From: tip-bot for Peter Zijlstra <a.p.zijlstra@chello.nl>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com,
a.p.zijlstra@chello.nl, pjt@google.com, tglx@linutronix.de,
mingo@elte.hu
Subject: [tip:sched/core] sched: Avoid expensive initial update_cfs_load(), on UP too
Date: Thu, 27 Jan 2011 11:58:32 GMT [thread overview]
Message-ID: <tip-6ea72f12069306b235151c5b05ac0cca7e1dedfa@git.kernel.org> (raw)
In-Reply-To: <20110122044852.102126037@google.com>
Commit-ID: 6ea72f12069306b235151c5b05ac0cca7e1dedfa
Gitweb: http://git.kernel.org/tip/6ea72f12069306b235151c5b05ac0cca7e1dedfa
Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
AuthorDate: Wed, 26 Jan 2011 13:36:03 +0100
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 27 Jan 2011 12:48:14 +0100
sched: Avoid expensive initial update_cfs_load(), on UP too
Fix the build on UP.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Turner <pjt@google.com>
LKML-Reference: <20110122044852.102126037@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/sched.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 78fa753..477e1bc 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7922,8 +7922,10 @@ static void init_cfs_rq(struct cfs_rq *cfs_rq, struct rq *rq)
#ifdef CONFIG_FAIR_GROUP_SCHED
cfs_rq->rq = rq;
/* allow initial update_cfs_load() to truncate */
+#ifdef CONFIG_SMP
cfs_rq->load_stamp = 1;
#endif
+#endif
cfs_rq->min_vruntime = (u64)(-(1LL << 20));
}
next prev parent reply other threads:[~2011-01-27 11:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-22 4:44 [patch 0/5] scheduler fixlets Paul Turner
2011-01-22 4:44 ` [patch 1/5] sched: fix sign under-flows in wake_affine Paul Turner
2011-01-26 12:09 ` [tip:sched/core] sched: Fix " tip-bot for Paul Turner
2011-01-22 4:45 ` [patch 2/5] sched: (cleanup) remove redundant cfs_rq checks Paul Turner
2011-01-26 12:10 ` [tip:sched/core] sched: Fix/remove " tip-bot for Paul Turner
2011-01-22 4:45 ` [patch 3/5] sched: simplify update_cfs_shares parameters Paul Turner
2011-01-26 12:11 ` [tip:sched/core] sched: Simplify " tip-bot for Paul Turner
2011-01-22 4:45 ` [patch 4/5] sched: use rq->clock_task instead of rq->clock for maintaining load averages Paul Turner
2011-01-26 12:10 ` [tip:sched/core] sched: Use rq->clock_task instead of rq->clock for correctly " tip-bot for Paul Turner
2011-01-22 4:45 ` [patch 5/5] sched: avoid expensive initial update_cfs_load() Paul Turner
2011-01-26 12:11 ` [tip:sched/core] sched: Avoid " tip-bot for Paul Turner
2011-01-26 12:36 ` Peter Zijlstra
2011-01-26 12:45 ` [tip:sched/core] sched: Avoid expensive initial update_cfs_load(), on UP too tip-bot for Peter Zijlstra
2011-01-27 11:58 ` tip-bot for Peter Zijlstra [this message]
2011-01-24 10:17 ` [patch 0/5] scheduler fixlets Peter Zijlstra
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