lkml.org 
[lkml]   [2007]   [Dec]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 3/3] Enable setting of IRQ-thread priorities from kernel cmdline. (repost:CC to LKML)
hello Juergen,

On 12/20/07, Juergen Beisert <jbe@pengutronix.de> wrote:
> On Thursday 20 December 2007 13:45, Jaswinder Singh wrote:
> > So I am curious, if possible, user can switch softirq-threads or IRQs
> > RT tasks to non-RT tasks for slow hardware or least important hardware
> > for NON-RT tasks. So this will improve RT behaviour.
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Why?
>
> IMHO: Simply decrease the RT priority of less important IRQs or increase all
> other more important IRQs. IRQs are always more important than other
> processes in a system, also in non RT systems.
>

In RT Kernel we have :-
RT Tasks and Non-RT tasks.

So we can also support :-
RT softirq-threads/IRQs and non-RT softirq-threads/IRQs

So RT softirq-threads/IRQs for RT Tasks
and non-RT softirq-threads/IRQs for non-RT Tasks.

OR also remove Non-RT tasks from RT Kernel and simply decrease the RT
priority of less important task as per your suggestions.

Thank you,

Jaswinder Singh.

> Juergen
> --
> Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
> Pengutronix - Linux Solutions for Science and Industry
> Handelsregister: Amtsgericht Hildesheim, HRA 2686
> Vertretung Sued/Muenchen, Germany
> Phone: +49-8766-939 228 | Fax: +49-5121-206917-9
>


\
 
 \ /
  Last update: 2007-12-20 14:45    [W:0.076 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site