linux-kernel - Re: 2.6.20-rc6-mm3

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Date:	Tue, 06 Feb 2007 15:22:57 -0800
From:	Daniel Walker <dwalker@...sta.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.20-rc6-mm3

On Wed, 2007-02-07 at 00:14 +0100, Ingo Molnar wrote:
> * Daniel Walker <dwalker@...sta.com> wrote:
> 
> > On Tue, 2007-02-06 at 23:56 +0100, Ingo Molnar wrote:
> > 
> > > changing the current 'timer' entry (which is line 2 of /proc/interrupts) 
> > > to be 'listed as lapic-timer' and to 'replace it with the count from 
> > > LOC' is faking a count in a line where nothing like that should be.
> > 
> > This point is getting irrelevant ..
> 
> it is very much relevant: faking a count is something we /dont/ want to 
> do with /proc/interrupts, for (very) basic compatibility, simplicity and 
> policy reasons. And that is precisely what your suggestion was to 
> 'solve' this supposed 'problem' - so it's very much relevant.

As I said you are misunderstanding me .. which is why this is not
relevant any more .. 

Please move on .

> > > the kernel simply displays reality: IRQ#0 isnt increasing because 
> > > it's not used, and LOC (local apic timers) is increasing.
> > 
> > What about the statistics for the other interrupts in the system ? It 
> > clearly doesn't list all interrupts in the system .
> 
> what is your point?

Isn't the listing inconsistent ? /proc/interrupts only showing some
special interrupts, and not others .. For example it shows NMI which is
not related to request_irq() .. It shows some clock driver devices
(timer, NMI, LOC) and not others (clock event devices) ..

Daniel

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