Author: jeff
Date: Wed Apr 29 23:04:31 2009
New Revision: 191676
URL: http://svn.freebsd.org/changeset/base/191676
Log:
- Fix non-SMP build by encapsulating idle spin logic in a macro.
Pointy hat to: me
Modified:
head/sys/kern/sched_ule.c
Modified: head/sys/kern/sched_ule.c
==============================================================================
--- head/sys/kern/sched_ule.c Wed Apr 29 21:50:13 2009 (r191675)
+++ head/sys/kern/sched_ule.c Wed Apr 29 23:04:31 2009 (r191676)
@@ -2516,6 +2516,13 @@ sched_sizeof_thread(void)
return (sizeof(struct thread) + sizeof(struct td_sched));
}
+#ifdef SMP
+#define TDQ_IDLESPIN(tdq)
\
+ ((tdq)->tdq_cg != NULL && ((tdq)->tdq_cg->cg_flags & CG_FLAG_THREAD) == 0)
+#else
+#define TDQ_IDLESPIN(tdq) 1
+#endif
+
/*
* The actual idle process.
*/
@@ -2543,8 +2550,7 @@ sched_idletd(void *dummy)
* loops while on SMT machines as this simply steals
* cycles from cores doing useful work.
*/
- if ((tdq->tdq_cg->cg_flags & CG_FLAG_THREAD) == 0 &&
- switchcnt > sched_idlespinthresh) {
+ if (TDQ_IDLESPIN(tdq) && switchcnt > sched_idlespinthresh) {
for (i = 0; i < sched_idlespins; i++) {
if (tdq->tdq_load)
break;
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