Re: Different priorities for different softirqs
From: John Kacur <jkacur@redhat.com>
Date: 2012-03-21 15:00:07
On Wed, Mar 21, 2012 at 2:04 PM, Christian Meier [off-list ref] 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 -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html