svn commit: r244148 - projects/calloutng/sys/kern

[Davide Italiano]

Author: davide
Date: Wed Dec 12 12:14:05 2012
New Revision: 244148
URL: http://svnweb.freebsd.org/changeset/base/244148

Log:
  FREQ2BT is an heavy 64-bit division. There's no need to compute that
  everytime we enter in callout_reset_on(), in particular if the input is
  a costant and precalculated value.

Modified:
  projects/calloutng/sys/kern/kern_timeout.c

Modified: projects/calloutng/sys/kern/kern_timeout.c
==============================================================================
--- projects/calloutng/sys/kern/kern_timeout.c	Wed Dec 12 12:02:58 2012	(r244147)
+++ projects/calloutng/sys/kern/kern_timeout.c	Wed Dec 12 12:14:05 2012	(r244148)
@@ -933,8 +933,7 @@ _callout_reset_on(struct callout *c, str
 
 	cancelled = 0;
 	if (bt == NULL) {
-		FREQ2BT(hz, &to_bt);
-		pr = to_bt;
+		pr = to_bt = tick_bt;
 		getbinuptime(&now);
 		if (to_ticks > 0)
 			bintime_mul(&to_bt, to_ticks);