Messages in this thread | | | From | Rui Salvaterra <> | Date | Thu, 13 Apr 2023 16:32:32 +0100 | Subject | Re: [BUG?] INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 0-.... } 3 jiffies s: 309 root: 0x1/. |
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Hi, Paul,
On Thu, 13 Apr 2023 at 15:43, Paul E. McKenney <paulmck@kernel.org> wrote: > > My guess would be that you have CONFIG_RCU_EXP_CPU_STALL_TIMEOUT set to > some small non-zero number, for example, you might have set up a recent > Android .config or some such. The default of zero would give you about > 21 seconds rather than the three jiffies that you are seeing. > > Could you please check your .config?
Well, this is embarrassing. I can't fathom why/how, but I had it set to 20, on this machine. That is, 20 millisseconds. I guess its a miracle I haven't seen *more* expedited RCU traces. Sorry for the noise, everyone.
Kind regards, Rui
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