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- Fix non-SMP build by encapsulating idle spin logic in a macro.

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Pointy hat to:	me
This commit is contained in:
Jeff Roberson 2009-04-29 23:04:31 +00:00
parent fe2f3c651f
commit 09c8a4cc21
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=191676
1 changed files with 8 additions and 2 deletions
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10
sys/kern/sched_ule.c
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@ -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;