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Lines 908-922
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{ |
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{ |
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int moved; |
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int moved; |
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int cpu; |
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int cpu; |
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913 |
/* |
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* Don't bother to lock if balancing doesn't make sense. |
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*/ |
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if (high->tdq_load <= low->tdq_load) |
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return(0) |
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tdq_lock_pair(high, low); |
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tdq_lock_pair(high, low); |
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moved = 0; |
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moved = 0; |
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/* |
922 |
/* |
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* Determine what the imbalance is and then adjust that to how many |
923 |
* Move one thread from high to low if high has atleast 1 |
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* threads we actually have to give up (transferable). |
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* transferrable thread. |
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*/ |
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*/ |
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if (high->tdq_transferable != 0 && high->tdq_load > low->tdq_load && |
926 |
if (high->tdq_transferable == 0 && (moved = tdq_move(high, low)) > 0) { |
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(moved = tdq_move(high, low)) > 0) { |
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/* |
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/* |
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* In case the target isn't the current cpu IPI it to force a |
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* In case the target isn't the current cpu IPI it to force a |
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* reschedule with the new workload. |
929 |
* reschedule with the new workload. |