Re: [LAU] RTC/HPET timer permissions

From: Jeremy Jongepier <jeremy@email-addr-hidden>
Date: Sun Nov 25 2012 - 22:17:30 EET

On 11/25/2012 01:23 PM, Clemens Ladisch wrote:
> Brent Busby wrote:
>> Is it still necessary or recommended these days for proper operation
>> of audio apps to have a user-accessible /dev/rtc?
>
> Not really. Using the RTC or HPET devices directly is necessary only if
> the kernel does not use them for timers. Nowadays, kernels do, and
> applications use the proper timer APIs.
>

What are those timer API's?

> You'd need this only if you're using some audio application that hasn't
> been updated for many years.
>

So this section has become deprecated?
http://wiki.linuxmusicians.com/doku.php?id=system_configuration#hardware_timers
If so I'll remove it.

And how does the snd-hrtimer module relate to this matter?

Regards,

Jeremy

>> Is there a security risk?
>
> The risk was that handling interrupts at a frequency of 8 kHz would not
> leave enough CPU time for applications. I doubt that you have any CPU
> where this is actually the case.
>
>
> Regards,
> Clemens
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Received on Mon Nov 26 00:15:07 2012

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