Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1563807 > unrolled thread

Re: [patch-rt] softirq: Move ksoftirqd_running() under !CONFIG_PREEMPT_RT_FULL

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: [patch-rt] softirq: Move ksoftirqd_running() under  !CONFIG_PREEMPT_RT_FULL Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2017-01-20 18:30 +0100

#1563807 — Re: [patch-rt] softirq: Move ksoftirqd_running() under !CONFIG_PREEMPT_RT_FULL

On 2016-12-31 09:20:10 [+0100], Mike Galbraith wrote:
> 
> Otherwise, ktimersoftd may not be awakened when it has work to do.

so the problem is that we have two softirq threads and we only check
the state of the "normal" one even if we would have also the schedule
the second one. 
The approach looks good, applied.

> [   84.087571] NOHZ: local_softirq_pending 02
> [   84.087593] NOHZ: local_softirq_pending 02
> [   84.087598] NOHZ: local_softirq_pending 02
> [   84.087904] NOHZ: local_softirq_pending 02
> [   84.088526] NOHZ: local_softirq_pending 02
> [   84.088899] NOHZ: local_softirq_pending 02
> [   84.089463] NOHZ: local_softirq_pending 02
> [  115.013470] NOHZ: local_softirq_pending 02
> [  115.013601] NOHZ: local_softirq_pending 02
> [  115.013709] NOHZ: local_softirq_pending 02
> 
> Signed-off-by: Mike Galbraith <efault@gmx.de>

Sebastian

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web