linux-kernel - Re: [patch] Re: how to link to hrtimers in the kernel

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Message-ID: <48EA47DF.2090207@cmu.edu>
Date:	Mon, 06 Oct 2008 13:16:15 -0400
From:	George Nychis <gnychis@....edu>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	"Randy.Dunlap" <rdunlap@...otime.net>, linux-kernel@...r.kernel.org
Subject: Re: [patch] Re: how to link to hrtimers in the kernel



Thomas Gleixner wrote:
> On Mon, 6 Oct 2008, Randy.Dunlap wrote:
>> On Mon, 6 Oct 2008, George Nychis wrote:
>>
>>> Hi all,
>>>
>>> I have modified drivers/usb/core/devio.c to use hrtimer_nanosleep(), and have
>>> included linux/hrtimer.h with it.
> 
> Please do not use hrtimer_nanosleep() in drivers. That's
> wrong.
> 
> What do you want to achieve ?
>  

I am trying to sleep at the microsecond level, which ssleep and msleep 
cannot provide.  I couldn't find any other nanosleep method in the kernel.

I found information by searching the net on using jiffies to accomplish 
sleep periods, but that is not high enough in resolution.

I'd greatly appreciate any feedback.

Thanks!
George
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