linux-kernel - Re: Problem: CPU sleep when calling a function in another object for the first time.

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Message-ID: <47190C6C.9020709@cfl.rr.com>
Date:	Fri, 19 Oct 2007 15:58:36 -0400
From:	Phillip Susi <psusi@....rr.com>
To:	John Marconi <john.marconi@...tar.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Problem:  CPU sleep when calling a function in another object
 for the first time.

John Marconi wrote:
> I have added a kernel profiler to the timer interrupt of this CPU - and
> find that during this 40ms period, the CPU is in r4k_wait - which looks
> like cpu_idle is running.  It almost seems like file Y is being loaded
> into memory to be used.

That is exactly what is happening.  Pages in the code segment are only 
loaded on demand.

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