sched: move_task_off_dead_cpu(): Remove retry logic

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The previous patch preserved the retry logic, but it looks unneeded.

__migrate_task() can only fail if we raced with migration after we dropped
the lock, but in this case the caller of set_cpus_allowed/etc must initiate
migration itself if ->on_rq == T.

We already fixed p->cpus_allowed, the changes in active/online masks must
be visible to racer, it should migrate the task to online cpu correctly.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100315091014.GA9138@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Oleg Nesterov 2010-03-15 10:10:14 +01:00 • committed by Ingo Molnar

parent 1445c08d06

commit c1804d547d

1 changed files with 6 additions and 7 deletions

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kernel/sched.c

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