linux-kernel - Re: MIPS: return after handling coprocessor 2 exception

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Message-ID: <4C1B4C0A.9070506@niisi.msk.ru>
Date:	Fri, 18 Jun 2010 14:35:54 +0400
From:	"Gleb O. Raiko" <raiko@...si.msk.ru>
To:	Ralf Baechle <ralf@...ux-mips.org>
CC:	David Daney <ddaney@...iumnetworks.com>,
	Jesper Nilsson <jesper@....nu>, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org
Subject: Re: MIPS: return after handling coprocessor 2 exception

On 18.06.2010 14:00, Ralf Baechle wrote:
> static int default_cu2_call(struct notifier_block *nfb, unsigned long action,
>          void *data)
> {
> 	...
>
> 	return NOTIFY_OK | NOTIFY_STOP;
NOTIFY_STOP implies NOTIFY_OK, so
	return NOTIFY_STOP;
shall be enough.
> }

> The notifier list could also be used for example by perf

Or octeon cop2 handler that just sends NOTIFY_BAD for getting the same 
behavior.

Gleb.
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