redo the performance throttling in the kernel.

introduce a new sysctl, hw.perfpolicy, that governs the policy.
when set to anything other than manual, hw.setperf then becomes read only.
phessler was heading in this direction, but this is slightly different. :)

1 files changed, 10 insertions, 1 deletions

diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index e9e5827fb4b..4d5b672a619 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: init_main.c,v 1.221 2014/10/13 22:42:22 deraadt Exp $	*/
+/*	$OpenBSD: init_main.c,v 1.222 2014/10/17 01:51:39 tedu Exp $	*/
 /*	$NetBSD: init_main.c,v 1.84.4.1 1996/06/02 09:08:06 mrg Exp $	*/
 
 /*
@@ -116,6 +116,11 @@ struct	sigacts sigacts0;
 struct	process *initprocess;
 struct	proc *reaperproc;
 
+#ifndef SMALL_KERNEL
+extern struct timeout setperf_to;
+void setperf_auto(void *);
+#endif
+
 int	cmask = CMASK;
 extern	struct user *proc0paddr;
 
@@ -545,6 +550,10 @@ main(void *framep)
 	start_init_exec = 1;
 	wakeup((void *)&start_init_exec);
 
+#ifndef SMALL_KERNEL
+	timeout_set(&setperf_to, setperf_auto, NULL);
+#endif
+
         /*
          * proc0: nothing to do, back to sleep
          */