	return (0);
+}
+
 /* Other subsystems (e.g., ACPI) can hook this later. */
 void (*cpu_idle_hook)(void) = cpu_idle_default;