linux-kernel - Re: [PATCH v2] powerpc: don't enable cpu hotplug on mpic-based pseries

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Message-ID: <18189.47620.466515.645055@cargo.ozlabs.ibm.com>
Date:	Thu, 11 Oct 2007 15:52:04 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Olof Johansson <olof@...om.net>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>, Greg KH <greg@...ah.com>,
	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	linuxppc-dev@...abs.org, tgall.foo@...il.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	stable@...nel.org
Subject: Re: [PATCH v2] powerpc: don't enable cpu hotplug on mpic-based pseries

Olof Johansson writes:

> Don't allow cpu hotplug on systems lacking XICS interrupt controller,
> since current code is hardcoded for it.
...
> +	for (np = NULL; (np = of_find_node_by_name(np,
> +						   "interrupt-controller"));) {

Looks like for_each_node_by_name would be nicer here.

If you agree, I'll hand-edit your patch to do that and apply it.  Of
course, ultimately we should implement the necessary mpic bits to
support cpu hotplug.

Paul.
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