[LITMUS^RT] How to stop all the rt-tasks manually

[Sanjib Das]

Dear Concern,

I am wondering if there is any way to kill all the running real-time task
manually.

I am trying to run G-EDF and C-EDF with different tasks and because of
wrong parameter I found "rcu_preempt detected stalls on cpus/tasks", as a
result my rt tasks were still running.

"
[ 2072.588370] Could not switch plugin: -16
[ 2107.177026] Could not switch plugin: -16
[ 2120.735386] Could not switch plugin: -16
[ 2131.718955] Could not switch plugin: -16
[ 2173.427350] INFO: rcu_preempt detected stalls on CPUs/tasks: {}
(detected by 1, t=600017 jiffies, g=53906, c=53905, q=0)
[ 2173.427371] INFO: Stall ended before state dump start
[ 2189.814720] Could not switch plugin: -16
[ 2353.473222] INFO: rcu_preempt detected stalls on CPUs/tasks: {}
(detected by 1, t=780022 jiffies, g=53906, c=53905, q=0)
[ 2353.473241] INFO: Stall ended before state dump start
[ 2533.519115] INFO: rcu_preempt detected stalls on CPUs/tasks: {}
(detected by 1, t=960027 jiffies, g=53906, c=53905, q=0)
[ 2533.519131] INFO: Stall ended before state dump start

"


Though I ran the command using sudo,
"
Error: Cannot write to /proc/litmus/active_plugin. Do you have root
privileges?
Error: Setting new plugin failed.
Are there any active real-time tasks?
sdas at sdas-lab:~/littest/liblitmus$
"

Any suggestions will be very helpful.

Thanks in advance

Sanjib
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