Messages in this thread Patch in this message | | | Date | Thu, 2 Oct 2014 22:28:07 -0700 | From | tip-bot for Kirill Tkhai <> | Subject | [tip:sched/core] sched/fair: Delete resched_cpu() from idle_balance() |
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Commit-ID: 10a12983b3d437a6998b3845870e52c1c752c101 Gitweb: http://git.kernel.org/tip/10a12983b3d437a6998b3845870e52c1c752c101 Author: Kirill Tkhai <ktkhai@parallels.com> AuthorDate: Wed, 1 Oct 2014 01:04:44 +0400 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Fri, 3 Oct 2014 05:46:56 +0200
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> --- kernel/sched/fair.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index dfdcbfd..bd61cff 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6701,12 +6701,6 @@ more_balance: 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;
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