Re: Different priorities for different softirqs

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On Wed, Mar 21, 2012 at 2:04 PM, Christian Meier <chmeie@xxxxxxx> wrote:
> Hi,
>
> On https://rt.wiki.kernel.org/articles/r/t/_/RT_PREEMPT_HOWTO_6bc9.html I
> noticed that there are different softirq kthreads for every softirq. So they
> could be prioritized differently.
> In my rt-patched kernels 3.2.11-rt20 and 3.0.24-rt42 I can only see one
> ksoftirqd instance per cpu.
>
> I did not find any hints in kernel/softirq.c where each of those kthreads is
> generated. I only see ksoftirqd.
>
> From RT_PREEMPT_HOWTO_6bc9.html:
> ...
> 2 ?        S      0:00 [softirq-high/0]
> 3 ?        S      0:00 [softirq-timer/0]
> 4 ?        S      0:00 [softirq-net-tx/]
> 5 ?        S      0:00 [softirq-net-rx/]
> 6 ?        S      0:00 [softirq-block/0]
> 7 ?        S      0:00 [softirq-tasklet]
> 8 ?        S      0:00 [softirq-hrtreal]
> 9 ?        S      0:00 [softirq-hrtmono]
> ...
>

You can read the section on Software interrupts here too to learn a
bit about the change.
https://lwn.net/Articles/464180/

Thanks
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