Messages in this thread | | | Date | Thu, 20 Dec 2007 19:10:08 +0530 | From | "Jaswinder Singh" <> | Subject | Re: [patch 3/3] Enable setting of IRQ-thread priorities from kernel cmdline. (repost:CC to LKML) |
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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 >
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