linux-kernel - Re: Should irq_chip->mask disable percpu interrupts to all cpus, or just to this cpu?

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Message-ID: <20080924101811.GC26267@elte.hu>
Date:	Wed, 24 Sep 2008 12:18:11 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Should irq_chip->mask disable percpu interrupts to all cpus,
	or just to this cpu?


* Eric W. Biederman <ebiederm@...ssion.com> wrote:

> Other than the beautiful way we print things in /proc/interrupts 
> IRQ_PER_CPU feels like a really bad idea.  Especially in that it 
> enshrines the nasty per cpu irq counters that scale horribly.

ok - i thought the idea was to still have a per cpu irq desc.

so lets fix /proc/interrupts in that model. Only a single entry for 
every class of interrupts or so?

	Ingo
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