linux-kernel - Re: tick-common.c hack for s390 needed

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Message-ID: <20080319054545.GA18834@infradead.org>
Date:	Wed, 19 Mar 2008 01:45:45 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: tick-common.c hack for s390 needed

On Tue, Mar 18, 2008 at 10:31:19AM +0100, Heiko Carstens wrote:
> Hi Thomas, Ingo,
> 
> I'm converting s390 from s390's NO_IDLE_HZ to GENERIC_CLOCKEVENTS and
> therefore to the generic NO_HZ implementation.
> One of the problems that need a patch for this is kernel/time/tick-common.c
> which relies on the irq stuff present in include/linux/irq.h.
> In particular s390 doesn't have something like irq_set_affinity which
> causes this build error:

Generic code must never use linux/irq.h - it's more like asm-generic
file predating asm-generic.

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