- 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/sun4v/sun4v/machdep.c b/sys/sun4v/sun4v/machdep.c
index 1d0bf66..6281f00 100644
--- a/sys/sun4v/sun4v/machdep.c
+++ b/sys/sun4v/sun4v/machdep.c
@@ -819,7 +819,7 @@ sparc64_shutdown_final(void *dummy, int howto)
 }
 
 void
-cpu_idle(void)
+cpu_idle(int busy)
 {
 
 	if (rdpr(pil) != 0) 
@@ -832,6 +832,13 @@ cpu_idle(void)
 }
 
 int
+cpu_idle_wakeup(int cpu)
+{
+
+	return (0);
+}
+
+int
 ptrace_set_pc(struct thread *td, u_long addr)
 {