linux-kernel - Re: rtc max frequency setting

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Message-ID: <46BBEC37.5040900@tmr.com>
Date:	Fri, 10 Aug 2007 00:40:23 -0400
From:	Bill Davidsen <davidsen@....com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Jan Engelhardt <jengelh@...putergmbh.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	rtc-linux@...glegroups.com
Subject: Re: rtc max frequency setting

H. Peter Anvin wrote:
> Jan Engelhardt wrote:
>> Hi,
>>
>> with the old rtc.ko module, there was a /proc/sys/dev/rtc/max-user-freq 
>> that could be set. With rtc_cmos.ko (or the new rtc infrastructure in 
>> general), I am missing this file. Where can I set the max-user-freq now, 
>> or is this obsolete now? (mplayer prefers to have user-freq to be >= 1024.)
>>
> 
> Qemu wants something like this too.  Both of these really want something
> else, which is a high-frequency userspace timer.
> 
> What is the best way to do that on modern kernels?
> 
/proc/sys/dev/hpet/max-user-freq? But I notice that some kernels provide 
both values (my 2.6.15, was where I looked), so maybe the rtc went away.

-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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