linux-kernel - Re: [RFC patch 0/5] genirq: add infrastructure for threaded interrupt handlers

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Message-Id: <1222974254.2995.144.camel@laptop-eth>
Date:	Thu, 02 Oct 2008 12:04:14 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Arjan van de Veen <arjan@...radead.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Jon Masters <jonathan@...masters.org>,
	Sven Dietrich <sdietrich@...e.de>
Subject: Re: [RFC patch 0/5] genirq: add infrastructure for threaded
	interrupt handlers

On Thu, 2008-10-02 at 20:42 +0200, Thomas Gleixner wrote:

> Clearly you have neither clue about real time nor about operating
> systems in general. 

Here we go again Thomas.. You think you can have a conversation without
the insults for once?

> Solaris, some BSDs and MacOSX use interrupt threads. Where exactly is
> the relation to realtime?

The very fact that you mention it in your release notes .. You mention
the type of system in "preempt-rt" and the advantage of your system..

> The concept of interrupt threads is nothing which is in any way
> related to real time. It is a well known and pretty old concept in
> operating system design.
> 
> The fact that real time operating systems benefit from interrupt
> threads is a totally different topic.
> 

The fact that a direct relationship exists means that any threaded
interrupt system needs to take into account the inevitable connection to
real time since it will be used in that system as a core component.. If
you can't effectively achieve real time with your system , than that's a
problem that needs to be addressed. 

Daniel

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