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sched/fair: Delete resched_cpu() from idle_balance() 

We already reschedule env.dst_cpu in attach_tasks()->check_preempt_curr()
if this is necessary.

Furthermore, a higher priority class task may be current on dest rq,
we shouldn't disturb it.

Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
Cc: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140930210441.5258.55054.stgit@localhost
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Kirill Tkhai 2014-10-01 01:04:44 +04:00 committed by Ingo Molnar
parent 347abad981
commit 10a12983b3
1 changed files with 0 additions and 6 deletions
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6
kernel/sched/fair.c
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@ -6701,12 +6701,6 @@ static int load_balance(int this_cpu, struct rq *this_rq,
local_irq_restore(flags);
/*
* some other cpu did the load balance for us.
*/
if (cur_ld_moved && env.dst_cpu != smp_processor_id())
resched_cpu(env.dst_cpu);
if (env.flags & LBF_NEED_BREAK) {
env.flags &= ~LBF_NEED_BREAK;
goto more_balance;