lkml.org 
[lkml]   [2005]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: ARM Linux Suitability for Real-time Application


On Wed, 22 Jun 2005, Russell King wrote:

> If you're just after some background process to run off interrupts with
> minimal interrupt latency, the good news is that you don't have to modify
> the kernel on ARM, and you certainly don't need any RT patches.
>
> If you use the FIQ, then your FIQ latency will be the time it takes the
> CPU to enter your FIQ function. Since the kernel _never_ disables FIQs
> in any way, FIQs have ultimate priority over everything else in the
> system.
>

Aren't FIQ's only on some ARM's ?


Daniel

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-06-22 19:03    [W:0.214 / U:0.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site