From: Andy Bavier <acb@cs.princeton.edu>
Date: Thu, 24 Feb 2005 14:34:38 +0000 (+0000)
Subject: Fix share initialization problem [PL #4227]
X-Git-Tag: planetlab-3_0-rc13~19
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=179ecd8c55ea7a07a677bc4223eaeb5b667a0d73;p=linux-2.6.git

Fix share initialization problem [PL #4227]
---

diff --git a/kernel/ckrm/ckrm_cpu_monitor.c b/kernel/ckrm/ckrm_cpu_monitor.c
index d8c199a20..90ab2586c 100644
--- a/kernel/ckrm/ckrm_cpu_monitor.c
+++ b/kernel/ckrm/ckrm_cpu_monitor.c
@@ -838,8 +838,13 @@ static void adjust_lrq_weight(struct ckrm_cpu_class *clsptr, int cpu_online)
 		total_pressure += lrq->lrq_load;
 	}
 
+#define FIX_SHARES 
+#ifdef FIX_SHARES
+#warning "ACB: fix share initialization problem [PL #4227]"
+#else
 	if (! total_pressure)
 		return;
+#endif
 	
 	class_weight = cpu_class_weight(clsptr) * cpu_online;
 
@@ -852,6 +857,10 @@ static void adjust_lrq_weight(struct ckrm_cpu_class *clsptr, int cpu_online)
 			/*give idle class a high share to boost interactiveness */
 			lw = cpu_class_weight(clsptr); 
 		else {
+#ifdef FIX_SHARES
+		        if (! total_pressure)
+			        return;
+#endif			
 			lw = lrq->lrq_load * class_weight;
 			do_div(lw,total_pressure);
 			if (!lw)