Re: Laptop getting hot

[YONETANI Tomokazu <qhwt+dragonfly-kernel@xxxxxxxxxx>]

On Mon, Dec 29, 2003 at 04:04:40PM -0800, Matthew Dillon wrote:
> 
> :
> :Speaking of 'hlt' instruction, if I revert the revision 1.22 of
> :sys/kern/lwkt_thread.c, the temperature stays low.
> 
>     1.22?  That's 24 versions down from the current version.  Your kernel
>     shouldn't compile with lwkt_thread.c out of sync that much :-).

No, I didn't say that I reverted to 1.22. What I meant was
`undo the change made in revision 1.22', or surround it by #ifdef SMP:

Index: lwkt_thread.c
===================================================================
RCS file: /home/source/dragonfly/cvs/src/sys/kern/lwkt_thread.c,v
retrieving revision 1.46
diff -u -r1.46 lwkt_thread.c
--- lwkt_thread.c	4 Dec 2003 20:09:33 -0000	1.46
+++ lwkt_thread.c	30 Dec 2003 02:35:47 -0000
@@ -509,8 +509,10 @@
 	     * pending interrupts, spin in idle if so.
 	     */
 	    ntd = &gd->gd_idlethread;
+#if SMP
 	    if (gd->gd_reqflags)
 		ntd->td_flags |= TDF_IDLE_NOHLT;
+#endif
 	}
     }
     KASSERT(ntd->td_pri >= TDPRI_CRIT,


Obviously this doesn't help SMP or HTT kernel.