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    Subject[tip:sched/core] sched: Avoid expensive initial update_cfs_load(), on UP too
    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));
    }


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