After new idle_proc() committed to the tree, my laptop
become very hot as if under heavy cpu load even when
cpu is actually 95%~ idle.

If I understand collectly, idle_proc() doesn't contain
any HLT instruction in i386 UP case which former
idle() had. 

Attached patch adds back the HLT in i386 UP case and
seems to fix my problem, although I'm totally
unfamiliar with SMP nor alpha.

Other than that, current runs quite fine in normal
operation here.


Takaya Ogawa


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