linux-kernel - Re: [PATCH 6/11] Vmi timer no idle hz fixes.patch

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Message-ID: <45C91BDB.9060403@vmware.com>
Date:	Tue, 06 Feb 2007 16:22:51 -0800
From:	Zachary Amsden <zach@...are.com>
To:	Andi Kleen <ak@....de>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH 6/11] Vmi timer no idle hz fixes.patch

Andi Kleen wrote:
>> -#ifdef CONFIG_S390
>> -#ifdef CONFIG_MATHEMU
>> -	{
>> -		.ctl_name	= KERN_IEEE_EMULATION_WARNINGS,
>> -		.procname	= "ieee_emulation_warnings",
>> -		.data		= &sysctl_ieee_emulation_warnings,
>> -		.maxlen		= sizeof(int),
>> -		.mode		= 0644,
>> -		.proc_handler	= &proc_dointvec,
>> -	},
>>     
>
> I think there needs to be a way to have this syctl only
> when it's really implemented for the paravirt ops.
>
> I suppose you should move it to dynamic registration on demand.
>   

Hmm, is there a way to do that and share the sysctl with Xen?  Yes, I 
think if we move the data to paravirt.c and call 
paravirt_start_no_idle_hz (or something_with_fewer_underbars), then we 
can both share this call site instead of silly duplicating the .ctl_name ...

Will code it up.

Zach
-
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