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From: Dietmar Eggemann <dietmar.eggemann@arm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org,
	Morten Rasmussen <morten.rasmussen@arm.com>
Subject: [PATCH 6/7] sched/fair: Reorder code in update_sd_lb_stats()
Date: Fri, 29 Apr 2016 20:32:43 +0100	[thread overview]
Message-ID: <1461958364-675-7-git-send-email-dietmar.eggemann@arm.com> (raw)
In-Reply-To: <1461958364-675-1-git-send-email-dietmar.eggemann@arm.com>

Do the update of total load and total capacity of sched_domain
statistics before detecting if it is the local group. This and the
inclusion of sg=sg->next into the condition of the do...while loop
makes the code easier to read.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
---
 kernel/sched/fair.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index e68b9eb5cb97..58da724b6ca4 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6801,8 +6801,12 @@ static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sd
 		update_sg_lb_stats(env, sg, load_idx, local_group, sgs,
 						&overload);
 
+		/* Update sd_lb_stats */
+		sds->total_load += sgs->group_load;
+		sds->total_capacity += sgs->group_capacity;
+
 		if (local_group)
-			goto next_group;
+			continue;
 
 		/*
 		 * In case the child domain prefers tasks go to siblings
@@ -6826,13 +6830,7 @@ static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sd
 			sds->busiest_stat = *sgs;
 		}
 
-next_group:
-		/* Now, start updating sd_lb_stats */
-		sds->total_load += sgs->group_load;
-		sds->total_capacity += sgs->group_capacity;
-
-		sg = sg->next;
-	} while (sg != env->sd->groups);
+	} while (sg = sg->next, sg != env->sd->groups);
 
 	if (env->sd->flags & SD_NUMA)
 		env->fbq_type = fbq_classify_group(&sds->busiest_stat);
-- 
1.9.1

  parent reply	other threads:[~2016-04-29 19:33 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-29 19:32 [PATCH 0/7] sched/fair: fixes and cleanups Dietmar Eggemann
2016-04-29 19:32 ` [PATCH 1/7] sched/fair: Remove remaining power aware scheduling comments Dietmar Eggemann
2016-05-05  9:42   ` [tip:sched/core] sched/fair: Remove stale " tip-bot for Dietmar Eggemann
2016-04-29 19:32 ` [PATCH 2/7] sched/fair: Fix comment in calculate_imbalance() Dietmar Eggemann
2016-05-05  9:42   ` [tip:sched/core] " tip-bot for Dietmar Eggemann
2016-04-29 19:32 ` [PATCH 3/7] sched/fair: Correct unit of load_above_capacity Dietmar Eggemann
2016-05-03 10:52   ` Peter Zijlstra
2016-05-03 14:56     ` Morten Rasmussen
2016-05-12 10:31   ` [tip:sched/core] " tip-bot for Morten Rasmussen
2016-05-12 21:48     ` Yuyang Du
2016-05-13  8:22       ` Vincent Guittot
2016-05-19 15:36         ` Morten Rasmussen
2016-05-20  8:17           ` Vincent Guittot
2016-05-23 20:24           ` Yuyang Du
2016-05-30 22:35             ` Yuyang Du
2016-04-29 19:32 ` [PATCH 4/7] sched/fair: Clean up the logic in fix_small_imbalance() Dietmar Eggemann
2016-05-03 10:12   ` Peter Zijlstra
2016-05-03 16:53     ` Dietmar Eggemann
2016-04-29 19:32 ` [PATCH 5/7] sched/fair: Remove cpu_avg_load_per_task() Dietmar Eggemann
2016-04-29 19:32 ` Dietmar Eggemann [this message]
2016-04-29 19:32 ` [PATCH 7/7] sched/fair: Use group_cfs_rq(se) instead of se->my_q Dietmar Eggemann

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