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    Subject[111/115] sched: Fix volanomark performance regression
    2.6.32-longterm review patch.  If anyone has any objections, please let us know.

    ------------------

    Commit: b5482cfa1c95a188b3054fa33274806add91bbe5 upstream

    Commit fab4762 triggers excessive idle balancing, causing a ~30% loss in
    volanomark throughput. Remove idle balancing throttle reset.

    Originally-by: Alex Shi <alex.shi@intel.com>
    Signed-off-by: Mike Galbraith <efault@gmx.de>
    Acked-by: Nikhil Rao <ncrao@google.com>
    Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
    LKML-Reference: <1289928732.5169.211.camel@maggy.simson.net>
    Signed-off-by: Ingo Molnar <mingo@elte.hu>
    Signed-off-by: Mike Galbraith <efault@gmx.de>
    Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    ---
    kernel/sched.c | 4 ----
    1 file changed, 4 deletions(-)

    --- a/kernel/sched.c
    +++ b/kernel/sched.c
    @@ -3326,10 +3326,6 @@ static void pull_task(struct rq *src_rq,
    set_task_cpu(p, this_cpu);
    activate_task(this_rq, p, 0);
    check_preempt_curr(this_rq, p, 0);
    -
    - /* re-arm NEWIDLE balancing when moving tasks */
    - src_rq->avg_idle = this_rq->avg_idle = 2*sysctl_sched_migration_cost;
    - this_rq->idle_stamp = 0;
    }

    /*



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