linux-kernel - Re: [BUGFIX] ACPI, APEI, EINJ Param support is disabled by default

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Message-ID: <20110721041610.GL8006@one.firstfloor.org>
Date:	Thu, 21 Jul 2011 06:16:10 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Huang Ying <ying.huang@...el.com>
Cc:	Andi Kleen <andi@...stfloor.org>, Len Brown <lenb@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Luck, Tony" <tony.luck@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Matthew Garrett <mjg@...hat.com>
Subject: Re: [BUGFIX] ACPI, APEI, EINJ Param support is disabled by default

On Thu, Jul 21, 2011 at 10:54:13AM +0800, Huang Ying wrote:
> On 07/21/2011 10:42 AM, Andi Kleen wrote:
> >>  
> >> +static bool param_extension;
> >> +module_param(param_extension, bool, 0);
> > 
> > Make it 0644, then it can be changed at runtime. No need to require a reboot.
> 
> Normally, EINJ is compiled as module, so we can change it at load time
> without a reboot.

Ok. 

> 
> Do we need the real runtime switching capability?

I usually do that with modparams when it's possible. After all it's very
simple and doesn't cost anything.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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