[PATCH 8/13] use cpu_relax() in busy loop

[Chris Wright]

Replace busy loop rep_nop() with cpu_relax().

This is bordering on a gratuitous change given the i386 def'n of
cpu_relax().  But I was fixing up other busy loops, and my grep found
this one.

===== arch/i386/kernel/smpboot.c 1.64 vs edited =====
--- 1.64/arch/i386/kernel/smpboot.c	Mon Aug 18 19:46:23 2003
+++ edited/arch/i386/kernel/smpboot.c	Thu Sep 18 10:07:18 2003
@@ -378,7 +378,7 @@
 		 */
 		if (cpu_isset(cpuid, cpu_callout_map))
 			break;
-		rep_nop();
+		cpu_relax();
 	}
 
 	if (!time_before(jiffies, timeout)) {
-
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