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From: Venkatesh Pallipadi <venki@google.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Gautham R Shenoy <ego@in.ibm.com>,
	Joel Schopp <jschopp@austin.ibm.com>,
	Suresh B Siddha <suresh.b.siddha@intel.com>,
	Venkatesh Pallipadi <venki@google.com>
Subject: Re: [PATCH] sched: Call update_group_power only for local_group
Date: Fri,  2 Jul 2010 09:56:39 -0700	[thread overview]
Message-ID: <1278089799-11949-1-git-send-email-venki@google.com> (raw)
In-Reply-To: <1278088816.1917.279.camel@laptop>

My fault. I completely missed that code path, assuming this_cpu in
load_balance means this_cpu :(

How about the change below instead?

Signed-off-by: Venkatesh Pallipadi <venki@google.com>
---
 kernel/sched_fair.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index a878b53..97f4534 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -2406,8 +2406,6 @@ static inline void update_sg_lb_stats(struct sched_domain *sd,
 		return;
 	}
 
-	update_group_power(sd, this_cpu);
-
 	/* Adjust by relative CPU power of the group */
 	sgs->avg_load = (sgs->group_load * SCHED_LOAD_SCALE) / group->cpu_power;
 
@@ -2456,6 +2454,8 @@ static inline void update_sd_lb_stats(struct sched_domain *sd, int this_cpu,
 	init_sd_power_savings_stats(sd, sds, idle);
 	load_idx = get_sd_load_idx(sd, idle);
 
+	update_group_power(sd, this_cpu);
+
 	do {
 		int local_group;
 
-- 
1.7.1


  reply	other threads:[~2010-07-02 16:57 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-01 23:12 Venkatesh Pallipadi
2010-07-02  8:05 ` Peter Zijlstra
2010-07-02 16:20   ` Venkatesh Pallipadi
2010-07-02 16:40     ` Peter Zijlstra
2010-07-02 16:56       ` Venkatesh Pallipadi [this message]
2010-07-02 17:31         ` Peter Zijlstra
2010-07-08 14:12         ` Peter Zijlstra
2010-07-08 17:45           ` Suresh Siddha
2010-07-08 17:49             ` Peter Zijlstra
2010-07-08 17:50               ` Suresh Siddha
2010-07-08 17:55                 ` Peter Zijlstra
2010-07-08 18:16             ` Peter Zijlstra
2010-07-08 21:53               ` Suresh Siddha
2010-07-09 13:17                 ` Peter Zijlstra
2010-07-17 11:12                 ` [tip:sched/core] sched: Update rq->clock for nohz balanced cpus tip-bot for Suresh Siddha
2010-07-12 17:11               ` [PATCH] sched: Call update_group_power only for local_group Venkatesh Pallipadi
2010-07-17 11:12               ` [tip:sched/core] sched: Reduce update_group_power() calls tip-bot for Peter Zijlstra

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