sched: Remove unused struct sched_group_capacity::capacity_orig

The 'struct sched_group_capacity::capacity_orig' field is no longer used
in the scheduler so we can remove it.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Morten.Rasmussen@arm.com
Cc: dietmar.eggemann@arm.com
Cc: efault@gmx.de
Cc: kamalesh@linux.vnet.ibm.com
Cc: linaro-kernel@lists.linaro.org
Cc: nicolas.pitre@linaro.org
Cc: preeti@linux.vnet.ibm.com
Cc: riel@redhat.com
Link: http://lkml.kernel.org/r/1425378903-5349-1-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 7e13dd0..d36f8d2 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6073,7 +6073,6 @@
 	capacity >>= SCHED_CAPACITY_SHIFT;
 
 	cpu_rq(cpu)->cpu_capacity_orig = capacity;
-	sdg->sgc->capacity_orig = capacity;
 
 	capacity *= scale_rt_capacity(cpu);
 	capacity >>= SCHED_CAPACITY_SHIFT;
@@ -6089,7 +6088,7 @@
 {
 	struct sched_domain *child = sd->child;
 	struct sched_group *group, *sdg = sd->groups;
-	unsigned long capacity, capacity_orig;
+	unsigned long capacity;
 	unsigned long interval;
 
 	interval = msecs_to_jiffies(sd->balance_interval);
@@ -6101,7 +6100,7 @@
 		return;
 	}
 
-	capacity_orig = capacity = 0;
+	capacity = 0;
 
 	if (child->flags & SD_OVERLAP) {
 		/*
@@ -6121,19 +6120,15 @@
 			 * Use capacity_of(), which is set irrespective of domains
 			 * in update_cpu_capacity().
 			 *
-			 * This avoids capacity/capacity_orig from being 0 and
+			 * This avoids capacity from being 0 and
 			 * causing divide-by-zero issues on boot.
-			 *
-			 * Runtime updates will correct capacity_orig.
 			 */
 			if (unlikely(!rq->sd)) {
-				capacity_orig += capacity_orig_of(cpu);
 				capacity += capacity_of(cpu);
 				continue;
 			}
 
 			sgc = rq->sd->groups->sgc;
-			capacity_orig += sgc->capacity_orig;
 			capacity += sgc->capacity;
 		}
 	} else  {
@@ -6144,13 +6139,11 @@
 
 		group = child->groups;
 		do {
-			capacity_orig += group->sgc->capacity_orig;
 			capacity += group->sgc->capacity;
 			group = group->next;
 		} while (group != child->groups);
 	}
 
-	sdg->sgc->capacity_orig = capacity_orig;
 	sdg->sgc->capacity = capacity;
 }