[理工] OS同步 disable interrupt 問題
如這題
我知道disable interrupt 不適合用在多處理器上
但是A與B選項應該都不適合吧
A)若只disable first CPU,這樣第二顆CPU不是也可以去搶資源?
B)若讓其他cpu disable會造成效能降低
請問大大們有更好的解釋嗎?
謝謝!
http://i.imgur.com/zlV97P6.jpg
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