Messages in this thread | | | Date | Thu, 20 Dec 2007 13:25:44 +0100 | From | "Remy Bohmer" <> | Subject | Re: [patch 3/3] Enable setting of IRQ-thread priorities from kernel cmdline. (repost:CC to LKML) |
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Hello Jaswinder,
> Is it possible to run softirq-threads or IRQs as a non-realtime tasks > in RT kernel.
Currently the answer is no. (Unless overruled from userspace) I did not take this requirement into account. So, Is this a serious requirement? Should this be possible? I cannot imagine a purpose in which that is wanted, it would cause unpredictable interrupt handling, and I can imagine that many drivers/devices will not like that.
The purpose is usually to spread the threads across several priorities, to create room for some RT-process to become more important than an IRQ that generates large latencies, and each RT-system designer shall divide the priorities different, due to different system requirements.
Kind Regards,
Remy
2007/12/20, Jaswinder Singh <jaswinderlinuxrt@gmail.com>: > On 12/20/07, Remy Bohmer <linux@bohmer.net> wrote: > > The RT-patch originally creates all its softirq-threads at > > priority 50. > > Is it possible to run softirq-threads or IRQs as a non-realtime tasks > in RT kernel. > > If yes, then how. > > Thank you, > > Jaswinder Singh. >
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