sched: fix calc_delta_mine()

lw->weight can be 0 for a short time during bootup.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

diff --git a/kernel/sched.c b/kernel/sched.c
index 3a4ba3dc0f498fe71d04d7b33b8cfe086695d4a5..6b06f23261c0c37e5e616319bc0c76deed64affa 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1084,7 +1084,7 @@ calc_delta_mine(unsigned long delta_exec, unsigned long weight,
        u64 tmp;
 
        if (unlikely(!lw->inv_weight))
-               lw->inv_weight = (WMULT_CONST - lw->weight/2) / lw->weight + 1;
+               lw->inv_weight = (WMULT_CONST-lw->weight/2) / (lw->weight+1);
 
        tmp = (u64)delta_exec * weight;
        /*