- 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/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c
index 45e57de..d6ed3c3 100644
--- a/sys/ia64/ia64/machdep.c
+++ b/sys/ia64/ia64/machdep.c
@@ -335,7 +335,7 @@ cpu_halt()
 }
 
 static void
-cpu_idle_default(void)
+cpu_idle_default(int busy)
 {
 	struct ia64_pal_result res;
 
@@ -348,6 +348,13 @@ cpu_idle()
 	(*cpu_idle_hook)();
 }
 
+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;