Re: udelay and ndelay includes and linker

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Hi

I encountered to performance problems caused by a memory leak. My
first idea was there must be
a bottle neck. So I was trying to optimize and searched the web. Some
sites were refiring to ndelay.

Best regards,
Joël


On Mon, Jul 20, 2015 at 8:49 AM, Uwe Kleine-König
<u.kleine-koenig@xxxxxxxxxxxxxx> wrote:
> Hello,
>
> On Fri, Jul 17, 2015 at 11:15:01PM +0200, Joël Krähemann wrote:
>> Hi, since on my system /usr/include/linux/delay.h is missing I'm
>> asking me how to include it and link against it.
>>
>> I'd like to use ndelay() instead of nanosleep().
> ndelay isn't callable from userspace. That's also the reason for not
> being defined in userspace includable header files.
>
> Why do you think there is an advantage when using ndelay over nanosleep?
>
> Best regards
> Uwe
>
> --
> Pengutronix e.K.                           | Uwe Kleine-König            |
> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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