sched/deadline: Don't balance during wakeup if wakee is pinned

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Use nr_cpus_allowed to bail from select_task_rq() when only one cpu
can be used, and saves some cycles for pinned tasks.

Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1413253360-5318-2-git-send-email-wanpeng.li@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Wanpeng Li 2014-10-14 10:22:40 +08:00 • committed by Ingo Molnar

parent 1d7e974cbf

commit f4e9d94a5b

1 changed files with 3 additions and 0 deletions

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kernel/sched/deadline.c

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