runtime: fix scheduling bug - world wasn't stopping

Fixes #886.

R=r
CC=golang-dev
https://golang.org/cl/1667051

diff --git a/src/pkg/runtime/proc.c b/src/pkg/runtime/proc.c
index a587a7fd43120ea2966368acd3ac8ecfdd5497cd..2abb28307e317464cdb8c0e286b78b838a98d574 100644 (file)
--- a/src/pkg/runtime/proc.c
+++ b/src/pkg/runtime/proc.c
@@ -168,7 +168,7 @@ gput(G *g)
        M *m;
 
        // If g is wired, hand it off directly.
-       if((m = g->lockedm) != nil) {
+       if(sched.mcpu < sched.mcpumax && (m = g->lockedm) != nil) {
                mnextg(m, g);
                return;
        }