linux-kernel - [PATCH v1 12/19] sched: Update update_sd_lb

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Message-Id: <1304299157-25769-13-git-send-email-ncrao@google.com>
Date:	Sun,  1 May 2011 18:19:10 -0700
From:	Nikhil Rao <ncrao@...gle.com>
To:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Mike Galbraith <efault@....de>
Cc:	linux-kernel@...r.kernel.org,
	"Nikunj A. Dadhania" <nikunj@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Stephan Barwolf <stephan.baerwolf@...ilmenau.de>,
	Nikhil Rao <ncrao@...gle.com>
Subject: [PATCH v1 12/19] sched: Update update_sd_lb_stats() to use u64

Update update_sd_lb_stats() and helper functions to use u64/s64 for weight
calculations.

Signed-off-by: Nikhil Rao <ncrao@...gle.com>
---
 kernel/sched_fair.c |   22 +++++++++++-----------
 1 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 992b9f4..152b472 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -2308,23 +2308,23 @@ static int move_tasks(struct rq *this_rq, int this_cpu, struct rq *busiest,
  * 		during load balancing.
  */
 struct sd_lb_stats {
-	struct sched_group *busiest; /* Busiest group in this sd */
-	struct sched_group *this;  /* Local group in this sd */
-	unsigned long total_load;  /* Total load of all groups in sd */
-	unsigned long total_pwr;   /*	Total power of all groups in sd */
-	unsigned long avg_load;	   /* Average load across all groups in sd */
+	struct sched_group *busiest;	/* Busiest group in this sd */
+	struct sched_group *this;	/* Local group in this sd */
+	u64 total_load;			/* Total load of all groups in sd */
+	unsigned long total_pwr;	/* Total power of all groups in sd */
+	u64 avg_load;			/* Avg load across all groups in sd */
 
 	/** Statistics of this group */
-	unsigned long this_load;
-	unsigned long this_load_per_task;
+	u64 this_load;
+	u64 this_load_per_task;
 	unsigned long this_nr_running;
 	unsigned long this_has_capacity;
 	unsigned int  this_idle_cpus;
 
 	/* Statistics of the busiest group */
 	unsigned int  busiest_idle_cpus;
-	unsigned long max_load;
-	unsigned long busiest_load_per_task;
+	u64 max_load;
+	u64 busiest_load_per_task;
 	unsigned long busiest_nr_running;
 	unsigned long busiest_group_capacity;
 	unsigned long busiest_has_capacity;
@@ -2461,8 +2461,8 @@ static inline void update_sd_power_savings_stats(struct sched_group *group,
 	     group_first_cpu(group) > group_first_cpu(sds->group_min))) {
 		sds->group_min = group;
 		sds->min_nr_running = sgs->sum_nr_running;
-		sds->min_load_per_task = sgs->sum_weighted_load /
-						sgs->sum_nr_running;
+		sds->min_load_per_task = div_u64(sgs->sum_weighted_load,
+						 sgs->sum_nr_running);
 	}
 
 	/*
-- 
1.7.3.1

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