Re: [PATCH] s390 (9/9): no timer interrupts in idle.

From: Martin Schwidefsky
Date: Thu Apr 22 2004 - 06:11:04 EST

> why? Most hardware have an alternative time source for such time stamps.
> Timer events *won't* be delivered too late, simply *because* the timer
> "don't bother checking back for X amount of time", so when that time has
> expired (eg the delay) then the timer comparison tells the kernel "ok
> one is due now".

Huh? You lost me there. The HZ timer is the interrupt that will trigger the
execution of a timer event. If you say "don't bother checking back for X
amount of time" the cpu stays in idle doing nothing. You won't get control
to execute the timer event.

blue skies,

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